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Geophysics

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in 132 AD. This instrument was designed to drop a bronze ball from the mouth of a dragon into the mouth of a toad. By looking at which of eight toads had the ball, one could determine the direction of the earthquake. It was 1571 years before the first design for a seismoscope was published in Europe,
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location. Signal processing involves the correction of time-series data for unwanted noise or errors introduced by the measurement platform, such as aircraft vibrations in gravity data. It also involves the reduction of sources of noise, such as diurnal corrections in magnetic data. In seismic data,
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map variations in Earth's gravity field by making measurements of the distance between the two satellites using GPS and a microwave ranging system. Gravity variations detected by GRACE include those caused by changes in ocean currents; runoff and ground water depletion; melting ice sheets and
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methods in order to gather the data. The remote sensing platforms used in exploration geophysics are not perfect and need adjustments done on them in order to accurately account for the effects that the platform itself may have on the collected data. For example, when gathering
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The seismic model of the Earth does not by itself determine the composition of the layers. For a complete model of the Earth, mineral physics is needed to interpret seismic velocities in terms of composition. The mineral properties are temperature-dependent, so the
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as for navigation on land. It was not until good steel needles could be forged that compasses were used for navigation at sea; before that, they could not retain their magnetism long enough to be useful. The first mention of a compass in Europe was in 1190 AD.
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Since geophysics is concerned with the shape of the Earth, and by extension the mapping of features around and in the planet, geophysical measurements include high accuracy GPS measurements. These measurements are processed to increase their accuracy through
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is a branch of applied geophysics that involves the development and utilization of different seismic or electromagnetic methods which the aim of investigating different energy, mineral and water resources. This is done through the uses of various
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The gravitational pull of the Moon and Sun gives rise to two high tides and two low tides every lunar day, or every 24 hours and 50 minutes. Therefore, there is a gap of 12 hours and 25 minutes between every high tide and between every low tide.
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can provide a wealth of information on the structure of the earth up to several kilometers deep and are used to increase our understanding of the geology as well as to explore for oil and gas. Changes in the travel direction, called
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and how they relate to the Earth and its surroundings. Geophysicists also investigate the physical processes and properties of the Earth, its fluid layers, and magnetic field along with the near-Earth environment in the
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such as the first-vertical derivative. Many geophysics companies have designed in-house geophysics programs that pre-date ArcGIS and GeoSoft in order to meet the visualization requirements of a geophysical dataset.
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deployed either on the surface or in helicopter flyovers. Since the 1960s, the Earth's gravity field has been measured by analyzing the motion of satellites. Sea level can also be measured by satellites using
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in the outer core. This indicates that the outer core is liquid, because liquids cannot support shear. The outer core is liquid, and the motion of this highly conductive fluid generates the Earth's field.
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Gravity measurements became part of geodesy because they were needed to related measurements at the surface of the Earth to the reference coordinate system. Gravity measurements on land can be made using
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is one definition of the shape of the Earth. The geoid would be the global mean sea level if the oceans were in equilibrium and could be extended through the continents (such as with very narrow canals).
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data (aircraft gathered magnetic data) using a conventional fixed-wing aircraft- the platform has to be adjusted to account for the electromagnetic currents that it may generate as it passes through
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data are used to analyze potential petroleum reservoirs and mineral deposits, locate groundwater, find archaeological relics, determine the thickness of glaciers and soils, and assess sites for
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from controlled sources provides information on the region that the waves travel through. If the density or composition of the rock changes, waves are reflected. Reflections recorded using
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for a sphere of constant density). However, some of the density increase is compression under the enormous pressures inside the Earth. The effect of pressure can be calculated using the
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is combined with the Earth's mass and moment of inertia to infer models of the Earth's interior – its composition, density, temperature, pressure. For example, the Earth's mean
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and motion of conducting bodies (such as seawater) across the Earth's permanent magnetic field. The distribution of telluric current density can be used to detect variations in
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had gained so much success, that it resulted in changing the main objective of physics in that era to unravel natures fundamental forces, and their characterizations in laws.
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Although geophysics was only recognized as a separate discipline in the 19th century, its origins date back to ancient times. The first magnetic compasses were made from
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Geophysical measurements are generally at a particular time and place. Accurate measurements of position, along with earth deformation and gravity, are the province of
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The mantle acts as a solid for seismic waves, but under high pressures and temperatures, it deforms so that over millions of years it acts like a liquid. This makes
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Reconstruction of seismic reflections in the deep interior indicates some major discontinuities in seismic velocities that demarcate the major zones of the Earth:
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shape- which is a result of the centrifugal forces the planet generates due to its constant motion. These forces cause the planets diameter to bulge towards the
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and has long been used for navigation. It originates in the fluid motions of the outer core. The magnetic field in the upper atmosphere gives rise to the
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can be used to map the concentration and distribution of radioisotopes near the Earth's surface, which is useful for mapping lithology and alteration.
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processing. Once the geophysical measurements have been processed and inverted, the interpreted results are plotted using GIS. Programs such as
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towards the Sun. The solar wind, a stream of charged particles, streams out and around the terrestrial magnetic field, and continues behind the
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or the Earth's core. In the core, they probably have little observable effect on the Earth's magnetic field, but slower waves such as magnetic
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In the highly conductive liquid iron of the outer core, magnetic fields are generated by electric currents through electromagnetic induction.
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and its surrounding space environment, and the use of quantitative methods for their analysis. Geophysicists, who usually study geophysics,
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Pollack, Henry N.; Hurter, Suzanne J.; Johnson, Jeffrey R. (1993). "Heat flow from the Earth's interior: Analysis of the global data set".
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are vibrations that travel through the Earth's interior or along its surface. The entire Earth can also oscillate in forms that are called
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in 1834. However, many geophysical phenomena – such as the Earth's magnetic field and earthquakes – have been investigated since the
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which result in the final interpretation of the geophysical data into a geological interpretation of the geophysical measurements
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of water makes electrical and electromagnetic methods useful for tracking groundwater flow. Physical properties of water such as
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Runcorn, S.K, (editor-in-chief), 1967, International dictionary of geophysics:. Pergamon, Oxford, 2 volumes, 1,728 pp., 730 fig
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and determines the basic circulation patterns of storms. In the ocean, they drive large-scale circulation patterns as well as
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cover several orders of magnitude, so radioactive decay can be used to accurately date both recent events and events in past
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Gravitational forces make rocks press down on deeper rocks, increasing their density as the depth increases. Measurements of
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Satellites in space have made it possible to collect data from not only the visible light region, but in other areas of the
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and rock formation. However, modern geophysics organizations and pure scientists use a broader definition that includes the
6314: 6128: 3127: 3104: 1298:(GPS). A three-dimensional position is calculated using messages from four or more visible satellites and referred to the 629: 582: 3363:. A new translation by I Bernard Cohen and Anne Whitman, preceded by "A Guide to Newton's Principia" by I Bernard Cohen. 5148: 4619: 3223:. In Geophysics Study Committee; Geophysics Research Forum; Commission on Physical Sciences, Mathematics and Resources; 2915: 700:, but at random intervals averaging 440,000 to a million years or so, the polarity of the Earth's field reverses. These 531:
over most of the Earth and back upwards through thunderstorms. The flow is manifested by lightning below the clouds and
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Richards, M. A.; Duncan, R. A.; Courtillot, V. E. (1989). "Flood Basalts and Hot-Spot Tracks: Plume Heads and Tails".
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Water is a very complex substance and its unique properties are essential for life. Its physical properties shape the
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of rocks is affected by temperature and pressure, and in turn, determines the rates at which tectonic plates move.
