Landslide mass-wasting zones offshore of Southern California, 2023

Metadata also available as - [Questions & Answers] - [Parseable text] - [XML]

Metadata:

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Antoinette G. Papesh
Originator: Maureen L. Walton
Originator: James E. Conrad
Originator: Daniel S. Brothers
Originator: Jared W. Kluesner
Originator: Mary L. McGann
Publication_Date: 20230821
Title:

Landslide mass-wasting zones offshore of Southern California, 2023

Geospatial_Data_Presentation_Form: polygon shapefile
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9IIWTYL

Publication_Information:

Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA
Publisher: U.S. Geological Survey

Online_Linkage: https://doi.org/10.5066/P9IIWTYL
Online_Linkage:

https://www.sciencebase.gov/catalog/item/5ef12a1382ced62aaae18f65

Larger_Work_Citation:

Citation_Information:

Digital maps of submarine landslides and mass wasting features offshore of southern California, 2023

Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9IIWTYL

Publication_Information:

Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA
Publisher: U.S. Geological Survey

Online_Linkage: https://doi.org/10.5066/P9IIWTYL

Description:

Abstract:

Landslide mass-wasting zones have been mapped offshore of Southern California. Polygons were mapped from visual interpretation of high-resolution multibeam echosounder data (MBES) and single-beam echosounder data.

Purpose:

These data were compiled as a part of a USGS effort to understand the geologic processes of mass wasting offshore of Southern California. They are intended to provide baseline knowledge of the geology, geomorphology, and distribution of mass-wasting zones offshore of Southern California, for use by scientists, managers, and the general public. The data can be used with geographic information systems (GIS) software for research purposes.

Supplemental_Information:

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: 1998
Ending_Date: 20210730

Currentness_Reference: ground condition

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -121.542615
East_Bounding_Coordinate: -117.605206
North_Bounding_Coordinate: 34.388852
South_Bounding_Coordinate: 31.220786

Keywords:

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation
Theme_Keyword: oceans

Theme:

Theme_Keyword_Thesaurus: Data Categories for Marine Planning
Theme_Keyword: Distributions

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: scientific interpretation
Theme_Keyword: geospatial datasets
Theme_Keyword: earth characteristics
Theme_Keyword: sea-floor characteristics
Theme_Keyword: marine geophysics
Theme_Keyword: marine geology
Theme_Keyword: landslides
Theme_Keyword: hazards
Theme_Keyword: geologic processes
Theme_Keyword: oceanic lithosphere

Theme:

Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords
Theme_Keyword: natural agents of coastal change
Theme_Keyword: geology
Theme_Keyword: geophysics
Theme_Keyword: geological features
Theme_Keyword: hazards and disasters
Theme_Keyword: earthquake effects
Theme_Keyword: geologic mapping
Theme_Keyword: oceanographic observations

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

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:5ef12a1382ced62aaae18f65

Place:

Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
Place_Keyword: United States of America
Place_Keyword: State of California
Place_Keyword: 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(s) of the dataset and in products derived from these data.

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: masswastingzones_offshore_socal_2023_thumb.png
Browse_Graphic_File_Description:

Southern California location map with bathymetry and mass wasting/slide zones

Browse_Graphic_File_Type: PNG

Native_Data_Set_Environment:

Mac Pro, Late 2013, with macOS High Sierra, version 10.13.6 running Parallels Virtual Machine; ESRI ArcGIS 10.7.

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

No formal attribute accuracy tests were conducted. See the sedage_ref attribute within the shapefile, and the accompanying ReferencesCited_offshore_socal_2023.pdf file in the Attached Files section (https://www.sciencebase.gov/catalog/item/5d9bc778e4b0366162923190), for details on where to find accuracy information regarding the data reported in the sed_age attribute.

