Title of article :
On the distribution of dissolved methane in Davis Strait, North Atlantic Ocean
Author/Authors :
Punshon، نويسنده , , Stephen and Azetsu-Scott، نويسنده , , Kumiko and Lee، نويسنده , , Craig M.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2014
Pages :
6
From page :
20
To page :
25
Abstract :
Depth profiles of dissolved methane were measured along three transects of Davis Strait and the northern Labrador Sea in October 2011. Concentrations ranged from 0.2 nmol L− 1 (6% saturation) in the remarkably methane depleted Baffin Bay Deep Water to 38.8 nmol L− 1 (1057% saturation) in localised subsurface anomalies near the Baffin Island Shelf. These anomalies may be the result of natural gas seepage and this hypothesis is supported by the distribution of potential sea surface oil slicks detected by satellite radar backscatter. In contrast, methane concentrations within the Baffin Island Current 200 km to the south of these anomalies were only slightly above atmospheric equilibrium. Methane was moderately supersaturated in West Greenland Shelf Water (< 200%) with a distribution consistent with a sediment source. These measurements represent the first detailed baseline study of the vertical distribution of dissolved methane in an important Canadian Arctic Archipelago outflow region.
Keywords :
vertical distribution , Methane , Gas seepage , Arctic zone
Journal title :
Marine Chemistry
Serial Year :
2014
Journal title :
Marine Chemistry
Record number :
2255012
Link To Document :
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