Merged multibeam bathymetry - northern portion of the Southern California Continental Borderland

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: 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 Kluesner
Originator: Maureen A.L. Walton
Publication_Date: 2017
Title:

Merged multibeam bathymetry - northern portion of the Southern California Continental Borderland

Geospatial_Data_Presentation_Form: TIFF
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/F7DV1H3W

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/F7DV1H3W
Larger_Work_Citation:

Citation_Information:

Originator: Peter Dartnell
Originator: Emily C. Roland
Originator: Nicole A. Raineault
Originator: Christopher M. Castillo
Originator: James E. Conrad
Originator: Renato R. Kane
Originator: Daniel S. Brothers
Originator: Jared W. Kluesner
Originator: Maureen A.L. Walton
Publication_Date: 2017
Title:

Multibeam bathymetry and acoustic-backscatter data collected in 2016 in Catalina Basin, southern California and merged multibeam bathymetry datasets of the northern portion of the Southern California Continental Borderland

Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/F7DV1H3W

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/F7DV1H3W

Description:

Abstract:

This part of the data release includes 25-m resolution merged multibeam-bathymetry data of the northern portion of the Southern California Continental Borderland. The data are presented as a TIFF file.
In February 2016 the University of Washington in cooperation with the U.S. Geological Survey, Pacific Coastal and Marine Science Center (USGS, PCMSC) collected multibeam bathymetry and acoustic backscatter data in Catalina Basin aboard the University of Washington's Research Vessel Thomas G. Thompson. Data were collected using a Kongsberg EM300 multibeam echosounder hull-mounted to the 274-foot R/V Thomas G. Thompson. The USGS, PCMSC processed these data and produced a series of bathymetric surfaces and acoustic backscatter images for scientific research purposes. A 25-m bathymetric surface produced from this work was merged with publically available multibeam bathymetry data, as well as 2015, 2016, and 2017 multibeam bathymetry data collected in the continental borderland region by the Ocean Exploration Trust's Nautilus Exploration Program. The USGS, PCMSC processed the survey line files received from the Nautilus Exploration Program to include in the overall merged 25-m multibeam bathymetry surface of the northern portion of the Southern California Continental Borderland region that is available in this data release. These data can be used to assess the hazards posed by offshore faults, submarine landslides, and tsunamis as well as map sediment transport pathways and sedimentary sinks.

Purpose:

These data are intended for science researchers, students, policy makers, and the general public. These data can be used with geographic information systems or other software to identify bathymetric features. These data are not intended to be used for navigation.

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.
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=2016-616-FA https://cmgds.marine.usgs.gov/fan_info.php?fan=C696SC https://pubs.usgs.gov/of/1998/0475/ https://cmgds.marine.usgs.gov/fan_info.php?fan=C199SC https://pubs.usgs.gov/sim/3324/
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: 1996
Ending_Date: 2017

Currentness_Reference: ground condition at time data were collected.

Status:

Progress: Complete
Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -119.91
East_Bounding_Coordinate: -118.00
North_Bounding_Coordinate: 34.17
South_Bounding_Coordinate: 32.90

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:597a23e9e4b0ec1a488bb211

Theme:

Theme_Keyword_Thesaurus: Global Change Master Directory (GCMD)
Theme_Keyword: Bathymetry
Theme_Keyword: Seafloor Topography

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation
Theme_Keyword: environment
Theme_Keyword: imageryBaseMapsEarthCover

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: Multibeam sonar
Theme_Keyword: Bathymetry
Theme_Keyword: sea-floor acoustic reflectivity
Theme_Keyword: Geology

Theme:

Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords
Theme_Keyword: multibeam echo sounder
Theme_Keyword: seabed

Theme:

Theme_Keyword_Thesaurus: Data Categories for Marine Planning
Theme_Keyword: Bathymetry and Elevation

Theme:

Theme_Keyword_Thesaurus: None
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: CMGP
Theme_Keyword: Pacific Coastal and Marine Science Center
Theme_Keyword: PCMSC

Place:

Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
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 University of Washington, U.S. Geological Survey, Ocean Exploration Trust's Nautilus Exploration Program, California State University Monterey Bay Seafloor Mapping lab, and National Oceanographic and Atmospheric Administration as the originators 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
Country: United States

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

Native_Data_Set_Environment:

Caris HIPS and SIPS (ver. 9.0) and ArcMap (ver. 10.3.1) on a Windows 7 computer.

