Cross, VeeAnn, 2005, G97_1MNLINE.SHP - Tracklines for seismic-reflection data collected during R/V GYRE cruise 97006: Open-File Report 2005-1071, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, MA.This is part of the following larger work.Online Links:
Twichell, D.C., Cross, V.A., Paskevich, V.F., Hutchinson, D.R., Winters, W.J., and Hart, P.E., 2005, GIS of selected geophysical and core data in the northern Gulf of Mexico continental slope collected by the U.S. Geological Survey: Open-File Report 2005-1071, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, MA.Online Links:
This is a Vector data set. It contains the following vector data types (SDTS terminology):
Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000000. Longitudes are given to the nearest 0.000000. Latitude and longitude values are specified in Decimal degrees.
The horizontal datum used is North American Datum of 1983.
The ellipsoid used is Geodetic Reference System 80.
The semi-major axis of the ellipsoid used is 6378137.000000.
The flattening of the ellipsoid used is 1/298.257222.
Sequential unique whole numbers that are automatically generated.
Coordinates defining the features.
| Range of values | |
|---|---|
| Minimum: | 1 |
| Maximum: | 18 |
| Units: | integer count |
| Resolution: | 1 |
Character string identifying the survey line
| Range of values | |
|---|---|
| Minimum: | 10846 |
| Maximum: | 60911 |
| Units: | meters |
| Resolution: | 1 |
Character string containing the Windows Environment Label and path to the seismic profile assiciated with the survey line
(508) 548-8700 x 2251 (voice)
(508) 457-2310 (FAX)
vatnipp@usgs.gov
This GIS shapefile shows the tracklines along which single-channel seismic-reflection profiles were collected in 1997 aboard the R/V GYRE. The survey focused on the Bryant Canyon turbidite pathway, which crosses the Louisiana continental slope. 562 km of single-channel seismic data were collected during this cruise.
Data sources used in this process:
Data sources produced in this process:
Person who carried out this activity:
(508) 548-8700 x 2251 (voice)
(508) 457-2310 (FAX)
vatnipp@usgs.gov
Data sources produced in this process:
Person who carried out this activity:
(508) 548-8700 x2266 (voice)
(508) 457-2310 (FAX)
dtwichell@usgs.gov
Data sources produced in this process:
Nealon, J.W., Dillon, W.P., and Twichell, D.C., 2000, Seismic reflection results of the GYRE 1997 cruise at the Bryant Canyon of the Louisiana Gulf Coast: Open-File Report 99-449, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, MA.Online Links:
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.
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.
No additional checks for topological consistency were performed on this data set. No duplicate features are present.
Are there legal restrictions on access or use of the data?
- 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.
(508) 548-8700 x 2266 (voice)
(508) 457-2310 (FAX)
dtwichell@usgs.gov
Downloadable Data
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.
| Data format: | 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 <data set name>.shp.xml. An ASCII version of the metadata file. A browse graphic showing the data layer coverage and extent (optional). in format SHP (version 3.3) ESRI polyline shapefile Size: 0.078 |
|---|---|
| Network links: |
<http://pubs.usgs.gov/of/2005/1071/data/seismic/1997/nav/g97_1mnline.zip> |
| Media you can order: |
DVD-ROM
(Density 4.75
Gbytes)
(format UDF)
|
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.
(508) 548-8700 x 2266 (voice)
(508) 457-2310 (FAX)
dtwichell@usgs.gov
