The present-day distribution of subsea permafrost beneath high-latitude continental shelves has implications for sea level rise and climate change since the Last Glacial Maximum (~20,000 years ago). Because permafrost can be spatially associated with gas hydrate (which may be thermodynamically stable within the several hundred meters above and below the base of permafrost), the contemporary distribution of subsea permafrost also has implications for the persistence of permafrost-associated gas hydrate beneath shallow waters at high latitudes, particularly on margins that were not glaciated at the Last Glacial Maximum. On the U.S. Beaufort Sea margin offshore northern Alaska, researchers have sometimes assumed that...
Tags: Alaska,
Arctic,
Barrow Canyon,
Beaufort Sea,
Beaufort Sea Continental Coast and Shelf, All tags...
CMHRP,
Camden Bay,
Climatology,
Coastal/Marine Hazards and Resources Program,
Department of the Interior,
Geophysics,
Harrison Bay,
Marine Geology,
PCMSC,
U.S. Geological Survey,
USGS,
WHCMSC,
Woods Hole Coastal and Marine Science Center,
geoscientificInformation,
marine geology,
marine geophysics,
oceans,
permafrost,
seismic interpretation,
seismic navigation,
seismic profile,
seismic reflection,
seismic reflection methods,
shapefile, Fewer tags
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