Iran is a semi-arid to arid country that faces water shortage crisis. Its weather also influenced by various air masses and moisture sources. Therefore, applying accurate stable isotope techniques investigate Iran’s precipitation characteristics developing meteoric lines (MWLs) as an initial step for future hydrology studies vitally important. The aim of this study was determine the MWLs considering dominant Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) model backward...

Bakhtegan–Tashk Lakes (BTL) and Kamjan Marsh, one of the Ramsar sites with an area 1323 km 2, have been shrunk due to groundwater overexploitation, construction two new dams drought. Evaporation BTL water significantly increased potentially toxic metal (PTMs) average total dissolved solids (TDS) from 45000 382000 mg/l. This study focuses on contamination sources 16 PTMs. The sampling include 24 sediments, 2 surface salts, 17 samples Bakhtegan Lake (BL), wells. PTMs were analyzed in Act Lab....

Iran has faced many water shortage crises in the past. Iran’s moisture sources for precipitation were identified by Lagrangian approach using FLEXible PARTicle dispersion model (FLEXPART) v9.0 model. The results demonstrate that receives its from both continental and oceanic sources. During wet season, uptake Arabian Sea, Persian Gulf, Mediterranean Sea is dominant, while during dry role of Red Caspian Gulf intensified. Studying drought conditions comparing 1-month, 6-month, 12-month...

ABSTRACT A field-scale three-dimensional numerical flow and transport model was applied to simulate the fate of benzene, toluene, ethylbenzene, xylenes (BTEX) from six source zones light non-aqueous-phase liquids (LNAPLs). number scenarios were defined evaluate effect natural attenuation enhanced remediation methods on BTEX. Two strategies for cleaning up site: (1) reduction BTEX over entire site down maximum concentration limit (MCL), (2) a level that reduces below MCLs only at nearest...

The gypsum formations in Iran are mainly Upper Red (URF), Gachsaran (GF), and Sachun.The GF is divided into salt (SGF) its non-salt equivalents (NSGF).The conductivity of the spring's water Sachun, URF NSGF below 3500 mS cm 21 , but SGF varies from 2400 to 400,000 .Three different sites, Tangsorkh (NSGF), Ambal Salbiz (SGF), were selected for further studies.The area composed alternating units marlstone gypsum.The hydraulic connections between these broken by marls no sub-aquifer developed...

Iran faces climate disparities due to extreme topographic anomalies, the Caspian Sea and Persian Gulf water bodies, influences from diverse air masses moisture sources, its considerable area. FLEXPART model has been utilized determine main marine continental sources for south-central (Shiraz box) northeastern (Mashhad parts of Iran. The directly influenced drought wet conditions in Shiraz Mashhad boxes during period, while no correlation was observed dry period. In addition local components,...

Abstract The irrigation return-flow coefficient (IRFC) is based on rule of thumb estimations in most aquifers Iran. errors may be significant, and thus misleading for water resources management. We used lysimeters to more accurately predict IRFC. Five wheat barley farms different soil textures, which were irrigated using a border system, plus one with sprinkler selected the installation lysimeters. practices at each farm applied Irrigation return flows (IRF) measured every other day over two...

Eight Coastal aquifers (CA) of Bakhtegan and Tashk lakes (BTL) salt marsh, southern Iran BTL, Wetlands International Importance, have been shrinking due to reduction in surface discharge, groundwater overexploitation, drought. We show that this resulted an increase BTL total dissolved solids (TDS) from 45400 256000 mg/l. To characterize the hydrogeological behavior coastal after shrinkage, major ions, TDS water level were measured along a transect inside BL one aquifers. The spatial...