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Commission on Geophysical Risk and Sustainability (GeoRisk), International Union of Geodesy and Geophysics (IUGG)
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Measuring the changes in acceleration experienced by spacecraft as they orbit has allowed fine details of the
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per meter. Relative to the solid Earth, the ionization of the planet's atmosphere is a result of the galactic
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The physical properties of minerals must be understood to infer the composition of the Earth's interior from
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at the graduate level, complete investigations across a wide range of scientific disciplines. The term
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The magnetic compass existed in China back as far as the fourth century BC. It was used as much for
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Geophysics is a highly interdisciplinary subject, and geophysicists contribute to every area of the
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Contrary to popular belief, the earth is not entirely spherical but instead generally exhibits an
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were built to meet these needs and include many geophysical functions that are built-in, such as
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electromagnetic data, and gravity data, processing continues after error corrections to include
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Geophysics emerged as a separate discipline only in the 19th century, from the intersection of
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at the ocean surface. In the Earth's core, the circulation of the molten iron is structured by
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of underground structures. Geophysicists can also provide the electric current themselves (see
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of the planets to be mapped. For example, in the 1970s, the gravity field disturbances above
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Renne, P.R.; Ludwig, K.R.; Karner, D.B. (2000). "Progress and challenges in geochronology".
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The 17th century had major milestones that marked the beginning of modern science. In 1600,
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Mathematical geophysics: an introduction to rotating fluids and the Navier-Stokes equations
1485:. These equipment are often used in conjunction with different geophysical methods such as 841:, flows like a fluid over long time intervals. This flow is reflected in phenomena such as 692:, but it changes over time (a phenomenon called geomagnetic secular variation). Mostly the 6236: 5894: 5877: 5834: 5824: 5716: 5304: 5274: 4906: 4816: 4762: 4662: 4528: 4330: 4304: 4251: 4009: 3971: 3845: 3694: 3512: 3414: 3030: 1706: 1576: 1328: 1311: 1211: 1196: 1156: 1131:
Reconstructions of seismic waves in the deep interior of the Earth show that there are no
1091: 1053: 1037: 973: 900: 865: 697: 325: 317: 228: 158: 106: 35: 2732: 1720:, an instrument capable of keeping a continuous record of seismic activity, was built by 1207:, and the boundaries between layers of the mantle are consistent with phase transitions. 3545: 3470: 3311: 3170: 2685: 1875: 6164: 6009: 5927: 5917: 5781: 5776: 5535: 5525: 5415: 5371: 5279: 5251: 5246: 5241: 4836: 4791: 4769: 4657: 4575: 4523: 4457: 4419: 4414: 4366: 4246: 4014: 3991: 3981: 3961: 3579: 3387: 3278: 1769: 1482: 1458: 1448: 1361: 1303: 1241: 1049: 918: 881: 830: 741: 713: 709: 664: 613: 542:, a potential that arises in the ground because of human-made or natural disturbances. 256: 122: 2523: 1248:
mapped out the gross dimensions of the Earth's magnetic field, which extends about 10
1074: 6298: 5937: 5867: 5819: 5786: 5658: 5648: 5638: 5598: 5593: 5294: 5256: 4994: 4554: 4335: 4271: 4220: 4029: 3740: 3586: 3407: 3188: 2701: 2670:"Common roots of modern seismology and of earth tide research. A historical overview" 2654: 2393:. Department of Agriculture and Food, Government of Western Australia. Archived from 1828: 1396: 1368: 1223: 1188: 877: 809: 798: 774: 684:
Earth's dipole axis (pink line) is tilted away from the rotational axis (blue line).
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Earthquake Engineering: From Engineering Seismology to Performance-Based Engineering
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Gutenberg, B., 1929, Lehrbuch der Geophysik. Leipzig. Berlin (Gebruder Borntraeger).
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penetrating it, which leaves it with a net positive charge. A current of about 1800
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Age of the sea floor. Much of the dating information comes from magnetic anomalies.
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Müller, R. Dietmar; Sdrolias, Maria; Gaina, Carmen; Roest, Walter R. (April 2008).
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is strong enough, its interaction with the solar wind forms a magnetosphere. Early
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at the Earth's surface and above it can be used to look for mineral deposits (see
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Illustration of the deformations of a block by body waves and surface waves (see
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Unstable isotopes decay at predictable rates, and the decay rates of different
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The Magnetic Field of the Earth: Paleomagnetism, the Core, and the Deep Mantle
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Muller, Paul; Sjogren, William (1968). "Mascons: lunar mass concentrations".
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US Department of Commerce, National Oceanic and Atmospheric Administration.
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Global positioning systems (GPS) and geographical information systems (GIS)
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A variety of electric methods are used in geophysical survey. Some measure
383:. The main sources of heat are: primordial heat due to Earth's cooling and 324:). The surface gravitational field provides information on the dynamics of 280: 6020: 3839:
A reference manual for near-surface geophysics techniques and applications
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Sadava, David; Heller, H. Craig; Hillis, David M.; Berenbaum, May (2009).
1860:"Age, spreading rates, and spreading asymmetry of the world's ocean crust" 3860: 3179: 3152: 1884: 1685:
which was pivotal in the development of modern scientific fields such as
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make flow possible, although over short times the rocks are brittle. The
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is believed to be caused by high-energy electrons that get caught in the
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Merrill, Ronald T.; McElhinny, Michael W.; McFadden, Phillip L. (1998).
1040:. Earth's shape is constantly changing, and different factors including 5854: 5731: 5701: 5517: 5507: 5350: 5335: 5164: 5038: 5033: 4376: 4163: 4075: 2128:"Seismic wave | Earth's Interior Structure & Movement | Britannica" 1838: 1823: 1690: 1629:
Perhaps the earliest contribution to seismology was the invention of a
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A map of deviations in gravity from a perfectly smooth, idealized Earth
264: 118: 3478: 3035:(Technical report). National Geospatial-Intelligence Agency. TR 80-003 777:, powering the geodynamo and plate tectonics. The main heat-producing 5721: 5588: 5568: 4846: 2831:(Winter 2008 ed.), Metaphysics Research Lab, Stanford University 1423: 1299: 837:, ocean, mantle and core. Even the mantle, though it has an enormous 689: 635:
Electromagnetic methods that are used for geophysical survey include
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Telford, William Murray; Geldart, L. P.; Sheriff, Robert E. (1990).
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Waves and other phenomena in the magnetosphere can be modeled using
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Electromagnetic seabed logging : a new tool for geoscientists
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in the planets upper crust. There is also some contributions from
350: 333: 279: 162: 150: 114: 42: 34: 1914:. National Aeronautics and Space Administration. 29 December 2003 5958: 5578: 5314: 4963: 4059: 3629:"Radioactive potassium may be major heat source in Earth's core" 1470: 1336: 868:. In the atmosphere, it gives rise to large-scale patterns like 797:, the primary method for establishing an absolute time scale in 516: 202: 6024: 5411: 5137: 4967: 4615: 4136: 3884: 3691:
An introduction to seismology, earthquakes, and earth structure
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National Research Council (U.S.). Committee on Geodesy (1985).
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and other sources of information. Mineral physicists study the
460:. Ground motions from waves or normal modes are measured using 1989:
Geophysics, 1970, Encyclopaedia Britannica, Vol.10, p. 202-202
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The Earth's magnetic field protects the Earth from the deadly
73: 3880: 2966:. Oxford lecture series in mathematics and its applications. 2899: 3855: 3646:"Cloud Physics: Collision/Coalescence; The Bergeron Process" 3361:
The Principia, Mathematical principles of natural philosophy
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of Cyrene deduced that the Earth was round and measured the
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Absolute positions are most frequently determined using the
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of rocks, or their ability to flow. Deformation of rocks by
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National Research Council (U.S.). Committee on Geodesy 1985
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must also be determined. This requires physical theory for
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Seismic velocities and boundaries in the interior of the
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occur in the ionosphere and magnetosphere as well as in
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flows in the global circuit. It flows downward from the
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classically refers to solid earth applications: Earth's
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Study of the Earth's Deep Interior, a Committee of IUGG
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An Introduction to Applied and Environmental Geophysics
3436:. Cambridge Topics in Mineral Physics & Chemistry. 3196:
Kivelson, Margaret G.; Russell, Christopher T. (1995).
