Minisparker seismic-reflection data acquired offshore San Francisco and Pacifica during USGS field activity S-16-10-NC

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Alicia F. Balster-Gee
Originator: Ray W. Sliter
Originator: Stephanie L. Ross
Originator: Holly F. Ryan
Publication_Date: 20231003
Title:
Minisparker seismic-reflection data acquired offshore San Francisco and Pacifica during USGS field activity S-16-10-NC
Geospatial_Data_Presentation_Form: seismic-reflection data in SEG-Y format
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/P9ZP0CBV
Publication_Information:
Publication_Place:
Pacific Coastal and Marine Science Center, Santa Cruz, California
Publisher: U.S. Geological Survey
Online_Linkage: https://doi.org/10.5066/P9ZP0CBV
Online_Linkage: Larger_Work_Citation:
Citation_Information:
Originator: Alicia F. Balster-Gee
Originator: Ray W. Sliter
Originator: Stephanie L. Ross
Originator: Holly F. Ryan
Publication_Date: 2023
Title:
Minisparker and chirp seismic-reflection data acquired offshore San Francisco and Pacifica during USGS field activity S-16-10-NC
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/P9ZP0CBV
Publication_Information:
Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA
Publisher: U.S. Geological Survey
Other_Citation_Details:
Suggested Citation: Balster-Gee, A.F., Sliter, R.W., Ross, S.L., Ryan, H.F., 2023, Minisparker and chirp seismic reflection data acquired offshore San Francisco and Pacifica during USGS field activity S-16-10-NC: U.S. Geological Survey data release, https://doi.org/10.5066/P9ZP0CBV.
Online_Linkage: https://doi.org/10.5066/P9ZP0CBV
Online_Linkage:
Description:
Abstract:
Single-channel minisparker seismic-reflection data were collected by the U.S. Geological Survey in August 2010, offshore San Mateo County, California. Data were collected aboard the R/V Snavely during field activity S-16-10-NC. Minisparker data were collected using a SIG 2-mille minisparker sound source combined with a single-channel streamer and recorded with a Triton SB-Logger.
Purpose:
This work was funded by the USGS Coastal and Marine Geology Program’s Coastal and Marine Catastrophic Hazards project . The high-resolution seismic-reflection profiles provide shallow geologic structure, stratigraphy and fault geometry information for the San Gregorio, San Andreas, and Golden Gate faults to be used to update the USGS Quaternary fault database and to use in shaking-hazard models developed by the Working Group for California Earthquake probabilities. Other objectives of the mission were to determine thickness of Holocene sediments and to verify surficial mapping. These data and information are intended for science researchers, students, policy makers, and the general public.
Supplemental_Information:
Additional information about the field activities from which these data were derived is available online at:
http://cmgds.marine.usgs.gov/fan_info.php?fan=S1610NC
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in Esri format, this metadata file may include some Esri-specific terminology.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20100805
Ending_Date: 20100808
Currentness_Reference: ground condition at time data were collected
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -122.47924
East_Bounding_Coordinate: -122.63016
North_Bounding_Coordinate: 37.75645
South_Bounding_Coordinate: 37.47502
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:8f1c75fc-0b42-45cd-ade8-8509d0dfe65b
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: Oceans
Theme_Keyword: Elevation
Theme_Keyword: geoscientificinformation
Theme:
Theme_Keyword_Thesaurus: Data Categories for Marine Planning
Theme_Keyword: Bathymetry and Elevation
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: sub-bottom profiling
Theme_Keyword: geospatial datasets
Theme_Keyword: marine geophysics
Theme:
Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords
Theme_Keyword: seismic reflection profiling
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Hazards and Resources Program
Theme_Keyword: CMHRP
Theme_Keyword: Pacific Coastal and Marine Science Center
Theme_Keyword: PCMSC
Place:
Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
Place_Keyword: Pacific Ocean
Place_Keyword: State of California
Place_Keyword: Pacifica
Place_Keyword: San Francisco
Place_Keyword: Daly City
Place_Keyword: San Mateo County
Place:
Place_Keyword_Thesaurus: NGA GEOnet Names Server (GNS)
Place_Keyword: North Pacific Ocean
Access_Constraints: None
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 of the dataset and in products derived from these data. This information is not intended for navigation purposes.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Contact_Person: PCMSC Science Data Coordinator
Contact_Address:
Address_Type: mailing and physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060
Contact_Voice_Telephone: 831-427-4747
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name: S-16-10-NC.sparker.preview.png
Browse_Graphic_File_Description:
Map of minisparker seismic profiles acquired during USGS field activity S-16-10-NC
Browse_Graphic_File_Type: PNG
Native_Data_Set_Environment: SEG-Y Rev
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Quality control was conducted during acquisition. Some seismic profiles have gaps in them due to system crashes or intentional shutdowns as required, under terms of our operating permit, to protect marine mammals. Minor swell correction artifacts exist at line starts and ends as well as in areas where seafloor amplitudes are low.
