Geophysics Applied to Geotechnical Problems in a Marine Environment: A Case Study - Monterey Bay

Abstract : Geophysical systems consisting of electrical and acoustical tools were developed and special mapping techniques applied to obtain geotechnical data in Monterey Bay, California. The objective of the field exercise was to try and relate geophysical measurements to the mass physical properties and engineering properties of sea-floor sediments. Measurements consisted of; (1) mapping the Rayleigh Reflection Coefficient continuously by a ship underway, (2) measuring in situ, the propagation velocities of compressional and transverse (shear) waves, and (3) taking both underway and in situ measurements of sediment conductivity.