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Measurement of near-surface seismic compressional wave velocities using refraction tomography at a proposed construction site on the Presidio of Monterey, California

October 3, 2012

The U.S. Army Corps of Engineers is determining the feasibility of constructing a new barracks building on the U.S. Army Presidio of Monterey in Monterey, California. Due to the presence of an endangered orchid in the proposed area, invasive techniques such as exploratory drill holes are prohibited. To aid in determining the feasibility, budget, and design of this building, a compressional-wave seismic refraction survey was proposed by the U.S. Geological Survey as an alternative means of investigating the depth to competent bedrock. Two sub-parallel profiles were acquired along an existing foot path and a fence line to minimize impacts on the endangered flora. The compressional-wave seismic refraction tomography data for both profiles indicate that no competent rock classified as non-rippable or marginally rippable exists within the top 30 feet beneath the ground surface.

Citation Information

Publication Year 2012
Title Measurement of near-surface seismic compressional wave velocities using refraction tomography at a proposed construction site on the Presidio of Monterey, California
DOI 10.3133/ofr20121191
Authors Michael H. Powers, Bethany L. Burton
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Open-File Report
Series Number 2012-1191
Index ID ofr20121191
Record Source USGS Publications Warehouse
USGS Organization Crustal Geophysics and Geochemistry Science Center