Grain size analysis of surface fluvial sediments in rivers in Kelantan, Malaysia

Wan Hanna Melini Wan Mohtar, and Siti Aminah Bassa, and Mojtaba Porhemmat, (2017) Grain size analysis of surface fluvial sediments in rivers in Kelantan, Malaysia. Sains Malaysiana, 46 (5). pp. 685-693. ISSN 0126-6039


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Grain size spectrum and textural parameters for the fluvial sediment bed in seven tropical rivers of Kelantan, Malaysia are presented in this article. The samples were collected from six tributaries to the main Sungai Kelantan spanning approximately 248 km stretch of water streams. Sand or gravel dominated river was identified for each river using the sediment composition analysis. Textural pattern shows complicated profiles of mean size and no consistent decreasing grain size and gradation parameter were observed towards the downstream flow. Most of the samples fall under the category of either very poorly sorted or poorly sorted and has very platykurtic kurtosis distributions. CM diagram (C=one percentile in microns and M = median grain size in microns) suggested that the deposition of fine-grained sediment for samples with median grain size d50 <1 mm are either by rolling, rolling and saltation or saltation and suspension.

Item Type:Article
Keywords:CM diagram; Fluvial sediment; Grain size; Sediment composition analysis; Tropical rivers
Journal:Sains Malaysiana
ID Code:11055
Deposited By: ms aida -
Deposited On:07 Dec 2017 01:20
Last Modified:12 Dec 2017 05:02

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