Metadata: Identification_Information: Citation: Citation_Information: Originator: Jeffrey W. Beeson Originator: Peter Dartnell Originator: Janet T. Watt Publication_Date: 20250423 Title: Composite bathymetric surface of the northern Cascadia Margin offshore Washington Geospatial_Data_Presentation_Form: GeoTIFF Series_Information: Series_Name: data release Issue_Identification: DOI: 10.5066/P14SLWTD Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, California Publisher: U.S. Geological Survey Other_Citation_Details: Suggested Citation: Beeson, J.W., Dartnell, P., Watt, J.T., 2025, Composite bathymetric surface of the northern Cascadia Margin offshore Washington: U.S. Geological Survey data release, https://doi.org/10.5066/P14SLWTD. Online_Linkage: https://doi.org/10.5066/P14SLWTD Description: Abstract: Composite 30-m resolution bathymetric surface of northern Cascadia Margin offshore Washington. The bathymetric surface is available as a GeoTIFF file. Purpose: To produce a composite 30-m resolution bathymetric surface of the northern Cascadia Margin offshore Washington State. This bathymetric grid is a cooperative project between the U.S. Geological Survey and National Oceanic and Atmospheric Administration (NOAA) Pacific Marine Environmental Laboratory (PMEL) and Oregon State University. The surface was generated to assist research projects studying offshore geohazards, which include mapping faults, submarine landslides, sediment transport pathways, and sea-floor seeps. These data are not intended to be used for navigation. 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=2018-642-FA http://cmgds.marine.usgs.gov/fan_info.php?fan=2021-010-FA http://cmgds.marine.usgs.gov/fan_info.php?fan=2022-605-DD 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: 2006 Ending_Date: 2022 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: -127.042 East_Bounding_Coordinate: -123.379 North_Bounding_Coordinate: 48.534 South_Bounding_Coordinate: 46.195 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:029f0ecb-869b-4bdc-b1c6-a52deaff147e Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: bathymetry Theme_Keyword: bathymetry measurement Theme_Keyword: sea-floor characteristics Theme_Keyword: geospatial datasets Theme_Keyword: marine geophysics Theme_Keyword: multibeam sonar Theme: Theme_Keyword_Thesaurus: Data Categories for Marine Planning Theme_Keyword: Bathymetry and Elevation Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords Theme_Keyword: seabed Theme_Keyword: field observation 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: State of Washington Access_Constraints: No access constraints 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 NOAA Pacific Marine Environmental Laboratory and the U.S. Geological Survey as the originators of the dataset and in products derived from these data. The surface was generated to assist research projects studying offshore geohazards, which include mapping faults, submarine landslides, sediment transport pathways, and sea-floor seeps. The bathymetry grid is not intended to be used for navigation. 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: NorthernCascadia_composite_bathymetry_UTM10_NAD83_QV.jpg Browse_Graphic_File_Description: Preview image of the northern Cascadia Margin composite bathymetric surface Browse_Graphic_File_Type: JPEG Native_Data_Set_Environment: MB Systems and ArcGIS Pro on a Windows 10 computer. Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: No formal attribute accuracy tests were conducted. 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: The composite bathymetric surface was generated from a combination of dedicated multibeam surveys, processed bathymetric surfaces received from other institutions, as well as transit data (ancillary data collected while a ship was underway). The bathymetry data were collected over a span of nearly 16 years using various models of echosounders, GPS systems, position and motion compensation systems, sound velocity profilers, and tide measurements. Some datasets provide metadata and reports describing mapping procedures and data quality, including uncertainty measurements and comparisons with other bathymetry data. The horizontal accuracy of bathymetry data in this data release may be lower than stated in the reports due to further data processing. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: The composite bathymetric surface was generated from a combination of dedicated multibeam surveys, processed bathymetry surfaces received from other institutions, as well as transit data (ancillary data collected while a ship was underway). The bathymetry data were collected over a span of nearly 16 years using various models of echosounders, GPS systems, position and motion compensation systems, sound velocity profilers, and tide measurements. Some datasets provide metadata and reports describing mapping procedures and data quality, including uncertainty measurements and comparisons with other bathymetry data. The vertical accuracy of bathymetry data in this data release may be lower than stated in the reports due to further data processing. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: National Ocean Service (NOS), NOAA Publication_Date: 2025 Title: NOS Hydrographic Survey Collection Geospatial_Data_Presentation_Form: Raster Digital Dataset Publication_Information: Publication_Place: online Publisher: NOAA National Center for Environmental Information (NCEI) Online_Linkage: https://www.ncei.noaa.gov/maps/bathymetry/ Type_of_Source_Media: online database Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 2006 Ending_Date: 2022 Source_Currentness_Reference: ground condition at time data were collected Source_Citation_Abbreviation: NOAA multibeam Source_Contribution: Multibeam data from surveys offshore Washington. For detailed information on the sources used, see the table of data sources in the Support File section of this data release. Source_Information: Source_Citation: Citation_Information: Originator: Global Multi-Resolution Topography Synthesis (GMRT) Publication_Date: 2025 Title: Global Multi-Resolution