Metadata: Identification_Information: Citation: Citation_Information: Originator: Rikk Kvitek Originator: Guy R. Cochrane Publication_Date: 20240209 Title: Bathymetry from multibeam echosounder data collected offshore of Eureka, California Geospatial_Data_Presentation_Form: GeoTIFF Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9EC35PF 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/P9EC35PF Larger_Work_Citation: Citation_Information: Originator: Guy R. Cochrane Publication_Date: 2024 Title: Bathymetry, backscatter intensity, seismic reflection, and benthic habitat offshore of Eureka, California Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9EC35PF Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA Publisher: U.S. Geological Survey Other_Citation_Details: Suggested Citation: Cochrane, G.R., 2024, Bathymetry, backscatter intensity, seismic reflection, and benthic habitat offshore of Eureka, California: U.S. Geological Survey data release, https://doi.org/10.5066/P9EC35PF. Online_Linkage: https://doi.org/10.5066/P9EC35PF Description: Abstract: This 2-m-resolution bathymetry data for the Offshore of Eureka, California, map area is part of USGS Data Series 781 (Golden and Cochrane, 2019). Bathymetry data were collected by Fugro Pelagos in 2007 using a combination of 400-kHz Reson 7125, 240-kHz Reson 8101, and 100-kHz Reson 8111 multibeam echosounder systems. The data were processed by the California State University Monterey Bay Seafloor Mapping Lab. The bathymetry data are available as a georeferenced TIFF image. Purpose: The surveys were conducted to map surficial geology and benthic habitat as part of the USGS California Seafloor Mapping Program (CSMP), a collaboration with California State University Monterey Bay (CSUMB) and the National Oceanic and Atmospheric Administration (NOAA). These data are intended to provide regional bathymetric information in California State waters for offshore resource and ecosystem management. These data are also intended for science researchers, students, policy makers, and the general public. These data can be used with geographic information systems or other software to help identify geomorphologic features and surficial lithology. 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. 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: Single_Date/Time: Calendar_Date: 2007 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: -124.367691 East_Bounding_Coordinate: -124.149 North_Bounding_Coordinate: 40.849276 South_Bounding_Coordinate: 40.6878 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:f4485df7-8214-4034-99c0-4c4ddb5dbe3a Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme_Keyword: elevation Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: sea-floor characteristics Theme_Keyword: bathymetry Theme_Keyword: bathymetry measurement Theme_Keyword: geospatial datasets Theme_Keyword: marine geophysics Theme_Keyword: multibeam sonar Theme_Keyword: image mosaics 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 California Place_Keyword: Eureka Place_Keyword: Humboldt County 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 and the California State University Monterey Bay Seafloor Mapping Lab 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 Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: Bathymetry_OffshoreEureka.jpg Browse_Graphic_File_Description: Preview image of bathymetry offshore of Eureka Browse_Graphic_File_Type: JPG Data_Set_Credit: Data acquisition was a joint effort between the U.S. Geological Survey, California State University Monterey Bay, and Humboldt State University. The authors acknowledge the crew of Humboldt State University’s R/V Coral Sea and all those involved in in survey planning and execution. Funding was provided by the California Ocean Protection Council Cochrane, G.R., 2024, Bathymetry, backscatter intensity, seismic reflection, and benthic habitat offshore of Eureka, California, California: U.S. Geological Survey data release, https://doi.org/10.5066/P9EC35PF Native_Data_Set_Environment: Caris HIPS, ArcGIS (ver. 10.8.2), Windows 10. Cross_Reference: Citation_Information: Originator: Nadine Golden Originator: Guy R. Cochrane Publication_Date: 2019 Title: California State Waters Map Series Data Catalog Geospatial_Data_Presentation_Form: database Series_Information: Series_Name: Data Series Issue_Identification: DS 781 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: Golden N.E. and Cochrane, G.R., compiler, 2019, California State Waters Map Series Data