Logical_Consistency_Report:
Quality control was conducted during acquisition and processing to ensure consistency of SEG-Y header navigation and seismic-reflection data that matches bathymetry along the tracklines.
Completeness_Report:
Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Position data were provided by a Hemisphere V100 Global Positioning System using L1, C/A code and carrier phase smoothing with a stated accuracy of 60 centimeters.
Lineage:
Process_Step:
Process_Description:
Minisparker data were collected using a minisparker system that creates an acoustic signal by discharging a 500-Joule, high voltage pulse between electrodes and a ground that generates a high-frequency source signal. Data were acquired using a single channel digital hydrophone streamer and recorded in SEG-Y 32-bit floating point using a Triton SB-Logger. Lines designated with a “T” are data collected in turns between the main lines.
Process_Date: 20100824
Process_Step:
Process_Description:
Raw SEG-D format seismic shots were imported into Shearwater Reveal seismic software for processing. Navigation was converted to UTM zone 10N and stored in header bytes 73 and 77. Processing steps include: water column mute, 50-Hz highpass butterworth filter, swell correction over 51 traces, 50-70-900-1400 Hz bandpass filter, spiking deconvolution, FX deconvolution, top and bottom mute, 150ms AGC and output to SEG-Y format. SEG-Y files were zipped into a single zip file (S-16-10-NC.sparker.zip).
Process_Date: 20220801
Spatial_Data_Organization_Information:
Indirect_Spatial_Reference:
Horizontal X and Y locations for the seismic profile locations are stored in the SEG-Y data trace headers in header bytes 73 and 77.
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: WGS 1984 UTM Zone 10N
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -123.0
Latitude_of_Projection_Origin: 0.0
False_Easting: 500000.0
False_Northing: 0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.0001
Ordinate_Resolution: 0.0001
Planar_Distance_Units: Meter
Geodetic_Model:
Horizontal_Datum_Name: D WGS 1984
Ellipsoid_Name: WGS 1984
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257223563
Vertical_Coordinate_System_Definition:
Depth_System_Definition:
Depth_Datum_Name: Local surface
Depth_Resolution: 0.1
Depth_Distance_Units: meters
Depth_Encoding_Method: Attribute values
Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview: Seismic Shots with Time Stamp in standard SEG-Y file format
Entity_and_Attribute_Detail_Citation:
Society of Exploration Geophysicists (SEG) Technical Standards, available for download at http://seg.org/Publications/SEG-Technical-Standards
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey - CMGDS
Contact_Address:
Address_Type: mailing and physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060
Contact_Voice_Telephone: 831-427-4747
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov
Resource_Description:
These data are available in SEG-Y format in a single zip file (S-16-10-NC.sparker.zip).
Distribution_Liability:
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.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: SEG-Y
Format_Version_Number: SEGY rev 1
Format_Information_Content:
Zip file contains the processed seismic data per navigation line.
File_Decompression_Technique:
Winzip, 7-zip, or Winrar are free software that will open .zip files
Transfer_Size: 1800
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information: Access_Instructions:
Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to download a zipped file of data, metadata, and a map of the minisparker tracklines. The second link points to a landing page for the entire data release.
Fees: None.
Technical_Prerequisites:
Use of SEG-Y data requires specialized software, such as ProMax and Seisworks by Landmark Geophysical; FOCUS and SeisX by Paradigm Geophysical; SPW by Parallel Geoscience; VISTA by Seismic Image Software; SeiSee by Dalmorneftegeophysica (DMNG); amongst others.
Metadata_Reference_Information:
Metadata_Date: 20231003
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Contact_Person: PCMSC Science Data Coordinator
Contact_Address:
Address_Type: mailing and physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060
Contact_Voice_Telephone: 831-427-4747
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov
Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

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