Investigation of (Alluvial and Karstic) Groundwater Residence Time in Pol-e-Zahab Study Area Using Spatiotemporal Variations of Isotopic Composition (δ 2H, δ 18O)

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MOHAMMADZADEH H.; AMIRI V.

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Journal: IRAN-WATER RESOURCES RESEARCH Year:2019 | Volume:15 | Issue:1 Page(s): 327-340

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Title

Investigation of (Alluvial and Karstic) Groundwater Residence Time in Pol-e-Zahab Study Area Using Spatiotemporal Variations of Isotopic Composition (δ 2H, δ 18O)

Author(s)

MOHAMMADZADEH H. | AMIRI V. | Issue Writer Certificate

Keywords

Oxygen-18Q1

DeuteriumQ1

Isotopic Meteoric Water LineQ1

KarstQ1

Residence TimeQ1

SarpolezahabQ1

Abstract

Based on this research, the range of average isotopic values in Polezahab precipitations have been obtained between-2. 9‰ and-6. 6 ‰ for δ 18O and between-14. 4 ‰ and-31. 6‰ for δ 2H. The Isotopic Meteoric Water Line obtained for the study area (δ 2H = 6. 6*δ 18O + 12. 1) represented high Deuterium excess (dexcess = 12. 1‰ ) and the high values of rainwater d-excess for Sarpolezahab, Qasr-e Shirin and Kerend (8. 7‰ to 20. 9‰ ) weather stations confirming the impact of Mediterranean vapor mass. The average isotopic compositions for groundwater (alluvial and Karst) ranged between-5. 3 ‰ and-6. 8 ‰ and between-29. 2 ‰ and-36. 6 ‰ for δ 18O and δ 2H, respectively. The isotopic composition of Karst water in Sarpolezahab with little seasonal variations indicated sufficient time for mixing of infiltrated water with water in phreatic zone and long groundwater Residence Time within formation. The least seasonal variations in the isotopic composition can be seen in the largest Karstic springs of the region, including Srabgarm, Ghaleshahin, Gharebolagh and Ryjab springs. Therefore, the water from these springs has the greatest Residence Time within formation and in turn has high relative age. Marab spring has less Residence Time and low relative age of water due to more Karstic development and fast movement of water.

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APA: Copy

MOHAMMADZADEH, H., & AMIRI, V.. (2019). Investigation of (Alluvial and Karstic) Groundwater Residence Time in Pol-e-Zahab Study Area Using Spatiotemporal Variations of Isotopic Composition (δ 2H, δ 18O). IRAN-WATER RESOURCES RESEARCH, 15(1 ), 327-340. SID. https://sid.ir/paper/100049/en

Vancouver: Copy

MOHAMMADZADEH H., AMIRI V.. Investigation of (Alluvial and Karstic) Groundwater Residence Time in Pol-e-Zahab Study Area Using Spatiotemporal Variations of Isotopic Composition (δ 2H, δ 18O). IRAN-WATER RESOURCES RESEARCH[Internet]. 2019;15(1 ):327-340. Available from: https://sid.ir/paper/100049/en

IEEE: Copy

H. MOHAMMADZADEH, and V. AMIRI, “Investigation of (Alluvial and Karstic) Groundwater Residence Time in Pol-e-Zahab Study Area Using Spatiotemporal Variations of Isotopic Composition (δ 2H, δ 18O),” IRAN-WATER RESOURCES RESEARCH, vol. 15, no. 1 , pp. 327–340, 2019, [Online]. Available: https://sid.ir/paper/100049/en

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