None
Dataset (offsite)
2011-06-08
creation
Minisparker seismic-reflection data of field activity S-07-11-SC: offshore San Diego, and Los Angeles Counties, southern California from 2011-06-08 to 2011-06-22
This dataset includes raw and processed, high-resolution seismic-reflection data collected in 2011 to collect information on active offshore faults. The survey area is offshore southern California between Long Beach and San Diego. The data were collected aboard the U.S. Geological Survey R/V Parke Snavely. The seismic-reflection data were acquired using a SIG 2mille minisparker system. Subbottom acoustic penetration spanned tens to several hundreds of meters, variable by location and equipment type.
Citation: Sliter, R.W., Conrad, J.E., Ryan, H.F., and Triezenberg, P.J., 2017, Minisparker seismic-reflection data of field activity S-07-11-SC: offshore San Diego, and Los Angeles Counties, southern California from 2011-06-08 to 2011-06-22: U.S. Geological Survey data release, doi:10.5066/F7SF2TCV
compilation
Seismic:Active:SCS
Seismic:Reflection
Other
DigitalSeg:DigitallyAcquired
Online
Unspecified
dataset
Seismic-reflection SEG-Y files were corrected for swell effects using Sioseis software. 1) SEG-Y header cdp numbers were defined using the "header" Sioseis processes, and a band pass filter was applied; 2) Water-bottom time/shot-point pairs where created and added to the headers to guide the automated swell correction; 3) A swell filter was applied to the data; 4) A 120 to 800 Hz bandpass filter, mute and agc were applied, and the results were exported as a processed SEG-Y file.
U.S. Geological Survey
Ray Sliter
rsliter@usgs.gov}
custodian
fieldSession
Seismic-reflection data were collected using a minisparker system that creates an acoustic signal by discharging a 500-Joule, high-voltage electrical pulse between electrodes and a ground that generates a frequency spectrum roughly between 200 and 1,600 Hz. At boat speeds of 4 to 4.5 nm/hour, seismic traces were collected roughly every 1 to 2 meters. The data were recorded on a 15-m-long hydrophone streamer in standard SEG-Y 32-bit floating-point format with Triton Subbottom Logger (SBL) software that merges seismic-reflection data with differential GPS navigation data.
U.S. Geological Survey
Ray Sliter
rsliter@usgs.gov}
custodian
33.54525
32.92998
-117.34633
-118.43905
Southern California
2011-06-08
2011-06-22
U.S. Geological Survey
Patrick Hart
hart@usgs.gov
pointOfContact
U.S. Geological Survey
Ray Sliter
rsliter@usgs.gov
custodian
open
Unspecified
Unspecified
Unspecified
resourceProvider
Hydrophone_Streamer
SeismicSource_Sparker
digital
WGS84
no
410
2021-09-13
U.S. Geological Survey
Peter Triezenberg
ptriezenberg@usgs.gov
pointOfContact
Seismic Metadata v.1
2016-12-15