4th International Virtual Congress (IVC-2017).  International E-publication: Publish Projects, Dissertation, Theses, Books, Souvenir, Conference Proceeding with ISBN.  International E-Bulletin: Information/News regarding: Academics and Research

Geospatial analysis of shoreline changes along the Pondicherry and Vedaranyam coast, east coast of Tamil Nadu, India

Author Affiliations

  • 1Department of Earth Sciences, Annamalai University, Tamil Nadu, India
  • 2Department of Earth Sciences, Annamalai University, Tamil Nadu, India
  • 3Department of Earth Sciences, Annamalai University, Tamil Nadu, India
  • 4Department of Earth Sciences, Annamalai University, Tamil Nadu, India

Int. Res. J. Earth Sci., Volume 5, Issue (3), Pages 1-10, April,25 (2017)

Abstract

Shoreline change study was carried out for the 243km long stretch of Pondicherry and Vedaranyam coast. IRS-1C Liss-III (2012), STRM (2000) Satellite images and Survey of India toposheets for the years 1970 input dataset. A field survey was also carried out using GPS instrument for 2014. One method i.e. Linear Regression Rate (LRR), were working to calculate shoreline change rate for 1970 to2012. While Linear Regression Rate method is used to work out the Long-term analysis for 1970-2012. Totally 45 transects were generated with 50m spacing and the length of each transect was 200m. From the Long-term analysis, the overall erosion change was -2.80 m/yr and accretion 1.88 m/yr during the period of 1970 to 2012. From the analysis, it clearly shows that the assessment of shoreline change rates showed a trend of shoreline erosion and accretion. Most of the beach underwent erosion while some part of the beach accretion through the study period. The observed patterns of the erosion and accretion along the central Tamil Nadu coast resulted from both natural and human impacts. Most of the shoreline was exposed to natural shoreline phenomena such as waves, tides and periodic storm surges apart from the coastal tectonics activities.

References

  1. Pethick J. (1984)., An Introduction to Coastal Geomorphology., E-Published London: Edward Arnold, viii, 260p. ISBN: 0713163917, 9780713163919.
  2. Nayak S. (2002)., Use of satellite data in coastal mapping., Res. Indian Cartographer, 22, 147-156.
  3. Li Ron., Di K. and Ma R. (2001)., A comparative study of shoreline mapping techniques., The Fourth International Symposium on Computer Mapping and GIS for Coastal Zone Management, Halifax, Nova Scotia, Canada, 18th -20th June. Chapter-3, 53-60.
  4. Church J.A., Huybrechts P., Kuhn M., Lambeck K., Nhuan M.T., Qin D., Woodworth P.L. and Gregory J.M. (2001)., Changes in sea level., Published for the Intergovernmental Panel on Climate Change, Cambridge University Press, Cambridge, ISBN 0521-80767-0. Pp 639-694.
  5. Church J.A., White N.J., Coleman R., Lambeck K. and Mitrovica J.X. (2004)., Estimates of the regional distribution of sea level rise over the 19502000 period., Journal of climate, 17(13), 2609-2625. Pages: http://dx.doi.org/10.1175/1520-0442(2004)017<2609:EOTRDO>2.0.CO;2.
  6. Holgate S.J. and Woodworth P.L. (2004)., Evidence for enhanced coastal sea level rise during the 1990s., Geophys. Res., 31(7), L07305, doi: 10.1029/2004GL019626.
  7. Church J.A. and White N.J. (2006)., A 20th century acceleration in global sea-level rise., Geophysics. Res., 33(1), 33:L10602, doi: 10.1029/2005GL024826.
  8. Rosenzweig Cynthia, Casassa Gino, Karoly David J., Imeson Anton, Liu Chunzhen, Menzel Annette, Rawlins Samuel, Root Terry L., Seguin Bernard, Tryjanowski Piotr and Hanson C.E. (2007)., Assessment of observed changes and responses in natural and managed systems., Published for the Intergovernmental Panel on Climate Change, Cambridge University Press, Cambridge, ISBN 978 0521 880107. 79-131.
  9. Das P.K. and Radhakrishna M. (1993)., Trends and the pole tide in Indian tide gauge records., Proc. Ind. Acad. Sci., (Earth Planet. Sci.), 102(1), 175-183. DOI: 10.1007/BF02839189.
  10. Johnson Douglas W. (1919)., Shore Processes and Shoreline Development., Publisher New York, John Wiley & Sons, Inc. 533-551.
  11. Shepard Francis P. (1937)., Revised Classification of Marine Shorelines., J. Geology, 45(6), 602-624.