Metadata: Identification_Information: Citation: Citation_Information: Originator: Edward M. Sweeney Publication_Date: 2004 Title: Digital Sidescan-Sonar Mosaic collected within the Gulf of the Farallones, National Marine Sanctuary (FARALLONES.TIF, UTM 10, WGS84) Edition: 1.0 Geospatial_Data_Presentation_Form: raster digital data Series_Information: Series_Name: Open-File Report Issue_Identification: 2004-1082 Publication_Information: Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: https://doi.org/10.3133/ofr20041082 Online_Linkage: https://pubs.usgs.gov/of/2004/1082/html/META.htm Online_Linkage: https://pubs.usgs.gov/of/2004/1082/arcgis/mosaic/farallones_tiff.zip Larger_Work_Citation: Citation_Information: Originator: Edward M. Sweeney Originator: William W. Danforth Originator: Herman A. Karl Originator: Thomas F. O'Brien Originator: William C. Schwab Publication_Date: 2004 Title: The Gulf of Farallones: Sidescan-Sonar Imagery Edition: 1.0 Series_Information: Series_Name: Open-File Report Issue_Identification: 2004-1082 Publication_Information: Publication_Place: Woods Hole Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: https://doi.org/10.3133/ofr20041082 Online_Linkage: https://pubs.usgs.gov/of/2004/1082/ Description: Abstract: In 1989, the U.S. Geological Survey (USGS) began a major geologic and oceanographic investigation of the Gulf of the Farallones continental shelf system, designed to evaluate and monitor human impacts on the marine environment (Karl and others, 2002). The study region is located off the central California coast, adjacent to San Francisco Bay and encompasses the Gulf of the Farallones National Marine Sanctuary. Geologic mapping of this area included the use of various remote sensing and sampling techniques such as sub-bottom profiling, sidescan-sonar and bathymetric mapping, gravity core and grab sampling, and photography. These data were used to define the surficial sediment distribution, underlying structure and sea floor morphology of the study area. The primary focus of this report is to present a georeferenced, digital sidescan-sonar mosaic of the study region. The sidescan-sonar data were acquired with the AMS-120 (120kHz) sidescan-sonar system during USGS cruise F9-89-NC. The dataset covers approximately 1000 km2 of the continental shelf between Point Reyes, California and Half Moon Bay, California, extending west to the continental shelf break near the Farallon Islands. The sidescan-sonar mosaic displays a heterogenous sea-floor environment, containing outcropping rock, ripples, dunes, lineations and depressions, as well as flat, featureless sea floor (Karl and others, 2002). These data, along with sub-bottom interpretation and ground truth data define the geologic framework of the region. The sidescan-sonar mosaic can be used with supplemental remote sensing and sampling data as a base for future research, helping to define the local current regime and predominant sediment transport directions and forcing conditions within the Gulf of Farallones. Purpose: These data were acquired during the sidescan-sonar survey completed in the Gulf of the Farallones in August, 1989 by the U.S. Geological Survey and were used to define the geological framework of the region. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19890802 Ending_Date: 19890815 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -123.398630 East_Bounding_Coordinate: -122.674261 North_Bounding_Coordinate: 37.998062 South_Bounding_Coordinate: 37.550340 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:1eebb3c3-8192-4a19-8e29-ad041e8ae210 Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: sonar Theme_Keyword: Sidescan-sonar Theme_Keyword: backscatter Theme_Keyword: USGS Theme_Keyword: U.S. Geological Survey Theme_Keyword: Coastal and Marine Geology Program Theme_Keyword: CMGP Theme_Keyword: field activity identifier F9-89-NC Theme_Keyword: field activity serial number 89020 Theme_Keyword: Woods Hole Science Center Theme_Keyword: imagery Theme_Keyword: AMS-120 Theme_Keyword: seafloor mapping Theme_Keyword: grey-scale image Theme_Keyword: GeoTIFF Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: oceans Theme_Keyword: imageryBaseMapsEarthCover Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: Data Categories for Marine Planning Theme_Keyword: distributions Theme_Keyword: physical habitats and geomorphology Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) Keywords Theme_Keyword: seabed Theme_Keyword: sidescan sonar Theme_Keyword: marine geophysics Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: sidescan sonar Theme_Keyword: image mosaics Theme_Keyword: marine geophysics Theme_Keyword: sea-floor characteristics Theme_Keyword: sea-floor acoustic reflectivity Place: Place_Keyword_Thesaurus: None Place_Keyword: Gulf of the Farallones Place_Keyword: Farallones Place_Keyword: California Place_Keyword: U.S. West Coast Place_Keyword: U.S. Pacific Coast Place_Keyword: North America Place_Keyword: Pacific Ocean Place_Keyword: United States Place_Keyword: Half Moon Bay Place_Keyword: Point Reyes Place_Keyword: Farallon Islands Place_Keyword: Bodega Bay Place_Keyword: San Francisco Access_Constraints: None Use_Constraints: Public domain data from the U.S. government is freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the originator of this dataset. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Edward M. Sweeney Contact_Organization: U.S. Geological Survey Contact_Position: Research Assistant Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: (508) 548-8700 Contact_Facsimile_Telephone: (508) 457-2310 Browse_Graphic: Browse_Graphic_File_Name: https://pubs.usgs.gov/of/2004/1082/html/pdf/FIG5.pdf Browse_Graphic_File_Description: Map showing sidescan-sonar mosaic of the Gulf of the Farallones. Browse_Graphic_File_Type: PDF Native_Data_Set_Environment: Microsoft Windows 2000 Version 5.1 (Build 2600) Service Pack 1; ESRI ArcCatalog 8.3.0.800 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: These data were acquired with an AMS-120 (120 kHz) sidescan-sonar system. All data were acquired during one geophysical cruise condcuted in 1989. These data were navigated using GPS and LORAN-C. The horizontal accuracy of these data is roughly +/- 50 meter. Additionally, no layback was estimated for the tow-vehicle. Thus, navigation was based on ship position and not tow-vehicle posistion. Thus, decreasing the horizontal positioning resolution of these data. Logical_Consistency_Report: These data were acquired with an AMS-120 (120 kHz) sidescan-sonar system, and processed following an identical procedure. Completeness_Report: This mosaic contains all the collected sidescan sonar data and is complete. Lineage: Process_Step: Process_Description: The sidescan-sonar data were acquired using an AMS-120 (120 kHz) sidescan-sonar system. The analog signal from the sidescan-sonar tow vehicle was aquired