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Groundwater assessment using satellite data: study of a semi-arid area in Iran

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Abstract

In the present research, changes in Ground Water Storage (GWS) in a certain period of time in a semi-arid area were investigated by employing GRACE (The Gravity Recovery and Climate Experiment) dataset and GLDAS (Global Land Data Assimilation System) hydrological model. The time-series analysis of the studied area indicates declining trend of Terrestrial Water Storage (TWS) and GWS with mean depletion rates of 1.13–1.39 cm/year and 0.84–1.06 cm/year, respectively. However, parameters of soil moisture, precipitation, and Snow Water Equivalent (SWE) do not show continuously declining trend. Results of this research prove that since about 9 years, groundwater extraction has continued, indiscriminately. Also, the average per capita water per person in plain has been decreased 100 m3 according to the JPL and CSR products, 79 m3 according to the GFZ product and 86 m3 based on Mascon and Mascon-CRI filtered products. Moreover, it is evident from the results that remote sensing is an effective tool to interpolate the observed regional groundwater data of wells and to improve estimations of GWS.

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All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by EB, AJA and HS. The first draft of the manuscript was written by EB and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Ehsan Behnamtalab.

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Behnamtalab, E., Jafari Ani, A. & Sarkardeh, H. Groundwater assessment using satellite data: study of a semi-arid area in Iran. Sustain. Water Resour. Manag. 10, 48 (2024). https://doi.org/10.1007/s40899-023-01029-4

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  • DOI: https://doi.org/10.1007/s40899-023-01029-4

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