Increased Transport of Antarctic Bottom Water in the Vema Channel During the Last Ice Age

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Science  19 Nov 1976:
Vol. 194, Issue 4267, pp. 837-839
DOI: 10.1126/science.194.4267.837


Particle size analyses of surface sediments in the Vema Channel reveal a spatial variation related to the present hydrography. Similar analyses of sediment deposited during the last ice age (18,000 years before the present) indicate a maximum shallowing of the upper limit of Antarctic Bottom Water (AABW) of about 100 meters, coupled with an increase in velocity, which resulted in an increase in AABW transport.