Publication Date:
2000-02-05
Description:
Concentrations of atmospheric noble gases (neon, argon, krypton, and xenon) dissolved in groundwaters from northern Oman indicate that the average ground temperature during the Late Pleistocene (15,000 to 24,000 years before present) was 6.5 degrees +/- 0.6 degrees C lower than that of today. Stable oxygen and hydrogen isotopic groundwater data show that the origin of atmospheric water vapor changed from a primarily southern, Indian Ocean source during the Late Pleistocene to a dominantly northern, Mediterranean source today. The reduced northern water vapor source is consistent with a drier Last Glacial Maximum through much of northern Africa and Arabia.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weyhenmeyer -- Burns -- Waber -- Aeschbach-Hertig -- Kipfer -- Loosli -- Matter -- New York, N.Y. -- Science. 2000 Feb 4;287(5454):842-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Geology, University of Bern, CH-3012 Bern, Switzerland. Environmental Physics, EAWAG/ETH, CH-8600 Duebendorf, Switzerland. Institute of Physics, University of Bern, CH-3012 Bern, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10657295" target="_blank"〉PubMed〈/a〉
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
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Chemistry and Pharmacology
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Computer Science
,
Medicine
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Natural Sciences in General
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Physics
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