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Comparison Between Grain Size Data by Laser and Pipette-sieve Methods for Tidal Flat Sediments on Jiangsu Coast
Author(s): 
Pages: 46-53
Year: Issue:  1
Journal: ACTA SEDIMENTOLOGICA SINICA

Keyword:  沉积物粒度分析激光粒度仪移液管-筛析法粒度参数换算江苏海岸;
Abstract: 激光粒度仪的广泛应用带来了与历史数据的对比问题,因此需要建立激光粒度仪与早期分析结果之间的关系.根据江苏海岸潮滩沉积物样品的激光粒度仪和移液管-筛析法分析,对粒度参数、粒度组分等进行了对比,对两种方法的差异进行了分析.结果表明,对于江苏潮滩沉积物粒度参数中平均粒径的激光粒度仪与移液管-筛析分析结果之间有良好的线性关系;筛分法测得的粗颗粒物质较激光法偏少,而移液管法法测得的细颗粒物质较激光法偏多;将样品分类之后再进行两种方法所获粒度参数的回归分析,相关性得以提高,说明不同粒度组成的沉积物对分析结果的对比有不同的影响.两种方法之间的换算关系不仅与研究区域有关,而且与沉积物本身的粒度组成有关.
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