Logical_Consistency_Report: No formal logical accuracy tests were conducted.
Completeness_Report:

Dataset is considered complete for the information presented, as described in the abstract.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

These data and associated attributes have been created from several bathymetric datasets. Mass-wasting zone mapping was cross-checked where more than one bathymetric dataset spanned a suspected mass-wasting zone. The accuracy of mass-wasting zone mapping correlates to the highest resolution dataset that spans a particular mass-wasting zone.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: Peter Dartnell
Originator: Neal W. Driscoll
Originator: Daniel S. Brothers
Originator: James E. Conrad
Originator: Jared Kluesner
Originator: Graham Kent
Originator: Brian D. Andrews
Publication_Date: 2015
Title:

Colored shaded-relief bathymetry, acoustic backscatter, and selected perspective views of the inner continental borderland, southern California

Geospatial_Data_Presentation_Form: Raster Digital Data Set
Series_Information:

Series_Name: Scientific Investigations Map
Issue_Identification: DOI:10.3133/sim3324

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Online_Linkage: https://doi.org/10.3133/sim3324

Type_of_Source_Media: Digital Resource
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1998
Ending_Date: 2014

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: Dartnell and others, 2015
Source_Contribution:

High resolution multibeam bathymetry was used as a base layer to begin drawing polygons for landslide interpretation. This source is a compilation of new and publicly available multibeam bathymetry data gridded at 25-meter resolution. Links to the data sources used are in the Data Catalog of the report.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Peter Dartnell
Originator: Emily C. Roland
Originator: Nicole A. Raineault
Originator: Christopher M. Castillo
Originator: James E. Conrad
Originator: Renato Kane
Originator: Daniel S. Brothers
Originator: Jared W. Kluesner
Originator: Maureen A. L. Walton
Publication_Date: 2021
Title:

Colored shaded-relief bathymetry, acoustic backscatter, and selected perspective views of the northern part of the California Continental Borderland, southern California

Geospatial_Data_Presentation_Form: Raster Digital Data Set
Series_Information:

Series_Name: Scientific Investigations Map
Issue_Identification: DOI:10.3133/sim3473

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Online_Linkage: https://doi.org/10.3133/sim3473

Type_of_Source_Media: Digital resource
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1998
Ending_Date: 2018

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: Dartnell and others, 2021
Source_Contribution:

High resolution multibeam bathymetry was used as a base layer to begin drawing polygons for landslide interpretation. This is a compilation of publicly available multibeam bathymetry data published at various resolutions ranging from 2-30 meters. Data sources used are shown on Figure 1 of the report and links to the data are provided therein.

Source_Information:

Source_Citation:

Citation_Information:

Originator:

Seafloor Mapping Lab of California State University Monterey Bay

Publication_Date: 2018
Title: California Margin Geology Series
Geospatial_Data_Presentation_Form: Raster Digital Data Sets
Publication_Information:

Publication_Place: Seaside, CA
Publisher: California State University, Monterey Bay

Online_Linkage: http://seafloor.otterlabs.org/SFMLwebDATA.htm

Type_of_Source_Media: Digital resource
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 2000
Ending_Date: 2018

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: Seafloor Mapping Lab, 2018
Source_Contribution:

High resolution multibeam bathymetry was used as a base layer to begin drawing polygons for landslide interpretation. High resolution multibeam bathymetry data at resolutions ranging from 2 – 10 meters from survey datasets H11875, H11876, H11877, H11878, H11879, H11880, H11881, H11882, H11883, H11891, H11950, H11951, H11952, H11953, and the 2014 Southern California Data Gap Project (Dana Point, San Onofre Blocks 01-03, La Jolla, Mission Beach, Point Loma North, Point Loma South, and Imperial Beach) were used.

Source_Information:

Source_Citation:

Citation_Information:

Originator: MBARI Seafloor Mapping Team
Publication_Date: 2001
Title: Santa Barbara multibeam survey
Geospatial_Data_Presentation_Form: Raster Digital Data Set
Publication_Information:

Publication_Place: online
Publisher: MBARI

Online_Linkage: https://www3.mbari.org/data/mapping/Santa_Barbara_Basin/

Type_of_Source_Media: Digital resource
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1998
Ending_Date: 2001

Source_Currentness_Reference: published 2001

Source_Citation_Abbreviation: MBARI Seafloor Mapping Team, 2001
Source_Contribution:

High resolution multibeam bathymetry was used as a base layer to begin drawing polygons for landslide interpretation.

Source_Information:

Source_Citation:

Citation_Information:

Originator: NOAA
Publication_Date: 2012
Title: U.S. Coastal Relief Model - Southern California vers. 2
Geospatial_Data_Presentation_Form: Raster Digital Data Sets
Publication_Information:

Publication_Place: online
Publisher: NOAA

Online_Linkage: https://doi.org/10.7289/V5V985ZM

Type_of_Source_Media: Digital resource
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19990101
Ending_Date: Present

Source_Currentness_Reference: published 2013-07-08

Source_Citation_Abbreviation: National Geophysical Data Center, 2012
Source_Contribution:

The NCEI 3-arc-second elevation grid (approximately 90-meter resolution) was used as a base layer to begin drawing polygons for landslide interpretation where no high resolution multibeam bathymetry data (listed above) were available.

