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Littoral drift sources and sinks along the Indian coast

IR@NIO: CSIR-National Institute Of Oceanography, Goa

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Field Value
 
Creator Chandramohan, P.
Jena, B.K.
SanilKumar, V.
 
Date 2006-08-28T06:16:33Z
2006-08-28T06:16:33Z
2001
 
Identifier Current Science, vol.81(3), 292-297pp.
http://drs.nio.org/drs/handle/2264/270
 
Description Numerous theoretical and field studies have been carried out to quantify the volume and direction of littoral sediment transport along the Indian coast. Nevertheless, very little effort has been made to identify the sources for the littoral transport, which feed to the nearshore transport mechanism and on sinks, wherein the continuous movement of the littoral sediment breaks and deposits over a considerable period of time. Rivers are the major source for the littoral drift and the annual discharge of sediments to sea along the Indian coast is about 1.2 × 10<sup>12</sup> kg. The construction of inland dams, irrigation barrages, have considerably reduced the sediment load brought to the sea. Due to the fall in the influx of sediments and concentration of wave energy, many coastal segments experience erosion. In order to identify the extent of the significance of the major sinks for the sediment deposition along the Indian coast, a study was undertaken to evaluate the long-term sediment deposition in Gulf of Kachchh, Gulf of Khambhat, Gulf of Mannar, Palk Bay and Sandheads. The study shows an average yearly deposition of sediments to a thickness of 0.025 m at Gulf of Kachchh, 0.03 m at Gulf of Khambhat, 0.01 m at Gulf of Mannar, 0.006 m at Palk Bay and 0.003 m at Sandheads. The depositional features identified in the present study have been noticed as occurrences of spits, shoals and the progradation of coastline.
 
Format 93209 bytes
application/pdf
 
Language en
 
Publisher Indian Academy of Sciences
 
Subject Indian coast
Gulf of Kachchh
Gulf of Khambhat
Gulf of Mannar
 
Title Littoral drift sources and sinks along the Indian coast
 
Type Article