2825:"Newton's Philosophiae Naturalis Principia Mathematica" 2157:(2nd ed.). Cambridge: Cambridge University Press. 395:, although there are two thermal boundary layers – the 3875: 2534: 1140:, however, is solid because of the enormous pressure. 3153:"Ion-aerosol-cloud processes in the lower atmosphere" 3077:
The Solid Earth: An Introduction to Global Geophysics
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applied his theory of mechanics to the tides and the
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to construct geologic time scales. In addition, the
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flow in Earth and the oceans. They have two causes:
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Introduction to the Physics of the Earth's Interior
3219:Lanzerotti, Louis J.; Gregori, Giovanni P. (1986). 2987:
Dynamic Earth: Plates, Plumes and Mantle Convection
1595:'s seismoscope, possibly the first contribution to 732:, a part of plate tectonics. They are the basis of 259:, while some geophysicists conduct research in the 79: 3781:Turcotte, Donald Lawson; Schubert, Gerald (2002). 3665: 3578: 3406: 980:, and groundwater flow includes phenomena such as 3672:Encyclopedic Dictionary of Exploration Geophysics 3277:. International Geophysics Series. Vol. 63. 2348: 2245: 992:have a large effect on its motion in the oceans. 744:can be used to measure the motion of continents. 736:, which correlates magnetic reversals with other 407:. Some heat is carried up from the bottom of the 375:generates the Earth's magnetic field through the 223:Geophysics is applied to societal needs, such as 3100:"GRACE: Gravity Recovery and Climate Experiment" 3014:Bulletin of the Seismological Society of America 2326: 2191: 1815: – Science of planets and planetary systems 856:Geophysical fluid dynamics is a primary tool in 812:. Radiometric mapping using ground and airborne 605:waves may also be generated by earthquakes (see 415:. The heat flow at the Earth's surface is about 2935:Bozorgnia, Yousef; Bertero, Vitelmo V. (2004). 2304: 2205: 1618:with great precision. He developed a system of 1528:Geophysical measurements are often recorded as 1167:layer. Between the crust and the mantle is the 964:involve a complex mixture of processes such as 2633:Schröder, W. (2010). "History of geophysics". 2315: 2180: 1693:. In it, Newton both laid the foundations for 1011:, freshwater ice, snow, and frozen ground (or 6036: 5423: 5149: 4979: 4627: 4148: 3896: 2567: 1931: 1929: 1778:International Union of Geodesy and Geophysics 1289:International Union of Geodesy and Geophysics 511:Although we mainly notice electricity during 201:; and analogous problems associated with the 8: 3382:Opdyke, Neil D.; Channell, James T. (1996). 3128:"Web resources in the history of geophysics" 3010:"The Early History of Seismometry (to 1900)" 2752: 2621: 917:properties of minerals; their high-pressure 2778: 2581: 2579: 2577: 2575: 2414: 2412: 2300: 2298: 2201: 2199: 1705:(the orbit of whole star patterns along an 688:The Earth's field is roughly like a tilted 391:. Heat is mostly carried to the surface by 6108: 6043: 6029: 6021: 5430: 5416: 5408: 5156: 5142: 5134: 4986: 4972: 4964: 4634: 4620: 4612: 4155: 4141: 4133: 3903: 3889: 3881: 2261: 2259: 2257: 2255: 2253: 2037: 2035: 2033: 2031: 2029: 2027: 2025: 2013: 2011: 2009: 2007: 762:Example of a radioactive decay chain (see 109:concerned with the physical processes and 3178: 3126:Hardy, Shaun J.; Goodman, Roy E. (2005). 2849:Institute of Physics (18 February 2024). 2053: 2051: 2049: 1883: 1434:, and the calculation of the measurement 952:. Its thermodynamic properties determine 272:, which includes other planetary bodies. 3689:Stein, Seth; Wysession, Michael (2003). 3674:(3rd ed.). Society of Exploration. 3151:Harrison, R. G.; Carslaw, K. S. (2003). 2774: 2772: 2585: 2440: 2418: 2367:. Commonwealth of Australia. 15 May 2014 2176: 2174: 1232:Schematic of Earth's magnetosphere. The 1159:. The mantle itself is divided into the 1060:can further distort the planet's shape. 371:The Earth is cooling, and the resulting 2958:Chemin, Jean-Yves; Desjardins, Benoit; 2829:The Stanford Encyclopedia of Philosophy 2635:Acta Geodaetica et Geophysica Hungarica 2495:"What is glacial isostatic adjustment?" 2337: 2017: 1935: 1850: 1341:Gravity Recovery and Climate Experiment 51:in a period of normal polarity between 4832:Atomic, molecular, and optical physics 2818: 2816: 2790: 2788: 2786: 2763: 2714: 2519: 2517: 2515: 2266:Merrill, McElhinny & McFadden 1998 2104: 2068: 2057: 1945: 1943: 1809: – Study of dynamics of the Earth 773:accounts for about 80% of the Earth's 712:occurring 41,000 years ago during the 6320:Applied and interdisciplinary physics 2545: 2463: 2461: 2459: 550:by the time-varying, external-origin 16:Physics of the Earth and its vicinity 7: 6277: 5982:Geology of solar terrestrial planets 5390: 5116: 4115: 3876:Society of Exploration Geophysicists 3627:Sanders, Robert (10 December 2003). 3008:Dewey, James; Byerly, Perry (1969). 1998: 1949: 1864:Geochemistry, Geophysics, Geosystems 1163:, transition zone, lower mantle and 793:. Radioactive elements are used for 647:and electromagnetic seabed logging. 4594: 2556: 2451: 2042:Telford, Geldart & Sheriff 1990 1960: 1908:"Earth's Inconstant Magnetic Field" 1203:. The mantle is mainly composed of 3229:The Earth's electrical environment 2116:Pollack, Hurter & Johnson 1993 1331:, contributing to a more accurate 976:. Some precipitated water becomes 645:surface nuclear magnetic resonance 419:, and it is a potential source of 403:– in which heat is transported by 14: 1784:Sociedade Brasileira de Geofísica 1316:very-long-baseline interferometry 1193:preliminary reference Earth model 944:and are an essential part of the 564:electrical resistivity tomography 6276: 6265: 6264: 6005: 6004: 5389: 5378: 5377: 5365: 5115: 5103: 5092: 5091: 4593: 4582: 4581: 4569: 4201: 4114: 4103: 4102: 4090: 3029:Defense Mapping Agency (1984) . 