Metadata: Identification_Information: Citation: Citation_Information: Originator: Peter Dartnell Originator: Emily C. Roland Originator: Daniel S. Brothers Originator: James E. Conrad Originator: Jared Kluesner Originator: Maureen A.L. Walton Publication_Date: 2017 Title: Merged multibeam bathymetry--Catalina Basin and northern Gulf of Santa Catalina, southern California 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 10-m resolution merged multibeam-bathymetry data of Catalina Basin and northern Gulf of Santa Catalina. 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 10-m bathymetric surface produced from this work (available in this report) was merged with re-processed 10-m resolution multibeam bathymetry data collected in the Gulf of Santa Catalina in 2013 by Scripps Institution of Oceanography and processed by USGS, PCMSC (available at, https://pubs.usgs.gov/sim/3324/). 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://cmgds.marine.usgs.gov/fan_info.php?fan=A398SC https://cmgds.marine.usgs.gov/fan_info.php?fan=C199SC https://cmgds.marine.usgs.gov/fan_info.php?fan=E104SC 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: 2013 Ending_Date: 2016 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: -119.02 East_Bounding_Coordinate: -117.95 North_Bounding_Coordinate: 33.63 South_Bounding_Coordinate: 32.90 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:599c6354e4b0b589267ed6f4 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 Place_Keyword: Santa Catalina Island Place_Keyword: Santa Barbara Island Place_Keyword: San Clemente Island Place_Keyword: San Nicolas Island 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, and Scripps Institution of Oceanography 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: Estimated to be no less than 10 m, 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: Estimated to be no less than 5% water depth, 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. Lineage: Process_Step: Process_Description: The U.S. Geological Survey (USGS), Pacific Coastal and Marine Science Center (PCMSC) received Kongsberg EM300 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 10-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 imported Scripps Institution of Oceanography multibeam echosounder survey lines files collected in 2013 in the Gulf of Santa Catalina into Caris HIPS and SIPS (version 9). 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 northern region of the data covering the San Gabriel submarine canyon was gridded into a 10-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. This bathymetric surface was merged with the 2016 Catalina Basin bathymetry data using the mosaic to new raster function in ESRI ArcTools. Process_Date: 2016 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: 7913 Column_Count: 9937 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: 10.0 Ordinate_Resolution: 10.0 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 10-m resolution merged Catalina Basin, northern Gulf of Santa Catalina bathymetry grid was originally archived as a TIFF image with the following attributes. >Cell size = 10.0 >Number of rows = 7913 >Number of columns = 9937 > >Data type = floating point > >Boundary >Xmin = 312096.13 >Xmax = 411466.13 >Ymin = 3643204.45 >Ymax = 3722334.45 > >Statistics >Minimum value = -1336.01 >Maximum value = -4.48 >Mean = -933.51 >Standard deviation = 293.11 > >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_bathy_cat_basin_n_gosc_10m_UTM11_NAD83_MLLW.tif) contained in a single zip file (merged_bathy_cat_basin_n_gosc_10m_UTM11_NAD83_MLLW.zip), which includes a tif world file (.tfw) and CSDGM FGDC-compliant metadata. A shaded-relief version (merged_sr_cat_basin_n_gosc_10m_UTM11_NAD83.tif) is contained in a second zip file (merged_sr_cat_basin_n_gosc_10m_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: 111 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/599c6354e4b0b589267ed6f4?name=merged_bathy_cat_basin_n_gosc_10m_UTM11_NAD83_MLLW.zip Network_Resource_Name: https://www.sciencebase.gov/catalog/item/599c6354e4b0b589267ed6f4 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: 25 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/599c6354e4b0b589267ed6f4?name=merged_sr_cat_basin_n_gosc_10m_UTM11_NAD83.zip Network_Resource_Name: https://www.sciencebase.gov/catalog/item/599c6354e4b0b589267ed6f4 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