Field Activity 2008-029-FA

Identifier 2008-029-FA
Alternate names 2008-007-PGC; T-29-08-NP
Purpose 1) To determine the timing and cause of submarine slumps at the frontal ridge; 2) to investigate the role of gas hydrate in the mechanisms controlling and responding to submarine slumping; and 3) to determine the potential for fluid and gas venting and formation of gas hydrate in and around the slump sites.
Location Cascadia margin, Vancouver Island, Canada, North Pacific;48.60 deg N 127.04 deg W;Barkley Canyon, Vancouver Island, Canada, North Pacific;48.31 deg N 126.06 deg W;
Summary Acquired pore water and sediment samples for numerous chemical and isotopic analyses to aid in interpreting the cause and history of submarine landslides along the base of the Northern Cascadia Margin and the cycling of methane carbon and higher hydrocarbons at several mid-slope seep sites. About 75% of the pore water samples collected have been analyzed for sulfate and chloride concentration.
Info derived Samples and chemical analysis;
Comments Cruise Report submitted in conjunction with the lead organization, Pacific Geoscience Centre, Geological Survey of Canada. Contact John Pohlman for copy of cruise report. Original Center People field contained: John Pohlman: Lead Geochemist; William Waite: Assistant Geochemist; Peter Bratton: Mobilization/labeling/supply preparation; PJ Bernard: Shipping. Project = Marine Gas Hydrates: Vancouver Island Accretionary Wedge Research, Marine Gas Hydrates: Vancouver Island Accretionary Wedge Research
Platform
John P Tully
Length 225 feet; beam 47 feet; draft 14 feet.
Itinerary
Start Sidney, British Columbia, Canada 2008-07-29
End Sidney, British Columbia, Canada 2008-08-12
Days in the field 15
Bounds
West -127.04
East -126.06
North 48.6
South 48.31

Personnel

Organization
384 Woods Hole Road
Quissett Campus
Woods Hole, MA02543-1598
(508) 548-8700
Principal investigators John Pohlman
Crew members
William F Waite
Scientist, Staff
John Pohlman
Scientist, Staff
Philip J Bernard
Scientist, Staff
Information specialist(s)
John Pohlman
Specialist, Information
Affiliate principal Michael Riedel, McGill University; Ross Haacke, Geological Survey of Canada
Affiliate staff Greg Middleton, Geological Survey of Canada (GSC) (seismic/coring); Steve Taylor, GSC (elec./nav./seismic); Peter Neelands, GSC (nav./coring); Tim Claydon, GSC (elec./seismic); Randy Enkin, GSC (coring phys props.); Lionel Esteban, GSC (coring phys. props.); Ross Haacke, GSC (seismic/coring); Graham Standen, GeoForce (Huntec - seismic); John Pohlman, USGS (coring geochem.); Bill Waite, USGS (coring geochem.); Michael Riedel, McGill University (seismic/coring geochem.); Tark Hamilton, Camosun (coring sedimentology); Angela Schlesinger, GSC/Uvic (seismic); Vivan Wang, McGill University (seismic/coring); Meagan Hogg, Camosun (coring); Kelly Rose, Department Of Energy (coring sedimentology); Laura Lapham, Florida State University (coring geochem.)

Data types and categories

Data category: Geochemical, Imagery, Location-Elevation, Sampling
Data type: Surveys (geochemical), Photo, Navigation, Chemistry, Geology

Equipment used

Equipment Usage description Data types Datasets
GPS (wh) Navigation (no data reported)
Ion Chromatograph; Surveys (geochemical) (no data reported)
Digital camera Photo 1
Gravity corer Geology 1
Pore water sampling Chemistry 1

Datasets

Datasets produced in this activity

Dataset name Equipment Description Dataset contact
2008-029-FA-PH-001 Digital camera Cruise photos: collected and held by project partners, not by WHSC. PARTNER
2008-029-FA-SC-002 Gravity corer Cores: 104 cores collected by various project participants. PARTNER
2008-029-FA-SC-001 Pore water sampling Pore water samples: 1827 samples for various analyses; 747 for John Pohlman and 115 for Bill Winters returned to WHSC. John Pohlman

Publications

Samples collected during this field activity