Metadata: Identification_Information: Citation: Citation_Information: Originator: G.R. Cochrane Originator: S.R. Hartwell Originator: S.Y. Johnson Publication_Date: 2017 Title: Seafloor character--Offshore of Gaviota Map Area, California Geospatial_Data_Presentation_Form: GeoTiff Online_Linkage: https://doi.org/10.5066/F7TH8JWJ Larger_Work_Citation: Citation_Information: Originator: Nadine E. Golden Publication_Date: 2013 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 Online_Linkage: https://pubs.usgs.gov/ds/781/ Online_Linkage: https://www.sciencebase.gov/arcgis/rest/services/Catalog/58a34164e4b0c82512869be3/MapServer Online_Linkage: https://www.sciencebase.gov/arcgis/services/Catalog/58a34164e4b0c82512869be3/MapServer/WMSServer?request=GetCapabilities&service=WMS Description: Abstract: This part of DS 781 presents data for the Seafloor character map of the Offshore of Gaviota map area, California. The vector data file is included in "SeafloorCharacter_OffshoreGaviota.zip," which is accessible from https://doi.org/10.5066/F7TH8JWJ. These data accompany the pamphlet and map sheets of Johnson, S.Y., Dartnell, P., Cochrane, G.R., Hartwell, S.R., Golden, N.E., Kvitek, R.G., and Davenport, C.W. (S.Y. Johnson and S.A. Cochran, eds.), 2018, California State Waters Map Series-Offshore of Gaviota, California: U.S. Geological Survey Open-File Report 2018-1023, pamphlet 41 p., 9 sheets, scale 1:24,000, https://doi.org/10.3133/ofr20181023. This raster-format seafloor-character map shows five substrate classes in the Offshore of Gaviota map area, California. The substrate classes mapped in this area have been colored to indicate which of the following California Marine Life Protection Act depth zones and the Coastal and Marine Ecological Classification Standard (CMECS) slope classes they belong: Depth Zone 2 (intertidal to 30 m), Depth Zone 3 (30 to 100 m), Depth Zone 4 (100 to 200 m), Slope Class 1 (0 degrees - 5 degrees; flat), and Slope Class 2 (5 degrees - 30 degrees; sloping). Depth Zone 1 (intertidal), Depth Zone 5 (greater than 200 m), and Slope Classes 3 and 4 (greater than 30 degrees) are not present in this map area. The map is created using a supervised classification method described by Cochrane (2008), using multibeam echosounder (MBES) bathymetry and backscatter data collected and processed between 1998 and 2014. References Cited: Cochrane, G.R., 2008, Video-supervised classification of sonar data for mapping seafloor habitat, in Reynolds, J.R., and Greene, H.G., eds., Marine habitat mapping technology for Alaska: Fairbanks, University of Alaska, Alaska Sea Grant College Program, p. 185-194, available at http://doc.nprb.org/web/research/research%20pubs/615_habitat_mapping_workshop/Individual%20Chapters%20High-Res/Ch13%20Cochrane.pdf. Purpose: These data are intended for science researchers, students, policy makers, and the general public. These data can be used with geographic information systems or other software to identify local seafloor character. Supplemental_Information: none Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 2007 Ending_Date: 2009 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: none planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -120.379749 East_Bounding_Coordinate: -120.185163 North_Bounding_Coordinate: 34.474633 South_Bounding_Coordinate: 34.401551 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:589a3d7ce4b0efcedb71a670 Theme: Theme_Keyword_Thesaurus: Global Change Master Directory (GCMD) Theme_Keyword: Oceans > Bathymetry/SeafloorTopography > Bathymetry Theme_Keyword: Oceans > Bathymetry/SeafloorTopography > Seafloor Topography Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme_Keyword: environment Theme_Keyword: oceans Theme_Keyword: imageryBaseMapsEarthCover Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: sea-floor characteristics Theme_Keyword: earth sciences Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Pacific Ocean Place_Keyword: State of California Place_Keyword: Gaviota Place_Keyword: Santa Barbara 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 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: 95060-5792 Country: US Contact_Voice_Telephone: 831-427-4747 Contact_Facsimile_Telephone: 831-427-4748 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: https://www.sciencebase.gov/catalog/file/get/5898ecd9e4b0efcedb70779e?name=SeafloorCharacter_OffshoreGaviota.jpg Browse_Graphic_File_Description: Seafloor character of Offshore of Gaviota map area Browse_Graphic_File_Type: JPEG Native_Data_Set_Environment: Microsoft Windows Server 2008 R2 Version 6.1 (Build 7601) Service Pack 1; ESRI ArcGIS 10.4.1.5686 Cross_Reference: Citation_Information: Originator: Samuel Y. Johnson Originator: Peter Dartnell Originator: Guy R. Cochrane Originator: Stephen R. Hartwell Originator: Nadine E. Golden Originator: Rikk G. Kvitek Originator: Clifton W. Davenport Publication_Date: 2018 Title: