Identification_Information: Citation: Citation_Information: Originator: VeeAnn Cross Publication_Date: 2005 Title: G97_15MNPNT.SHP - 15 minute interval navigation points for the 1997 R/V GYRE (97006) seismic tracklines Edition: 1.0 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: Open-File Report Issue_Identification: 2005-1071 Publication_Information: Publication_Place: Woods Hole Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: http://pubs.usgs.gov/of/2005/1071/data/seismic/1997/nav/g97_15mnpnt.zip Larger_Work_Citation: Citation_Information: Originator: Twichell, D.C Originator: Cross, V.A. Originator: Paskevich, V.F. Originator: Hutchinson, D.R. Originator: Winters, W.J. Originator: Hart, P.E. Publication_Date: 2005 Title: GIS of selected geophysical and core data in the northern Gulf of Mexico continental slope collected by the U.S. Geological Survey Edition: 1.0 Series_Information: Series_Name: Open-File Report Issue_Identification: 2005-1071 Publication_Information: Publication_Place: Woods Hole Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Other_Citation_Details: 1 DVD-ROM Online_Linkage: http://pubs.usgs.gov/of/2005/1071 Description: Abstract: Since 1982 the, U.S. Geological Survey (USGS) has collected a large amount of surficial and shallow subsurface geologic information in the deep parts of the Gulf of Mexico. These data include digital sidescan sonar imagery, digital seismic-reflection data, and descriptions and analyses of piston and gravity cores. The data were collected during several different projects that addressed surficial and shallow subsurface geologic processes. Some of these data sets have already been published, but the growing interest in the occurrence and distribution of gas hydrates in the Gulf of Mexico warrants integrating these existing data and associated interpretations into a GIS to provide regional background information for ongoing and future gas hydrate research. Purpose: This GIS shapefile shows points at a fifteen minute interval along the tracklines on which single-channel seismic-reflection profiles were collected in 1997 aboard the R/V GYRE. The seismic data have been published in SEG-Y format by Nealon and others (2000). Each point has the Julian day, time, and line number associated with it. The seismic profiles are annotated with time, so this shapefile can be used to correlate features on the seismic profiles with the tracklines Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19970409 Ending_Date: 19970413 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -92.778955 East_Bounding_Coordinate: -91.995983 North_Bounding_Coordinate: 27.246257 South_Bounding_Coordinate: 26.449550 Keywords: Theme: Theme_Keyword_Thesaurus: General Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Coastal and Marine Geology Program Theme_Keyword: CMGP Theme_Keyword: Woods Hole Science Center Theme_Keyword: WHSC Theme_Keyword: points Theme_Keyword: shapefile Theme_Keyword: GI Airgun Theme_Keyword: R/V GYRE Theme_Keyword: Information Archives Field Activity 97006 Theme_Keyword: navigation Theme_Keyword: 15 minute time fix Theme_Keyword: seismic tracklines Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: oceans and estuaries Theme_Keyword: location Theme_Keyword: geoscientificInformation Place: Place_Keyword_Thesaurus: General Place_Keyword: Gulf of Mexico Place_Keyword: Continental slope Place_Keyword: Bryant Canyon Access_Constraints: None Use_Constraints: Public domain data from the U.S. government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: VeeAnn Cross Contact_Organization: U.S. Geological Survey Contact_Position: Marine Geologist 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 x 2251 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: vatnipp@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/of/2005/1071/data/seismic/1997/nav/g97_15mnpnts.gif Browse_Graphic_File_Description: Browse image showing overview of data extent and coverage. Browse_Graphic_File_Type: GIF Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/of/2005/1071/data/seismic/1997/nav/g97_15mnpnts-thumb.gif Browse_Graphic_File_Description: Thumbnail image showing overview of data extent and coverage. Browse_Graphic_File_Type: GIF Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.0.0.535 Cross_Reference: Citation_Information: Originator: Nealon, J.W. Originator: Dillon, W.P. Originator: Twichell, D.C. Publication_Date: 2000 Title: Seismic reflection results of the GYRE 1997 cruise at the Bryant Canyon of the Louisiana Gulf Coast Edition: 1.0 Series_Information: Series_Name: Open-File Report Issue_Identification: 99-449 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/of99-449/ Data_Quality_Information: Logical_Consistency_Report: No additional checks for topological consistency were performed on this data set. No duplicate features are present. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Navigation data were collected using both Differential GPS and P-CODE GPS receivers. The GI Airgun was towed 10 m aft of the ship. The two-channel streamer was towed approximately 100 m aft of the ship, and each channel was 25 m long. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: The airgun was towed at a depth of approximately 1 meter. The streamer was towed at a depth of approximately 5 m. There was no correction to a datum such as mean sea level. Lineage: Process_Step: Process_Description: GPS navigation was logged at a 10 second interval to a PC. Source_Used_Citation_Abbreviation: GPS receiver Source_Produced_Citation_Abbreviation: nav1.raw Source_Produced_Citation_Abbreviation: nav2.raw Source_Produced_Citation_Abbreviation: nav3.raw Source_Produced_Citation_Abbreviation: nav4.raw Source_Produced_Citation_Abbreviation: nav5.raw Process_Step: Process_Description: The time, latitude, and longitude fields were extracted from the raw data files and written to a text file. Fixes at a 1-minute interval were extracted from this file and then further edited to include only the intervals of time when seismic data were being collected. This file then was further subsampled to a 15-minute interval. The resulting file was imported to ArcView and converted to a shapefile, which provides a point every minute along the survey tracklines. Source_Used_Citation_Abbreviation: nav1.raw Source_Used_Citation_Abbreviation: nav2.raw Source_Used_Citation_Abbreviation: nav3.raw Source_Used_Citation_Abbreviation: nav4.raw Source_Used_Citation_Abbreviation: nav5.raw Source_Produced_Citation_Abbreviation: nav_15mnpnt.shp Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: VeeAnn Cross Contact_Organization: U.S. Geological Survey Contact_Position: Marine Geologist 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 x 2251 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: vatnipp@usgs.gov Process_Step: Process_Description: Renamed g97_15mnpnt.shp Source_Used_Citation_Abbreviation: nav_15mnpnt.shp Process_Date: 2005 Source_Produced_Citation_Abbreviation: g97_15mnpnt.shp Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: David Twichell Contact_Organization: U.S. Geological Survey Contact_Position: Oceanographer Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: (508) 548-8700 x2266 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: dtwichell@usgs.gov Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Entity point Point_and_Vector_Object_Count: 367 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.000000 Longitude_Resolution: 0.000000 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257222 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: g97_15mnpnt Entity_Type_Definition: Feature geometry Entity_Type_Definition_Source: ESRI Attribute: Attribute_Label: FID 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: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: LONGITUDE Attribute_Definition: longitude coordinate, in decimal degrees, of navigation fix Attribute_Definition_Source: user defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -92.778955 Range_Domain_Maximum: -91.995983 Attribute_Units_of_Measure: decimal degrees Attribute_Measurement_Resolution: .000001 Attribute: Attribute_Label: LATITUDE Attribute_Definition: latitude coordinate, in decimal degrees, of navigation fix Attribute_Definition_Source: User defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 26.449550 Range_Domain_Maximum: 27.246257 Attribute_Units_of_Measure: decimal degrees Attribute_Measurement_Resolution: .000001 Attribute: Attribute_Label: JDTIME Attribute_Definition: Date and time recorded as Julian day: Hour: Minute: Second Attribute_Definition_Source: User defined Attribute_Domain_Values: Unrepresentable_Domain: Character string - JDAY:hh:mm:ss Attribute: Attribute_Label: LINE Attribute_Definition: Line number for seismic profile Attribute_Definition_Source: User defined Attribute_Domain_Values: Unrepresentable_Domain: Character string - line identifier Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: David Twichell Contact_Organization: U.S. Geological Survey Contact_Position: Oceanographer 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 x2266 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: dtwichell@usgs.gov Resource_Description: Downloadable Data Distribution_Liability: Although this data set has been used by the U.S. Geological Survey (USGS), no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and/or 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 materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: SHP Format_Version_Number: 3.3 Format_Specification: ESRI point shapefile Format_Information_Content: The SHP file contains the geospatial data. The SHX file contains the index of the geospatial data. The DBF file contains the attribute data in dBase format. The PRJ file contains the coordinate system information (optional). The AVL file contains the legend information (optional). The SBN and SBX files contain the spatial index of the geospatial data (optional). The XML file contains the metadata describing the data set .shp.xml. An ASCII version of the metadata file. A browse graphic showing the data layer coverage and extent (optional). File_Decompression_Technique: zip Transfer_Size: 0.010 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/of/2005/1071/data/seismic/1997/nav/g97_15mnpnt.zip Access_Instructions: Data may be retrieved via any WWW browser. Offline_Option: Offline_Media: DVD-ROM Recording_Capacity: Recording_Density: 4.75 Recording_Density_Units: Gbytes Recording_Format: UDF Fees: None Technical_Prerequisites: The data are available in Environmental Systems Research Institute (ESRI) shapefile format. The user must have ArcGIS® or ArcView® 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing data. A free data viewer, arcexplorer, capable of displaying the data is available from ESRI at www.esri.com. Metadata_Reference_Information: Metadata_Date: 20051212 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: David Twichell Contact_Organization: U.S. Geological Survey Contact_Position: Oceanographer 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: 508-458-8700 x2266 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: dtwichell@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Access_Constraints: None Metadata_Use_Constraints: None Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile