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

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 (...

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Bibliographic Details
Published in:Science
Main Authors: Ledbetter, Michael T., Johnson, David A.
Format: Article in Journal/Newspaper
Language:English
Published: American Association for the Advancement of Science (AAAS) 1976
Subjects:
Antarctic
Antarc*
Online Access:https://doi.org/10.1126/science.194.4267.837
https://www.science.org/doi/pdf/10.1126/science.194.4267.837
Description
Summary: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.

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