عوامل موثر در ظهور چشمه هاي حوضه ي آبريز دشت ايذه

Assessment of Factors Influencing Occurrence of Izeh Plain Watershed Springs

The Izeh watershed plain with considerable limestone units is located in Zagros folded territory. The Asmari limestone is the most significant water bearing formation in Izeh area and various springs are occurring in this karstic formation. In this investigation the effective factors governing development of the springs such as stratigaphy, structure and topography had been assessed and in this regard geology and structural evaluation including: folds, faults and fractures with use of remote sensing and GIS abilities had been carried out. The achieved results indicate that a promising correlation exists between springs location and the distance from fractures, and similarly a promising correlation is noticed between spring occurrence and fractures frequency. Water temperature and its seasonal fluctuation reflecting diffuse- fracture and diffuse flow systems. The assembled data is also depicting relation between density of fractures and saturation index, seasonal variation of their temperature was emphasizing on diffuse and diffuse-fracture