1762: 1748: 1734: 1090:, heat flow at the surface, and 995:The many phases of ice form the 956:and the thermal gradient in the 157:and their surface expression in 63: 5712:Human impact on the environment 4953:Timeline of physics discoveries 3871:Career crate: Seismic processor 2349:Renne, Ludwig & Karner 2000 1571:was in German ("Geophysik") by 722:magnetostratigraphy correlation 706:Geomagnetic Polarity Time Scale 5541:Climate variability and change 3365:University of California Press 1300:1980 Geodetic Reference System 726:natural remanent magnetization 458:free oscillations of the Earth 1: 5977:Evolution of the Solar System 3345:Geodesy: a look to the future 3198:Introduction to Space Physics 3105:University of Texas at Austin 2916:"AGUs Cryosphere Focus Group" 2851:"Precession of the equinoxes" 2827:, in Zalta, Edward N. (ed.), 2602:Jackson School of Geosciences 2246:Lanzerotti & Gregori 1986 2219:"Earth's electric atmosphere" 1654:release a publication titled 1187:and the heat contribution of 718:geomagnetic reversal recorded 630:geomagnetic secular variation 5717:Evolutionary history of life 3606:Life: The Science of Biology 3581:Introduction to Oceanography 3554:10.1126/science.246.4926.103 3320:10.1126/science.161.3842.680 3020:(1): 183–227. Archived from 2985:Davies, Geoffrey F. (2001). 2962:; Grenier, Emmanuel (2006). 2738:. Berlin: Springer. p.  2327:Turcotte & Schubert 2002 2192:Bozorgnia & Bertero 2004 1797: – Famous geophysicists 1646:Beginnings of modern science 833:occur in the magnetosphere, 379:and plate tectonics through 6252:Charles Thomson Rees Wilson 6150:Upper-atmospheric lightning 5310:Precession of the equinoxes 4917:Quantum information science 4226:Geological history of Earth 4050:Precession of the equinoxes 3664:Sheriff, Robert E. (1991). 3432:Poirier, Jean-Paul (2000). 2535:Defense Mapping Agency 1984 2391:Natural Resource Management 2387:"Interpreting radiometrics" 2305:Kivelson & Russell 1995 2217:Nicoll, Keri (April 2016). 2206:Harrison & Carslaw 2003 1352:Satellites and space probes 720:in volcanic rocks, through 482:deep structure of the Earth 480:, can be used to infer the 363:. The thin red columns are 47:Computer simulation of the 6338: 4748:Classical electromagnetism 4199: 3967:Geophysical fluid dynamics 3789:Cambridge University Press 3718:Cambridge University Press 3507:Reynolds, John M. (2011). 3438:Cambridge University Press 3409:Geophysical Fluid Dynamics 3256:Cambridge University Press 3252:Fundamentals of Geophysics 3202:Cambridge University Press 3132:American Geophysical Union 3082:Cambridge University Press 3054:Princeton University Press 2991:Cambridge University Press 2877:American Geophysical Union 2316:Opdyke & Channell 1996 2277:Stéphane, Sainson (2017). 2181:Stein & Wysession 2003 2155:Introduction to seismology 2153:Shearer, Peter M. (2009). 1711:Newton's theory of gravity 1679:published his work titled 1583:Ancient and classical eras 1548: 1521: 1446: 1410: 1343:(GRACE), wherein two twin 1285:Canadian Geophysical Union 1281:American Geophysical Union 1268: 1236:flows from left to right. 1221: 1067: 1024:Size and form of the Earth 925:at high pressure; and the 898: 826:Geophysical fluid dynamics 823: 751: 654: 637:transient electromagnetics 601:may be generated by both. 430: 344: 310:gravitational acceleration 293: 287: 25: 18: 6260: 6000: 5445: 5359: 5087: 5019: 5001: 4563: 4240:Composition and structure 4193:Index of geology articles 4084: 3866:USGS Geomagnetism Program 3405:Pedlosky, Joseph (1987). 3225:National Research Council 3107:Center for Space Research 3050:Eratosthenes' "Geography" 2694:10.1016/j.jog.2009.09.032 2647:10.1556/AGeod.45.2010.2.9 2568:Muller & Sjogren 1968 1703:precession of the equinox 1633:by the prolific inventor 1296:global positioning system 1169:Mohorovičić discontinuity 1126:Adams–Williamson equation 1082:sampled by seismic waves 1064:Structure of the interior 1042:glacial isostatic rebound 548:electromagnetic induction 245:environmental remediation 218:precession of the equinox 199:solar-terrestrial physics 5987:Location in the Universe 5918:Antarctic/Southern Ocean 5617:List of sovereign states 4854:Condensed matter physics 3861:Union Commissions (IUGG) 3844:18 February 2021 at the 3806:Verhoogen, John (1980). 3250:Lowrie, William (2004). 2796:"Review of "De Magnete"" 2734:The Forgotten Revolution 2622:Hardy & Goodman 2005 1539:computational geophysics 1358:electromagnetic spectrum 587:Van Allen radiation belt 233:environmental protection 173:including snow and ice; 26:Not to be confused with 6052:Atmospheric electricity 3977:Near-surface geophysics 3809:Energetics of the Earth 3735:Temple, Robert (2006). 3644:Sirvatka, Paul (2003). 2968:Oxford University Press 2779:Dewey & Byerly 1969 1640:Jean de la Hautefeuille 999:and come in forms like 607:seismo-electromagnetics 314:gravitational potential 6232:Georg Wilhelm Richmann 6211:Electrodynamic tethers 6096:Earth's magnetic field 4938:Nobel Prize in Physics 4800:Relativistic mechanics 4025:Earth's magnetic field 3814:National Academy Press 3359:Newton, Isaac (1999). 3233:National Academy Press 3109:. 2011. Archived from 3032:Geodesy for the Layman 2918:. 2011. Archived from 2823:Smith, George (2008), 2674:Journal of Geodynamics 2081:"What is "Heat Flow"?" 1819:Geological Engineering 1642:. It was never built. 1616:circumference of Earth 1599: 1512:Earth's magnetic field 1481:sensing equipment and 1454:Exploration geophysics 1375:were measured through 1237: 1199:) and supplemented by 1083: 927:rheological properties 767: 742:magnetization in rocks 716:. Geologists observed 685: 657:Earth's magnetic field 556:electrical resistivity 501:earthquake engineering 446: 368: 285: 237:exploration geophysics 177:of the oceans and the 143:electromagnetic fields 55: 49:Earth's magnetic field 40: 6195:Equatorial electrojet 6091:Atmospheric chemistry 5697:Biogeochemical cycles 5622:dependent territories 5290:Earth's gravity field 5285:Earth's energy budget 5029:Environmental science 4943:Philosophy of physics 4489:Environmental geology 4097:Geophysics portal 4020:Earth's energy budget 3458:Reviews of Geophysics 3384:Magnetic Stratigraphy 3158:Reviews of Geophysics 3048:Eratosthenes (2010). 