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

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Metadata:

Identification_Information
Data_Quality_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Ray W. Sliter
Originator: William R. Normark
Originator: Christina E. Gutmacher
Publication_Date: 2005
Title:

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

Edition: Version 1.0
Geospatial_Data_Presentation_Form:

Text report containing graphical map images and geophysical data images (no spatial referencing).

Series_Information:

Series_Name: U.S. Geological Survey Open-File Report
Issue_Identification: USGS OFR 2005-1084

Publication_Information:

Publication_Place: Menlo Park, California
Publisher: United States Geological Survey

Online_Linkage: https://doi.org/10.3133/ofr20051084
Online_Linkage: https://pubs.usgs.gov/of/2005/1084/

Description:

Abstract:

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 Pliocene-Pleistocene 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 gas-injector 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.
These data are also available via GeoMapApp (http://www.geomapapp.org/) and Virtual Ocean ( http://www.virtualocean.org/) earth science exploration and visualization applications.

Purpose:

These MCS data were collected as part of a project to identify the active fault systems in the southern California coastal zone, including the continental shelf and adjacent deep basins, that pose the greatest potential seismic hazards for the most populated urban corridor along the U.S. Pacific margin. See http://walrus.wr.usgs.gov/cabrillo/tierra/index.html for more information. This report is prepared to make these data available to science researchers, students, and other interested parties.

Supplemental_Information:

Additional information about the field activities from which these data were derived is available online at:
https://cmgds.marine.usgs.gov/fan_info.php?fan=S197SC https://cmgds.marine.usgs.gov/fan_info.php?fan=A198SC https://cmgds.marine.usgs.gov/fan_info.php?fan=O199SC https://cmgds.marine.usgs.gov/fan_info.php?fan=A100SC
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19970801
Ending_Date: 20001001

Currentness_Reference: Time span of data collection and initial archiving.

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -119.00000
East_Bounding_Coordinate: -117.00000
North_Bounding_Coordinate: +34.16667
South_Bounding_Coordinate: +32.50000

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:3c5c8b00-7131-4743-ac7a-f1bf7856f5a8

Theme:

Theme_Keyword_Thesaurus: Global Change Master Directory (GCMD)
Theme_Keyword:

Parameters Keywords > OCEANS > MARINE SEDIMENTS > STRATIGRAPHIC SEQUENCE

Theme_Keyword: Parameters Keywords > SOLID EARTH > ROCKS/MINERALS > SEDIMENTS
Theme_Keyword:

Parameters Keywords > SOLID EARTH > SEISMOLOGY > SEISMIC PROFILE

Theme_Keyword: Platform Keywords > SHIPS
Theme_Keyword: Instrument Keywords > AIRGUN ARRAYS
Theme_Keyword: Instrument Keywords > GEOPHONES
Theme_Keyword: Instrument Keywords > HYDROPHONES
Theme_Keyword: Instrument Keywords > SEISMIC REFLECTION PROFILERS

Theme:

Theme_Keyword_Thesaurus: None
Theme_Keyword: active fault
Theme_Keyword: airgun
Theme_Keyword: deformation
Theme_Keyword: digital data
Theme_Keyword: earthquake hazards
Theme_Keyword: fault zone
Theme_Keyword: multichannel
Theme_Keyword: sediment deformation
Theme_Keyword: seismic data
Theme_Keyword: seismic reflection

Theme:

Theme_Keyword_Thesaurus: Data Categories for Marine Planning
Theme_Keyword: distributions
Theme_Keyword: substrate

Theme:

Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords
Theme_Keyword: seismic reflection profiling
Theme_Keyword: marine geophysics

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: seismic reflection methods
Theme_Keyword: sub-bottom profiling
Theme_Keyword: marine geophysics
Theme_Keyword: marine geology
Theme_Keyword: profiles
Theme_Keyword: hazards
Theme_Keyword: tsunamis

Place:

Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
Place_Keyword: Pacific Ocean
Place_Keyword: State of California
Place_Keyword: Dana Point
Place_Keyword: Los Angeles
Place_Keyword: Point Dume
Place_Keyword: San Diego
Place_Keyword: Santa Monica Bay

Place:

Place_Keyword_Thesaurus: None
Place_Keyword: Continental Borderland
Place_Keyword: Southern California
Place_Keyword: USA

Temporal:

Temporal_Keyword_Thesaurus: None
Temporal_Keyword: Holocene
Temporal_Keyword: Quaternary

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(s) 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
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: https://pubs.usgs.gov/of/2005/1084/images/ge-overview.png
Browse_Graphic_File_Description: Index map of area covered in this report.
Browse_Graphic_File_Type: PNG

Browse_Graphic:

Browse_Graphic_File_Name: https://pubs.usgs.gov/of/2005/1084/maps/o199/lines/221.html
Browse_Graphic_File_Description:

Example of Multichannel seismic data accessible via this report.

Browse_Graphic_File_Type: JPEG

Data_Set_Credit:

Peter Triezenberg produced the interactive web pages for this report.

Native_Data_Set_Environment: SEG-Y

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report: Data have not been independently verified.

