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EXPLORING THE OCEAN BASINS WITH SATELLITE ALTIMETER DATA

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Author Topic: EXPLORING THE OCEAN BASINS WITH SATELLITE ALTIMETER DATA  (Read 2314 times)
Karissa Oleyanin
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« Reply #15 on: February 01, 2009, 02:19:15 am »

Lithospheric Structure
There are numerous other scientific applications that cannot be described in a short report. One of the traditional uses of marine gravity measurements is to estimate the thickness of the elastic portion of the tectonic plates. When a volcano forms on the ocean floor it provides a large downward load on the plate causing it to deform. This deformation is appears in the gravity field as a donut-shaped gravity low surrounding the gravity high associated with the volcano itself. By measuring the amplitude and width of the gravity low and relating this to the size of the volcano as measured my a ship with an echo sounder, one can establish the thickness and strength of the elastic plate. The new satellite-derived gravity data enable researchers to perform this type of analysis everywhere in the oceans. Thus scientists can now probe the outermost part of the earth using these and other methods.




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For more information see:

McGraw-Hill Yearbook of Science and Technology, p. 178-180, 1995.
Sandwell, D. T., Geophysical Applications of Satellite Altimetry, Reviews of Geophysics Supplement, p. 132-137, 1990.
 

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