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report: Not applicable for raster data.

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. Users are advised to read the rest of the metadata record carefully for additional details.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Unknown. The merged bathymetry map is a composite of many different surveys using different multibeam echosounders on different survey vessels and downloaded in different formats. For some raw survey line files, it was assumed that the vessel lever arm offsets and sound velocity profile data were applied in the original survey line files. There are also uncertainties owing to water depth and total propagated uncertainties of the mapping systems, which include sonar system, position and motion compensation system, and navigation, as well as data processing that includes sounding cleaning, gridding, and datum transformations.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

Lineage:

Process_Step:

Process_Description:

The USGS, PCMSC downloaded Simrad EM3000 multibeam echosounder survey line files for cruise MCD0212 (source organization: U.S. Navy) from the National Centers for Environmental Information, (http://ngdc.noaa.gov/mgg/bathymetry/relief.html. The line files were imported into MB-Systems software. XYZ data (x-coordinate, y-coordinate, depth) were extracted from all survey line files into a single XYZ file using the mblist command. The XYZ file was imported into the Fledermaus software package where obvious erroneous soundings were removed. The cleaned data were gridded into a 25-m surface and then exported as an ASCIIRaster file, imported into a Geographic Information System (ESRI, ArcMap), and converted to a grid. The grid was projected horizontally to the North American Datum of 1983 (NAD83, 2011) using the ESRI "WGS_1984_(ITRF00)_To_NAD_1983_(2011)" function in ArcTools.

Process_Date: 2015

Process_Step:

Process_Description:

The USGS, PCMSC received Kongsberg EM300 multibeam echosounder survey line files from the University of Washington. The line files were imported into Caris HIPS and SIPS (ver. 9.0) software. The survey line files all had time stamps of July 1996 dates, not February 2016 dates. Once all Caris software references were changed to the 1996 dates the lines imported correctly. It was assumed that vessel lever arm offsets and water column sound velocity corrections were applied in the original line files. Verified 6-minute-interval MLLW water levels were downloaded for the harmonic Los Angeles tide station 9410660. The water levels were converted to the subordinate Avalon tide station by adding 8 minutes to the times and 0.29 m to the water levels (https://tidesandcurrents.noaa.gov/noaatidepredictions.html?id=9410079&legacy=1). The water levels were applied to the data and the bathymetry soundings were cleaned of obvious bad soundings and manual refraction corrections were applied to some lines. The data were gridded into a 25-m base surface using the Swath Angle method. The surface was exported to an ASCIIRaster file in UTM-11 coordinates referenced to WGS84, mean lower low water, imported into a Geographic Information System (ESRI, ArcMap), and converted to a grid. The grid was projected horizontally to the North American Datum of 1983 (NAD83, 2011) using the ESRI "WGS_1984_(ITRF00)_To_NAD_1983_(2011)" function in ArcTools.

Process_Date: 2016

Process_Step:

Process_Description:

The USGS, PCMSC downloaded processed XYZ data (x-coordinate, y-coordinate, depth) from Simrad EM302 multibeam echosounder survey line files for cruise EX1101 (chief scientist: Elizabeth Lobecker) from the National Centers for Environmental Information, (http://ngdc.noaa.gov/mgg/bathymetry/relief.html. The XYZ data were imported into the Fledermaus software package and converted to a grid at 25-m spatial resolution. The grid was exported as an ASCIIRaster file, imported into a Geographic Information System (ESRI, ArcMap), and converted to a grid. The grid was projected horizontally to the North American Datum of 1983 (NAD83, 2011) using the ESRI "WGS_1984_(ITRF00)_To_NAD_1983_(2011)" function in ArcTools.

