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Geosciences 2016, 6(2), 20; doi:10.3390/geosciences6020020

Seismic Hazard Analysis along Koyna Dam Area, Western Maharashtra, India: A Contribution of Remote Sensing and GIS

1
Institute of Applied Geosciences, Technische Universität Berlin (TUB), Ernst-Reuter-Platz 1, Berlin 10587, Germany
2
Department of Geography, Sangamner College, Sangamner 422605, India
3
Indian Institute of Geomagnetism, New Panvel, Navi Mumbai 410218, India
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Carlos Alves
Received: 14 December 2015 / Revised: 17 March 2016 / Accepted: 21 March 2016 / Published: 7 April 2016
(This article belongs to the Special Issue Geoscience of the Built Environment 2016 Edition)
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Abstract

The Koyna-Warna area in Maharashtra, Western India, is one of the world’s best examples of reservoir-induced seismicity. The occurrence of earthquakes in the vicinity of Koyna Dam (Shivaji Sagar Lake) started since 1962, soon after the initiation of water impoundment. To understand the tectonics and seismicity of the region, recent Landsat 8 images and Sentinel radar data were evaluated in GIS, as well as SRTM and ASTER Digital Elevation Model data (DEM) and the DEM-derived morphometric maps. Geophysical and climate data were also included in the GIS database. The analysis of satellite data contributed towards understanding the tectonic framework of the Koyna reservoir area by visual lineament analysis. Thus, Landsat 8 and Sentinel radar data brought out the structural pattern and made visible larger fault zones. The detailed lineament analysis detected areas, presumed to have rocks of relatively higher permeability, supporting intrusion and infiltration of surface water. The resulting maps of weighted overlay procedures derived from causal morphometric factors that influence the susceptibility to ground motion revealed areas with higher, medium and lower susceptibility to soil amplification.
Keywords: Koyna reservoir; remote sensing; GIS; lineament analysis; seismicity Koyna reservoir; remote sensing; GIS; lineament analysis; seismicity
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Theilen-Willige, B.; Aher, S.P.; Gawali, P.B.; Venkata, L.B. Seismic Hazard Analysis along Koyna Dam Area, Western Maharashtra, India: A Contribution of Remote Sensing and GIS. Geosciences 2016, 6, 20.

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