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首页> 外文期刊>Chinese science bulletin >Distribution characteristics of magnetic susceptibility of the surface sediments in the southern Yellow Sea
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Distribution characteristics of magnetic susceptibility of the surface sediments in the southern Yellow Sea

机译：黄海南部表层沉积物磁化率的分布特征

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摘要

The characteristic distributions of magnetic susceptibility (MS) are analyzed on the basis of susceptibility (SYS). The preliminary results are as follows: first, the distributions clearly correspond to different modern sediment assemblages in the continental sea, which indicates different sediment origins. With the 30 μCGS isoline being taken as demarcation line, the study area can then be divided into section H (high MS value area) and section L (low MS value area). Section H is mainly adjacent to land with two main sources of the Changjiang River and the Huanghe River. Section L is mainly an eddy sediment area, where Yellow Sea Cold Water is entrenched all the year round. The distribution pattern of MS could tell apart strong or weak hydrodynamic conditions and has a close relation to the circulation system in this area. At the areas of the SYS Circumfluent and northern East China Sea (NECS) Circumfluent (weak hydrodynamic), the MS has low values, while in the areas of Coastal Current (strong hydrodynamic), the values are high. At the same time, the oxidizing areas tend to take on higher MS, while the reducing areas have lower one. It seems safe to say that the MS in the continental sea reflects more of the sediment origin and sedimentary environment, which is different from that of loess, lake and surface soil as a climate proxy.
机译：在磁化率（SYS）的基础上分析了磁化率（MS）的特征分布。初步结果如下：首先，其分布明显对应于大陆海不同的现代沉积物组合，这表明了不同的沉积物来源。将30μCGS等值线作为分界线，然后可以将研究区域划分为H部分（MS值高的区域）和L部分（MS值的低区域）。 H区主要毗邻具有长江和黄河两个主要水源的土地。 L区主要是涡流沉积区，全年都有黄海冷水Water绕。 MS的分布模式可以区分强弱水动力条件，并且与该地区的循环系统密切相关。在SYS环流区和东海北部（NECS）环流区（水动力较弱），MS值较低，而在沿海海流（强水力区），MS值较高。同时，氧化区倾向于具有较高的MS，而还原区具有较低的MS。可以肯定地说，大陆海中的MS反映了更多的沉积物来源和沉积环境，这与作为气候代用品的黄土，湖泊和表层土壤不同。

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