Process_Date: 2016

Process_Step:

Process_Description:

The USGS, PCMSC received 2015, 2016, and 2017 Kongsberg EM300 multibeam echosounder survey line files from the Ocean Exploration Trust's Nautilus Exploration Program (NA066, NA067, NA074, NA078, NA079, NA080, and NA083). The line files were imported into Caris HIPS and SIPS (ver. 9.0) software. It was assumed that vessel lever arm offsets and water column sound velocity corrections were applied in the original line files. Bathymetric soundings were cleaned of obvious bad soundings and manual refraction corrections were applied to some lines. The data were gridded into 25-m base surfaces using the Swath Angle method. The surfaces were exported to ASCIIRaster files in UTM-11 coordinates referenced to WGS84, mean lower low water, imported into a Geographic Information System (ESRI, ArcMap), and converted to grids. The grids were projected horizontally to the North American Datum of 1983 (NAD83, 2011) using the ESRI "WGS_1984_(ITRF00)_To_NAD_1983_(2011)" function in ArcTools.

Process_Date: 2017

Process_Step:

Process_Description:

The USGS, PCMSC downloaded Kongsberg EM122 multibeam echosounder survey line files for cruise MV1010 (chief scientist: Monica Kohler) from the National Centers for Environmental Information, (http://ngdc.noaa.gov/mgg/bathymetry/relief.html. The line files were imported into Caris HIPS and SIPS (ver. 9.0) software. It was assumed that vessel lever arm offsets and water column sound velocity corrections were applied in the original line files. Bathymetric soundings were cleaned of obvious bad soundings and manual refraction corrections were applied to some lines. The data were gridded into a 25-m base surface using the Swath Angle method. The surface was exported to an ASCIIRaster file in UTM-11 coordinates referenced to WGS84, mean lower low water, imported into a Geographic Information System (ESRI, ArcMap), and converted to a grid. The grid was projected horizontally to the North American Datum of 1983 (NAD83, 2011) using the ESRI "WGS_1984_(ITRF00)_To_NAD_1983_(2011)" function in ArcTools.

Process_Date: 2017

Process_Step:

Process_Description:

Publically available multibeam bathymetry data in GIS compatible formats were downloaded from various sources (see below) and imported into a GIS (ESRI, Arcmap). All higher-resolution data were down-sampled to 25-m spatial resolution. All needed datasets were projected horizontally to the North American Datum of 1983 (NAD83, 2011) using the ESRI "WGS_1984_(ITRF00)_To_NAD_1983_(2011)" function in ArcTools. The resulting datasets were merged with the 2016 UW-USGS 25-m bathymetry data (this data release), the EX1101, MV1010, MCD0212 bathymetry data, and the 2015-2017 Nautilus Exploration Program bathymetry data using the ESRI ArcTools "mosaic to new raster" tool resulting in one overall merged 25-m resolution bathymetry surface of the northeast inner continental borderland. Publically available bathymetry data sources: USGS Surveys: Los Angeles Margin (http://pubs.usgs.gov/of/2002/0162/); Eastern Santa Barbara Channel (http://pubs.usgs.gov/of/2005/1153); Scripps Institution of Oceanography and processed by the U.S. Geological Survey, Gulf of Santa Catalina (https://pubs.usgs.gov/sim/3324/); California State University, Monterey Bay Seafloor Mapping Lab, Santa Catalina Island, Santa Barbara Island, San Nicolas Island, Santa Barbara Channel Blocks A-C, and H11891 (http://seafloor.otterlabs.org/)

Process_Date: 2017

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

Process_Step:

Process_Description:

Edited metadata to perform minor edits, correct typos, and bring the file up to PCMSC metadata standards. No data were changed.

Process_Date: 20211013
Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey
Contact_Person: Susan Cochran

Contact_Position: Geologist
Contact_Address:

Address_Type: Mailing and Physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060

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

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:

Raster_Object_Type: Grid Cell
Row_Count: 5507
Column_Count: 7199
Vertical_Count: 1

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: -117.00000
Latitude_of_Projection_Origin: 0.00000
False_Easting: 500000.0
False_Northing: 0.00

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:

Abscissa_Resolution: 25.0
Ordinate_Resolution: 25.0

Planar_Distance_Units: Meters

Geodetic_Model:

Horizontal_Datum_Name: NAD83
Ellipsoid_Name: GRS80
Semi-major_Axis: 6378137.00
Denominator_of_Flattening_Ratio: 298.257223563

