The U.S. Geological Survey (USGS) collected high-resolution seismic-reflection profiles in July 2009, offshore southern California, in the San Pedro Basin between San Pedro and Santa Catalina Island. The survey was designed to image faults and folds associated with movement on the numerous faults offshore southern California, including the San Pedro Basin, San Diego Trough, and several other unnamed fault zones. These data can be used to update the USGS Quaternary fault database and in shaking hazard models developed by the Working Group for California Earthquake probabilities. This work was funded by the USGS Coastal and Marine Catastrophic Hazards Project. Data were collected aboard the USGS R/V Parke Snavely. Approximately 197 km of single-channel seismic-reflection data were acquired using a SIG 2mille minisparker. An additional 42 km of data were collected using an EdgeTech Chirp 512 subbottom profiler [DOI:10.5066/F75Q4T8F]. Subbottom acoustic penetration spanned tens to several hundreds of meters, variable by location. This data release contains raw and processed digital SEG-Y files and ASCII navigation files of the surveyed transects. The images of bedrock, sediment deposits and tectonic structure provide geologic information that is essential to hazard assessment, regional sediment management and coastal and marine spatial planning at Federal, State and local levels, as well as to future research on the geomorphic, sedimentary, tectonic and climatic record of Southern California.
Are there legal restrictions on access or use of the data?
Access_Constraints:None. USGS-authored or -produced data and information are in the public domain.Use_Constraints:USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originator(s) of the dataset and in products derived from these data. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. This information is not intended for navigational purposes.
Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.
|Data format:||Zip file contains the raw and swell-corrected seismic data per navigation line in format SEG-Y (version SEG-Y rev 1) Size: 4488|