Electricity: measuring and testing – Of geophysical surface or subsurface in situ – Using electrode arrays – circuits – structure – or supports
Patent
1990-05-07
1991-07-16
Wieder, Kenneth A.
Electricity: measuring and testing
Of geophysical surface or subsurface in situ
Using electrode arrays, circuits, structure, or supports
324697, 324699, 324716, 324724, 73304R, 340612, G01V 302, G01V 308
Patent
active
050327941
ABSTRACT:
Changes in underwater sediment level in a marine environment are monitored electronically using a probe embedded in the sediment. The probe includes an electrical current source to generate an electric field extending across the sediment interface. Voltage measurements are taken at at least three sensors on the probe whose positions are known relative to the current source. The height of the sediment interface relative to the current source can then be calculated, and logged, and changes in sediment level can be monitored. The conductivities of the sediment and seawater can also be calculated by taking additional voltage measurements.
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Nicol John L.
Ridd Peter V.
Wolanski Eric
Australian Institute of Marine Science
Edmonds Warren S.
James Cook University of Northern Queensland
Wieder Kenneth A.
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