Deuterium excess in an East Antarctic ice core suggests higher relative humidity at the oceanic surface during the last glacial maximum
International audience A continuous deuterium excess profile (d = δD − 8δ18O) was obtained from the Dome C ice core spanning ∼ 32,000 yr. It exhibits significant variations over this period. In particular, d was 4.5‰ lower around 18,000 yr BP than over the past 7,500 yr, interpreted as reflecting hi...
Published in: | Nature |
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Main Authors: | , , |
Other Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
1982
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Subjects: | |
Online Access: | https://hal.archives-ouvertes.fr/hal-03482836 https://doi.org/10.1038/299688a0 |
Summary: | International audience A continuous deuterium excess profile (d = δD − 8δ18O) was obtained from the Dome C ice core spanning ∼ 32,000 yr. It exhibits significant variations over this period. In particular, d was 4.5‰ lower around 18,000 yr BP than over the past 7,500 yr, interpreted as reflecting higher relative humidity (estimated ∼90%) over the oceanic areas providing moisture for Antarctic precipitation. |
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