Logical_Consistency_Report: Undetermined.
Completeness_Report:

Reference the full report for a description of data coverage. All MCS data collected on the referenced cruises have been included in this report, with the exception of those collected in Los Angeles Harbor and shelf, for an aquifer study, on A-1-00-SC. 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.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Tracklines shown are for the GPS antenna on the ships collecting the multichannel seismic data. Shot point numbers in the data files correspond to those in the navigation files. The horizontal positional accuracy of the seismic data thus linked to ship's position is estimated to be within 40 meters.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

Depths shown in the seismic data files are in milliseconds (round trip travel time) and are referenced to sea level.

Lineage:

Process_Step:

Process_Description:

Refer to report sections "Cruise history", "Data acquisition methods", and "Data processing" for details of geophysical data acquisition and processing sequence used for MCS data in this report. Ray W. Sliter

Process_Date: 2003

Process_Step:

Process_Description:

Plotted shot point map of cruises using GMT <http://gmt.soest.hawaii.edu/> to create sub-maps. Broke area into four sections for better viewing. Converted plots to TIFF and JPEG files for zooming in on sections. Ray W. Sliter

Process_Date: 2004

Process_Step:

Process_Description:

Used GEODAS (GEOphysical DAta System) to create a custom bathymetric and topographic grid for the southern California region covered by the cruise index map. The website is: <http://www.ngdc.noaa.gov/mgg/geodas/geodas.html>. The parameters used are as follows: Grid database: US Coastal Relief Model Grids Lat/Lon Area Bounds: 34.16667 N to 32.50 N, 119.0 W to 117.0 W Grid Cell Size: 3 seconds Grid Cell Value Parameters: 4-byte integers, 10ths of meters Grid Format: xyz (lon, lat, depth) format, no header, space-delimited, exclude empty cells. Peter Triezenberg

Process_Date: 2004

Process_Step:

Process_Description:

Plotted tracklines of seismic reflection profiles using GMT <http://gmt.soest.hawaii.edu/> to create maps. Created HTML image maps to allow mouse-over of trackline details and links to profile displays. Peter Triezenberg

Process_Date: 2005

Process_Step:

Process_Description:

Keywords section of metadata optimized for discovery in USGS Coastal and Marine Geology Data Catalog.

Process_Date: 20170124
Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey
Contact_Person: Alan O. Allwardt

Contact_Position: Contractor -- Information Specialist
Contact_Address:

Address_Type: mailing and physical address
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060

Contact_Voice_Telephone: 831-460-7551
Contact_Facsimile_Telephone: 831-427-4748
Contact_Electronic_Mail_Address: aallwardt@usgs.gov

Process_Step:

Process_Description:

Edits were made to bring the metadata up to current PCMSC standards including standardizing authors' names, adding a doi# link, correcting typos, refining keywords, and using current access and distribution liability statements. Point of Contact and Metadata Contact information sections were changed to static PCMSC contact information. No data were changed. Users are advised to compare the metadata date of this file to any similar file to ensure they are using the most recent version.

Process_Date: 20200804
Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Susan A Cochran
Contact_Organization:

U.S. Geological Survey, Pacific Coastal and Marine Science Center

Contact_Address:

Address_Type: mailing and physical
Address: 2885 Mission St.
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060
Country: United States

Contact_Voice_Telephone: 831-460-7545
Contact_Electronic_Mail_Address: scochran@usgs.gov

Process_Step:

Process_Description:

Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed.

Process_Date: 20201019
Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross

Contact_Position: Marine Geologist
Contact_Address:

Address_Type: Mailing and Physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598

Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:

UTM_Zone_Number: 11
Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -117.0
Latitude_of_Projection_Origin: 0.0
False_Easting: 500000
False_Northing: 0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:

Abscissa_Resolution: 25
Ordinate_Resolution: 25

Planar_Distance_Units: Meters

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: GRS1980
Semi-major_Axis: 6378206.4
Denominator_of_Flattening_Ratio: 294.98

Entity_and_Attribute_Information:

Overview_Description:

Entity_and_Attribute_Overview:

Locations of data profiles are shown as color-coded map images at an unspecified projection and scale. These HTML image maps allow mouse over trackline details and links to profile displays. The images of the reflection profiles are rendered in TIFF and JPEG image formats. Links are provided to the SEG-Y digital data for each line.

Entity_and_Attribute_Detail_Citation: none

Distribution_Information:

Distributor:

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: 95060-5792
Country: US

Contact_Voice_Telephone: 831-427-4747
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov

Resource_Description:

United States Geological Survey Open-File Report 2005-1084 This report is distributed on-line only. Access it at https://pubs.usgs.gov/of/2005/1084/.

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: TIFF, JPEG, SEG-Y, ASCII

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: https://pubs.usgs.gov/of/2005/1084/
Network_Resource_Name: https://doi.org/10.3133/ofr20051084

Fees: None

Metadata_Reference_Information:

Metadata_Date: 20201019
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: 95060-5792
Country: US

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

This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/SeriesReports/OFR/OFR_2005-1084/MSC_SoCal_PartA.html>