Controlled Source Electromagnetic Sounding off the Coast of Eureka California

Abstract

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 seafloor 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 and geophysical studies. Data was interpreted for a one-dimensional conductivity structure with an iterative least square scheme. The electrical properties interpreted from the EM measurements have been compared with the available bottom towed EM soundings in the area.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1997
Accession Number
ADA341650

Entities

People

  • Edward C. Mozley
  • Juan Reynaud
  • Will Avera

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Amplifiers
  • California
  • Conductivity
  • Earth Sciences
  • Electric Fields
  • Electrical Impedance
  • Electrical Properties
  • Electricity
  • Frequency
  • Global Positioning Systems
  • High Resolution
  • Magnetic Detectors
  • Magnetic Fields
  • Measurement
  • Military Research
  • Sedimentation
  • Sediments

Readers

  • Acoustical Oceanography.
  • Plasma Physics / Magnetohydrodynamics
  • Urban Planning and Geography.