Metadata: Identification_Information: Citation: Citation_Information: Originator: Peter Dartnell Originator: James V. Gardner Publication_Date: 1999 Title: Gulf of Mexico Marine Geology and Geophysics from Field Activity: A-1-97-GM: East Flower Garden Bank bathymetry and backscatter data Larger_Work_Citation: Citation_Information: Originator: Peter Dartnell Originator: James V. Gardner Publication_Date: 1999 Title: Sea-Floor Images and Data from Multibeam Surveys in San Francisco Bay, Southern California, Hawaii, the Gulf of Mexico, and Lake Tahoe, California-Nevada Geospatial_Data_Presentation_Form: remote-sensing image Series_Information: Series_Name: U.S. Geological Survey Digital Data Series Issue_Identification: DDS-55 Publication_Information: Publication_Place: Menlo Park, CA Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/dds/dds-55/ Description: Abstract: Bathymetry and seafloor backscatter data for the Flower Gardens National Marine Sanctuary are provided in TIFF image format. This data set contains data, metadata, and formal metadata associated with a marine data collection activity referred to by the USGS/CMG Activity ID: A-1-97-GM Purpose: These data and information are intended for science researchers, students from elementary through college, policy makers, and general public. Pacific Seaflloor Mapping Project Test cruise. Supplemental_Information: Similar information is available for over 1500 other USGS/CMG-related Activities. If known, available are Activity-specific navigation, gravity, magnetics, bathymetry, seismic, and sampling data; track maps; and equipment information; as well as summary overviews, crew lists, and information about analog materials. Primary access to the USGS/CMG Information Bank's digital data, analog data, and metadata is provided through... http://walrus.wr.usgs.gov/docs/infobank/bear/programs/html/main/infohome.html This page accomodates a variety of search approaches (e.g., by ship, by region, by scientist, by equipment type, etc.). Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1997 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -132.00000 East_Bounding_Coordinate: -114.00000 North_Bounding_Coordinate: 50.00000 South_Bounding_Coordinate: 30.00000 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: marine geology Theme_Keyword: geospatial datasets Theme_Keyword: seafloor characteristics Theme_Keyword: sonar methods Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Categories Theme_Keyword: geoscientificInformation Place: Place_Keyword_Thesaurus: none Place_Keyword: Gulf of Mexico Place: Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4 Place_Keyword: OC16 = Gulf of Mexico Access_Constraints: Physical materials are under controlled on-site access. Use_Constraints: Please recognize the U.S. Geological Survey (USGS) as the source of this information. Physical materials are under controlled on-site access. Some USGS information accessed through this means may be preliminary in nature and presented without the approval of the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the responsibility of the user. This information is not intended for navigational purposes. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Peter Dartnell Contact_Organization: U.S. Geological Survey, GEO-WRG-MCS Contact_Address: Address_Type: mailing address Address: Mail Stop 999 Bldg 15, McKelvey Building City: Menlo Park State_or_Province: CA Postal_Code: 94025 Country: USA Contact_Voice_Telephone: 650-329-5460 Contact_Facsimile_Telephone: 650-329-5411 Contact_Electronic_Mail_Address: pdartnell@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/dds/dds-55/pacmaps/images/ef_index.gif Browse_Graphic_File_Description: Index map showing area depicted in the data, with coastline and regional bathymetric contours. 491x417 pixels, 32-bit RGB true color, 30 kbytes. Browse_Graphic_File_Type: GIF Cross_Reference: Citation_Information: Originator: United States Geological Survey (USGS), Coastal and Marine Geology (CMG) Publication_Date: Unknown Title: USGS/CMG Information Bank Other_Citation_Details: Updated daily Online_Linkage: http://walrus.wr.usgs.gov/docs/infobank/bear/programs/html/main/infohome.html Data_Quality_Information: Lineage: Process_Step: Process_Description: East Flower Gardens was mapped as part of a test cruise which took place in December 1997. The data is so spectacular that is was decided to publish the data. This area was mapped using a Kongsberg Simrad EM-300 Multibeam System hull mounted to C&C Technologies' RV Ocean Alert. 