Field Activity 2010-054-FA

Identifier 2010-054-FA
Purpose 1) Image seafloor. 2) Map top of subsea permafrost in very near shore. 3) Survey for possible methane emissions at distal inferred end of permafrost offshore. 4) Collect data to help constrain whether seaward limit of permafrost is 'real' or related to a lithologic change.
Location centered on Harrison Bay, shallow Beaufort Sea, Alaska, United States, North America, Arctic Ocean;
Summary Transit from Prudhoe Bay West Dock to eastern Harrison Bay; collected seismic data along lines running NE-SW and long tie lines running WNW to ESE until weather turned bad.
Comments Permitting: NEPA CX USGS; NMFS Letter of Concurrence; FWS letter for ESA birds obtained; FWS no ESA needed for fish; FWS MMPA/ESA polar bear consultation underway; Tribal council mtg interaction on 19 June 2010; North Slope Borough permit; discussion started with private sector operator that may be in study area during the survey on a ~70 m vessel. Project = Methane Hydrate - Dept. of Energy, Methane Hydrate - Dept. of Energy
URL
Platform
BOEM Launch 1273
36-ft-long aluminum-hulled research vessel.
Itinerary
Start Prudhoe Bay West Dock, AK 2010-08-03
End Prudhoe Bay West Dock, AK 2010-08-09
Days in the field 6
Bounds
West -153.083
East -149.87549
North 70.97403
South 70.33353

Personnel

Organization
384 Woods Hole Road
Quissett Campus
Woods Hole, MA02543-1598
(508) 548-8700
Principal investigators Carolyn Ruppel
Crew members
Charles R Worley
Scientist, Staff
Information specialist(s)
Carolyn Ruppel
Specialist, Information
Affiliate staff Patrick Hart, USGS-Menlo Park; observer from the community of Nuiqsut

Data types and categories

Data category: Location-Elevation, Seismics, Sonar
Data type: Navigation, Sparker, Sub Bottom Profiler, Sidescan, Single Beam

Equipment used

Equipment Usage description Data types Datasets
EdgeTech 424 chirp sub-bottom profiler Sub Bottom Profiler (no data reported)
Single channel hydrophone Air Gun / Water Gun, Boomer, Bubble Gun, Sparker, Sub Bottom Profiler (no data reported)
Humminbird fishfinder Single Beam (no data reported)
GPS (wh) Navigation (no data reported)
Edgetech DF-1000 sidescan sonar Sidescan (no data reported)
Sparker Sparker (no data reported)

Publications

Samples collected during this field activity