Dust records from varved lacustrine sediments of two neighboring lakes in northeastern China over the last 1400 years

作者：Chu, Guoqiang; Sun, Qing; Zhaoyan, Gu; Rioual, Patrick; Qiang, Liu; Kaijun, Wang; Han, Jingtai; Liu, Jiaqi

来源：Quaternary International, 2009, 194(1-2): 108-118.

DOI：10.1016/j.quaint.2008.08.005

• GANG VOLCANIC FIELD
• ASIAN DUST
• CLIMATE-CHANGE
• NORTH PACIFIC
• LAMINATED SEDIMENTS
• TIBETAN PLATEAU
• STORM PARTICLES
• JILIN PROVINCE
• UNITED-STATES
• MAAR LAKE

Dust storms are natural phenomena, described in Chinese historical documents as early as 1150 BC. These documents provide a way to evaluate proxy data from different natural records. The minerogenic elastic content and grain size from two closed maar lakes located a short distance apart in northeastern China were analyzed. The area is located in the path of dust storms. The minerogenic clastics in the studied maar lakes originate mainly from dust deposition. General variations of the minerogenic elastic content in these two neighboring lakes show a good coincidence with dust concentration in a Tibet ice core and dust events as recorded in historical documents. The minerogenic clastic content in the lake sediments is linked with the climate conditions in the dust source regions and wind strength. Three periods of intensive dust events (AD 1050-1330, AD 1590-1690, and the last 200 years) have been identified during the past 1500 years. The recent increasing pattern of clastic content could be linked to human activity in the dust source regions. Significantly, most of the Medieval Warm Period (MWP) was marked by a high frequency of dust storms.

• 出版日期2009-2-1
• 单位中国科学院地质与地球物理研究所兰州油气资源研究中心; 国家地质实验测试中心; 中国科学院地质与地球物理研究所