JPEG images of each seismic profile were generated in order to incorporate images of the seismic profiles into Geographic Information System (GIS) projects and data archives utilizing HTML. The JPEG images represent approximately 4500 km of EdgeTech SB-512i chirp seismic-reflection profiles collected within Buzzards Bay. Each profile image is hotlinked to its corresponding trackline navigation contained within the Esri polyline shapefile 'BB_SeismicTrackline.shp'. Even 500 shot index markers along the top of the JPEG images correlate to the positions of 500 shot intervals within the Esri point shapefile 'BB_SeismicShot_500.shp'.The trackline and shotpoint shapefiles can be found online at http://pubs.usgs.gov/of/2012/1002/html/appendix1.html
Are there legal restrictions on access or use of the data?
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 as the source of this information.
Neither the U.S. Government, the Department of the Interior, nor the USGS, 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 information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. 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:||Zip-compressed JPEG images and associated metadata for processed EdgeTech SB-512i chirp seismic-reflection profiles collected in Buzzards Bay by the U.S. Geological Survey offshore of Massachusetts in 2009, 2010, and 2011. This also includes associated metadata. This metadata file describes both the uncompressed (approx 1.4GB) and zip-compressed (approx 1.22GB) images. The maximum file size of an individual zip-file is approximately 360MB. Note: The zip files need to be uncompressed and conform to the original directory structure for the hotlinking to work as intended with the provided ArcGIS project. in format JPEG (version Information unavailable from original metadata.) Joint Photographic Experts Group (JPEG) Size: 360|
|Media you can order:||DVD-ROM (Density 4.75 GB) (format UDF)|
Digital copies of these chirp seismic data may also be obtained in the SEG-Y Rev. 1 standard format upon request. The data would be packaged on DVD, and contain the chirp-processed, envelope traces.
These data can be viewed with any JPEG image viewing software. The zip files must be uncompressed in order to view the JPEG images.