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.


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

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:



Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
YSI multiparameter sonde --- Conductivity
Dissolved Oxygen
HYPACK --- Navigation
EdgeTech 424 chirp sub-bottom profiler --- Sub Bottom Profiler
Single channel hydrophone --- Air Gun / Water Gun
Bubble Gun
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
Cavity Ring-Down Spectroscopy (CRDS) --- Methane
Sparker system --- Sparker
Edgetech Sidescan sonar ---
Humminbird fishfinder --- Single Beam
Alpine Vibracorer --- Geology