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TitleSeabed geohazard constraints to deep water exploration drilling in the canadian Beaufort Sea
AuthorBlasco, S M; Bennett, R; MacKillop, K; Youngblut, S E; Brucker, S T; Blasco, K A
Source37th annual Yellowknive geoscience forum abstracts; by Jackson, V; Palmer, E; Northwest Territories Geoscience Office, Yellowknife Geoscience Forum Abstracts Volume vol. 2009, 2009 p. 4 (Open Access)
Alt SeriesEarth Sciences Sector, Contribution Series 20090234
Meeting37th Annual Yellowknive Geoscience Forum; Yellowknife, NT; CA; November 17 - 19, 2009
ProvinceNorthern offshore region
AreaBeaufort Sea
Subjectsfossil fuels; marine geology; environmental geology; exploration; petroleum exploration; exploration methods; environmental impacts; slope stability; submarine transport
ProgramOffshore Geoscience, Marine Geoscience for Arctic Economic Development
AbstractHydrocarbon exploration in the Canadian Beaufort Sea is shifting from the inner shelf to the outer shelf and upper slope region in water depths of 60 to 1200 m. In response to this change, seabed geohazard research is also moving into deep water. Few data exist in the deep water environment to establish the regional framework of geohazard conditions required for environmental and engineering assessments. In 2009 the Geological Survey of Canada, Canadian Hydrographic Service and University of New Brunswick worked in collaboration with Imperial Oil Limited to collect seabed stability data. Coast Guard vessels Nahidik and Amundsen functioned as the survey platforms. Seabed scouring by ice keels, subsea permafrost, low strength seabed sediments and mud volcanism hazards are common to both shallow and deep water. The deep water introduces additional hazards that need to be investigated. These include slope stability, seabed faulting, seabed sediment mobility and mud diapirism. Geohazard survey technologies used during the field programs included multibeam and sidescan sonars, subbottom profilers, a high resolution multichannel seismic system and sediment corers.