Localizing Ground Water Potential Zones in Parts of Karst Pabdeh Anticline, Zagros Mountain, SouthWest Iran using Geospatial Techniques

要旨

The Pabdeh anticline belongs to the Zagros Mountains in the southwest Iran. This area is exposed in the karst region of Iran. Remote sensing and GIS are rapidly increasing role in the field of hydrology and water resources development. The Landsat ETM -7 data with path/row 167/038 dated September 2002 were used in conjunction to digital topographic maps in scale 1:25000 within GIS environment to study the development of ground water in the main watersheds of the Pabdeh. The area has been visually and digitally interpreted to delineate DEM, drainage network, drainage basin, karst landforms, lineaments and lithology for the development of ground water and favorable areas for exploration. Image elements are used during visual and digital interpretation. Extensive field works have been attempted using global positioning system (GPS) to collect water samples and to emphasis image interpretation. Water samples were chemically analyzed. The study shows that the ground water is controlled by geomorphology, chemical properties of water, lineament analysis, lithology and topography. The integration and combination of these parameters in geographic information system (GIS) environment reveals that the thick layer of alluvial, Asmari dolomite and limestone formation in the study area is suitable for ground water development. The study shows 10 suitable locations as potential zone. This study also shows the advantages of remote sensing and GIS techniques for Karst and water resources study. The study also shows the advantages of digital elevation model (DEM) in ground water study.