Identification_Information: Citation: Citation_Information: Originator: United States Geological Survey (USGS), Coastal and Marine Geology (CMG), Chief Scientist (James V. Gardner) Publication_Date: 2001 Title: Multibeam Mapping of the West Florida Shelf, Gulf of Mexico Geospatial_Data_Presentation_Form: ArcInfo GRID Description: Abstract: ArcInfo GRID format data generated from the 2001 multibeam sonar survey of the West Florida Shelf, Gulf of Mexico. The data include high-resolution bathymetry and calibrated acoustic backscatter. Purpose: These data are intended for science researchers, students, policy makers, and the general public. The data can be used with geographic information systems (GIS) or other software to display bathymetry and backscatter data of the West Florida Shelf, Gulf of Mexico. Supplemental_Information: Information for USGS Coastal and Marine Geology related activities are online at Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20010903 Ending_Date: 20011012 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -86.7166667 East_Bounding_Coordinate: -84.5833333 North_Bounding_Coordinate: 31.0833333 South_Bounding_Coordinate: 28.0000000 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: Marine Geology Theme_Keyword: Multibeam Theme_Keyword: Bathymetry Theme_Keyword: Backscatter Theme_Keyword: Water Depth Theme_Keyword: Ocean Floor Topography Theme_Keyword: Deep-water Reefs Place: Place_Keyword_Thesaurus: None Place_Keyword: West Florida Shelf Place_Keyword: FL Place_Keyword: Gulf of Mexico Place_Keyword: USA Access_Constraints:None Use_Constraints: Please recognize the U.S. Geological Survey (USGS) as the source of this information. USGS-authored or produced data and information are in the public domain. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: James V. Gardner Contact_Organization: United States Geological Survey (USGS) Coastal and Marine Geology (CMG) Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: USGS, MailStop 999, 345 Middlefield Road City: Menlo Park State_or_Province: CA Postal_Code: 94025-3561 Country: USA Contact_Voice_Telephone: (650) 329-5469 Contact_Facsimile_Telephone: (650) 329-5411 Contact_Electronic_Mail_Address: jvgardner@usgs.gov Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Not applicable for raster data. Logical_Consistency_Report: Unspecified Completeness_Report: Complete Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: 0.5 meters Vertical_Positional_Accuracy Vertical_Positional_Accuracy_Report: 0.05 percent of the water depth Lineage: Process_Step: Process_Description: The bathymetry and backscatter data were collected along a continuous swath perpendicular to the direction of the ship using a Kongsberg Simrad EM1002 multibeam sonar system. The data are cleaned of bad navigation and depth readings. The depth readings are gridded into a common grid. The gridded data are converted to ArcInfo GRID format using ArcInfo's ASCIIGRID command. Process_Date: 20011012 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: James V. Gardner Contact_Organization: United States Geological Survey (USGS) Coastal and Marine Geology (CMG) Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: USGS, MailStop 999, 345 Middlefield Road City: Menlo Park State_or_Province: CA Postal_Code: 94025-3561 Country: USA Contact_Voice_Telephone: (650) 329-5469 Contact_Facsimile_Telephone: (650) 329-5411 Contact_Electronic_Mail_Address: jvgardner@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: 16 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -87.00000 Latitude_of_Projection_Origin: 0.00000 False_Easting: 0.00 False_Northing: 0.00 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 8.0 Ordinate_Resolution: 8.0 Planar_Distance_Units: Meters Geodetic_Model: Horizontal_Datum_Name: WGS84 Ellipsoid_Name: WGS84 Semi-major_Axis: 6378137.00 meters Denominator_of_Flattening_Ratio: 0.003352811 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: NBATHYG is an ArcInfo GRID with the following attributes: Cell Size = 8.000 Data Type: Floating Point Number of Rows = 5643 Number of Columns = 6740 BOUNDARY Xmin = 527624.036 Xmax = 581544.036 Ymin = 3281094.779 Ymax = 3326238.779 STATISTICS Minimum Value = -129.937 Maximum Value = -46.920 Mean = -90.947 Standard Deviation = 19.106 NMOSG is an ArcInfo GRID with the following attributes: Cell Size = 8.000 Data Type: Floating Point Number of Rows = 5641 Number of Columns = 6736 BOUNDARY Xmin = 527640.055 Xmax = 