Catalog, https://doi.org/10.3133/ds781 Online_Linkage: https://doi.org/10.3133/ds781 Cross_Reference: Citation_Information: Originator: California State University, Monterey Bay, Seafloor Mapping Lab Publication_Date: 2016 Title: Northern California 2007 CSMP surveys: California State University, Monterey Bay, Seafloor Mapping Lab Data Library Other_Citation_Details: California State University, Monterey Bay, Seafloor Mapping Lab, 2016, Southern California 2008 CSMP surveys: California State University, Monterey Bay, Seafloor Mapping Lab Data Library Online_Linkage: http://seafloor.otterlabs.org/SFMLwebDATA_SURVEYMAP.htm 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 area mapped with MBES data. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The POS MV position and motion compensation system has a horizontal positional accuracy of about 0.5 m with DGPS corrections and roll and pitch accuracies of about 0.02 degrees (http://www.measutronics.com/wp-content/uploads/2011/01/posmv320_specifications.pdf). Accuracies of final products may be lower due 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 20 cm, 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: Multibeam echosounder (MBES) data were collected by Fugro Pelagos in 2008 using a combination of 400-kHz Reson 7125, 240-kHz Reson 8101, and 100-kHz Reson 8111 multibeam echosounder systems. An Applanix POS-MV (Position and Orientation System for Marine Vessels) was used to accurately position the vessels during data collection, and it also accounted for vessel motion such as heave, pitch, and roll, with navigational input from GPS receivers. Smoothed Best Estimated Trajectory (SBET) files were postprocessed from logged POS-MV files. Sound-velocity profiles were collected with an Applied Microsystems (AM) SVPlus sound velocimeter. Soundings were corrected for vessel motion using the Applanix POS-MV data, for variations in water-column sound velocity using the AM SVPlus data, and for variations in water height (tides) and heave using the postprocessed SBET data (California State University, Monterey Bay, Seafloor Mapping Lab, 2016). The raw bathymetry data were processed into mosaics using Caris HIPS. The bathymetry mosaics were then exported as two georeferenced TIFF images, a 2-meter resolution image for depths less than 80 meters and a 5-meter resolution image for deeper areas. Process_Date: 2016 Process_Step: Process_Description: The 2-m-resolution bathymetry images were mosaiced and clipped into a single geotiff mosaic for the study area by the USGS using ArcGIS 10. Process_Date: 2023 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Grid Cell Row_Count: 9095 Column_Count: 9100 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: 10.0 Ordinate_Resolution: 10.0 Planar_Distance_Units: Meters Geodetic_Model: Horizontal_Datum_Name: D_WGS_1984 Ellipsoid_Name: WGS_844 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: value Entity_Type_Definition: Depth as a digital value Entity_Type_Definition_Source: Producer defined Overview_Description: Entity_and_Attribute_Overview: The complete 2-m resolution Offshore of Eureka bathymetry raster has a minimum (deepest depth) value of -49.54 meters and a maximum (shallowest depth) value of -4.33 meters. 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: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Resource_Description: These data are available in GeoTIFF format (Bathymetry_OffshoreEureka.tif), along with 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 10.8.2) Format_Information_Content: Downloadable zip file contains the GeoTIFF (.tif), the projection file (.tfw), and FGDC compliant metadata. File_Decompression_Technique: Windows 10 Zip Transfer_Size: 40.7 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://doi.org/10.5066/P9EC35PF Network_Resource_Name: https://doi.org/10.3133/ds781 Access_Instructions: The bathymetry data can be downloaded by going to the first Network_Resource_Name link, then scrolling down to the Multibeam Data section. The second link points to a landing page for the entire California State Waters Map Series Data Catalog. Fees: None Technical_Prerequisites: The downloadable data file has been compressed with the Windows 10 "zip" command and can be unzipped using Windows File Explorer or with Winzip (or other tools). To utilize these data, the user must have software capable importing and viewing a GeoTIFF file. Metadata_Reference_Information: Metadata_Date: 20240213 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