2499:oceanservice.noaa.gov 2473:oceanservice.noaa.gov 2469:"Is the Earth round?" 1801:Outline of geophysics 1795:List of geophysicists 1742:Earth sciences portal 1590: 1551:History of geophysics 1411:Further information: 1231: 1077: 921:, melting points and 858:physical oceanography 761: 752:Further information: 702:geomagnetic reversals 683: 655:Further information: 628:may be one source of 575:Electromagnetic waves 570:Electromagnetic waves 540:spontaneous potential 473:Reflection Seismology 440: 354: 294:Further information: 283: 46: 38: 19:For the journal, see 6315:Subfields of geology 6081:Atmospheric dynamics 5745:Computer cartography 5478:Prebiotic atmosphere 5205:Computer cartography 4902:Mathematical physics 4448:Planetary geophysics 3235:. pp. 232–258. 3180:10.1029/2002RG000114 3024:on 23 November 2011. 2598:"Energy Geosciences" 2365:Geoscience Australia 1885:10.1029/2007GC001743 1789:Earth system science 1189:radioactive elements 1019:Regions of the Earth 960:. The many types of 889:magnetohydrodynamics 847:post-glacial rebound 704:, analyzed within a 560:induced polarization 397:core–mantle boundary 161:, the generation of 21:Geophysics (journal) 6076:Atmospheric physics 6071:Atmospheric science 5888:Geologic time scale 5609:Culture and society 5473:Atmosphere of Earth 5324:Related disciplines 5024:Atmospheric science 4877:Atmospheric physics 4716:Classical mechanics 4644:branches of physics 4550:Petroleum geologist 4514:Forensic geophysics 4484:Engineering geology 4231:Timeline of geology 4183:Glossary of geology 4069:Related disciplines 4035:Geothermal gradient 3737:The Genius of China 3577:Ross, D.A. (1995). 3546:1989Sci...246..103R 3471:1993RvGeo..31..267P 3413:(Second ed.). 3312:1968Sci...161..680M 3171:2003RvGeo..41.1012H 2960:Gallagher, Isabelle 2922:on 16 November 2011 2686:2009JGeo...48..241V 1876:2008GGG.....9.4006M 1695:classical mechanics 1461:platforms such as; 1432:upward continuation 1036:and results in the 911:geothermal gradient 789:, uranium-235, and 734:magnetostratigraphy 714:last glacial period 661:Aeromagnetic survey 618:magnetohydrodynamic 487:Earthquakes pose a 347:Geothermal gradient 332:surface called the 205:and other planets. 111:physical properties 6119:Radio atmospherics 6086:Atmospheric dynamo 5883:Geological history 5757:Geodetic astronomy 5372:Geodesy portal 5222:Geodetic astronomy 5069:Physical geography 4933:History of physics 4576:Geology portal 4504:Geologic modelling 4443:Geophysical survey 4395:Geodetic astronomy 4321:Structural geology 4282:Historical geology 4213:History of geology 4188:History of geology 4178:Outline of geology 3952:Geophysical survey 3758:Torge, W. (2001). 3714:Applied geophysics 3631:. UC Berkeley News 3352:National Academies 3113:on 1 December 2009 2766:, pp. 177–181 2717:, pp. 162–166 2668:Varga, P. (2009). 2430:Sadava et al. 2009 2132:www.britannica.com 2001:, pp. 236–242 1600: 1557:physical geography 1302:. An alternative, 1238: 1201:seismic tomography 1181:thermal conduction 1138:Earth's inner core 1084: 1070:Structure of Earth 923:equations of state 814:gamma spectrometry 795:radiometric dating 768: 764:Radiometric dating 754:Radiometric dating 730:seafloor spreading 686: 579:Earth's outer core 447: 393:thermal convection 369: 357:thermal convection 286: 261:planetary sciences 251:Physical phenomena 241:geophysical survey 147:internal structure 105:) is a subject of 56: 41: 28:Physical geography 6292: 6291: 6173: 6172: 6143:Optical emissions 6112:ELF/VLF emissions 6018: 6017: 5969:Planetary science 5952:Natural satellite 5873:Extremes on Earth 5840:Signal processing 5405: 5404: 5131: 5130: 4961: 4960: 4948:Physics education 4897:Materials science 4864:Interdisciplinary 4822:Quantum mechanics 4609: 4608: 4494:Planetary geology 4410:Planetary geodesy 4130: 4129: 4045:Mantle convection 3823:978-0-309-03076-2 3764:Walter de Gruyter 3727:978-0-521-33938-4 3681:978-1-56080-018-7 3650:College of DuPage 3619:978-1-4292-1962-4 3540:(4926): 103–107. 3522:978-0-471-48535-3 3479:10.1029/93RG01249 3374:978-0-520-08816-0 3306:(3842): 680–684. 3211:978-0-521-45714-9 3063:978-0-691-14267-8 2950:978-0-8493-1439-1 2800:pwg.gsfc.nasa.gov 2753:Eratosthenes 2010 2288:978-3-319-45355-2 2134:. 12 January 2024 1813:Planetary science 1756:Geophysics portal 1610:In circa 240 BC, 1524:Signal processing 1518:Signal processing 1483:seismic receivers 1304:optical astronomy 1108:moment of inertia 1058:natural disasters 771:Radioactive decay 552:geomagnetic field 544:Telluric currents 389:phase transitions 381:mantle convection 225:mineral resources 6327: 6280: 6279: 6268: 6267: 6216:Magnetotellurics 6185:Solar irradiance 6109: 6105:Electromagnetism 6045: 6038: 6031: 6022: 6008: 6007: 5900:History of Earth 5551:Paleoclimatology 5432: 5425: 5418: 5409: 5393: 5392: 5381: 5380: 5370: 5369: 5368: 5300:Gravity of Earth 5232:Gravity of Earth 5158: 5151: 5144: 5135: 5119: 5118: 5107: 5095: 5094: 4988: 4981: 4974: 4965: 4887:Chemical physics 4827:Particle physics 4753:Classical optics 4636: 4629: 4622: 4613: 4597: 4596: 4585: 4584: 4574: 4573: 4509:Forensic geology 4479:Economic geology 4405:Gravity of Earth 4300:Paleoclimatology 4205: 4157: 4150: 4143: 4134: 4118: 4117: 4106: 4105: 4095: 4094: 4040:Gravity of Earth 3905: 3898: 3891: 3882: 3827: 3802: 3787:(2nd ed.). 3777: 3762:(3rd ed.). 3754: 3731: 3708: 3685: 3669: 3660: 3658: 3656: 3640: 3638: 3636: 3623: 3600: 3584: 3573: 3526: 3503: 3488:Science Progress 3482: 3451: 3428: 3412: 3401: 3378: 3355: 3349: 3339: 3292: 3269: 3246: 3215: 3192: 3182: 3147: 3145: 3143: 3138:on 27 April 2013 3134:. 