engleski

Using Stable Isotope Analysis (δD and δ18O) and Tracing Tests to Characterize the Regional Hydrogeological Characteristics of Kazeroon County, Iran

Unpredictable climate changes are affecting water resources, especially in karst arid andsemiarid areas. In such locations, the need for additional sources of water always arises. The papergives insight into hydrogeological characteristics of Kazeroo County and resolves some unknownsaround the catchment area of the springs important for water supply of the wider urban area of thecity of Kazeroon, Iran, by using stable isotope analysis (δD andδ18O) and tracer test. Multiple tracertest and stable isotope analysis were conducted for research purposes. The uranine injected at TaleMilek 1 borehole was detected in the Chenar Shahijan spring in less than 2 and in the Seyed Hosseinspring after 6 days. Small amounts of uranine were detected in the Sasan and Pirsabz springs. Basedon the high apparent flow velocity (approximately 1750–2000 m/day), the underground system has aquick response to the precipitation during dry seasons. The assumed hydraulic connection betweenShahneshin North (Asmari) and Dashtak Northzones has been confirmed by tracer test since the dyeinjected in Northern Asmari Shahneshin anticline appeared in the springs in Dashtak North zone.The results of water stable isotope measurements show that the catchment area of karst springs inthe vicinity of Kazeroo is probably over 2000 m at the area of Shahneshin anticline and is positionedlower than the catchment area of Arjan spring.

stable isotopes ; tracer test ; karst ; arid and semiarid area ; underground water ; Kazeroon ; Iran

nije evidentirano