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  3. Marine Geophysical Data Collected to Support Methane Seep Research Along the U.S. Atlantic Continental Shelf Break and Upper Continental Slope Between the Baltimore and Keller Canyons During U.S. Geological Survey Field Activities 2017-001-FA and 2017-002-FA
  4. Multibeam echo sounder - GeoTIFF images for processed Reson 7160 seafloor backscatter data collected during USGS field activities 2017-001-FA and 2017-002-FA

Multibeam echo sounder - GeoTIFF images for processed Reson 7160 seafloor backscatter data collected during USGS field activities 2017-001-FA and 2017-002-FA

Dates

Publication Date
Start Date
2017-05-09
End Date
2017-09-06

Citation

Baldwin, W.E., Moore, E.M., Worley, C.R., Nichols, A.R., and Ruppel, C.D., 2020, Marine geophysical data collected to support methane seep research along the U.S. Atlantic continental shelf break and upper continental slope between the Baltimore and Keller Canyons during U.S. Geological Survey Field Activities 2017-001-FA and 2017-002-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P9Y1MSTN.

Summary

In spring and summer 2017, the U.S. Geological Survey’s Gas Hydrates Project conducted two cruises aboard the research vessel Hugh R. Sharp to explore the geology, chemistry, ecology, physics, and oceanography of sea-floor methane seeps and water column gas plumes on the northern U.S. Atlantic margin between the Baltimore and Keller Canyons. Split-beam and multibeam echo sounders and a chirp subbottom profiler were deployed during the cruises to map water column backscatter, sea-floor bathymetry and backscatter, and subsurface stratigraphy associated with known and undiscovered sea-floor methane seeps. The first cruise, known as the Interagency Mission for Methane Research on Seafloor Seeps and designated as field activity 2017-001-FA, [...]

Contacts

Contact :
Wayne E Baldwin
Originator :
Wayne E Baldwin, Eric Moore, Charles R Worley, Alexander R Nichols, Carolyn Ruppel
Principal Investigator :
Carolyn Ruppel
USGS Program :
Coastal and Marine Hazards and Resources Program
Data Owner :
Woods Hole Coastal and Marine Science Center
USGS Mission Area :
Energy and Minerals
Distributor :
U.S. Geological Survey - ScienceBase

Attached Files

Click on title to download individual files attached to this item.

2017-001-FA_2017-002-FA_7160Backscatter_browse.jpg
“Example MBES backscatter imagery from around Keller Canyon.” 		thumbnail 291.91 KB image/jpeg
2017-001-FA_2017-002-FA_7160Backscatter_meta.xml
Original FGDC Metadata
View 		30.93 KB application/fgdc+xml
Extension: 2017-001-FA_2017-002-FA_Reson7160Backscatter_BetweenWashingtonAndAccomacCanyons_10m.zip
2017-001-FA_2017-002-FA_Reson7160Backscatter_BetweenWashingtonAndAccomacCanyons_10m.tiff
“8-bit Geotiff of multibeam backscatter between Washington and Accomac Canyons.” 		1.39 MB
Extension: 2017-002-FA_Reson7160Backscatter_AroundKellerCanyon_10m.zip
2017-002-FA_Reson7160Backscatter_AroundKellerCanyon_10m.tiff
“8-bit Geotiff of multibeam backscatter around Keller Canyon.” 		947.89 KB
Extension: 2017-002-FA_Reson7160Backscatter_AroundNorfolkCanyon_10m.zip
2017-002-FA_Reson7160Backscatter_AroundNorfolkCanyon_10m.tiff
“8-bit Geotiff of multibeam backscatter around Norfolk Canyon.” 		1.23 MB

Purpose

These GeoTIFF images represent the processed Reson 7160 multibeam echo sounder seafloor backscatter data collected by the U.S. Geological Survey during USGS field activities 2017-001-FA and 2017-002-FA along the U.S. Atlantic continental shelf break and upper slope between Accomac and Keller Canyons. The data depict seafloor bathymetry and backscatter associated with shelf-edge, submarine canyon, and upper slope environments in which seafloor methane seeps have been identified. The data are intended to be used in conjunction with other geophysical, ROV dive imagery, and geologic sample data to investigate sea-floor morphology and geologic framework associated with sites of methane seepage.
Example MBES backscatter imagery from around Keller Canyon.
Example MBES backscatter imagery from around Keller Canyon.

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