1. Bathymetry and backscatter data processed on Silicon Graphic computer using software developed by the Ocean Mapping Group, University of New Brunswick. (see USGS Open File Report 98-509, The Bathymetry of Lake Tahoe, California-Nevada) 2. Processed data downloaded to a Sun Sparc Ultra 2, running Solaris 2.5 as an ascii file (longitude, latitude, depth, or backscatter DN value) 3. In Arc/Info 7.1.2 a point coverage is created from the ascii file. 4. Point coverge is projected from Geographic Coordinate System to UTM projection. 5. Projected point coverage is gridded using IDW (Inverse Distance Weighted) function. 6a. Grid is exported to Arc/Info export (.e00) file. 6b. Grid is converted to a TIFF image using the "Gridimage" command. 7. Both the export and TIFF files are compressed using UNIX version of GZIP. Process_Date: 199712 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: grid cell Row_Count: 2500 Column_Count: 1974 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 15 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -93 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 5 Ordinate_Resolution: 5 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137 Denominator_of_Flattening_Ratio: 298.257 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: Bathymetry values are depth in meters >Cell Size = 5.000 >Data Type: Floating Point >Number of Rows = 2500 >Number of Columns = 1974 BOUNDARY >Xmin = 435146.562 >Xmax = 445016.562 >Ymin = 3083306.750 >Ymax = 3095806.750 STATISTICS >Minimum Value = -146.037 >Maximum Value = -18.650 >Mean = -95.788 >Standard Deviation = 23.502 Backscatter values are a digital number (DN) associated with the reflected energy off the seafloor >Cell Size = 5.000 >Data Type: Floating Point >Number of Rows = 2500 >Number of Columns = 1974 BOUNDARY >Xmin = 435146.562 >Xmax = 445016.562 >Ymin = 3083306.750 >Ymax = 3095806.750 STATISTICS >Minimum Value = 27.898 >Maximum Value = 231.098 >Mean = 178.342 >Standard Deviation = 9.168 Entity_and_Attribute_Detail_Citation: http://pubs.usgs.gov/dds/dds-55/pacmaps/openfile.htm Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: USGS Information Services Contact_Address: Address_Type: mailing address Address: Box 25286 Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 1-888-ASK-USGS Contact_Facsimile_Telephone: 303-202-4693 Contact_Electronic_Mail_Address: ask@usgs.gov Resource_Description: USGS Digital Data Series DDS-55 Distribution_Liability: Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Although all data and software published in this report have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials and (or) the functioning of the software. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of this data, software, or related materials. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: TIFF Format_Version_Number: 6.0 Format_Information_Content: Seafloor bathymetry and backscatter data File_Decompression_Technique: gzip -d Transfer_Size: 9.4 megabytes Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/dds/dds-55/pacmaps/tiffs/ef_bathy.tif.gz Network_Resource_Name: http://pubs.usgs.gov/dds/dds-55/pacmaps/tiffs/ef_back.tif.gz Digital_Form: Digital_Transfer_Information: Format_Name: ArcInfo export (GRID) Format_Version_Number: 7.2.1 Format_Information_Content: Seafloor bathymetry and backscatter File_Decompression_Technique: gzip -d Transfer_Size: 40 megabytes Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/dds/dds-55/pacmaps/exports/ef_bathy.e00.gz Network_Resource_Name: http://pubs.usgs.gov/dds/dds-55/pacmaps/exports/ef_back.e00.gz Fees: none Metadata_Reference_Information: Metadata_Date: 20130501 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Peter N. Schweitzer Contact_Address: Address_Type: mailing address Address: Mail Stop 954 National Center U.S. Geological Survey 12201 Sunrise Valley Drive City: Reston State_or_Province: VA Postal_Code: 20192 Country: USA Contact_Voice_Telephone: (703) 648-6533 Contact_Facsimile_Telephone: (703) 648-6560 Contact_Electronic_Mail_Address: pschweitzer@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998