Metadata: Identification_Information: Citation: Citation_Information: Originator: Peter Dartnell Originator: Guy R. Cochrane Publication_Date: 20160712 Title: High-resolution multibeam bathymetry data collected in 2004 for the northern Channel Islands region, southern California Edition: 1.0 Geospatial_Data_Presentation_Form: ASCIIRaster Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/F7S46Q1J 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/F7S46Q1J Online_Linkage: https://www.sciencebase.gov/catalog/item/5ee65f5d82ce3bd58d82eb7a Larger_Work_Citation: Citation_Information: Originator: Peter Dartnell Originator: Guy R. Cochrane Publication_Date: 2016 Title: High-resolution multibeam bathymetry and backscatter data - northern Channel Islands region, southern California Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: U.S. Geological Survey data release Issue_Identification: DOI:10.5066/F7S46Q1J 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/F7S46Q1J Description: Abstract: This data release presents data for 5-m resolution multibeam-bathymetry data of the northern Channel Islands region, southern California. In 2004 The U.S. Geological Survey, Pacific Coastal and Marine Science Center collected multibeam-bathymetry and acoustic-backscatter data in the northern Channel Islands region, southern California. The region was mapped aboard the R/V Ewing using a Kongsberg Simrad EM-1002 multibeam echosounder. These data were previously published on-line at http://pubs.usgs.gov/of/2005/1153/. In this data release the data have been reprocessed to a finer spatial resolution (5-m versus 15-m) using more modern processing techniques. Due to the large file sizes the entire survey area is provided as two ASCIIRaster files (one for the north portion of the study area and another for the south). Purpose: These data are intended for policy makers, resource managers, science researchers, students, 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: Additional information about the field activity from which these data were derived is available online at: http://cmgds.marineß.usgs.gov/fan_info.php?fan=E104SC Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20040806 Ending_Date: 20040815 Currentness_Reference: ground condition at the time the data was collected Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -119.70 East_Bounding_Coordinate: -119.04 North_Bounding_Coordinate: 34.33 South_Bounding_Coordinate: 33.86 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:5ee65f5d82ce3bd58d82eb7a Theme: Theme_Keyword_Thesaurus: Data Categories for Marine Planning Theme_Keyword: Bathymetry and Elevation 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: oceans Theme_Keyword: imageryBaseMapsEarthCover Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: multibeam sonar Theme_Keyword: Bathymetry Theme_Keyword: sea-floor acoustic reflectivity Theme_Keyword: marine geology Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords Theme_Keyword: marine geology Theme_Keyword: marine geophysics Theme_Keyword: multibeam echo sounder 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: Pacific Ocean Place_Keyword: State of California Place_Keyword: Channel Islands Place_Keyword: Santa Barbara Channel 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 originator(s) 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 Cross_Reference: Citation_Information: Originator: Peter Dartnell Originator: Guy Cochrane Originator: Mary Elaine Dunaway Publication_Date: 2005 Title: Multibeam bathymetry and backscatter data: northeastern Channel Islands region, southern California Geospatial_Data_Presentation_Form: ASCII XYZ Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Open-File Report Online_Linkage: https://pubs.usgs.gov/of/2005/1153/ 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 5 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 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: The multibeam-bathymetry data were collected along a continuous swath perpendicular to the direction of the ship using a Kongsberg Simrad EM1002 multibeam-sonar system. The data were cleaned of bad navigation and depth readings and corrected for tides to mean lower low water datum using a predictive tide model. The depth readings then were gridded into a common grid. The gridded data are converted to ArcInfo GRID format using ArcInfo's ASCIIGRID command. Process_Date: 20041130 Process_Step: Process_Description: The USGS retrieved the raw survey line files from the USGS archives. The line files were processed in Caris HIPS and SIPS software (version 9). The data were cleaned of bad navigation and depth readings and corrected for tides to mean lower low water datum using a predictive tide model. The data were gridded into base surfaces with 5-m spatial resolution using the Swath Angle process. Base surfaces then were exported as ASCIIRaster files and imported into a GIS. 