1977年,美国波多黎各大学地质系M.T.Moussa提出了一种新的计算沉积物粒度参数方法,这是一种简化了的计算沉积物粒度分布一阶矩(数学期望,沉积学上称平均粒径)、二阶矩(标准偏差)的方法。按照常规的统计方法计算沉积物粒度分布的参数,首先要取既 In 1977, MT Moussa, Department of Geology, University of Puerto Rico, USA, proposed a new method for calculating sediment grain size parameters, which is a simplified first-moment calculation of sediment grain size distribution (mathematical expectation, sedimentology, mean grain size) , Second moment (standard deviation) method. Calculate the parameters of sediment particle size distribution according to the conventional statistical methods, we must first take both