A GIStopology to detect coastal groundwater Potential zones and variation of sea water temperature along west coast of Karnataka
Abstract
Due to increase in atmospheric greenhouse
gases, the coastal water temperature is slightly
increasing with time period. For this coastal sea
water surface temperature (SST) approach, MODIS
has some limitations due to 1km resolution. However,
in this work Landsat thermal bands had used for
calculating SST. The study area of this investigation
comprises coastal zone of Arabian Sea from
Nethravathi to Udupi and the data obtained is
Landsat8 OLI/TIRS imagery. In this paper, we
mainly focussed on identification of potential zones of
ground water in a coastal river basin (Pavanje in
Karnataka state) and variation of SST in coastal
area. Thematic layers like soil, slope, rainfall
distribution, land use/land cover, stream density is
created with assigned weightage which will support
in identification of groundwater potential zones. SST
varies from 22.5 to 41.4 degree Celsius temperature
and groundwater potential zones is extracted by
integrating the thematic layers for the study area.
References
Helder, “Summary of current radiometric
calibration coefficients for Landsat MSS, TM,
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[2] E. N. Tcherepanov, V. A. Zlotnik, and G. M.
Henebry, “Using Landsat thermal imagery
and GIS for identification of groundwater
discharge into shallow groundwaterdominated
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[3] K. R. Preeja, S. Joseph, J. Thomas, and H.
Vijith, “Identification of groundwater
potential zones of a tropical river basin
(Kerala, India) using remote sensing and GIS
techniques,” J. Indian Soc. Remote Sens., vol.
39, no. 1, pp. 83–94, 2011.
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