Controlled Source Electromagnetic Sounding off the Coast of Eureka California

Controlled electromagnetic (EM) measurements were conducted with a ship-towed electric bipole source and fixed electric and magnetic field sensor units that were deployed on the seatloor in 62 meters of water near Eureka, California. The objective was to determine the electrical properties of the marine sediments to depths greater than 20 meters. The survey site was positioned in a region that had been investigated by numerous shallow geologic/geophysical studies.