Woods Hole Oceanographic Institution

Dr Rob. L. Evans

»Electrical Lithosphere Beneath the Kaapvaal Craton
»Gulf Of Mexico Gas Seep
»MELT MT Results
»MELT Area Off-Axis Structure
»Wrightsville Beach Geophysics and Hydrology
»Karst Formation off North Carolina
»Review of Shallow Offshore EM Work
»EPR MMR Experiment
»Towed EM System
»Offshore MT and Subduction Systems
»Shallow Porosity Structure on the Continental Shelf
»Oceanic and Continental Mantle Resistivity
»New Jersey EM Survey
»Eel River EM Survey
»Impact of groundwater on EM data
»Electrical structure of Slave Craton
»Report of Shoreline Change Workshop

Towed EM System

The attached PDF provides a description of the WHOI towed EM system that can be used to provide maps of seafloor resistivity over the top 20m of seafloor. The system has been used in water depths from 10m out to 1300m and for a variety of purposes including mapping sedimentary porosity, understanding coastal groundwater discharge, and mapping seafloor gas vents and gas hydrate accumulations.

FILE » EM_System_7927.pdf

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