In accordance with SO #3423 - The Gulf of America and SO #3424 - Mount McKinley and Landmarks Honoring the Alaskan People, new USGS data releases specific to those named places will utilize the new name Gulf of America and the restored name Mount McKinley. Per USGS practice, historical data will retain the name of the geographic features as they were known at the time the data were originally released.
Data Release
Subbottom and Sidescan Sonar Data Acquired in 2015 From Grand Bay, Mississippi and Alabama
By Stanley D. Locker, Arnell S. Forde, and Christopher G. Smith
USGS, St. Petersburg, Florida
Summary
Grand Bay Alabama and Mississippi were surveyed between May and June 2015, using an Edgetech chirp 424 subbottom profiler and a Klein 3900 sidescan sonar. The objective was to characterize the geologic framework of recent estuarine sediment accumulation in the bay. This data release includes the raw chirp subbottom Society of Exploration Geophysicists (SEG Y) data files, sidescan data files in eXtended Triton Format (XTF), and a processed sidescan sonar mosaic GeoTIFF.
Data
| File Name and Description | Metadata (XML format) | Metadata (text format) | Download File |
|---|---|---|---|
| 2015-315-FA_segy.zip Unprocessed digital chirp subbottom trace data (.sgy) |
GrandBay_2015-315-FA_metadata.xml | GrandBay_2015-315-FA_metadata.txt | 2015-315-FA_segy.zip (2.6 GB) |
| 2015-315-FA_xtf.zip Unprocessed Klein SonarPro xtf data files (.xtf) |
Same as above | Same as above | 2015-315-FA_xtf.zip (9.84 GB*) |
| 2015-315-FA_SSSMosaic.zip Processed sidescan sonar backscatter imagery merged into a mosaic at 30 centimeter pixel resolution. NOTE: Backscatter intensity is represented by a gray-scale pallet with high backscatter intensities as darker grays (.tif, .txt) |
Same as above | Same as above | 2015-315-FA_SSSMosaic.zip (578.4 MB) |
| 2015-315-FA_arc.zip Survey trackline locations (.mxd, .shp, .txt) |
Same as above | Same as above | 2015-315-FA_arc.zip (64.9 MB) |
| Supplemental information | |||
| 2015-315-FA_logs.zip Geophysical logs and vessel configuration diagram (.docx, .jpg) |
Not applicable | Not applicable | 2015-315-FA_logs.zip (80 KB) |
Figure 1. Trackline coverage for chirp and sidescan data acquisition.
Suggested Citation
Locker, S.D., Forde, A.S., and Smith, C.G., 2018, Subbottom and sidescan sonar data acquired in 2015 from Grand Bay, Mississippi and Alabama: U.S. Geological Survey data release, https://doi.org/10.5066/P9374DKQ.