Process_Step:

Process_Description:

A compilation of existing bathymetry data was used as a base layer to map landslide features. Data from listed sources was downsampled in ESRI ArcMap and merged into a single 30-m grid to create the base layer. In some cases, the source swath data was higher resolution than the 30-m compilation and was used to map landslide features. A list of source swath data is detailed in the Source Used Citations. Where high (<30 m) resolution data was unavailable, the 90-m resolution NOAA Coastal Relief Model was used as the base layer. Using this base layer, landslides, headwall scarps, and areas of mass-wasting were mapped. Mapped landslide bodies were divided into evacuation zones and debris aprons based on negative (i.e., evacuation zones) or positive (i.e., debris aprons) seafloor relief associated with the landslide masses.

Source_Used_Citation_Abbreviation: Dartnell and others, 2015
Source_Used_Citation_Abbreviation: Dartnell and others, 2021
Source_Used_Citation_Abbreviation: Seafloor Mapping Lab, 2018
Source_Used_Citation_Abbreviation: MBARI Seafloor Mapping Team, 2001
Source_Used_Citation_Abbreviation: NOAA National Geophysical Data Center, 2012
Process_Date: 20230202

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 36

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.0001
Longitude_Resolution: 0.0001
Geographic_Coordinate_Units: Decimal degrees

Geodetic_Model:

Horizontal_Datum_Name: D_WGS_1984
Ellipsoid_Name: WGS_1984
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257223563

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: slidezones_offshore_socal_2023
Entity_Type_Definition: polygons representing mapped mass-wasting zones
Entity_Type_Definition_Source: U.S. Geological Survey

Attribute:

Attribute_Label: FID
Attribute_Definition: internal feature number
Attribute_Definition_Source: Esri
Attribute_Domain_Values:

Unrepresentable_Domain:

automatically generated sequential unique whole number identifier

Attribute:

Attribute_Label: Shape
Attribute_Definition: feature geometry
Attribute_Definition_Source: Esri
Attribute_Domain_Values:

Unrepresentable_Domain: feature type

Attribute:

Attribute_Label: name_id
Attribute_Definition: the name of the mass-wasting zone
Attribute_Definition_Source: U.S. Geological Survey and California Geological Survey
Attribute_Domain_Values:

Unrepresentable_Domain:

Mass-wasting zone names are a unique shortform abbreviated name based on mass-wasting zone location. We define prefixes as follows: 30mile is Thirtymile Bank; 40mile is Fortymile Bank; CB is Catalina Basin; CI is Catalina Island; CR is Cortez Ridge; GSC is Gulf of Santa Catalina; PE is Patton Escarpment; SBB is Santa Barbara Basin; SCB is Santa Cruz Basin; SCCR is Santa Cruz-Catalina Ridge; SMB is Santa Monica Basin; SPB is San Pedro Basin. Names are prepended with “zone” and are appended with unique whole number identifiers.

Attribute:

Attribute_Label: location
Attribute_Definition: the geographic location of the mass-wasting zone
Attribute_Definition_Source: U.S. Geological Survey and California Geological Survey
Attribute_Domain_Values:

Unrepresentable_Domain: The geographic location of the mass-wasting zone

Attribute:

Attribute_Label: area_m2
Attribute_Definition: Area of mass-wasting zone in square meters
Attribute_Definition_Source: Esri
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 138488
Range_Domain_Maximum: 1353691751
Attribute_Units_of_Measure: square meters
Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: area_err
Attribute_Definition:

Estimated mass-wasting zone area uncertainty from data resolution and user interpretation, values in square meters. GIS-calculated area was approximated as a circle geometry with radius uncertainty of plus or minus 50 meters and plus or minus 20 meters for areas greater and less than 100,000 square meters, respectively. These values are based on 2 pixels of the likely resolution of bathymetric data used for mapping (25-meter and 10-meter resolutions). The calculated error is the standard deviation of the maximum, minimum, and picked geometries.

