Month and year defended: January, 2010

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This thesis investigates the theory, develops the technology and demonstrates the applicability for synchronous in-situ mapping of the magnetic and electric signatures of marine near-surface sediments. A marine electromagnetic profiler has been developed for coastal and shelf operations in 5 to 500 m water depths. The system was designed to resolve subtle and gradual variations in silt and clay content, porosity and diagenesis state of marine sediments at a sub-meter scale. An electromagnetic (EM) induction sensor (Geophex GEM_3) was modified for submarine operations and mounted into a special bottom-towed sled. Seafloor magnetic susceptibility...

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