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U.S. Geological Survey
Open-File Report 2005-1084

Multichannel seismic-reflection data acquired off the coast of southern California – Part A 1997, 1998, 1999, and 2000.


Ray W. Sliter1, William R. Normark1, and Christina E. Gutmacher1

1U.S. Geological Survey, Menlo Park, CA 94025

Cruise history
Data acquisition methods
Data processing
Data tables
References cited
Table of Contents

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Multichannel seismic-reflection (MCS) data were collected in the California Continental Borderland as part of southern California Earthquake Hazards Task. Five data acquisition cruises conducted over a six-year span collected MCS data from offshore Santa Barbara, California, south to the Exclusive Economic Zone boundary with Mexico. The primary mission was to map late Quaternary deformation as well as identify and characterize fault zones that have potential to impact high population areas of southern California. To meet its objectives, the project work focused on the distribution, character, and relative intensity of active (i.e., Holocene) deformation along the continental shelf and basins adjacent to the most highly populated areas. In addition, the project examined the record of how deformation shifted in space and time to help identify actively deforming structures that may constitute current significant seismic hazards.

The MCS data accessible through this report cover the first four years of survey activity and include data from offshore Malibu coastal area west of Santa Monica, California, to the southern survey limit offshore San Diego. The MCS data, which were collected with a 250-m-long, 24-channel streamer, used a small generator-injector (GI) airgun source. This system provided optimum resolution of the upper 1 to 2 km of sediment for mapping active fault systems. The report includes trackline maps showing the location of the data, as well as both digital data files (SEG-Y) and images of all of the profiles.
maintained by Michael Diggles
last modified November 20, 2006 (mfd)

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