Topography (GMRT) synthesis data set Geospatial_Data_Presentation_Form: Raster Digital Dataset Publication_Information: Publication_Place: online Publisher: Global Multi-Resolution Topography Synthesis (GMRT) Online_Linkage: https://doi.org/10.1594/IEDA.100001 Type_of_Source_Media: online database Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 2006 Ending_Date: 2022 Source_Currentness_Reference: ground condition at time data were collected Source_Citation_Abbreviation: GMRT bathymetry Source_Contribution: Bathymetric data Process_Step: Process_Description: NOAA PMEL created a composite multibeam bathymetric surface of the northern Cascadia Margin region generated from publicly available data. Source_Used_Citation_Abbreviation: NOAA multibeam Process_Date: 2024 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: NOAA Pacific Marine Environmental Laboratory and Oregon State University Contact_Person: Dr. Jeffrey Beeson Contact_Address: Address_Type: mailing and physical Address: 2115 SE Oregon State University Drive City: Newport State_or_Province: OR Postal_Code: 97365 Contact_Voice_Telephone: NA Contact_Electronic_Mail_Address: jeff.beeson@noaa.gov Process_Step: Process_Description: The USGS received the NOAA PMEL bathymetric surface in geographic coordinates. The USGS projected the original bathymetric surface to UTM, zone 10, NAD83 coordinates at 30-m spatial resolution. Shallower water bathymetry data on the continental shelf were clipped from the surface. Source_Used_Citation_Abbreviation: NOAA multibeam Process_Date: 2024 Process_Step: Process_Description: Multibeam data from four surveys offshore Washington (W00306, W00311, W00353, W00445) were downloaded from NOAA National Center for Environmental Information (https://www.ncei.noaa.gov/maps/bathymetry/) in Bathymetric Attributed Grid (BAG) format. In ArcGIS Pro, surfaces were projected to UTM, zone 10, NAD83 coordinates and resampled to 30-m spatial resolution if needed. Bathymetric data were downloaded from the Global Multi-Resolution Topography Synthesis (GMRT) website (https://www.gmrt.org/). In ArcGIS Pro, all the bathymetric surfaces were merged in the following order: four BAG surveys, NOAA PMEL, GMRT. The composite grid was exported as a GeoTIFF grid in UTM, zone 10, NAD83 coordinates. A spreadsheet (CSV format) of data sources used to generate the surface is included in the Support File section of the data release. The spreadsheet information includes, ship, cruise ID, year, multibeam system, organization, and source URL. Source_Used_Citation_Abbreviation: NOAA multibeam Source_Used_Citation_Abbreviation: GMRT bathymetry Process_Date: 2025 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Grid Cell Row_Count: 8663 Column_Count: 6760 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: 10 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -123.00000 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: 30.0 Ordinate_Resolution: 30.0 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: instantaneous sea level 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: NorthCascadia_composite_bathymetry_UTM10_NAD83.tif Entity_Type_Definition: Raster values represent depth in meters. Entity_Type_Definition_Source: Producer defined Detailed_Description: Entity_Type: Entity_Type_Label: NorthernCascadia_composite_bathymetry_data_sources.xlsc (.csv) Entity_Type_Definition: Table containing attribute information associated with the data set. Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: Ship Attribute_Definition: name of the survey vessel Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: name of the survey vessel Attribute: Attribute_Label: Cruise ID Attribute_Definition: Cruise Identifier Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: unique cruise identification assigned by each institution Attribute: Attribute_Label: Year Attribute_Definition: Year of data collection Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2006 Range_Domain_Maximum: 2023 Attribute: Attribute_Label: Multibeam Attribute_Definition: multibeam system used to collect data Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: type and model of various instrument(s) used to collect the multibeam data on each cruise Attribute: Attribute_Label: Organization Attribute_Definition: Group, Organization, Agency, Program, or Project that collected the data Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Group, Organization, Agency, Program, or Project that collected the data Attribute: Attribute_Label: Source Attribute_Definition: data source URL Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: data source URL Overview_Description: Entity_and_Attribute_Overview: The complete 30-m resolution "NorthCascadia_composite_bathymetry_UTM10_NAD83.tif" grid was originally archived as a TIFF image with the following attributes. >Cell size = 30.0 >Number of rows = 8663 >Number of columns = 6760 > >Data type = floating point > >Boundary >Xmin = 186946 >Xmax = 389714 >Ymin = 5124384 >Ymax = 5384252 > >Statistics >Minimum value = -2787.04 >Maximum value = -111.72 >Mean = -1805.94 >Standard deviation = 748.77 > >Coordinate system description >Projection UTM >Zone 10 >Datum NAD83 >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 - 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: 1-831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Resource_Description: These data are available in GeoTIFF format, including 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: GeoTIFF Format_Version_Number: ArcMap (version 10.3.1) Format_Information_Content: Downloadable zip file contains the TIFF (.tif) and the projection file (.tfw). File_Decompression_Technique: WinZip Transfer_Size: 117 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://doi.org/10.5066/P14SLWTD Access_Instructions: Data can be downloaded using the Network_Resource_Name link and scrolling down to the Location-Elevation Data section. 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 a GeoTIFF file. Metadata_Reference_Information: Metadata_Date: 20250423 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