Composite multibeam bathymetry surface of the central Cascadia Margin offshore Oregon

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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: Janet T. Watt
Originator: Jenna C. Hill
Originator: James E. Conrad
Publication_Date: 20231130
Title:

Composite multibeam bathymetry surface of the central Cascadia Margin offshore Oregon

Geospatial_Data_Presentation_Form: GeoTIFF
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9PERGFK

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/P9PERGFK
Larger_Work_Citation:

Citation_Information:

Originator: Peter Dartnell
Originator: Janet T. Watt
Originator: Jenna C. Hill
Originator: James E. Conrad
Publication_Date: 2023
Title:

Composite multibeam bathymetry surface and data sources of the central Cascadia Margin offshore Oregon

Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9PERGFK

Publication_Information:

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

Other_Citation_Details:

Suggested Citation: Dartnell, P., Watt, J.T., Hill, J.C., and Conrad, J.E., 2023, Composite multibeam bathymetry surface and data sources of the central Cascadia Margin offshore Oregon: U.S. Geological Survey data release, https://doi.org/10.5066/P9PERGFK.

Online_Linkage: https://doi.org/10.5066/P9PERGFK

Description:

Abstract:

Data from various sources, including 2018 and 2019 multibeam bathymetry data collected by the National Oceanic and Atmospheric Administration (NOAA) and the U.S. Geological Survey (USGS) were combined to create a composite 30-m resolution multibeam bathymetry surface of central Cascadia Margin offshore Oregon. The data are available as a geoTIFF file.

Purpose:

In 2018 and 2019 the NOAA ships Rainier and Fairweather collected multibeam bathymetry data in 4 areas along the central Cascadia Margin offshore Oregon as part of a cooperative project between the U.S. Geological Survey, Pacific Coastal and Marine Science Center and NOAA. These regions were combined with other publicly available multibeam bathymetry data. The surface was generated to assist research projects studying offshore geohazards including mapping faults, submarine landslides, sediment transport pathways, and seafloor seeps. These data are not intended to be used for navigation.

Supplemental_Information:

Additional information about the USGS field activities from which some of these data were derived is available online at:
https://cmgds.marine.usgs.gov/fan_info.php?fan=2018-642-FA https://cmgds.marine.usgs.gov/fan_info.php?fan=2019-636-FA
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: 2021

Currentness_Reference: ground condition at time data were collected.

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -126.156
East_Bounding_Coordinate: -124.093
North_Bounding_Coordinate: 46.607
South_Bounding_Coordinate: 43.408

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:39d6085b-9d70-4a7d-9523-8eba44bde4ae

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 Oregon
Place_Keyword: State of Washington

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 originators of the dataset and in products derived from these data. Portions of the map used data provided by the Ocean Exploration Trust’s Nautilus Exploration Program, Cruises NA072, NA080, NA082, NA088, NA095, NA122, NA128, NA130. The surface was generated to assist research projects studying offshore geohazards including mapping faults, submarine landslides, sediment transport pathways, and seafloor 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: CentralCascadia_composite_bathymetry_UTM10_NAD83_QV.jpg
Browse_Graphic_File_Description:

Quick view image of the central Cascadia Margin composite multibeam bathymetry surface

Browse_Graphic_File_Type: JPEG

Native_Data_Set_Environment:

Caris HIPS and SIPS (ver. 11) and ArcMap (ver. 10.3.1) on a Windows 10 computer.

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

The attribute table in the bathymetry source shapefile (CentralCascadia_composite_bathymetry_UTM10_NAD83_data_sources.shp) included in this data release provides mean differences and standard deviations calculated between each dataset and an adjacent, overlapping dataset. In general, there is good agreement in depth values between adjacent datasets. Also, the mean difference between the 30-m composite bathymetry surface and the publicly available Global Multi-Resolution Topography Data Synthesis (https://www.gmrt.org/) bathymetry surface is 2.09m

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 multibeam bathymetry 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 23 years using a variety of models of multibeam echosounders, GPS systems, position and motion compensation systems, sound velocity profilers, and tide measurements. The attribute table in the bathymetry source shapefile (CentralCascadia_composite_bathymetry_UTM10_NAD83_data_sources.shp) included in this data release provides links to the survey page for each dataset. Some of the datasets provide metadata and reports that describe 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 processing of the data.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

The composite multibeam bathymetry 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 23 years using a variety of models of multibeam echosounders, GPS systems, position and motion compensation systems, sound velocity profilers, and tide measurements. The attribute table in the bathymetry source shapefile (CentralCascadia_composite_bathymetry_UTM10_NAD83_data_sources.shp) included in this data release provides links to the survey page for each dataset. Some of the datasets provide metadata and reports that describe 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 processing of the data.