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: Performed minor edits to the metadata to correct typos. No data were changed Process_Date: 20211013 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Susan A. 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 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: -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: 5.0 Ordinate_Resolution: 5.0 Planar_Distance_Units: Meters Geodetic_Model: Horizontal_Datum_Name: WGS84 Ellipsoid_Name: WGS84 Semi-major_Axis: 6378137.00 Denominator_of_Flattening_Ratio: 298.257223563 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: Due to the large file sizes the entire survey area is provided as two ASCIIRaster files (USGS_NChannelIslands_NorthArea_Bathy_5m.zip and USGS_NChannelIslands_SouthArea_Bathy_5m.zip). The complete 5-m resolution bathymetry grid for the northern region were originally archived as an ESRI grid with the following attributes. >Cell size = 5.0 >Number of rows = 5344 >Number of columns = 8206 > >Data type = floating point > >Boundary >Xmin = 251052 >Xmax = 292082 >Ymin = 3774302 >Ymax = 3801022 > >Statistics >Minimum value = -250.31 >Maximum value = -20.95 >Mean = -152.83 >Standard deviation = 69.47 > >Coordinate system description >Projection UTM >Zone 11 >Datum WGS84 >Vertical Datum MLLW >Units meter The complete 5-m resolution bathymetry grid for the southern region were originally archived as an ESRI grid with the following attributes. >Cell size = 5.0 >Number of rows = 4344 >Number of columns = 9630 > >Data type = floating point > >Boundary >Xmin = 262612 >Xmax = 310762 >Ymin = 3752902 >Ymax = 3774622 > >Statistics >Minimum value = -1047.54 >Maximum value = -67.84 >Mean = -465.64 >Standard deviation = 223.47 > >Coordinate system description >Projection UTM >Zone 11 >Datum WGS84 >Vertical Datum MLLW >Units meter Entity_and_Attribute_Detail_Citation: none 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: sciencbase@usgs.gov 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: Raster data format Format_Version_Number: ArcMap (version 10.0, Esri, 2011) Format_Specification: Raster data layer is registered ASCIIRaster in the UTM Zone 11 coordinate system with datum WGS84. Format_Information_Content: The .zip file (USGS_NChannelIslands_NorthArea_Bathy_5m.zip) includes the ASCIIRaster data (.asc, .prj), as well as FGDC-compliant metadata (.xml) for the north part of the study area File_Decompression_Technique: WinZip Transfer_Size: 46 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/5ee65f5d82ce3bd58d82eb7a?name=USGS_NChannelIslands_NorthArea_Bathy_5m.zip Network_Resource_Name: https://www.sciencebase.gov/catalog/item/5ee65f5d82ce3bd58d82eb7a Network_Resource_Name: https://doi.org/10.5066/F7S46Q1J Access_Instructions: Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to download the zipped file of bathymetry data for the north portion of the study area. The second link points to a landing page for all of the bathymetry data (north and south) and the metadata. The third link points to a landing page for the entire data release. Digital_Form: Digital_Transfer_Information: Format_Name: Raster data format Format_Version_Number: ArcMap (version 10.0, Esri, 2011) Format_Specification: Raster data layer is registered ASCIIRaster in the UTM Zone 11 coordinate system with datum WGS84. Format_Information_Content: The .zip file (USGS_NChannelIslands_SouthArea_Bathy_5m.zip) includes the ASCIIRaster data (.asc, .prj), as well as FGDC-compliant metadata (.xml) for the south part of the study area File_Decompression_Technique: WinZip Transfer_Size: 65 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/5ee65f5d82ce3bd58d82eb7a?name=USGS_NChannelIslands_SouthArea_Bathy_5m.zip Network_Resource_Name: https://www.sciencebase.gov/catalog/item/5ee65f5d82ce3bd58d82eb7a Network_Resource_Name: https://doi.org/10.5066/F7S46Q1J Access_Instructions: Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to download the zipped file of bathymetry data for the south portion of the study area. The second link points to a landing page for all of the bathymetry data (north and south) and the metadata. The third link points to a 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 ArcMap ASCIIRaster. 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 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