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1990: 1987: 1981: 1978: 1972: 1969: 1963: 1958: 1952: 1947: 1938: 1933: 1924: 1923: 1921: 1919: 1904: 1898: 1897: 1887: 1855: 1772: 1767: 1766: 1758: 1753: 1752: 1744: 1739: 1738: 1737: 1420:differential GPS 1291:encompass both. 1123: 1116: 1105: 1101: 1096:specific gravity 694:geomagnetic pole 641:magnetotellurics 593:are produced by 418: 296:Physical geodesy 290:Gravity of Earth 227:, mitigation of 121:, or one of the 104: 103: 100: 99: 96: 93: 90: 87: 84: 81: 78: 75: 72: 69: 6337: 6336: 6330: 6329: 6328: 6326: 6325: 6324: 6295: 6294: 6293: 6288: 6256: 6237:Egon Schweidler 6220: 6199: 6169: 6160:St. Elmo's fire 6138: 6100: 6054: 6049: 6019: 6014: 5996: 5963: 5947: 5904: 5895:Geologic record 5849: 5835:Plate tectonics 5825:Mineral physics 5805:Earth structure 5791: 5726: 5673: 5603: 5555: 5512: 5459: 5441: 5436: 5406: 5401: 5366: 5364: 5355: 5319: 5305:Plate tectonics 5280:Coriolis effect 5275:Chandler wobble 5267: 5261: 5188: 5167: 5162: 5132: 5127: 5083: 5015: 4997: 4992: 4962: 4957: 4921: 4907:Medical physics 4858: 4817:Nuclear physics 4786: 4780:Non-equilibrium 4702: 4674: 4646: 4640: 4610: 4605: 4568: 4559: 4533: 4529:Mineral physics 4462: 4424: 4371: 4345: 4331:Plate tectonics 4309: 4305:Palaeogeography 4276: 4252:Crystallography 4235: 4207: 4206: 4197: 4166: 4161: 4131: 4126: 4089: 4080: 4064: 4015:Coriolis effect 4010:Chandler wobble 4002: 3996: 3972:Mineral physics 3935: 3914: 3909: 3846:Wayback Machine 3835: 3830: 3824: 3805: 3799: 3780: 3774: 3757: 3751: 3734: 3728: 3711: 3705: 3695:Wiley-Blackwell 3688: 3682: 3663: 3654: 3652: 3643: 3634: 3632: 3626: 3620: 3603: 3597: 3576: 3529: 3523: 3513:Wiley-Blackwell 3506: 3485: 3454: 3448: 3431: 3425: 3415:Springer-Verlag 3404: 3398: 3381: 3375: 3358: 3347: 3342: 3295: 3289: 3272: 3266: 3249: 3243: 3218: 3212: 3195: 3150: 3141: 3139: 3125: 3116: 3114: 3098: 3092: 3070: 3064: 3047: 3038: 3036: 3028: 3007: 3001: 2984: 2978: 2957: 2951: 2934: 2925: 2923: 2914: 2905: 2903: 2898: 2889: 2887: 2875: 2871: 2866: 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1730: 1652:William Gilbert 1648: 1585: 1553: 1547: 1526: 1520: 1495:electromagnetic 1451: 1445: 1415: 1409: 1362:magnetic fields 1354: 1329:radar altimetry 1312:Chandler wobble 1273: 1267: 1262: 1226: 1220: 1212:plate tectonics 1197:post-perovskite 1122: 1118: 1115: 1111: 1103: 1099: 1092:mineral physics 1072: 1066: 1038:ellipsoid shape 1026: 1021: 974:supersaturation 903: 901:Mineral physics 897: 895:Mineral physics 866:Coriolis effect 828: 822: 756: 750: 698:geographic pole 696:stays near the 667: 653: 603:Electromagnetic 572: 509: 435: 429: 416: 349: 343: 326:tectonic plates 318:gravity anomaly 302: 292: 278: 253: 229:natural hazards 159:plate tectonics 139:magnetic fields 107:natural science 66: 62: 31: 24: 17: 12: 11: 5: 6335: 6334: 6331: 6323: 6322: 6317: 6312: 6310:Earth sciences 6307: 6297: 6296: 6290: 6289: 6287: 6286: 6274: 6261: 6258: 6257: 6255: 6254: 6249: 6247:George Simpson 6244: 6239: 6234: 6228: 6226: 6222: 6221: 6219: 6218: 6213: 6207: 6205: 6201: 6200: 6198: 6197: 6192: 6187: 6181: 6179: 6175: 6174: 6171: 6170: 6168: 6167: 6165:Ball lightning 6162: 6157: 6152: 6146: 6144: 6140: 6139: 6137: 6136: 6131: 6126: 6121: 6115: 6113: 6106: 6102: 6101: 6099: 6098: 6093: 6088: 6083: 6078: 6073: 6068: 6062: 6060: 6056: 6055: 6050: 6048: 6047: 6040: 6033: 6025: 6016: 6015: 6013: 6012: 6001: 5998: 5997: 5995: 5994: 5989: 5984: 5979: 5973: 5971: 5965: 5964: 5962: 5961: 5955: 5953: 5949: 5948: 5946: 5945: 5940: 5935: 5930: 5928:Atlantic Ocean 5925: 5920: 5914: 5912: 5906: 5905: 5903: 5902: 5897: 5892: 5891: 5890: 5880: 5875: 5870: 5865: 5859: 5857: 5851: 5850: 5848: 5847: 5842: 5837: 5832: 5827: 5822: 5817: 5812: 5810:Fluid dynamics 5807: 5801: 5799: 5793: 5792: 5790: 5789: 5784: 5782:Geopositioning 5779: 5777:Remote Sensing 5774: 5769: 5764: 5759: 5754: 5749: 5748: 5747: 5736: 5734: 5728: 5727: 5725: 5724: 5719: 5714: 5709: 5704: 5699: 5694: 5689: 5683: 5681: 5675: 5674: 5672: 5671: 5666: 5661: 5656: 5651: 5646: 5641: 5636: 5631: 5626: 5625: 5624: 5613: 5611: 5605: 5604: 5602: 5601: 5596: 5591: 5586: 5581: 5576: 5571: 5565: 5563: 5557: 5556: 5554: 5553: 5548: 5543: 5538: 5536:Climate change 5533: 5531:Energy balance 5528: 5526:Climate system 5522: 5520: 5514: 5513: 5511: 5510: 5505: 5500: 5495: 5490: 5485: 5480: 5475: 5469: 5467: 5461: 5460: 5458: 5457: 5452: 5446: 5443: 5442: 5437: 5435: 5434: 5427: 5420: 5412: 5403: 5402: 5400: 5399: 5387: 5375: 5360: 5357: 5356: 5354: 5353: 5348: 5343: 5338: 5333: 5327: 5325: 5321: 5320: 5318: 5317: 5312: 5307: 5302: 5297: 5292: 5287: 5282: 5277: 5271: 5269: 5263: 5262: 5260: 5259: 5254: 5252:Geopositioning 5249: 5247:Remote Sensing 5244: 5242:Photogrammetry 5239: 5234: 5229: 5224: 5219: 5214: 5213: 5212: 5207: 5196: 5194: 5190: 5189: 5187: 5186: 5181: 5175: 5173: 5169: 5168: 5163: 5161: 5160: 5153: 5146: 5138: 5129: 5128: 5126: 5125: 5113: 5101: 5088: 5085: 5084: 5082: 5081: 5076: 5071: 5066: 5061: 5056: 5051: 5046: 5041: 5036: 5031: 5026: 5020: 5017: 5016: 5014: 5013: 5008: 5002: 4999: 4998: 4993: 4991: 4990: 4983: 4976: 4968: 4959: 4958: 4956: 4955: 4950: 4945: 4940: 4935: 4929: 4927: 4923: 4922: 4920: 4919: 4914: 4909: 4904: 4899: 4894: 4889: 4884: 4879: 4874: 4868: 4866: 4860: 4859: 4857: 4856: 4851: 4850: 4849: 4844: 4839: 4829: 4824: 4819: 4814: 4813: 4812: 4807: 4796: 4794: 4788: 4787: 4785: 4784: 4783: 4782: 4777: 4770:Thermodynamics 4767: 4766: 4765: 4760: 4750: 4745: 4740: 4739: 4738: 4733: 4728: 4723: 4712: 4710: 4704: 4703: 4701: 4700: 4699: 4698: 4688: 4682: 4680: 4676: 4675: 4673: 4672: 4671: 4670: 4660: 4654: 4652: 4648: 4647: 4641: 4639: 4638: 4631: 4624: 4616: 4607: 4606: 4604: 4603: 4591: 4579: 4564: 4561: 4560: 4558: 4557: 4552: 4547: 4541: 4539: 4535: 4534: 4532: 4531: 4526: 4524:Mining geology 4521: 4516: 4511: 4506: 4501: 4496: 4491: 4486: 4481: 4476: 4470: 4468: 4464: 4463: 4461: 4460: 4458:Tectonophysics 4455: 4450: 4445: 4440: 4434: 4432: 4426: 4425: 4423: 4422: 4420:Geopositioning 4417: 4415:Remote sensing 4412: 4407: 4402: 4397: 4392: 4387: 4381: 4379: 4373: 4372: 4370: 4369: 4367:Marine geology 4364: 4359: 4353: 4351: 4347: 4346: 4344: 4343: 4338: 4333: 4328: 4323: 4317: 4315: 4311: 4310: 4308: 4307: 4302: 4297: 4292: 4286: 4284: 4278: 4277: 4275: 4274: 4269: 4264: 4259: 4254: 4249: 4247:Cosmochemistry 4243: 4241: 4237: 4236: 4234: 4233: 4228: 4223: 4217: 4215: 4209: 4208: 4200: 4198: 4196: 4195: 4190: 4185: 4180: 4174: 4172: 4168: 4167: 4162: 4160: 4159: 4152: 4145: 4137: 4128: 4127: 4125: 4124: 4112: 4100: 4085: 4082: 4081: 4079: 4078: 4072: 4070: 4066: 4065: 4063: 4062: 4057: 4052: 4047: 4042: 4037: 4032: 4027: 4022: 4017: 4012: 4006: 4004: 3998: 3997: 3995: 3994: 3992:Tectonophysics 3989: 3984: 3982:Paleomagnetism 3979: 3974: 3969: 3964: 3962:Geomathematics 3959: 3954: 3949: 3943: 3941: 3937: 3936: 3934: 3933: 3928: 3922: 3920: 3916: 3915: 3910: 3908: 3907: 3900: 3893: 3885: 3879: 3878: 3873: 3868: 3863: 3858: 3853: 3848: 3834: 3833:External links 3831: 3829: 3828: 3822: 3803: 3797: 3778: 3772: 3755: 3749: 3732: 3726: 3709: 3703: 3686: 3680: 3661: 3641: 3624: 3618: 3601: 3595: 3574: 3527: 3521: 3504: 3483: 3465:(3): 267–280. 