尘埃：末次盛冰期水文循环的一种诊断依据。

Dust: a diagnostic of the hydrologic cycle during the last glacial maximum.

作者信息

Yung Y L, Lee T, Wang C H, Shieh Y T

机构信息

Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena 91125, USA.

出版信息

Science. 1996 Feb 16;271(5251):962-3. doi: 10.1126/science.271.5251.962.

DOI:10.1126/science.271.5251.962

PMID:11536732

Abstract

Dust concentrations in ice of the last glacial maximum (LGM) are high in ice cores from Greenland and Antarctica. The magnitude of the enhancements can be explained if the strength of the hydrologic cycle during the LGM was about half of that at present. This notion is consistent with a large decrease (5 degrees Celsius) in ocean temperature during the LGM, as recently deduced from measurements of strontium and calcium in corals.

摘要

在格陵兰岛和南极洲的冰芯中，末次盛冰期（LGM）冰层中的尘埃浓度很高。如果末次盛冰期水文循环的强度约为目前的一半，那么这种增强的幅度就可以得到解释。这一观点与末次盛冰期海洋温度大幅下降（5摄氏度）相一致，这是最近根据对珊瑚中锶和钙的测量推断出来的。