Physics
Scientific paper
Apr 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28.1615m&link_type=abstract
Geophysical Research Letters, Volume 28, Issue 8, p. 1615-1618
Physics
23
Oceanography: General: Arctic And Antarctic Oceanography, Oceanography: Physical: Hydrography, Oceanography: Physical: Ice Mechanics And Air/Sea/Ice Exchange Processes
Scientific paper
Two hydrographic and δ18O transects across Fram Strait (Aug-Sept 1997, 1998) are used to examine freshwater contributions to the East Greenland Current (EGC). The EGC featured up to ~16% meteoric water in both years, but was made comparatively more saline through the formation of up to ~11 m of sea ice. We derive meteoric water fluxes of ~3680 km3 yr-1 in Aug-Sept 1997, and ~2000 km3yr-1 in Aug-Sept 1998. The 1997 and 1998 data show a long-term mean sea ice flux through Fram Strait around half the long-term mean meteoric water flux. A 1991 δ18O section [Bauch et al., 1995] yielded a very similar ratio. Our 1998 section reveals fresh, low-δ18O water on the East Greenland shelf whose comparatively large volume constitutes a potentially significant contribution to the total freshwater flux through Fram Strait. Such fluxes are important to the regional and global thermohaline circulation; we suggest that efforts towards monitoring both the EGC and East Greenland shelf waters are thus required.
Dennis Paul
Fahrbach Eberhard
Goldson Laura
Heywood Karen
Meredith Michael
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