Extending electromagnetic methods to map coastal pore water salinities.

  title={Extending electromagnetic methods to map coastal pore water salinities.},
  author={Wm Jason Greenwood and Sarah E. Kruse and Peter W Swarzenski},
  journal={Ground water},
  volume={44 2},
The feasibility of mapping pore water salinity based on surface electromagnetic (EM) methods over land and shallow marine water is examined in a coastal wetland on Tampa Bay, Florida. Forward models predict that useful information on seabed conductivity can be obtained through <1.5 m of saline water, using floating EM-31 and EM-34 instruments from Geonics Ltd. The EM-31 functioned as predicted when compared against resistivity soundings and pore water samples and proved valuable for profiling… CONTINUE READING