with and stored on a Triton Technologies, Inc. QMIPS data acquisition system, and then transferred to a Masscomp computer and stored on 8mm 54 MB digital data cartridge tapes. Radiometric corrections and geometric distortions were made using USGS software packages Xsonar and Showimage described in Danforth and others (1991) and Danforth (1997). The sidescan-sonar data were further processed and digitally mosaicked using PCI Geomatica Software and procedures described in Paskevich (1992) resulting in an enhanced, geospatially correct, sidescan-sonar mosaic with 4 meter/pixel resolution. The generated mosaic was exported as a TIFF image, with an associated ESRI world file. Adjustment in contrast levels were then made on the TIFF image file using Adobe Photoshp 6.0. Process_Date: 2004 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Edward M. Sweeney Contact_Organization: U.S. Geological Survey Contact_Position: Research Assistant Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543 Country: USA Contact_Voice_Telephone: (508) 548-8700 x2307 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: esweeney@usgs.gov Process_Step: Process_Description: Edits to the metadata were made to fix any errors that MP v 2.9.34 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. In some cases, this meant adding text "Information unavailable" or "Information unavailable from original metadata" for those required fields that were left blank. Other minor edits were probably performed (title, publisher, publication place, etc.). The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. Compare the metadata dates to determine which metadata file is most recent. Process_Date: 20161114 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 Contact_Voice_Telephone: 508-548-8700 x2251 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: vatnipp@usgs.gov Process_Step: Process_Description: Keywords section of metadata optimized for discovery in USGS Coastal and Marine Geology Data Catalog. Process_Date: 20170214 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Alan O. Allwardt Contact_Position: Contractor -- Information Specialist Contact_Address: Address_Type: Mailing and Physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-460-7551 Contact_Facsimile_Telephone: 831-427-4748 Contact_Electronic_Mail_Address: aallwardt@usgs.gov Process_Step: Process_Description: Crossref DOI link was added as the first link in the metadata. Process_Date: 20191118 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: Added keywords section with USGS persistent identifier as theme keyword (20200908). Removed links to a server Coastalmap that is no longer available (20230628). Process_Date: 20230628 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 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Pixel Row_Count: 12400 Column_Count: 15900 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: 0.999600 Longitude_of_Central_Meridian: -123.000000 Latitude_of_Projection_Origin: 0.000000 False_Easting: 500000.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 4.000000 Ordinate_Resolution: 4.000000 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: D_WGS_1984 Ellipsoid_Name: WGS_1984 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257224 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: There are no attributes associated with the GeoTIFF or MrSID image. Entity_and_Attribute_Detail_Citation: U.S. Geological Survey Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: (508) 548-8700 Contact_Facsimile_Telephone: (580) 457-2310 Resource_Description: Downloadable Data Distribution_Liability: Although this data set and its lineage have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data or its related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related items. Users must assume responsibility for the proper use of these data. The data should not be used at resolutions for which they are not intended. The data have not been reviewed for conformity with U.S. Geological Survey editorial standards, or the North American Strigraphic code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the US Government. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: TIFF Format_Version_Number: Information unavailable from original metadata. Format_Specification: GeoTIFF Format_Information_Content: A zip archive containing the GeoTIFF image, associated world file, and metadata. File_Decompression_Technique: zip archive Transfer_Size: 48.4 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://pubs.usgs.gov/of/2004/1082/arcgis/mosaic/farallones_tiff.zip Access_Instructions: Data may be retrieved via any WWW browser. Fees: None Technical_Prerequisites: This image is available as a GEOTIFF image with an accompanying world file. To utilize this data, the user must have an image viewer, image processing or GIS software package capable of importing a GEOTIFF image. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: (508) 548-8700 Contact_Facsimile_Telephone: (508) 457-2310 Resource_Description: Downloadable Data Distribution_Liability: Although this data set and its lineage have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data or its related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related items. Users must assume responsibility for the proper use of these data. The data should not be used at resolutions for which they are not intended. The data have not been reviewed for conformity with U.S. Geological Survey editorial standards, or the North American Strigraphic code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the US Government. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: SID Format_Version_Number: Information unavailable from original metadata. Format_Specification: MrSID Format_Information_Content: A zip archive containing the MrSID image, associated world file, and metadata. File_Decompression_Technique: zip archive Transfer_Size: 8 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://pubs.usgs.gov/of/2004/1082/arcgis/mosaic/farallones_sid.zip Access_Instructions: Data may be retrieved via any WWW browser. Fees: None Technical_Prerequisites: This image is available in a MrSID format with an accompanying world file. To utilize this data, the user must have an image viewer, image processing or GIS software package capable of importing a MrSID image. Metadata_Reference_Information: Metadata_Date: 20230628 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Edward M. Sweeney Contact_Organization: U.S. Geological Survey Contact_Position: Research Assistant Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: (508) 548-8700 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: whsc_data_contact@usgs.gov Contact_Instructions: The metadata contact email address is a generic address in the event the metadata contact is no longer with the USGS Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time