California State Waters Map Series--Offshore of Gaviota, California Geospatial_Data_Presentation_Form: pamphlet and map sheets Series_Information: Series_Name: Open-File Report Issue_Identification: 2018-1023 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.3133/ofr20181023 Data_Quality_Information: Logical_Consistency_Report: Map elements were visually checked for overshoots, undershoots, duplicate features, polygon closure, and other errors by the lead authors and by the GIS technician(s) who created the digital database. Review drafts of the map were reviewed internally by at least two other geologists for consistency with basic geologic principles and general conformity to USGS mapping standards. Completeness_Report: Data are complete: no offshore features that could be accurately identified and represented at the compilation scale of 1:24,000 were eliminated or generalized. The smallest area represented is approximately 100 square meters. All geospatial database elements are attributed. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Positional information reflects the position of the camera and was collected using a still photo camera, WAAS-enabled GSP unit, recording at between 1 to 2 nm. DGPS (WAAS) accuracy for position is less than 3 meters. (From Garmin GPSMAP 76C/76CS Specifications, M01-10108-00, Rev0304, (). Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Peter Dartnell Originator: Rikk G. Kvitek Publication_Date: 2017 Title: Bathymetry--Offshore of Gaviota Map Area, California Geospatial_Data_Presentation_Form: raster digital data Series_Information: Series_Name: Data Series Issue_Identification: DS 781 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: See metadata for ("Bathymetry_OffshoreGaviota_metadata.txt") in DS 781 for source data and postprocessing/reprocessing information. Online_Linkage: http://pubs.usgs.gov/ds/781/ Type_of_Source_Media: digital file of gridded bathymetry data (ArcInfo GRID) Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 2007 Ending_Date: 2009 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: bathymetry Source_Contribution: Gridded bathymetry data (2-meter). Source_Information: Source_Citation: Citation_Information: Originator: Peter Dartnell Originator: Rikk G. Kvitek Publication_Date: 2017 Title: Backscatter--Offshore of Gaviota Map Area, California Geospatial_Data_Presentation_Form: raster digital data Series_Information: Series_Name: Data Series Issue_Identification: DS 781 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: See metadata for ("Backscatter_gaviota_metadata.txt" in DS 781 for amplitude source data and postprocessing/reprocessing information. Online_Linkage: http://pubs.usgs.gov/ds/781/ Type_of_Source_Media: digital file of gridded amplitude data (ArcInfo GRID) Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 2007 Ending_Date: 2009 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: backscatter Source_Contribution: Gridded amplitude data (2-meter). Source_Information: Source_Citation: Citation_Information: Originator: Nadine E. Golden Originator: Guy R. Cochran Publication_Date: 2013 Title: California Seafloor Mapping Program video and photograph portal Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/F7J1015K Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/F7J1015K Type_of_Source_Media: seafloor video and photographs Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2013 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: imagery Source_Contribution: seafloor video and photographs used to interpret seafloor geology Process_Step: Process_Description: The seafloor-character map was produced using video-supervised maximum likelihood classification of the bathymetry and intensity of return (backscatter) from sonar systems. The classification was supervised using signatures defined by hand-drawn polygons located through sediment samples and video-observation ground truthing applying methodology described in Cochrane (2008), available at http://doc.nprb.org/web/research/research%20pubs/615_habitat_mapping_workshop/Individual%20Chapters%20High-Res/Ch13%20Cochrane.pdf. The two variants used in this classification were backscatter intensity and derivative rugosity. Rugosity measures terrain ruggedness as the variation in three-dimensional orientation of grid cells within a neighborhood. Vector analysis is used to calculate the dispersion of vectors normal (orthogonal) to grid cells within the specified neighborhood. This method effectively captures variability in slope and aspect into a single measure. Ruggedness values in the output raster map can range from 0 (no terrain variation) to 1 (complete terrain variation). The calculation was performed using the Terrain Ruggedness (VRM) tool within ESRI's Benthic Terrain Modeler toolset (available at http://esriurl.com/5754). Source_Used_Citation_Abbreviation: bathymetry Source_Used_Citation_Abbreviation: