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An Attempt to Recover a Paleomonsoon Signal in the Chinese Loess Plateau Using Anisotropy of Magnetic Susceptibility
Frontiers in Earth Science ( IF 2.9 ) Pub Date : 2020-10-15 , DOI: 10.3389/feart.2020.569072
Feng Xian , Rui Zhang

The paleowind direction in the Chinese Loess Plateau (CLP) was studied using anisotropy of magnetic susceptibility (AMS) data. Magnetic fabrics were examined for the last glacial loess (L1) and last inter-glacial paleosol (S1) in the southern and central CLP along a present day precipitation zone of 600 mm per year. Statistical analyses of AMS ellipsoid orientations indicate that strong rainwater events may cause random distributions in the maximum axis of the AMS azimuth, but with no deviation in the vertical plane for the average minimum axis. As high rainfall can distort paleowind determinations, it is challenging to conduct paleowind studies on the southern CLP - a topography with high precipitation density.



中文翻译:

利用磁化率各向异性恢复黄土高原古季风信号的尝试

利用磁化率(AMS)数据的各向异性研究了黄土高原(CLP)的古风向。沿目前每年600 mm的降水带,对CLP南部和中部的最后一个冰川黄土(L 1)和最后一个冰川间古土壤(S 1)进行了磁性织物检查。对AMS椭球定向的统计分析表明,强雨水事件可能会导致AMS方位角最大轴上的随机分布,但平均最小轴在垂直平面上没有偏差。由于高降雨会扭曲古风的确定,因此对南部CLP(具有高降水密度的地形)进行古风研究具有挑战性。

更新日期:2020-11-13
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