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Poster Session 3
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A Study of Ecosystem Development Along Coramantal
Coast of Tamil Nadu Using Remote Sensing Techniques
4.0 Creek Environment
The creeks are comparatively less along Tamil Nadu coast and the analysis of Landsat and Thematic Mapper data of April 1983 and December 1983 shows that the 'creeks are dynamically changing due to the seasonal variations (Fig.3). The study of Ennore and Kovalam creeks are also dynamically changing during the southwest monsoon and suffer excessive sedimentation during this period.
Figure 3 Creek dynamics in Tamilnadu
5.0 Conclusions
It has been found that multidate satellite data analysis could provide detailed information on the coastal zone/aquatic environment. The remote sensing provides an ideal tool
for monitoring of backwaters and creeks and for siting of Jetties at appropriate places. The already exiting Jetties near Kalpakkam and Madras harbour causes excessive sedimentation near the Kovalam creeks and Ennore creeks so, the two proposed Jetties one near Mahabalipuram and another near Kasikovilpuppm will deflect the littoral current and will cause erosion near the mouth of creeks and promote regular inflow and outflow of sea water. In the Pulicat backwater, the mouth is silted much and construction of Jetties below the month or breaking the sand bunds by construction of break waters to destroy the deposited sand during the non monsoon period will ensure regular flow of sea water as backwaters.
The Indian marine fish catch in the past ten years has fluctuated between 1.444 to 1.779 million tonnes and as much as 90% of this catch is realised from the continental shelf area. The fish catch can be improved through efforts in the deeper oceanic areas and through aquaculture development in coastal areas. Remote sensing can play a vital role in both these areas. The SST charts being generated form NOAA-AVHRR data analysis provides information on potential zones for fishing. The coastal landuse maps generated form satellite data are found to assist in site selection for aquaculture development.
Reference
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Durariraj. S., (1988). Application of remote data for costal zone mapping - A case study of the part of east coast of Tamil Nadu, M.Tech. Thesis, Anna University, Madras, p.138.
- Parulekar, A.H., S.N. Harkantra and Z.A. Ansari, 1982. Indian J.Mar.Sci., 11,pp.107-114.
- Ramasamy, S.M., D. Kumaran Raju, T.Balasubramanian, S. Prabhu, (1991). Remote sensing and costal environment of Tamil Nadu, presented in ISRS Symp. on Remote Sensing and Environment at Anna University, Madras (In Press).
- Sambasiva Rao, M., (1987). Influence of coastal process along with the modern delta front of Godavari in Andhara Pradesh, Jour. Geol. society of India, Vo.29, pp. 339-404.
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