Analysing Time Series of Land Subsidence in the West of Tehran Province (Shahriar Plain) and its Relation to Groundwater Discharge by InSAR Technique

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Papi Ramin; Attarchi sara; SOLEIMANI MASOOD

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Journal: Geography and Environmental Sustainability Year:2020 | Volume:10 | Issue:34 Page(s): 109-128

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Title

Analysing Time Series of Land Subsidence in the West of Tehran Province (Shahriar Plain) and its Relation to Groundwater Discharge by InSAR Technique

Author(s)

Papi Ramin | Attarchi sara | SOLEIMANI MASOOD | Issue Writer Certificate

Keywords

Land SubsidenceQ1

Interferometric Synthetic Aperture Radar (InSAR)Q1

SBASQ1

Groundwater ChangesQ1

SARQ1

Abstract

Land Subsidence, as one of the natural and geological hazards, can be caused by human activities such as long-term discharge of groundwater and traditional irrigation farming. In the last two decades, climate change and successive droughts, unsustainable management of water resources and overexploitation of groundwater as well as population growth have caused Land Subsidence in Shahriar plain in the west of Tehran province. The present study aims to monitor and estimate Land Subsidence using Interferometric Synthetic Aperture Radar (InSAR) approach. Moreover, it tries to investigate the relationship between groundwater level and subsidence rate. Therefore, the time series of the ENVISAT-ASAR satellite images from 2003 to 2010 were used. The Small BAseline Subset (SBAS) algorithm was applied to analyze the time series of land surface displacement and to generate the mean displacement velocity map. The findings from time series analysis of InSAR data indicate a continuous subsidence occurrence in the agricultural lands of the region. The mean velocity of deformation along the satellite line of sight (LOS) in the time period of study, shows the displacement at an average rate of-10 cm / year and a maximum rate of-27 cm / year in the Shahriar plain in the west of Tehran province. Over this time period, groundwater level decreases about 0. 5 to 1. 5 m in the aquifer storage at 12 observational wells located in the study area. The overall correlation between changes in groundwater level and subsidence rate was estimated circa 89. 45 percent, which indicates a strong relationship between subsidence and groundwater exploitation in the region.

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APA: Copy

Papi, Ramin, Attarchi, sara, & SOLEIMANI, MASOOD. (2020). Analysing Time Series of Land Subsidence in the West of Tehran Province (Shahriar Plain) and its Relation to Groundwater Discharge by InSAR Technique. GEOGRAPHY AND ENVIRONMENTAL SUSTAINABILITY, 10(34 ), 109-128. SID. https://sid.ir/paper/365046/en

Vancouver: Copy

Papi Ramin, Attarchi sara, SOLEIMANI MASOOD. Analysing Time Series of Land Subsidence in the West of Tehran Province (Shahriar Plain) and its Relation to Groundwater Discharge by InSAR Technique. GEOGRAPHY AND ENVIRONMENTAL SUSTAINABILITY[Internet]. 2020;10(34 ):109-128. Available from: https://sid.ir/paper/365046/en

IEEE: Copy

Ramin Papi, sara Attarchi, and MASOOD SOLEIMANI, “Analysing Time Series of Land Subsidence in the West of Tehran Province (Shahriar Plain) and its Relation to Groundwater Discharge by InSAR Technique,” GEOGRAPHY AND ENVIRONMENTAL SUSTAINABILITY, vol. 10, no. 34 , pp. 109–128, 2020, [Online]. Available: https://sid.ir/paper/365046/en

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