Knowledge (XXG)

Glacial lake

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has created a shift from frozen to liquid water, increasing the extent and volume of glacial lakes around the world. Most glacial lakes present today can be found in Asia, Europe, and North America. The area which will see the greatest increase in lake formation is the Southern Tibetan Plateau region
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Glacial lakes that have been formed for a long period of time have a more diverse ecosystem of fauna originating form neighboring tributaries or other glacial refugia. For example, many native species of the great lakes basin entered via the Mississippi basin refugia within the past 14,000 years.
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Biodiversity and productivity tend to be lower in glacial lakes as only cold-tolerant and cold-adapted species can withstand their harsh conditions. Glacial rock flour and low nutrient levels create an oligotrophic environment where few species of plankton, fish and benthic organisms reside.
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Glacial lakes' aesthetic nature can also stimulate economic activity through the attraction of the tourism industry. Thousands of tourists visit the Jökulsárlón glacial lagoon in Iceland annually to take part in commercial boat tours and every two to four years thousands visit the
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glacial lagoon located on the edge of the Atlantic Ocean, tides bring in an array of fish species to the edge of the glacier. These fish attract an abundance of predators from birds to marine mammals, that are searching for food. These predators include fauna such as, seals,
200:, the layers of the sediments at the bottom of the lakes contain evidence of the rate of erosion. The elemental make up of the sediments are not associated with the lakes themselves, but by the migration of the elements within the soil, such as iron and manganese. 346: 163:
The formation and characteristics of glacial lakes vary between location and can be classified into glacial erosion lake, ice-blocked lake, moraine-dammed lake, other glacial lake, supraglacial lake, and subglacial lake.
1118: 240:, soil development was enhanced, whereas early human activities such as deforestation have resulted in elevated soil erosion. These events can be reflected in geochemistry and isotope signatures in the lake sediments. 210:
Sediment deposition can also be influenced by animal activity; including the distribution of biochemical elements, which are elements that are found in organic organisms, such as phosphorus and sulfur.
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Zhang, Xu (Yvon); Bajard, Manon; Bouchez, Julien; Sabatier, Pierre; Poulenard, Jérôme; Arnaud, Fabien; Crouzet, Christian; Kuessner, Marie; Dellinger, Mathieu; Gaillardet, Jérôme (2023-12-15).
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The scouring action of the glaciers pulverizes minerals in the rock over which the glacier passes. These pulverized minerals become sediment at the bottom of the lake, and some of the
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Netto, Renata G.; Benner, Jacob S.; Buatois, Luis A.; Uchman, Alfred; Mángano, M. Gabriela; Ridge, John C.; Kazakauskas, Vaidotas; Gaigalas, Algirdas (2012). "Glacial Environments".
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The amount of sediment found in glacial lakes varies, and has a general stratigraphic sequence of organic muds, glacial clays, silty clays, and sands based on time of formation.
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Glacial lake sediments also archive changes in geochemistry and pollen records as a result of climate change and human activities. During the transition from the
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found in the sediments accompanies a change in erosional activity. The rate of deposition reflects the amount of halogen and boron in the deposited sediments.
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Glacial lakes act as fresh water storage for the replenishing of a region's water supply and serve as potential electricity producers from hydropower.
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Before becoming a lake the first stages of glacial recession melt enough freshwater to form a shallow lagoon. In the case of Iceland's
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becomes suspended in the water column. These suspended minerals support a large population of algae, making the water appear green.
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Bailey, Reeve M.; Smith, Gerald R. (1981-12-01). "Origin and Geography of the Fish Fauna of the Laurentian Great Lakes Basin".
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Mackereth F. J. H.; Cooper Leslie Hugh Norman (1966-03-17). "Some chemical observations on post-glacial lake sediments".
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activity. They are formed when a glacier erodes the land and then melts, filling the depression created by the glacier.
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from debris covered glaciers. This increase in glacial lake formation also indicates an increase in occurrence of
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where post-glacial sediments are normally between 4 and 6 metres deep. These lakes are often surrounded by
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The distribution of these elements, within the lake bed, are attributed to the condition of the
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MacKereth, F. J. H. (1966). "Some chemical observations on post-glacial lake sediments".
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Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
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Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
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in Argentina to witness the collapse of the cyclically formed arch of ice from the
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as seen from space. The Great Lakes are the largest glacial lakes in the world.
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Yao, Xiaojun; Liu, Shiyin; Han, Lei; Sun, Meiping; Zhao, Linlin (2018-02-01).
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Over time the glacial lake sediments are subjected to change. As seen in the
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events caused by damming and subsequent breaking of moraine and ice.
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once held more water than contained by all lakes in the world today.
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Buckel, J.; Otto, J.C.; Prasicek, G.; Keuschnig, M. (2018).
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Trace Fossils as Indicators of Sedimentary Environments
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These lakes are clearly visible in aerial photos of
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"Ibón" is the local word in 1: 1125:. 2018-03-13. Archived from 172:Since the glaciation of the 807:Global and Planetary Change 655:, view from the mouse tower 183:glacial lake outburst flood 1818: 1095:"About The Glacier Lagoon" 915:10.1016/j.epsl.2023.118463 29: 1751: 747:10.1007/s11442-018-1467-z 238:Holocene climatic optimum 105:Near the end of the last 434:, a glacial lake in the 352:Ibón de Sabocos, in the 81:The prehistoric glacial 61:, are of glacial origin. 30:Not to be confused with 985:. Bradt Travel Guides. 907:2023E&PSL.62418463Z 979:Evans, Andrew (2008). 864:10.1098/rstb.1966.0001 788:10.1098/rstb.1966.0001 302:Argentino glacial lake 293: 290:Argentino glacial lake 253: 86: 74: 62: 1709:Giant current ripples 455:Glacial Lake Missoula 306:Perito Moreno glacier 288: 281:Societal perspectives 251: 198:English Lake District 80: 68: 48: 587:Glacier cirque lake 1646:Moraine-dammed lake 1473:Subglacial eruption 1055:2016NatSR...621064G 856:1966RSPTB.250..165M 819:2018GPC...164...39B 780:1966RSPTB.250..165M 738:2018JGSci..28..193Y 688:Moraine-dammed lake 477:Saif-ul-Malook Lake 234:Last Glacial Period 1478:Subglacial volcano 1461:Volcanic relations 1043:Scientific Reports 364:for glacial lakes. 294: 254: 87: 75: 63: 1802:Glacial landforms 1779: 1778: 1747: 1746: 1265:Accumulation zone 1129:on March 16, 2018 1063:10.1038/srep21064 1014:(12): 1539–1561. 965:978-0-444-53813-0 399:river, seen from 327:Valyavishki Lakes 141:features such as 36:Supraglacial lake 16:(Redirected 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Index

Glacial Lake
Subglacial lake
Supraglacial lake
Proglacial lake

Seven Rila Lakes
Rila
Bulgaria

Great Lakes

Lake Agassiz
glacier
glacial period
drumlins
hills
Lake District
England
drumlins
moraines
eskers
erosional
striations
chatter marks
landforms
ice age
Little Ice Age
climate change
glacial lake outburst flood
English Lake District

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