backscatter Source_Used_Citation_Abbreviation: imagery Process_Date: 2016 Process_Step: Process_Description: Metadata was modified to add accompanying USGS Open-File Report to the Larger Works section. USGS Thesaurus and keywords were added. Minor typos were corrected. No data information was changed. Process_Date: 20180406 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Susan A Cochran Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060-5792 Country: USA Contact_Voice_Telephone: (831) 460-7545 Contact_Electronic_Mail_Address: scochran@usgs.gov Process_Step: Process_Description: Information for accompanying Open-File Report was moved from secondary Larger Works section to Abstract and Cross Reference sections. Point of Contact information was updated. Details about different Network Resource Name links was given in the Access Instructions section. Phone number for Metadata Contact was corrected. No data information was changed. Process_Date: 20180904 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Susan A Cochran Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060-5792 Country: USA Contact_Voice_Telephone: (831) 460-7545 Contact_Electronic_Mail_Address: scochran@usgs.gov 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 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Pixel Row_Count: 3819 Column_Count: 8846 Vertical_Count: 1 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: NAD 1983 UTM Zone 10N Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -123.0 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000.0 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 2.0 Ordinate_Resolution: 2.0 Planar_Distance_Units: Meter Geodetic_Model: Horizontal_Datum_Name: NAD 1983 Ellipsoid_Name: GRS80 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257223563 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: SeafloorCharacter_2m_OffshoreGaviota.tif.vat Entity_Type_Definition: The shapefile attributes include VALUE - code for the seafloor character classes, COUNT - number of pixels, SLOPE - slope classes, DEPTH_ZONE - depth zones, SUBSTRATE - substrate classes, SUBST_DESC - short description of substrate classes, and FULL_DESC - detailed description of substrate classes. The shapefile can be added to any ESRI ArcMap project. Entity_Type_Definition_Source: ESRI Attribute: Attribute_Label: Rowid Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: VALUE Attribute_Definition: This seafloor-character class was produced using video-supervised maximum-likelihood classification of the bathymetry and backscatter (intensity of return) signals from sonar systems. Derivative roughness (rugosity) and backscatter intensity were used as variants in the classification. The resulting five substrate classes (I-V) were divided into the Depth Zones (see Attribute: DEPTH_ZONE) by adding to the original grid value in increments of 10. Depth Zone 2, add 0 to grid value; Depth Zone 3, add 10 to grid value; Depth Zone 4, add X to grid value. The resulting grid was further classified into Slope Classes (see Attribute: SLOPE) by adding to the classified raster values (including depth zones) in increments of 50. Slope Class 1, add 0 to grid value; and Slope Class 2, add 50 to grid value. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 122 Attribute_Units_of_Measure: Integers 1 - 122 representing seafloor character classes. Attribute: Attribute_Label: COUNT Attribute_Definition: The number of pixels (2 m x 2 m size grid cell) represented in each seafloor class (see Attribute: VALUE). Attribute_Definition_Source: ESRI Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3 Range_Domain_Maximum: 10946990 Attribute_Units_of_Measure: Integers 3 - 10946990 pixel count. Attribute: Attribute_Label: SLOPE Attribute_Definition: The slope zones for the final seafloor-character map grid were identified on the basis of the smoothed bathymetry grid. The smoothing was done by applying focal statistics to the original bathymetry grid. The tool uses a moving window and calculates the mean value of the central pixel within a circular neighborhood of 20 m radius along the whole raster map. The resulting raster map represents a smoothed value highlighting overall trends and eliminates local varieties in the terrain (such as higher slopes along rock outcrops). Slope class values are: 1 (flat; 0 degrees to 5 degrees), 2 (sloping; 5 degrees to 30 degrees), or 3 (steeply sloping; 30 degrees to 60 degrees), 4 (vertical; 60 degrees to 90 degrees), or 5 (overhang; greater than 90 degrees). In the Offshore of Gaviota map area, only Slope Classes 1 and 2 are present. