Holocene climate evolution of the Ugii Nuur basin,Mongolia |
| |
Authors: | Wolfgang Schwanghart Brigitta Schütt Michael Walther |
| |
Institution: | [1]Department of Environmental Sciences, University of Basel, Basel, Switzerland [2]Institute of Geographical Sciences, Freie Universitat Berlin, Berlin, Germany [3]Mongolian Landscape Research Centre, National University of Mongolia, Ulaanbataar, Mongolia |
| |
Abstract: | In order to evaluate the Holocene palaeoenvironmental evolution of the Ugii Nuur basin,
central Mongolia, investigations on chemical and mineralogical properties of lacustrine sediments
were carried out on a 630 cm sediment core from lake Ugii Nuur. The interpretation of the record is
based on a principal component analysis (PCA) of the elemental composition of the samples. The
results show that lacustrine deposition started at 10.6 kyr BP. Low lake level conditions were
identified during the Early Holocene (10.6--7.9 kyr BP). The Mid Holocene (7.9--4.2 kyr BP) was
characterized by generally higher lake levels and thus higher moisture supply, but it experienced
strong climatic fluctuations. Arid conditions prevailed from 4.2--2.8 kyr BP and were followed by a
stable, more humid phase until today. |
| |
Keywords: | lake sediments palaeoclimate Central Asia Mongolia Holocene |
本文献已被 CNKI 维普 万方数据 SpringerLink 等数据库收录! |
| 点击此处可从《大气科学进展》浏览原始摘要信息 |
| 点击此处可从《大气科学进展》下载免费的PDF全文 |
|