3452: 3446: 3429: 3423: 3402: 3396: 3388:Academic Press 3379: 3373: 3356: 3340: 3293: 3288:978-0124912458 3287: 3279:Academic Press 3270: 3264: 3247: 3241: 3216: 3210: 3193: 3148: 3123: 3096: 3090: 3080:(2 ed.). 3072:Fowler, C.M.R. 3068: 3062: 3045: 3026: 3005: 2999: 2982: 2976: 2955: 2949: 2932: 2912: 2896: 2872: 2870: 2867: 2864: 2863: 2841: 2812: 2782: 2768: 2756: 2745: 2719: 2707: 2660: 2641:(2): 253–261. 2625: 2614: 2589: 2571: 2560: 2549: 2538: 2527: 2511: 2485: 2455: 2444: 2433: 2422: 2408: 2378: 2361:"Radiometrics" 2352: 2341: 2330: 2319: 2308: 2294: 2287: 2269: 2249: 2238: 2209: 2195: 2184: 2170: 2163: 2145: 2119: 2108: 2097: 2072: 2061: 2045: 2021: 2003: 1991: 1982: 1973: 1964: 1953: 1939: 1925: 1899: 1849: 1848: 1846: 1843: 1842: 1841: 1836: 1831: 1826: 1821: 1816: 1810: 1804: 1798: 1792: 1786: 1781: 1774: 1773: 1770:Physics portal 1759: 1745: 1729: 1726: 1647: 1644: 1584: 1581: 1549:Main article: 1546: 1543: 1522:Main article: 1519: 1516: 1459:remote sensing 1449:Remote sensing 1447:Main article: 1444: 1443:Remote sensing 1441: 1408: 1405: 1383:, beneath the 1377:lunar orbiters 1369:gravity fields 1353: 1350: 1269:Main article: 1266: 1263: 1261: 1258: 1242:magnetic field 1240:If a planet's 1222:Main article: 1219: 1216: 1120: 1117:, compared to 1113: 1086:Evidence from 1068:Main article: 1065: 1062: 1056:dynamics, and 1054:tectonic plate 1050:ocean trenches 1025: 1022: 1020: 1017: 919:phase diagrams 899:Main article: 896: 893: 882:Taylor columns 824:Main article: 821: 820:Fluid dynamics 818: 749: 746: 738:stratigraphies 710:Laschamp event 665:Paleomagnetism 652: 649: 571: 568: 508: 505: 489:risk to humans 431:Main article: 428: 425: 361:Earth's mantle 345:Main article: 342: 339: 288:Main article: 277: 274: 257:Earth sciences 252: 249: 175:fluid dynamics 123:Earth sciences 15: 13: 10: 9: 6: 4: 3: 2: 6333: 6332: 6321: 6318: 6316: 6313: 6311: 6308: 6306: 6303: 6302: 6300: 6285: 6284: 6275: 6273: 6272: 6263: 6262: 6259: 6253: 6250: 6248: 6245: 6243: 6240: 6238: 6235: 6233: 6230: 6229: 6227: 6223: 6217: 6214: 6212: 6209: 6208: 6206: 6202: 6196: 6193: 6191: 6188: 6186: 6183: 6182: 6180: 6176: 6166: 6163: 6161: 6158: 6156: 6153: 6151: 6148: 6147: 6145: 6141: 6135: 6132: 6130: 6127: 6125: 6122: 6120: 6117: 6116: 6114: 6110: 6107: 6103: 6097: 6094: 6092: 6089: 6087: 6084: 6082: 6079: 6077: 6074: 6072: 6069: 6067: 6064: 6063: 6061: 6057: 6053: 6046: 6041: 6039: 6034: 6032: 6027: 6026: 6023: 6011: 6003: 6002: 5999: 5993: 5990: 5988: 5985: 5983: 5980: 5978: 5975: 5974: 5972: 5970: 5966: 5960: 5957: 5956: 5954: 5950: 5944: 5941: 5939: 5938:Pacific Ocean 5936: 5934: 5931: 5929: 5926: 5924: 5921: 5919: 5916: 5915: 5913: 5911: 5907: 5901: 5898: 5896: 5893: 5889: 5886: 5885: 5884: 5881: 5879: 5876: 5874: 5871: 5869: 5868:Earth science 5866: 5864: 5861: 5860: 5858: 5856: 5852: 5846: 5843: 5841: 5838: 5836: 5833: 5831: 5828: 5826: 5823: 5821: 5820:Magnetosphere 5818: 5816: 5813: 5811: 5808: 5806: 5803: 5802: 5800: 5798: 5794: 5788: 5787:Virtual globe 5785: 5783: 5780: 5778: 5775: 5773: 5770: 5768: 5765: 5763: 5760: 5758: 5755: 5753: 5752:Earth's orbit 5750: 5746: 5743: 5742: 5741: 5738: 5737: 5735: 5733: 5729: 5723: 5720: 5718: 5715: 5713: 5710: 5708: 5705: 5703: 5700: 5698: 5695: 5693: 5690: 5688: 5685: 5684: 5682: 5680: 5676: 5670: 5667: 5665: 5662: 5660: 5659:World history 5657: 5655: 5652: 5650: 5649:World economy 5647: 5645: 5642: 5640: 5637: 5635: 5632: 5630: 5627: 5623: 5620: 5619: 5618: 5615: 5614: 5612: 5610: 5606: 5600: 5599:South America 5597: 5595: 5594:North America 5592: 5590: 5587: 5585: 5582: 5580: 5577: 5575: 5572: 5570: 5567: 5566: 5564: 5562: 5558: 5552: 5549: 5547: 5544: 5542: 5539: 5537: 5534: 5532: 5529: 5527: 5524: 5523: 5521: 5519: 5515: 5509: 5506: 5504: 5501: 5499: 5496: 5494: 5491: 5489: 5486: 5484: 5481: 5479: 5476: 5474: 5471: 5470: 5468: 5466: 5462: 5456: 5453: 5451: 5448: 5447: 5444: 5440: 5433: 5428: 5426: 5421: 5419: 5414: 5413: 5410: 5398: 5397: 5388: 5386: 5385: 5376: 5374: 5373: 5362: 5361: 5358: 5352: 5349: 5347: 5344: 5342: 5339: 5337: 5334: 5332: 5329: 5328: 5326: 5322: 5316: 5313: 5311: 5308: 5306: 5303: 5301: 5298: 5296: 5293: 5291: 5288: 5286: 5283: 5281: 5278: 5276: 5273: 5272: 5270: 5264: 5258: 5257:Virtual globe 5255: 5253: 5250: 5248: 5245: 5243: 5240: 5238: 5235: 5233: 5230: 5228: 5225: 5223: 5220: 5218: 5217:Earth's orbit 5215: 5211: 5208: 5206: 5203: 5202: 5201: 5198: 5197: 5195: 5191: 5185: 5182: 5180: 5177: 5176: 5174: 5170: 5166: 5159: 5154: 5152: 5147: 5145: 5140: 5139: 5136: 5124: 5123: 5114: 5112: 5111: 5106: 5102: 5100: 5099: 5090: 5089: 5086: 5080: 5077: 5075: 5072: 5070: 5067: 5065: 5062: 5060: 5057: 5055: 5052: 5050: 5047: 5045: 5042: 5040: 5037: 5035: 5032: 5030: 5027: 5025: 5022: 5021: 5018: 5012: 5009: 5007: 5004: 5003: 5000: 4996: 4995:Earth science 4989: 4984: 4982: 4977: 4975: 4970: 4969: 4966: 4954: 4951: 4949: 4946: 4944: 4941: 4939: 4936: 4934: 4931: 4930: 4928: 4924: 4918: 4915: 4913: 4912:Ocean physics 4910: 4908: 4905: 4903: 4900: 4898: 4895: 4893: 4890: 4888: 4885: 4883: 4880: 4878: 4875: 4873: 4870: 4869: 4867: 4865: 4861: 4855: 4852: 4848: 4847:Modern optics 4845: 4843: 4840: 4838: 4835: 4834: 4833: 4830: 4828: 4825: 4823: 4820: 4818: 4815: 4811: 4808: 4806: 4803: 4802: 4801: 4798: 4797: 4795: 4793: 4789: 4781: 4778: 4776: 4773: 4772: 4771: 4768: 4764: 4761: 4759: 4756: 4755: 4754: 4751: 4749: 4746: 4744: 