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

Dates

Publication Date: 2020
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, [...]

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, was conducted from May 4 to May 11, 2017, and acquired geophysical data to support remotely operated vehicle exploration of seep sites using the Global Explorer, which is operated by Oceaneering International, Inc. Geophysical operations during cruise 2017-002-FA from August 25 to September 6, 2017, were also focused on mapping water column methane plumes, sea-floor seep sites, and subseafloor strata, but primarily supported conductivity, temperature, and depth instrument deployment, surface-water methane-concentration mapping, and water-sampling operations as part of a collaborative study with the University of Rochester of the effect of methane seepage on ocean water biogeochemistry. The National Oceanic and Atmospheric Administration’s Office of Ocean Exploration and Research partially sponsored cruise 2017-001-FA, and the U.S. Department of Energy partially sponsored both cruises.

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

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2017-001-FA_2017-002-FA_7160Bathymetry_meta.xml Original FGDC Metadata	View	30.52 KB	application/fgdc+xml
2017-001-FA_2017-002-FA_7160Bathymetry_browse.jpg “Example MBES bathymetry imagery from around Keller Canyon.”		291.04 KB	image/jpeg

Extension: 2017-001-FA_2017-002-FA_Reson7160Bathymetry_BetweenWashingtonAndAccomacCanyons_25m.zip
2017-001-FA_2017-002-FA_Reson7160Bathymetry_BetweenWashingtonAndAccomacCanyons_25m.tiff “32-bit Geotiff of multibeam bathymetry between Washington and Accomac Canyons.”		627.69 KB
2017-001-FA_2017-002-FA_Reson7160Bathymetry_BetweenWashingtonAndAccomacCanyons_25m.tiff-ColorRamp.sld “Styled layer descriptor file.”		2 KB

Extension: 2017-002-FA_Reson7160Bathymetry_AroundKellerCanyon_25m.zip
2017-002-FA_Reson7160Bathymetry_AroundKellerCanyon_25m.tiff “32-bit Geotiff of multibeam bathymetry around Keller Canyon.”		406.74 KB
2017-002-FA_Reson7160Bathymetry_AroundKellerCanyon_25m.tiff-ColorRamp.sld “Styled layer descriptor file.”		2 KB

Extension: 2017-002-FA_Reson7160Bathymetry_AroundNorfolkCanyon_25m.zip
2017-002-FA_Reson7160Bathymetry_AroundNorfolkCanyon_25m.tiff “32-bit Geotiff of multibeam bathymetry around Norfolk Canyon.”		529.51 KB
2017-002-FA_Reson7160Bathymetry_AroundNorfolkCanyon_25m.tiff-ColorRamp.sld “Styled layer descriptor file.”		2 KB

Related External Resources

Type: Related Primary Publication

Demopoulos, A., McClain-Counts, J., Bourque, J., Prouty, N., Smith, B., Brooke, S.D., Ross, S., and Ruppel, C., 2019, Examination of Bathymodiolus childressi nutritional sources, isotopic niches, and food-web linkages at two seeps in the US Atlantic margin using stable isotope analysis and mixing models: Deep Sea Research Part I, 148, 53-66.	https://doi.org/10.1016/j.dsr.2019.04.002
Leonte, M., Ruppel, C. D., Ruiz‐Angulo, A., & Kessler, J. D. (2020). Surface methane concentrations along the Mid‐Atlantic Bight driven by aerobic subsurface production rather than seaﬂoor gas seeps: Journal of Geophysical Research: Oceans, vol. 125.	https://doi.org/10.1029/2019JC015989
Ruppel, C., Demopoulos, A., and Prouty, N., 2018, Exploring US Mid-Atlantic Margin Methane Seeps: IMMeRSS, May 2017: Supplement to Oceanography, 31(1), p. 93.	https://doi.org/10.5670/oceanog.2018.supplement.01

Purpose

These GeoTIFF grids represent the processed Reson 7160 multibeam echo sounder seafloor bathymetry 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 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.

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

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