Mathematics – Logic
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3609605j&link_type=abstract
Geophysical Research Letters, Volume 36, Issue 9, CiteID L09605
Mathematics
Logic
Oceanography: Physical: Overflows, Oceanography: Biological And Chemical: Chemical Tracers, Oceanography: General: Water Masses, Oceanography: Physical: Hydrography And Tracers
Scientific paper
This study evaluates the presence of intermediate water from the Greenland Sea in the Iceland Basin deduced from the observed excess of the tracer sulphur hexafluoride (SF6), released in the central Greenland Sea in 1996. The large tracer release experiment has served a unique opportunity to follow the spread of Greenland Sea intermediate water to the adjacent basins of the Nordic Seas and to the areas bordering this region. In the present study, using data from May-June 2001, the released tracer was detected at the sill in the Faroe Bank Channel and at several locations in the Iceland Basin of the North Atlantic, just downstream the sill and southeast of Iceland. The estimated excess of the released tracer at the Icelandic slope combined with reported values of the volume flow at this location suggest an annual transport rate of approximately 1.4 kg excess SF6. The results suggest an upper transit time from the central Greenland Sea to the area southeast of Iceland of approximately 4 years.
Jeansson Emil
Johannessen Truls
Kasajima Yoshie
Messias Marie-José
Olsson Anders K.
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