4741: 4737: 4734: 4732: 4729: 4727: 4724: 4722: 4719: 4718: 4717: 4714: 4713: 4711: 4709: 4705: 4697: 4696:Computational 4694: 4693: 4692: 4689: 4687: 4684: 4683: 4681: 4677: 4669: 4666: 4665: 4664: 4661: 4659: 4656: 4655: 4653: 4649: 4645: 4637: 4632: 4630: 4625: 4623: 4618: 4617: 4614: 4602: 4601: 4592: 4590: 4589: 4580: 4578: 4577: 4572: 4566: 4565: 4562: 4556: 4555:Volcanologist 4553: 4551: 4548: 4546: 4543: 4542: 4540: 4536: 4530: 4527: 4525: 4522: 4520: 4517: 4515: 4512: 4510: 4507: 4505: 4502: 4500: 4497: 4495: 4492: 4490: 4487: 4485: 4482: 4480: 4477: 4475: 4472: 4471: 4469: 4465: 4459: 4456: 4454: 4451: 4449: 4446: 4444: 4441: 4439: 4436: 4435: 4433: 4431: 4427: 4421: 4418: 4416: 4413: 4411: 4408: 4406: 4403: 4401: 4398: 4396: 4393: 4391: 4390:Earth's orbit 4388: 4386: 4383: 4382: 4380: 4378: 4374: 4368: 4365: 4363: 4360: 4358: 4355: 4354: 4352: 4348: 4342: 4339: 4337: 4336:Geomorphology 4334: 4332: 4329: 4327: 4324: 4322: 4319: 4318: 4316: 4314:Dynamic Earth 4312: 4306: 4303: 4301: 4298: 4296: 4293: 4291: 4288: 4287: 4285: 4283: 4279: 4273: 4272:Sedimentology 4270: 4268: 4265: 4263: 4260: 4258: 4255: 4253: 4250: 4248: 4245: 4244: 4242: 4238: 4232: 4229: 4227: 4224: 4222: 4221:Geochronology 4219: 4218: 4216: 4214: 4210: 4204: 4194: 4191: 4189: 4186: 4184: 4181: 4179: 4176: 4175: 4173: 4169: 4165: 4158: 4153: 4151: 4146: 4144: 4139: 4138: 4135: 4123: 4122: 4113: 4111: 4110: 4101: 4099: 4098: 4093: 4087: 4086: 4083: 4077: 4074: 4073: 4071: 4067: 4061: 4058: 4056: 4053: 4051: 4048: 4046: 4043: 4041: 4038: 4036: 4033: 4031: 4028: 4026: 4023: 4021: 4018: 4016: 4013: 4011: 4008: 4007: 4005: 3999: 3993: 3990: 3988: 3985: 3983: 3980: 3978: 3975: 3973: 3970: 3968: 3965: 3963: 3960: 3958: 3955: 3953: 3950: 3948: 3945: 3944: 3942: 3938: 3932: 3931:Geophysicists 3929: 3927: 3924: 3923: 3921: 3917: 3913: 3906: 3901: 3899: 3894: 3892: 3887: 3886: 3883: 3877: 3874: 3872: 3869: 3867: 3864: 3862: 3859: 3857: 3854: 3852: 3849: 3847: 3843: 3840: 3837: 3836: 3832: 3825: 3819: 3815: 3811: 3810: 3804: 3800: 3798:0-521-66624-4 3794: 3790: 3786: 3785: 3779: 3775: 3773:0-89925-680-5 3769: 3765: 3761: 3756: 3752: 3750:0-671-62028-2 3746: 3742: 3741:Andre Deutsch 3738: 3733: 3729: 3723: 3719: 3715: 3710: 3706: 3704:0-86542-078-5 3700: 3696: 3692: 3687: 3683: 3677: 3673: 3668: 3662: 3651: 3647: 3642: 3630: 3625: 3621: 3615: 3611: 3607: 3602: 3598: 3596:0-13-491408-2 3592: 3588: 3587:HarperCollins 3583: 3582: 3575: 3571: 3567: 3563: 3559: 3555: 3551: 3547: 3543: 3539: 3535: 3534: 3528: 3524: 3518: 3514: 3510: 3505: 3501: 3497: 3493: 3489: 3484: 3480: 3476: 3472: 3468: 3464: 3460: 3459: 3453: 3449: 3447:0-521-66313-X 3443: 3439: 3435: 3430: 3426: 3424:0-387-96387-1 3420: 3416: 3411: 3410: 3403: 3399: 3397:0-12-527470-X 3393: 3389: 3385: 3380: 3376: 3370: 3366: 3362: 3357: 3353: 3346: 3341: 3337: 3333: 3329: 3325: 3321: 3317: 3313: 3309: 3305: 3301: 3300: 3294: 3290: 3284: 3280: 3276: 3271: 3267: 3265:0-521-46164-2 3261: 3257: 3253: 3248: 3244: 3242:0-309-03680-1 3238: 3234: 3230: 3226: 3222: 3217: 3213: 3207: 3203: 3199: 3194: 3190: 3186: 3181: 3176: 3172: 3168: 3164: 3160: 3159: 3154: 3149: 3137: 3133: 3129: 3124: 3112: 3108: 3106: 3101: 3097: 3093: 3091:0-521-89307-0 3087: 3083: 3079: 3078: 3073: 3069: 3065: 3059: 3055: 3051: 3046: 3034: 3033: 3027: 3023: 3019: 3015: 3011: 3006: 3002: 3000:0-521-59067-1 2996: 2992: 2988: 2983: 2979: 2977:0-19-857133-X 2973: 2969: 2965: 2961: 2956: 2952: 2946: 2942: 2938: 2933: 2921: 2917: 2913: 2901: 2897: 2886: 2882: 2881:"Our Science" 2878: 2874: 2873: 2868: 2852: 2845: 2842: 2830: 2826: 2819: 2817: 2813: 2801: 2797: 2791: 2789: 2787: 2783: 2780: 2775: 2773: 2769: 2765: 2760: 2757: 2754: 2749: 2746: 2741: 2736: 2735: 2729: 2723: 2720: 2716: 2711: 2708: 2703: 2699: 2695: 2691: 2687: 2683: 2679: 2675: 2671: 2664: 2661: 2656: 2652: 2648: 2644: 2640: 2636: 2629: 2626: 2623: 2618: 2615: 2603: 2599: 2593: 2590: 2587: 2586:Reynolds 2011 2582: 2580: 2578: 2576: 2572: 2569: 2564: 2561: 2558: 2553: 2550: 2547: 2542: 2539: 2536: 2531: 2528: 2525: 2520: 2518: 2516: 2512: 2500: 2496: 2489: 2486: 2474: 2470: 2464: 2462: 2460: 2456: 2453: 2448: 2445: 2442: 2441:Sirvatka 2003 2437: 2434: 2431: 2426: 2423: 2420: 2419:Pedlosky 1987 2415: 2413: 2409: 2396: 2392: 2388: 2382: 2379: 2366: 2362: 2356: 2353: 2350: 2345: 2342: 2339: 2334: 2331: 2328: 2323: 2320: 2317: 2312: 2309: 2306: 2301: 2299: 2295: 2290: 2284: 2280: 2273: 2270: 2267: 2262: 2260: 2258: 2256: 2254: 2250: 2247: 2242: 2239: 2227: 2220: 2213: 2210: 2207: 2202: 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1613: 1608: 1605: 1598: 1594: 1589: 1582: 1580: 1578: 1574: 1573:Julius Fröbel 1570: 1566: 1562: 1558: 1552: 1544: 1542: 1540: 1535: 1531: 1525: 1517: 1515: 1513: 1509: 1504: 1500: 1496: 1492: 1488: 1484: 1480: 1476: 1472: 1468: 1464: 1460: 1455: 1450: 1442: 1440: 1437: 1433: 1429: 1425: 1421: 1414: 1406: 1404: 1402: 1398: 1394: 1390: 1386: 1382: 1378: 1374: 1370: 1365: 1363: 1359: 1351: 1349: 1346: 1342: 1339:launched the 1338: 1334: 1330: 1325: 1319: 1317: 1313: 1309: 1305: 1301: 1297: 1292: 1290: 1286: 1282: 1278: 1272: 1264: 1259: 1257: 1255: 1254:magnetic tail 1251: 1247: 1243: 1235: 1230: 1225: 1224:Magnetosphere 1218:Magnetosphere 1217: 1215: 1213: 1208: 1206: 1202: 1198: 1194: 1190: 1186: 1182: 1178: 1172: 1170: 1166: 1162: 1158: 1154: 1150: 1146: 1141: 1139: 1134: 1129: 1127: 1109: 1097: 1093: 1089: 1081: 1076: 1071: 1063: 1061: 1059: 1055: 1051: 1047: 1043: 1039: 1035: 1031: 1023: 1018: 1016: 1014: 1010: 1006: 1002: 998: 993: 991: 987: 983: 979: 975: 971: 967: 963: 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Index

Geophysics (journal)
Physical geography
false color image

Earth's magnetic field
reversals
/ˌˈfɪzɪks/
natural science
physical properties
Earth
physics
Earth sciences
shape
gravitational
magnetic fields
electromagnetic fields
internal structure
composition
dynamics
plate tectonics
magmas
volcanism
water cycle
fluid dynamics
atmosphere
electricity
magnetism
ionosphere
magnetosphere
solar-terrestrial physics

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