Long term shoreline oscillation and changes of Cauvery delta coastline inferred from satellite imageries |
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| Authors: | R Sathyanarayan Sridhar K Elangovan P K Suresh |
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| Institution: | 1.Department of Civil Engineering,Coimbatore Institute of Technology,Coimbatore,India;2.Department of Civil Engineering,PSG College of Technology,Coimbatore,India;3.Institute of Hydraulics and Hydrology,Poondi,India |
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| Abstract: | Coastal zone is highly volatile ecosystem which is always in adjustments. Loss of shore line will cause severe impact on human
life and as well as their properties. Remote sensing is a reliable technique to study the historical shoreline changes. Therefore
in this paper long term shoreline oscillations of Cauvery delta shorelines at Poompuhar, Tharangambadi and Nagapattinam were
studied using satellite imageries and the same was physically observed at the above three locations with the help of reference
pillars and compared mutually. It was observed that the shoreline at Poompuhar is under accretion at the rate of 1.79m/ year
and other shoreline stretches at Tharangambadi and Nagapattinam were under erosion at 0.4888m/ year and 0.4985m/ year respectively.
It was also observed that the remote sensing study qualitatively matches with the physical observation for all the three coastal
stretches of the study area. |
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