Grain Size Analysis of a Growing Sand Bar at Sonadia Island, Bangladesh
- 1 Institute of Marine Sciences and Fisheries, University of Chittagong, Chittagong, Bangladesh.
- 2 Institute of Marine Sciences and Fisheries, University of Chittagong, Chittagong, Bangladesh.
- 3 Institute of Marine Sciences and Fisheries, University of Chittagong, Chittagong, Bangladesh.
- 4 Institute of Marine Sciences and Fisheries, University of Chittagong, Chittagong, Bangladesh.
- 5 Institute of Marine Sciences and Fisheries, University of Chittagong, Chittagong, Bangladesh.
Abstract
Sonadia is one of the most important islands of Bangladesh . South-eastern shore of the island, which is a growing sand bar, has to encounter continuous and rapid morphological changes. So study of the sediment characteristics of this Sand Bar is very important. In the present study , grain size analysis of this Sand Bar has been done on the basis of laboratory analysis. Sediment sample s were collected from 9 (Nine) stations and texture analysis of sediment was completed following a standard procedure of sieve analysis of sand samples. The average value of median (MD), mean (M), standard deviation (s), skewness (SK) and kurtosis (K) of sediment of the Sand Bar of Sonadia Island was 1.93, 1.87, 0.44, 0.11 and 1.88 respectively. Highest median, mean, standard deviation, skewness and kurtosis of Sand Bar of Sonadia Island was 2.98 (Station 2, Lower Shore), 2.68 (Station 1, Lower Shore), 0.83 (Station 1, Middle Shore and Station 2, Lower Shore), 0.65 (Station 2, Lower Shore) and 3.59 (Station 1, Lower Shore) respectively. Lowest median, mean, standard deviation, skewness and kurtosis of Sand Bar of Sonadia Island was 1.42 (Station 9, Middle Shore), 1.45 (Station 9, Middle Shore), 0.30 (Station 5, Lower Shore and Station 8, Lower Shore), 0.04 (Station 5, Upper Shore) and 0.94 (Station 6, Upper Shore) respectively.
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