USGS Coastal and Marine Geology Program

Coastal & Marine Geology Program

Field Activity Details for field activity 2011-001-FA

Other ID: none

Status: Completed

Organization(s): USGS, Woods Hole Coastal and Marine Science Center

Funding Program(s):

Location: offshore shallow Beaufort Sea, Alaska, United States, North America, Arctic Ocean;

Principal Investigator(s): Carolyn Ruppel

Affiliate Investigator(s):

Information Specialist(s): Carolyn Ruppel

Data Type(s): Environmental Data: Conductivity, Environmental Data: Methane, Environmental Data: Temperature, Location-Elevation: Navigation, Sampling: Geology, Seismics: Sparker, Seismics: Sub Bottom Profiler, Sonar: Interferometric, Sonar: Multibeam, Sonar: Single Beam, Visual Identification: Species ID

Scientific Purpose/Goals: Subbottom imaging shallow offshore Beaufort Sea, water column imaging, seafloor imaging, coring, and real-time water sampling with CRDS.

Vehicle(s):

Start Date: 2011-08-01

Start Port/Location: West Dock Prudhoe Bay, AK

End Date: 2011-08-12

End Port/Location: West Dock, Prudhoe Bay, AK

Equipment Used: YSI multiparameter sonde, HYPACK, EdgeTech 424 chirp sub-bottom profiler, Single channel hydrophone, Visual Mammal ID, SWATHplus-M 234 kHz, Cavity Ring-Down Spectroscopy (CRDS), Sparker system, Edgetech Sidescan sonar, Humminbird fishfinder, Alpine Vibracorer

Information to be Derived: Sea floor map;Bathymetric maps;Morphology;

Summary of Activity and Data Gathered: Acquired 178 km of Chirp, sparker, and Swath data and 110 km of geochemical data, including CH4 and CO2 concentrations, salinity/water temp, and weather data

Staff: Laura Brothers, John Pohlman, Charles Worley

Affiliate Staff:
John Kessler
TAMU Casey Moore
Stanford student (WHOI Summer Student Fellow) Katy Sparrow
TAMU

Notes: Cruise dates ~1 through 12 August, with one full port day for equip changeover on 8 August
Project = Natural Gas Hydrates/DOE,

Location Map:

Platform(s):

Publications

Ruppel, C., Brothers, L., Hart, P., and Pohlman, J, 2012, Warming-Driven Dissociation of Gas Hydrates on the Continental Shelf and Upper Continental Slope of the US Beaufort Seas [abs.]: , Arctic Frontiers 2012. Tromso, Norway, January 20, 2012.

Ruppel, C., Brothers, L., Hart, P., Maue, C., Pohlman, J., Kessler, J., Sparrow, K.M., and Worley, C, 2012, Methane Dynamics Associated with Long-Term Climate Change on the Alaskan Beaufort Sea Inner-Shelf: DOE, Fire in the Ice Newsletter, .

Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
YSI multiparameter sonde --- Conductivity
Dissolved Oxygen
ORP
Temperature
pH
HYPACK --- Navigation
EdgeTech 424 chirp sub-bottom profiler --- Sub Bottom Profiler
Single channel hydrophone --- Air Gun / Water Gun
Boomer
Bubble Gun
Sparker
Sub Bottom Profiler
Visual Mammal ID --- Species ID
2011-001-FA-NL-001 ( Marine Mammal Observer report Polar Bear logs Permits obtained )
SWATHplus-M 234 kHz --- Interferometric
Multibeam
Cavity Ring-Down Spectroscopy (CRDS) --- Methane
Sparker system --- Sparker
Edgetech Sidescan sonar ---
Humminbird fishfinder --- Single Beam
Alpine Vibracorer --- Geology