Granulometric Characteristics of Estuary bar Sediments of the Gosthani River, Bhimunipatnam,East Coast ofIndia
Journal Title: International Journal of Engineering and Science Invention - Year 2018, Vol 7, Issue 5
Abstract
The granulometric characteristics of the sediments of estuary bars of the Gostani River (lat. 17. 56' – 17.54' N: long. 83 26'- 83 28' E) have been carried out. A total of forty three samples were collected along the river profile from upper estuary and lower estuary. The upper estuary bar indicates that the sediments possess a coarse sand (0.77 Ø); moderately sorted (0.79 Ø); negatively skewed (-0.17 Ø) and leptokurtic (1.21 Ø) and lower estuary bar sediments are medium sand (1.73 Ø), moderately sorted (0.70 Ø); symmetrical skewed (0.07 Ø) and mesokurtic (1.03Ø). Frequency distribution curves and scatter plots clearly established that the sediments are of unimodal nature and are having medium sand in lower estuary bar and coarse sand with weakly bimodal nature in upper estuary bar. The sediments are deposited under tractive current conditions with dominant rolling mechanism in upper estuary bar sediments and graded and bottom suspension in lower estuary bar. Costal wave dynamics and seasonal shifting of estuary mouth causes the variations in the texture of the sediments.
Authors and Affiliations
T. Karuna Karudu, M. Jagannadha Rao
Keywords
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