Meltwater input to the southern ocean during the last glacial maximum
- Weizmann Institute of Science, Rehovot (Israel)
- Columbia Univ., Palisades, NY (United States)
Three records of oxygen isotopes in biogenic silica from deep-sea sediment cores from the Atlantic and Indian sectors of the Southern Ocean reveal the presence of isotopically depleted diatomaceous opal in sediment from the last glacial maximum. This depletion is attributed to the presence of lids of meltwater that mixed with surface water along certain trajectories in the Southern Ocean. An increase in the drainage from Antarctica or extensive northward transport of icebergs are among the main mechanisms that could have produced the increase in meltwater input to the glacial Southern Ocean. Similar isotopic trends were observed in older climatic cycles at the same cores.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 28938
- Journal Information:
- Science, Vol. 266, Issue 5190; Other Information: PBD: 2 Dec 1994
- Country of Publication:
- United States
- Language:
- English
Similar Records
Antarctic ice dynamics and southern ocean surface hydrology during the last glacial maximum
Terrigenous Fe input and biogenic sedimentation in the glacial and interglacial equatorial Pacific Ocean
Isotopic evidence for reduced productivity in the glacial Southern Ocean
Conference
·
Tue Jan 01 00:00:00 EST 1985
· Geol. Soc. Am., Abstr. Programs; (United States)
·
OSTI ID:28938
+4 more
Terrigenous Fe input and biogenic sedimentation in the glacial and interglacial equatorial Pacific Ocean
Journal Article
·
Fri Dec 01 00:00:00 EST 1995
· Global Biogeochemical Cycles
·
OSTI ID:28938
Isotopic evidence for reduced productivity in the glacial Southern Ocean
Journal Article
·
Fri Oct 15 00:00:00 EDT 1993
· Science (Washington, D.C.); (United States)
·
OSTI ID:28938
+1 more