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U.S. Geological Survey Open-File Report 2011-1040

Continuous Resistivity Profiling Data From Great South Bay, Long Island, New York


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Figure 6, map of CRP profile locations and profile showing low-salinity groundwater extending more than 100 meters offshore along the north shore of Great South Bay.
Figure 6. Location map showing a portion of the continuous resistivity profiling (CRP) tracklines and a graph of the inverted resistivity profile associated with the red trackline. Low-salinity groundwater extends 100 meters or more offshore along much of the north and south shores of Great South Bay, based on high-resistivity anomalies (red and orange colors) in CRP data and offshore groundwater sampling. This shore-perpendicular CRP profile (red trackline in map) is typical of those collected in these settings, especially adjacent to modern marshes and near the mouths of tidal creeks. The profile color scale ranges from blues to reds with reds representing the higher resistivity values corresponding to fresher (less saline) groundwater. Click on image for larger version.

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