作者
NYIRABUHORO Pascaline, MUGERWA Theophile, NDIKUMANA Jean de Dieu, MUNGANYINKA Jeanne Pauline, NDAYISHIMIYE Jean Claude, UWAMUNGU Placide
发表日期
2015/11
期刊
International Journal of Engineering Research and General Science
卷号
3
期号
6
页码范围
478-492
简介
Textural analysis carried out for the sediments of the Nayakkankuppam coast revealed that inlet part is dominated by fine sand, central part is dominated by medium sand and outlet part is dominated by coarse sand. The grain size parameters namely Mean size (MZ), standard deviation (σ1), skewness (Ski), and kurtosis (KG) of percentile values derived from the cumulative curves following Folk and Ward and the moment technique based upon grouped data are most widely used. It is observed that in Nayakkankuppam, most of the samples were fallen in the moderately well sorted to well sorted nature. Skewness measures asymmetry of frequency distribution and marks the position of mean with respect to median. The fine skewed nature of the sediments clearly exhibits sediment input from various sources of tributaries. The finely skewed nature is also implies a low velocity than normal, this skewness data indicated that the sediments are nearly symmetrical to fine skewed, the median class of the sediments dominate almost throughout their distribution. The kurtosis data indicated Mesokurtic to platykurtic. The CM pattern divulged that the sediments were transported bottom suspension and rolling as well as graded suspension. The comparison with the tractive current diagram, the berm samples fall in beach environment, the remaining samples fall in beach and tractive current environment.
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N Pascaline, M Theophile, NJ de Dieu, MJ Pauline… - International Journal of Engineering Research and …, 2015