Lineage:

Process_Step:

Process_Description:

The Ocean Exploration Trust's, Nautilus Exploration Program collected multibeam echosounder data along the central Cascadia Margin between 2016 and 2022 (OET survey ID's NA072, NA080, NA082, NA088, NA095, NA122, NA128, NA130). The U.S. Geological Survey Pacific Coastal and Marine Science Center requested and received both raw line files and processed grids as well as processed raw line files available from NOAA, National Centers for Environmental Information, https://ngdc.noaa.gov/mgg/bathymetry/multibeam.html). Raw survey line files were imported and processed in Caris HIPS and SIPS software (version 11). The data were gridded into 30-m surfaces and exported as geoTIFF's or ASCIIRaster files and imported into ArcMap.

Process_Date: 2022

Process_Step:

Process_Description:

Publicly available multibeam echosounder data available from NOAA, National Centers for Environmental Information were downloaded from https://ngdc.noaa.gov/mgg/bathymetry/multibeam.html. Survey IDs include TN149, TN173, TN265, KM1812, FK180731, FK180824, FK190612, RR1807, SKQ201607S, MGL2104, MGL1216, AT26-16, AT26-17, TN312. The raw survey and transit line files were imported and processed in Caris HIPS and SIPS software (version 11). The data were gridded into 30-m surfaces and exported as geoTIFF or ASCIIRaster files and imported into ArcMAP.

Process_Date: 2022

Process_Step:

Process_Description:

Processed multibeam bathymetry grids from Monterey Bay Aquarium Research Institute (MBARI) were downloaded as ASCIIRaster files from http://www3.mbari.org/data/mapping/NorCal_Oregon_Margin/oregon_a.htm(OregonMarginB-I.asc). The bathymetry data were imported into ArcMap and projected from geographic coordinates to UTM, zone 10, WGS84 coordinates. The UTM grid was reprojected to UTM, zone 10, NAD83 coordinates and resampled to 30-m resolution.

Process_Date: 2021

Process_Step:

Process_Description:

Accessed processed multibeam bathymetry data collected by the USGS during field activity 2014-607-FA. Cochrane, G.R., Dartnell, P., Hemery, L.G., and Hatcher, G., 2017, Data release for USGS field activity 2014-607-FA, Oregon OCS seafloor mapping: selected lease blocks relevant to renewable energy (ver. 2.0, July 2017), U.S. Geological Survey data release, https://doi.org/10.5066/F7V40S8V

Process_Date: 2021

Process_Step:

Process_Description:

In 2018 and 2019 the NOAA ships Rainier and Fairweather mapped four regions along the central Cascadia Margin (NOAA survey IDs H13119, H13137, H13118, W00474) using Kongsberg EM-710 multibeam echosounders. These bathymetry surfaces are available from NOAA, National Centers for Environmental Information and were downloaded from https://ngdc.noaa.gov/mgg/bathymetry/multibeam.html as BAG files. The BAG files were imported into Caris HIPS and SIPS, version 11 and converted to LAS files. The files were imported into ArcMap, version 10.8.1 and converted to grids.

Process_Date: 2022

Process_Step:

Process_Description:

If needed, the previously described bathymetry grids were projected to a common horizontal datum (NAD83) using the "Project Raster" tool in ArcToolbox. Also, if needed, the grids were downsampled to 30-m spatial resolution using the "Resample" tool in ArcMap using the bilinear resampling technique. The grids were then merged together using the "Mosaic to New Raster" tool in ArcMap using the "first" mosaic operator. Priority was given to recent dedicated surveys, then older dedicated surveys followed by cleaner transit data and then noisier transit data. The merged grid was exported as a geoTIFF file.

Process_Date: 2023

Process_Step:

Process_Description:

Publicly available Global Multi-Resolution Topography Data Synthesis surface was downloaded from https://www.gmrt.org/. The surface was projected to UTM zone 10, NAD83 coordinates and re-sampled to 30-m resolution. This surface was merged with the composite multibeam bathymetry surface with priority given to the multibeam surface to fill small data gaps not covered by the composite multibeam bathymetry surface. The merged grid was exported as a geoTIFF file.

Process_Date: 2023

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:

Raster_Object_Type: Grid Cell
Row_Count: 10743
Column_Count: 6062
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 sealevel
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: Raster values represent depth in meters.
Entity_Type_Definition_Source: Producer defined

Overview_Description:

Entity_and_Attribute_Overview:

The complete 30-m resolution "CentralCascadia_composite_bathymetry_UTM10_NAD83.tif" grid was originally archived as a TIFF image with the following attributes.

Cell size = 30.0
Number of rows = 10743
Number of columns = 6062

Data type = floating point

Boundary
Xmin = 258579
Xmax = 440439
Ymin = 4807775
Ymax = 5130065

Statistics
Minimum value = -3863.3
Maximum value = -20.8
Mean = -1463.3
Standard deviation = 893.5

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: 86.1

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: https://doi.org/10.5066/P9PERGFK

Access_Instructions:

Data can be downloaded using the Network_Resource_Name link and scrolling down to the Sonar 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: 20231130
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/CMGDS_DR_tool/DR_P9PERGFK/CentralCascadia_composite_bathymetry_UTM10_NAD83_metadata.html>