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 66116
Range_Domain_Maximum: 6521311
Attribute_Units_of_Measure: square meters
Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: slope_deg
Attribute_Definition:

GIS-calculated mean slope approximation of the mass-wasting zone in degrees from the underlying NCEI Coastal Relief Model gridded slope map

Attribute_Definition_Source: U.S. Geological Survey and California Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 4.7
Range_Domain_Maximum: 25
Attribute_Units_of_Measure: degrees
Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: sed_age
Attribute_Definition:

geologic age of sediment for the majority of the failure area, from literature, "unspecified" if no age data are available. See the sedage_ref attribute and the accompanying ReferencesCited_offshore_socal_2023.pdf file in the Attached Files section (https://www.sciencebase.gov/catalog/item/5d9bc778e4b0366162923190) for a comprehensive list of sources used

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: pre-Late Cretaceous
Enumerated_Domain_Value_Definition: an age older than 99.6 Ma
Enumerated_Domain_Value_Definition_Source: USGS, 2010; Cohen and others, 2023

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Paleocene
Enumerated_Domain_Value_Definition: an age of 55.8-65.5 Ma
Enumerated_Domain_Value_Definition_Source: USGS, 2010; Cohen and others, 2023

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Eocene
Enumerated_Domain_Value_Definition: an age of 55.8-33.9 Ma
Enumerated_Domain_Value_Definition_Source: USGS, 2010; Cohen and others, 2023

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Miocene
Enumerated_Domain_Value_Definition: an age of 23.03-5.33 Ma
Enumerated_Domain_Value_Definition_Source: USGS, 2010; Cohen and others, 2023

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Pliocene
Enumerated_Domain_Value_Definition: an age of 5.33-2.59 Ma
Enumerated_Domain_Value_Definition_Source: USGS, 2010; Cohen and others, 2023

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Quaternary
Enumerated_Domain_Value_Definition: an age of 2.58 Ma-Present
Enumerated_Domain_Value_Definition_Source: USGS, 2010; Cohen and others, 2023

Attribute:

Attribute_Label: sedage_ref
Attribute_Definition:

citation information for the sed_age attribute, "n/a" if no age data are available

Attribute_Definition_Source: U.S. Geological Survey and California Geological Survey
Attribute_Domain_Values:

Unrepresentable_Domain:

Source citations used to characterize the age of the failed sediment in the sed_age attribute. See the accompanying ReferencesCited_offshore_socal_2023.pdf file in the Attached Files section (https://www.sciencebase.gov/catalog/item/5d9bc778e4b0366162923190) for a comprehensive list of sources used.

Overview_Description:

Entity_and_Attribute_Overview:

Polygon shapefile containing outlines and attributes of mass-wasting zones offshore of California.

Entity_and_Attribute_Detail_Citation: U.S. Geological Survey

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey - ScienceBase

Contact_Address:

Address_Type: Mailing and Physical
Address: Denver Federal Center, Building 810, Mail Stop 302
City: Denver
State_or_Province: CO
Postal_Code: 80225

Contact_Voice_Telephone: 1-888-275-8747
Contact_Electronic_Mail_Address: sciencebase@usgs.gov

Resource_Description:

masswastingzones_offshore_socal_2023.zip contains the shapefile and associated files, and is accompanied by a browse image and CSDGM FGDC-compliant metadata.

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: Shapefile
Format_Version_Number: ArcGIS 10.7
Format_Specification: polygon shapefile
Format_Information_Content:

Zip file contains the interpreted polygons shapefile, associated files, a browse image, and the metadata

File_Decompression_Technique:

Winzip, 7-zip, or Winrar are free software that will open .zip files.

Transfer_Size: 2

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://www.sciencebase.gov/catalog/file/get/5ef12a1382ced62aaae18f65

Network_Resource_Name:

https://www.sciencebase.gov/catalog/item/5ef12a1382ced62aaae18f65

Network_Resource_Name: https://doi.org/10.5066/P9IIWTYL

Access_Instructions:

Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to download the zipped file of data and metadata. The second link points to a landing page with metadata and data. The third link points to the landing page for the entire data release.

Fees: None.

Technical_Prerequisites: These data can be viewed with GIS software.

Metadata_Reference_Information:

Metadata_Date: 20230821
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

This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/DataReleases/ScienceBase/DR_P9IIWTYL/masswastingzones_offshore_socal_2023_metadata.html>