Other ID: none
Organization(s): USGS, Woods Hole Coastal and Marine Science Center
Funding Program(s): USGS GAS HYDRATES (LQ000FP)
Principal Investigator(s): Carolyn Ruppel
Affiliate Investigator(s): John Kessler, University of Rochester
Information Specialist(s): Carolyn Ruppel
Data Type(s): Location-Elevation: Navigation, Seismics: Sub Bottom Profiler, Sonar: Water column reflectivity, Environmental Data: CTD, Sonar: Multibeam
Scientific Purpose/Goals: Water column/seafloor imaging and CTDs to constrain impact of methane seepage on seafloor-water column-atmosphere system
Start Port/Location: Lewes, DE
End Port/Location: Lewes, DE
Start Date: 2017-08-25
End Date: 2017-09-06
Equipment Used: POS-MV, Edgetech chirp subbottom profiler 512i, SIMRAD EK60, Reson 7160 (used in WH), CTD 19+ with OBS, PAR, DO, Chl
Information to be Derived: bathymetry, seafloor backscatter, water column backscatter
Summary of Activity and Data Gathered:
Notes: Please reserve the PosMV Wavemaster.
USGS is not lead on this program. We would supply some instrumentation and assistance, but this is largely a CTD program run with the Sharp's native CTD system by John Kessler and his group at Rochester.
Mid-Atlantic outer shelf and upper continental slope, Hatteras to Wilmington Canyons
|North: 39.40542773||South: 35.96220116||West: -74.9048||East: -72.07356771|
Hugh R. Sharp
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.
Joung, D., Ruppel, C.D., Southon, J., Weber, T.S., Kessler, J.K., No Evidence of Atmospheric Emission of Methane from Decomposing Hydrates at Mid Latitudes: Nature Geoscience, .
Kessler, J.D., Ruppel, C.D., Joung, D., Garcia-Tigreros, F., and Leonte, M., 2018, Exploring the Impact of Widespread Seafloor Methane Seepage on Atmospheric Methane Emissions and Ocean Chemistry: Methane Hydrate News, Fire in the Ice, vol. 18, Issue 1, https://www.netl.doe.gov/sites/default/files/publication/MHNews_2018_Summer.pdf.
Leonte, M., Ruppel, C.D., Ruiz-Angelo, A., and 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, v. 125, issue 5, https://doi.org/10.1029/2019JC015989.
|Survey Equipment||Survey Info||Data Type(s)||Data Collected|
|Edgetech chirp subbottom profiler 512i||---||Sub Bottom Profiler|
|SIMRAD EK60||---||Surveys (biological)|
Water column reflectivity
|Reson 7160 (used in WH)||---||Multibeam|
|CTD 19+ with OBS, PAR, DO, Chl||---||CTD|