Groundwater level changes effect on the subsidence in Semnan plain

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HADDAD A.; KHORASANI E.

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Journal: GEOSCIENCES Year:2019 | Volume:28 | Issue:112 Page(s): 181-190

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Title

Groundwater level changes effect on the subsidence in Semnan plain

Author(s)

HADDAD A. | KHORASANI E. | Issue Writer Certificate

Keywords

Decline in ground water levelsQ1

Semnan plainQ1

Ground subsidenceQ1

Water hydrograph chartQ1

Satellite imagery interferometryQ1

Abstract

Semnan plain is located in the northern margin of Iran’ s central desert and has a dry to semi-arid climate. In recent decades, rapid population growth, increasing Industrial areas and water demand has led to excessive extraction of groundwater resources and as a result, the depth of access to the surface of the water will intensify. This reason has made the Semnan plain one of the most important areas of the country in view of water resources scarcity and its consequences. In this research, to estimate the Ground subsidencein the period of 26/03/2008 to 23/8/2003 by using Satellite Image Interferometry (InSAR) method, the maximum subsidence of 133 mm in the city of Semnan and its surroundings Has been confirmed. In order to identify the factors affecting the subsidence of a part of Semnan plain, underground water depth fluctuations along with a hydrograph diagram of the results of 15 observational wells were investigated, indicating a continuous decline in water level during the years 2003-2009, so that the minimum Growth rate of groundwater depth of study area is 22 cm / year. What results from adaptation of subsidence areas and water table water level drop curves in this study is that exploitation of groundwater resources more than aquifer nutrition increased effective stress and consequently high consolidation of sediments which caused this factor Semnan plain due to geotechnical properties of the aquifer are susceptible to subsidence. In other words, subsidence zones over, or near, the groundwater level decrease areas. Therefore, water resources management should be given more and more attention by Politicans, who makes policy, in order to keep up with Sustainable development of agriculture and industry to prevent the ongoing process of land subsidence.

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APA: Copy

HADDAD, A., & KHORASANI, E.. (2019). Groundwater level changes effect on the subsidence in Semnan plain. GEOSCIENCES, 28(112 ), 181-190. SID. https://sid.ir/paper/32147/en

Vancouver: Copy

HADDAD A., KHORASANI E.. Groundwater level changes effect on the subsidence in Semnan plain. GEOSCIENCES[Internet]. 2019;28(112 ):181-190. Available from: https://sid.ir/paper/32147/en

IEEE: Copy

A. HADDAD, and E. KHORASANI, “Groundwater level changes effect on the subsidence in Semnan plain,” GEOSCIENCES, vol. 28, no. 112 , pp. 181–190, 2019, [Online]. Available: https://sid.ir/paper/32147/en

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