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Quantitative estimation of sediment erosion and accretion processes in a micro-tidal coast

International Journal of Sediment Research 2014年第2期29卷 218-231页

作者： G.Udhaba DORA V.Sanil KUMAR P.VINAYARAJ C.S.PHILIP G.JOHNSON CSIR-National Institute of Oceanography GoaIndia.Senior Research Fellow.Mr. CSIR-National Institute of Oceanography GoaIndia.Senior Principal Scientist.Dr. CSIR-National Institute of Oceanography GoaIndia.Project Assistant.Mr.

Spatio-temporal cross-shore profiles and textural characteristics are the key parameters for understanding dynamics of the inter-tidal sedimentary *** study describes short-term dynamics of the inter-tidal sedimentary environment at beaches along the micro-tidal *** a correlation is estimated in cross-shore morphodynamics and textural characteristics of surface *** sedimentary environment is examined for a complete annual cycle using monthly collected cross-shore profiles and sediment *** Devbag beach(northern side) and Ravindranath Tagore beach(southern side) at the Kali river mouth,Karwar,west coast of India are characterized from extremely gentle to average slope,and broadly composed of unimodal *** sedimentary environment is significantly composed of textures having fine to medium sand,well to moderately sorted,fine to coarse skewed,and platykurtic to leptokurtic in *** the annual cycle a reversal pattern is observed between the two adjacent beaches,where a slower rate of sediment accretion is observed at Devbag beach while Ravindranath Tagore beach exhibited *** beach dynamics along with the propagation of south-west(SW) and south-west-west(SWW) waves towards the coast significantly exhibit a dominance of northward sediment transport with the existence of a northerly alongshore *** addition,the study reveals that an eroded beach may not be significantly identified composed of coarse *** poor correlation in morpho-sedimentary characteristics reveals the prediction of grain characteristics based on beach profile and vice-versa is unrealistic.

关键词： cross shore profile Beach volume Grain size distribution Textural characteristics wave Kali estuary

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