Data Release for the 2016 East Bay Seismic Imaging Investigation of the Hayward Fault Zone

Dates

Publication Date: 2020-12-07
Start Date: 2016-10-03
End Date: 2016-10-04

Citation

Goldman, M.R., Catchings, R.D., Strayer, L.M., Chan, J.H., Criley, C.C., Sickler, R.R., and McEvilly, A.T., 2020, Data Release for the 2016 East Bay Seismic Imaging Investigation of the Hayward Fault Zone: U.S. Geological Survey data release, https://doi.org/10.5066/P941WN4P.

Summary

In October 2016, we acquired an approximately 15-km-long seismic profile along a linear transect across the East Bay region of the San Francisco Bay area. Our goal was to image previously unknown strands of the Hayward Fault zone and to better delineate the structure and geometry of the main trace of the Hayward Fault. Our profile started near the southern border of San Leandro, California at the San Francisco Bay shoreline, trended ENE through the northern edge of Castro Valley, California, and ended approximately 5 km WSW of San Ramon, California. The data were analyzed using refraction tomography modeling, reflection processing, and guided-wave analysis. The analyzed data are presented in separate reports by Strayer and others (submitted [...]

Summary

In October 2016, we acquired an approximately 15-km-long seismic profile along a linear transect across the East Bay region of the San Francisco Bay area. Our goal was to image previously unknown strands of the Hayward Fault zone and to better delineate the structure and geometry of the main trace of the Hayward Fault. Our profile started near the southern border of San Leandro, California at the San Francisco Bay shoreline, trended ENE through the northern edge of Castro Valley, California, and ended approximately 5 km WSW of San Ramon, California. The data were analyzed using refraction tomography modeling, reflection processing, and guided-wave analysis. The analyzed data are presented in separate reports by Strayer and others (submitted to BSSA). The seismic data were generated at 26 shotpoints: 16 shotpoints located along the profile (inline shotpoints) and 10 shotpoints offset from the profile and located within known or suspected fault traces (guided-wave shotpoints). Most shotpoints used explosive sources to generate the seismic waves, but three of the shotpoints used repeated hits from a 227-kg (500 lb) accelerated weight dropped ~2 feet above a steel plate to generate the seismic signal. Data from each shot were recorded by a total of 459 seismographs, mostly deployed along the profile at intervals ranging from 20 to 100 meters. This data release contains the raw field records from all explosive and weight drop shots. The raw field records are in a proprietary TRD format and consist of continuous seismograph recordings during the time of the data collection. Also included in this data release are multiple SEG-Y files consisting of thirty-second-long traces "cut" from the TRD files and resorted into conventional shot gathers. These data are in standard SEG-Y format, with the data samples in IBM floating point format. Data samples are in units of meters/second, without filtering or other data manipulation.

Contacts

Point of Contact :: Mark R Goldman, Earthquake Hazards Program
Author :: Mark R Goldman, Rufus D Catchings, Luther M Strayer, Joanne H Chan, Coyn J Criley, Robert R Sickler, Adrian T McEvilly
Metadata Contact :: Mark R Goldman, Earthquake Science Center
Publisher :: U.S. Geological Survey
Data Owner :: Earthquake Hazards Program
Distributor :: U.S. Geological Survey - ScienceBase
SDC Data Owner :: Earthquake Hazards Program
USGS Mission Area :: Natural Hazards

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e16.xml Original FGDC Metadata	View	41.05 KB	application/fgdc+xml
e16.png		4 MB	image/png
e16.awd.csv		3.29 KB	text/csv
e16.geos.csv		23.54 KB	text/csv
e16.shots.csv		2.3 KB	text/csv
east_bay_16_guided_wave_shots_to_special_stations.segy		33.03 MB	application/unknown
east_bay_16_inline_shots_to_special_stations.segy		51.38 MB	application/unknown
east_bay_16_guided_wave_shots_to_100m_horz.segy		146.55 MB	application/unknown
east_bay_16_SP01_shots_to_all_stations.segy		160.93 MB	application/unknown
east_bay_16_SP04_shots_to_all_stations.segy		168.25 MB	application/unknown
east_bay_16_inline_shots_to_100m_horz.segy		227.97 MB	application/unknown
east_bay_16_inline_shots_to_100m_vert.segy		227.97 MB	application/unknown
east_bay_16_guided_wave_to_inline_vert.segy		309.61 MB	application/unknown
east_bay_16_inline_shots_to_inline_vert.segy		481.62 MB	application/unknown
east_bay_16_SP07_shots_to_all_stations.segy		512.06 MB	application/unknown
		1.07 GB	application/x-tar
		3.31 GB	application/x-tar
		6.98 GB	application/x-tar
		8.54 GB	application/x-tar
		3.03 GB	application/x-tar
e16.final.docx		21.14 KB	application/vnd.openxmlformats-officedocument.wordprocessingml.document

Purpose

Our goal is to image the Hayward Fault using P- and S-wave refraction tomography and analysis of guided-waves

Data Release for the 2016 East Bay Seismic Imaging Investigation of the Hayward Fault Zone

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