Vertical_Coordinate_System_Definition:

Altitude_System_Definition:

Altitude_Datum_Name: Mean Lower Low Water
Altitude_Resolution: 0.1
Altitude_Distance_Units: meters
Altitude_Encoding_Method:

Explicit elevation coordinate included with horizontal coordinates

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: value
Entity_Type_Definition: depth in meters relative to MLLW
Entity_Type_Definition_Source: Producer defined

Overview_Description:

Entity_and_Attribute_Overview:

The complete 25-m resolution northeastern inner continental borderland bathymetry grid was originally archived as a TIFF image with the following attributes.

Cell size = 25.0
Number of rows = 5507
Number of columns = 7199

Data type = floating point

Boundary
Xmin = 228106.13
Xmax = 408081.13
Ymin = 3643569.45
Ymax = 3781244.45

Statistics
Minimum value = -1943.26
Maximum value = -0.02
Mean = -814.09
Standard deviation = 492.71

Coordinate system description
Projection  UTM
Zone  11
Datum  NAD83
Vertical Reference MLLW
Units  meter

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:

These data are available in TIFF format (merged_bathymetry_north_borderland_25m_UTM11_NAD83_MLLW.tif) contained in a single zip file (merged_bathymetry_north_borderland_25m_UTM11_NAD83_MLLW.zip), which includes a tif world file (.tfw) and CSDGM FGDC-compliant metadata. A shaded-relief version (merged_shadedrelief_north_borderland_25m_UTM11_NAD83.tif) is contained in a second zip file (merged_shadedrelief_north_borderland_25M_UTM11_NAD83.zip), which also includes a tif world file (.tfw) 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: TIFF
Format_Version_Number: ArcMap (version 10.3.1)
Format_Information_Content:

The .zip files contains the TIFF (.tif), the world file (.tfw), and the XML (.xml) version of the metadata.

File_Decompression_Technique: WinZip
Transfer_Size: 66

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://www.sciencebase.gov/catalog/file/get/597a23e9e4b0ec1a488bb211?name=merged_bathymetry_north_borderland_25m_UTM11_NAD83_MLLW.zip

Network_Resource_Name:

https://www.sciencebase.gov/catalog/item/597a23e9e4b0ec1a488bb211

Network_Resource_Name: https://doi.org/10.5066/F7DV1H3W

Access_Instructions:

Data can be downloaded using the Network Resource Name links. The first link is a direct link to download a zipped file with the merged bathymetry data. The second link goes to a page from which the merged bathymetry data, a shaded-relief version of the merged bathymetry data, metadata, and browse image may be downloaded. The third link is to the landing page for the entire data release.

Digital_Form:

Digital_Transfer_Information:

Format_Name: TIFF
Format_Version_Number: ArcMap (version 10.3.1)
Format_Information_Content:

The .zip files contains the TIFF (.tif), the world file (.tfw), and the XML (.xml) version of the metadata.

File_Decompression_Technique: WinZip
Transfer_Size: 12

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://www.sciencebase.gov/catalog/file/get/597a23e9e4b0ec1a488bb211?name=merged_shadedrelief_north_borderland_25m_UTM11_NAD83.zip

Network_Resource_Name:

https://www.sciencebase.gov/catalog/item/597a23e9e4b0ec1a488bb211

Network_Resource_Name: https://doi.org/10.5066/F7DV1H3W

Access_Instructions:

Data can be downloaded using the Network Resource Name links. The first link is a direct link to download a zipped file with the shaded-relief version of the merged bathymetry data. The second link goes to a page from which the shaded-relief version of the bathymetry data, the original bathymetry data, metadata, and browse image may be downloaded. The third link is to the landing page for the entire data release.

Fees: None.

Technical_Prerequisites:

The downloadable data file has been compressed with the "zip" command and can be unzipped with Winzip (or other tool) on Windows systems. To utilize these data, the user must have software capable of uncompressing the WinZip file and importing and viewing an Esri ASCIIRaster file.

Metadata_Reference_Information:

Metadata_Date: 20211013
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
Country: United States

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_F7DV1H3W/merged_bathymetry_north_borderland_25m_metadata.html>