Hydrophysics

Hydrophysics

Assessment of underground water resources in western Iran using GRACE and GRACE-FO satellite observations from 2002 to 2021

Document Type : Original Article

Authors
1 Master of Geodesy, Islamic Azad University South Tehran branch. Tehran. Iran
2 Department of Surveying Engineering, Islamic Azad University South Tehran branch, Tehran, Iran
Abstract
The study of temporal changes in local groundwater storage is essential to understand the characteristics and manage the optimal use of these vital resources. Today, the use of GRACE satellite data and then GRACE-FO to estimate the monthly changes of the underground water level are widely used. In this article, using the data of GRACE and GRACE-FO satellites, the monthly changes of the underground water level in the western regions of Iran in the period from 2002 to 2021 have been obtained. The results show a decrease of -1.17±0.15 cm per year in the level of underground water in the western region of Iran, as well as a decrease of -1.28±0.19 cm per year in the total level of water resources, which includes surface water, underground water, water equivalent to snow, soil moisture It was observed in the west of Iran. The precipitation model was also evaluated using TRMM satellite data, which has a correlation of 0.16 with water reserves observed by GRACE and GRACE-FO satellites.
Keywords

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Volume 9, Issue 2 - Serial Number 17
February 2024
Pages 81-88

  • Receive Date 14 August 2024
  • Revise Date 05 October 2024
  • Accept Date 07 October 2024