581528.055 Ymin = 3281094.860 Ymax = 3326222.860 STATISTICS Minimum Value 115.000 Maximum Value = 243.556 Mean = 192.089 Standard Deviation = 7.428 CBATHYG is an ArcInfo GRID with the following attributes: Cell Size = 8.000 Data Type: Floating Point Number of Rows = 7091 Number of Columns = 8142 BOUNDARY Xmin = 556226.086 Xmax = 621362.086 Ymin = 3225095.066 Ymax = 3281823.066 STATISTICS Minimum Value -188.700 Maximum Value = -50.481 Mean = -101.783 Standard Deviation = 31.205 CMOSG is an ArcInfo GRID with the following attributes: Cell Size = 8.000 Data Type: Floating Point Number of Rows = 7091 Number of Columns = 8141 BOUNDARY Xmin = 556234.118 Xmax = 621362.118 Ymin = 3225095.105 Ymax = 3281823.105 STATISTICS Minimum Value 151.000 Maximum Value = 253.959 Mean = 191.949 Standard Deviation = 8.260 SBATHYG is an ArcInfo GRID with the following attributes: Cell Size = 8.000 Data Type: Floating Point Number of Rows = 5808 Number of Columns = 8270 BOUNDARY Xmin = 592166.910 Xmax = 658326.910 Ymin = 3193583.705 Ymax = 3240047.705 STATISTICS Minimum Value -188.390 Maximum Value = -48.146 Mean = -123.580 Standard Deviation = 32.989 SMOSG is an ArcInfo GRID with the following attributes: Cell Size = 8.000 Data Type: Floating Point Number of Rows = 5410 Number of Columns = 8263 BOUNDARY Xmin = 592223.251 Xmax = 658327.251 Ymin = 3196771.514 Ymax = 3240051.514 STATISTICS Minimum Value 151.000 Maximum Value = 250.000 Mean = 190.437 Standard Deviation = 8.699 SBBATHYG is an ArcInfo GRID with the following attributes: Cell Size = 4.000 Data Type: Floating Point Number of Rows = 5654 Number of Columns = 5107 BOUNDARY Xmin = 714201.893 Xmax = 734629.893 Ymin = 3104250.423 Ymax = 3126866.423 STATISTICS Minimum Value -152.840 Maximum Value = -68.994 Mean = -89.114 Standard Deviation = 17.127 SBMOSG is an ArcInfo GRID with the following attributes: Cell Size = 4.000 Data Type:Floating Point Number of Rows = 5648 Number of Columns = 5105 BOUNDARY Xmin = 714201.893 Xmax = 734621.893 Ymin = 3104265.597 Ymax = 3126857.597 STATISTICS Minimum Value 161.000 Maximum Value = 251.000 Mean = 195.320 Standard Deviation = 4.010 Entity_and_Attribute_Detail_Citation: none Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: United States Geological Survey (USGS) Information Services Contact_Address: Address_Type: mailing and physical address Address: Box 25286 City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: (888)ASK-USGS Resource_Description: M-01-GM data set Distribution_Liability These data not intended for navigational purposes. Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, these data and information are provided with the understanding that they are not guaranteed to be usable, timely, accurate, or complete. Users are cautioned to consider carefully the provisional nature of these data and information before using them for decisions that concern personal or public safety or the conduct of business that involves substantial monetary or operational consequences. Conclusions drawn from, or actions undertaken on the basis of, such data and information are the sole responsibility of the user. Neither the U.S. Government nor any agency thereof, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any data, software, information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. Trade, firm, or product names and other references to non-USGS products and services are provided for information only and do not constitute endorsement or warranty, express or implied, by the USGS, USDOI, or U.S. Government, as to their suitability, content, usefulness, functioning, completeness, or accuracy. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ArcInfo GRID Format_Version_Number: 8.0.2 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: Fees: None Metadata_Reference_Information: Metadata_Date: 20011030 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Peter Dartnell Contact_Organization: United States Geological Survey (USGS) Coastal and Marine Geology (CMG) Contact_Position: Physical Scientist Contact_Address: Address_Type: mailing and physical address Address: USGS, 400 Natural Bridges Drive City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Country: USA Contact_Voice_Telephone: 831-460-7415 Contact_Facsimile_Telephone: 831-427-4748 Contact_Electronic_Mail_Address: pdartnell@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata ("CSDGM version 2") Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: universal time