Processed multi-channel seismic reflection images from the U.S. Mid-Atlantic margin (EN555, 2015)

This data set is bitmap (BMP) images of 30 high-resolution multichannel seismic reflection lines acquired by the U.S. Geological Survey Woods Hole Coastal and Marine Science Center in 2015 on R/V Endeavor, cruise EN555, with a towed sparker source. The bitmap images were created in SeiSee and have CDP on the x-axis and two-way travel time (TWTT) in ms on the y-axis. Profiles are plotted in the orientation that they were acquired. The images have no enhancement on the processed data other than constant gain to make reflections visible. The seismic data were collected on lines oriented mostly down the continental slope from 100 to 2000 meters water depth or parallel to the continental shelf. The source was the USGS Woods Hole Applied Acoustics Delta Sparker attached to a surface-towed sled. The source was operated at 2.4 kJ and usually fired at 5 s intervals. Seismic reflections were recorded using the 72-channel Geometrics GeoEel liquid filled streamer (nine 50-m-long active sections; total length 555 m) with group spacing of 6.25 m and depth control using birds. Individual seismic shot data (SEG-D data and GPS coordinates) were recorded with Geometrics acquisition seismic software with 0.5 ms sampling and record length of 4.5 s. The entire 4.5 s record is plotted in each bitmap file. Detailed acquisition and processing parameters are described in the associated documents. Funding was provided to the USGS Gas Hydrates Project through DOE NETL interagency agreements DE-FE000291 and DE-FE0005806.