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 2 Attribute_Units_of_Measure: Integer value 1 or 2 representing slope class of 0-30 degrees as described above. Attribute: Attribute_Label: DEPTH_ZONE Attribute_Definition: The depth zones for the final seafloor-character map grid were identified on the basis of the smoothed bathymetry grid. The smoothing was done by applying focal statistics to the original bathymetry grid. The tool uses a moving window and calculates the mean value of the central pixel within a circular neighborhood of 20 m radius along the whole raster map. The resulting raster map represents a smoothed value highlighting overall trends and eliminates local varieties in the terrain (such as varying depths along rock outcrops). Depth Zone values are: Depth Zone 1, intertidal; Depth Zone 2, intertidal to 30 m; and Depth Zone 3, 30 to 100 m, Depth Zone 4, 100 to 200 m; and Depth Zone 5, deeper than 200 m (California Department of Fish and Game, 2008). In the Offshore of Gaviota map area, only Depth zones 2, 3, and 4 are present Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2 Range_Domain_Maximum: 4 Attribute_Units_of_Measure: Integer values 2-4 representing depth zones as described above. Attribute: Attribute_Label: SUBSTRATE Attribute_Definition: Coded values of the substrate classes. Class 1, Fine- to medium-grained smooth sediment; Class 2, Mixed smooth sediment and rock; Class 3, Rock and boulder, rugose; Class 4, Medium- to coarse- grained sediment; Class 5, Hard anthropogenic material Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 5 Attribute_Units_of_Measure: Integer values 1-5 representing substrate classes as described above. Attribute: Attribute_Label: SUBST_DESC Attribute_Definition: Summary description of the five substrate classes coded by the attribute SUBSTRATE. Class 1, Fine- to medium-grained smooth sediment; Class 2, Mixed smooth sediment and rock; Class 3, Rock and boulder, rugose; Class 4, Medium to coarse grained (in scour depressions); Class 5, Rugged anthropogenic material Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Names are in text form, maximum length: 50 Attribute: Attribute_Label: FULL_DESC Attribute_Definition: Detailed description of the five substrate classes coded by the attribute SUBSTRATE. Class 1, Low backscatter, low rugosity, typically mud to medium-grained sand, often rippled and/or burrowed; Class 2, Moderate to very high backscatter, low rugosity, typically coarse-grained sand, gravel, cobble and bedrock; Class 3, High backscatter, and high rugosity, typically boulder and rugose bedrock; Class 4, Very high backscatter, low rugosity; typically medium- to coarse-grained, with some shell hash in shallow depressions; Class 5, High backscatter, low rugosity; related to development by humans. Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Names are in text form, maximum length: 250 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 Country: USA Contact_Voice_Telephone: 1-888-275-8747 Contact_Electronic_Mail_Address: sciencebase@usgs.gov Resource_Description: The .zip file (SeafloorCharacter_OffshoreGaviota.zip) includes the .lyr, .tfw, .tif, .tif_ColorRamp.SLD, .tif.aux.xml, .tif.ovr, .tif.vat.cpg, and .tif.vat.dbf files, as well as FGDC-compliant metadata for the Seafloor character data layer in the Offshore of Gaviota map area, California. 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: TIFF Format_Version_Number: ArcMap (version 10.0, ESRI, 2011) Format_Specification: Raster data layer is registered TIFF image in the UTM Zone 10 coordinate system with datum NAD83. Format_Information_Content: The .zip file for the TIFF image includes the .lyr, .tfw, .tif, .tif_ColorRamp.SLD, .tif.aux.xml, .tif.ovr, .tif.vat.cpg, and .tif.vat.dbf files, as well as FGDC-compliant metadata for the Backscatter data layer of Offshore Gaviota, California. File_Decompression_Technique: WinZip Transfer_Size: 1.2 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/589a3d7ce4b0efcedb71a670?facet=SeafloorCharacter_OffshoreGaviota Network_Resource_Name: https://doi.org/10.5066/F7TH8JWJ Network_Resource_Name: https://pubs.usgs.gov/ds/781/ Access_Instructions: Data can be downloaded using the Network Resource links. The first link begins a direct download of this particular dataset. The second link goes to a landing page containing all of the data for a given map area. The third link goes to a landing page for the entire data series, which has links to all the map areas that have data. 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 TIFF. Users should download the ArcGIS Project File, OffshoreGaviotaGIS.mxd.zip, a compressed (with the "zip" command) version of the ArcMap document (.mxd) that has all the data layers loaded in the table of contents for "Offshore Gaviota" and has all the data symbolized as on the OFR map sheets. Download and save this ArcGIS project file, including all data layers, to the directory the user has created for this GIS. Metadata_Reference_Information: Metadata_Date: 20201019 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: 95060-5792 Country: US Contact_Voice_Telephone: 831-427-4747 Contact_Facsimile_Telephone: 831-427-4748 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998