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The model mimics these using combinations of electrical components (resistors, capacitors, inductors) and signal generators to provide time-dependent inputs. The model simulates how a storm surge, typically approaching from the North, might move southwards across the North Sea. It predicts water flow
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where electrical voltage and current are used to mimic the height and flow of water. The North Sea is represented as a grid with approximately 80 nodes which are connected electrically so that the flow of electricity between the nodes represents the flow of water between different points of the North
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Digital computers (where the equations of flow are solved numerically) were available in the 1960s but
Ishiguro argued that the analogue approach was more flexible and avoided the computational problems of working with discrete time steps. Subsequent improvements in electronic computers means that
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fellowship but he later became a permanent employee of the NIO. Ishiguro continued to develop and apply his analogue model until the early 1980s, when improvements in digital computers led many oceanographers to favour numerical simulations. Ishiguro retired in 1983 but continued to work on his
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and height at different locations and times allowing assessment of the maximum tidal height and the time at which the maximum might be expected at specific locations. A common use of the model was to investigate the need for
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The physical structure of the computer comprises two panels containing the electrical grid used for the simulation, and a separate input/output section. Inputs were made using a
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60:, the UK government set up a committee (known as the Waverley Committee) to develop a plan to prevent future disasters. The UK National Institute of Oceanography (NIO, now the
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Sea. The flow of water between points in the North Sea depends on the difference in water height, on fixed physical features such as coastlines and sea depth, on the
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179:"The Rise of Blame and Recreancy in the United Kingdom: A Cultural, Political and Scientific Autopsy of the North Sea Rood of 1953"
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https://collection.sciencemuseumgroup.org.uk/objects/co8428222/electronic-storm-surge-modelling-machine-storm-surge-model
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Ishiguro, S. (1961). "An electronic analogue method for tides and storm surges, and some applications to the North Sea".
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CBM 8032 Computer with 5¼" floppy disk drives; the output was displayed on an
Advance Instruments OS-240
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machine at home until his death in 2007. Ishiguro's storm surge computer was then acquired by the
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by the UK National
Institute of Oceanography. It is now on display in the Mathematics Gallery of the
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numerical modelling is now more commonly used than analogue modelling; modern examples include the
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Proceedings of the
Symposium on Mathematical and Hydrodynamical Methods of Physical Oceanography
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210:"A Pale View of Shizuo Ishiguro's Research - Abiki, the 1953 North Sea Flood, and Beyond"
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where it is part of a display in the
Mathematics Gallery about modelling the seas.
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500:"Electronic storm surge modelling machine | Science Museum Group Collection"
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427:"The dynamic simulation of unsteady frictional flow in tidal estuaries"
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432:Proceedings of the Institution of Civil Engineers
384:Proceedings of the Institution of Civil Engineers
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147:"Sea, Lake, and Overland Surge from Hurricane
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480:-: Storm Surges in the North Sea, -: - -
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379:"Computer methods in tidal hydraulics"
143:National Tidal and Sea-level Facility
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504:collection.sciencemuseumgroup.org.uk
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376:Rossiter, J.R.; Odd, N.V.M. (1968).
424:Ball, D.J.; McDowell, D.M. (1971).
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303:Bidston Observatory in Retrospect
299:"From storm surges to literature"
195:10.3197/096734011X13077054787145
32:built by Japanese oceanographer
476:"Storm Surges in the North Sea"
137:and recorded photographically.
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149:" model used by US agencies.
546:Tropical cyclone meteorology
328:Science Museum Group Journal
324:"Understanding storm surges"
120:National Oceanography Centre
62:National Oceanography Centre
26:Ishiguro Storm Surge Machine
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124:University of Southampton
85:Ishiguro’s machine is an
20:Shizuo Ishiguro's machine
322:Kennard, Claire (2016).
264:Oguri, Kazumasa (2018).
208:Miyazaki, Syuji (2020).
177:Hall, Alexander (2011).
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283:10.5928/kaiyou.27.5_189
183:Environment and History
58:North Sea flood of 1953
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75:Science Museum, London
56:Following the serious
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297:Wolf, Judith (2017).
270:Oceanography in Japan
266:"Dr. Shizuo Ishiguro"
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135:oscilloscope
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96:tidal forces
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38:storm surges
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81:Description
48:in London.
535:Categories
509:2021-06-04
485:2021-06-04
308:2021-06-04
250:2021-06-04
165:References
452:1753-7789
404:1753-7789
348:2054-5770
237:242404693
223:: 37–39.
131:Commodore
112:sea walls
42:North Sea
153:See also
102:and the
122:at the
52:History
40:in the
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159:Deltar
70:UNESCO
28:is an
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244:(PDF)
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