PNG images of each seismic profile were generated in order to incorporate images of the seismic data into Geographic Information System (GIS) projects and data archives utilizing HTML. These PNG images represent approximately 253 km of chirp seismic data collected with the EdgeTech 424 in Sept. 2010. This format is universal and yields an easily browseable pictorial view of the seismic profiles. Each profile image is hotlinked to its corresponding trackline navigation contained within a polyline shapefile ('2010-003-FA_Chirp424_tracklines.shp'), and even 500 shot-point locations are available in a point shapefile ('2010-003-FA_Chirp424_500sht.shp). All of these data are available in an ESRI ArcMap project, as well as separate .zip archives on this digital data DVD archive (http://pubs.usgs.gov/of/2011/1184/GIS_catalog/).
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 originator of the dataset.
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:||WinZip (version 14.5) files contains compressed images of processed seismic-reflection profiles as well as associated metadata. in format PNG Size: 316|
|Media you can order:||DVD-ROM (Density 4.75 Gbytes) (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 PNG image viewing software.