Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

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Modification of a Coastal Environment: Vedaranniyam Wetland, Southeast Coast of India


Affiliations
1 Department of Geology, School of Earth and Atmospheric Sciences, University of Madras, A C College Campus, Chennai - 600 025, India
2 Centro de lnvestigaciones en Ciencias de la Tierra, Universidad Autonoma del Estado de Hidalgo, Ciudad Universitaria, Carretera Pachuca-Tulancingo, Pachuca, Hidalgo, C Postal 42184, Mexico
3 Departrnent of Geology, Anna University, Chennai - 600 025, India
 

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The study of SPOT (1988) and IRS-1C (1998) images along with topographic maps (1928 and 1969-70) indicates that the wetland of Vedaranniyam has undergone significant landform modifications over a period of 70 years (1928-1998). Changes in shape and extent of the Mullippallam and Serattalaikkadu creeks, migrating confluence of stream Koraiyar towards north, development of mangrove vegetation, progradation and retrogradation of shoreline and increasing number of salt pans are determined and quantified. The study shows that fluctuations in the discharge of river flows and sediment loads associated with NE monsoon intensity and human interference through salt pan and agricultural activities are manly responsible for the dynamic changes observed in the area.

Keywords

Coastal Landforms, Fluvial Processes, Human Activity, Remote Sensing, Vedaranniyam Wetland, Tamil Nadu.
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  • Modification of a Coastal Environment: Vedaranniyam Wetland, Southeast Coast of India

Abstract Views: 221  |  PDF Views: 137

Authors

K. Selvaraj
Department of Geology, School of Earth and Atmospheric Sciences, University of Madras, A C College Campus, Chennai - 600 025, India
V. Ram Mohan
Department of Geology, School of Earth and Atmospheric Sciences, University of Madras, A C College Campus, Chennai - 600 025, India
M. P. Jonathan
Centro de lnvestigaciones en Ciencias de la Tierra, Universidad Autonoma del Estado de Hidalgo, Ciudad Universitaria, Carretera Pachuca-Tulancingo, Pachuca, Hidalgo, C Postal 42184, Mexico
S. Srinivasalu
Departrnent of Geology, Anna University, Chennai - 600 025, India

Abstract


The study of SPOT (1988) and IRS-1C (1998) images along with topographic maps (1928 and 1969-70) indicates that the wetland of Vedaranniyam has undergone significant landform modifications over a period of 70 years (1928-1998). Changes in shape and extent of the Mullippallam and Serattalaikkadu creeks, migrating confluence of stream Koraiyar towards north, development of mangrove vegetation, progradation and retrogradation of shoreline and increasing number of salt pans are determined and quantified. The study shows that fluctuations in the discharge of river flows and sediment loads associated with NE monsoon intensity and human interference through salt pan and agricultural activities are manly responsible for the dynamic changes observed in the area.

Keywords


Coastal Landforms, Fluvial Processes, Human Activity, Remote Sensing, Vedaranniyam Wetland, Tamil Nadu.