亚洲粉尘释放的研究进展

我国北方沙漠、黄土高原、青藏高原是亚州粉尘释放的关键区域。进一步的元素示踪研究表明,我国西部和北部沙漠是亚洲粉尘和黄土高原黄土的主要源区;太平洋地区和格陵兰地区粉尘的源区为东亚地区。近地面风和高空西风带是亚洲粉尘传输的主要途径。北太平洋粉尘沉积和格陵兰冰芯粉尘记录对比表明,亚洲粉尘的产生、搬运和沉积在这些记录中既表现出一致性,也存在某些差异,显示了搬运过程、沉积过程以及区域性因素对粉尘记录的影响。

Research Progress of Dust Emission in Asia

North desert in China,the Loess Plateau,the Qinghai-Xizang Plateau are key areas of Asian dust.The further elemental tracer system showed that west desert and north desert in China are main source area of Asian dust and the Loess Plateau.The near-surface winds systems and the westerlies systems have long been regarded as the dominant wind regimes for dust transportation in central Asia.The dust records of the sediments of North Pacific and Greenland GISP2 icecore were compared and discussed.It was found that some records are consistent and some records are different,which represented that the transport,sedimentation,and regional or local situations would affect the dust records.