A Study on Land Subsidence in West of Tehran Using Sentinel-1 Images and Persistent Scatterers Interferometry

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MAGHSOUDI Y.; AMANI R.; AHMADI H.

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Journal: IRAN-WATER RESOURCES RESEARCH Year:2019 | Volume:15 | Issue:1 Page(s): 299-313

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Title

A Study on Land Subsidence in West of Tehran Using Sentinel-1 Images and Persistent Scatterers Interferometry

Author(s)

MAGHSOUDI Y. | AMANI R. | AHMADI H. | Issue Writer Certificate

Keywords

Radar InterferometryQ1

Permanent ScatterersQ1

SubsidenceQ1

Sentinel-1Q1

Abstract

During the past decades, Tehran metropolitan has suffered from land Subsidence crisis. Prolonged droughts and excessive exploitation of groundwater for agricultural and industrial purposes have reduced the level of wá ter in aquifers and reduced the density of the subsurface soil layers. This study focused on monitoring the displacement of the ground in west of Tehran which is affected by Subsidence of Shahriyar and Tehran plains. A time series of 30 Sentinel-1 images were processed by Radar Interferometry technic based on the persistent scatterers in two years. Average annual displacement map was prepared for the region under study. The result indicated 15 centimeters of displacement in southern part of the study area where it reaches Shahriyar and Tehran plains. However, displacement is not limited to plains and nonurban areas. It has also scattered through industrial and urban areas. In industrial and residential areas, cumulative displacement of 9 to 13 centimeter was recorded in two years especially in Fath Highway which experienced more than 4 centimeters of displacement each year. Relative evaluation of results was made based on the data gathered from underpass 35. Considering the small difference in the estimates obtained from tracks 28 and 35, these areas had little Horizontal displacement. Displacement vector was high in vertical movement. Vertical displacement was computed for ascending and descending tracks in the second study region and was verified by the data from a GPS station.

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APA: Copy

MAGHSOUDI, Y., AMANI, R., & AHMADI, H.. (2019). A Study on Land Subsidence in West of Tehran Using Sentinel-1 Images and Persistent Scatterers Interferometry. IRAN-WATER RESOURCES RESEARCH, 15(1 ), 299-313. SID. https://sid.ir/paper/100057/en

Vancouver: Copy

MAGHSOUDI Y., AMANI R., AHMADI H.. A Study on Land Subsidence in West of Tehran Using Sentinel-1 Images and Persistent Scatterers Interferometry. IRAN-WATER RESOURCES RESEARCH[Internet]. 2019;15(1 ):299-313. Available from: https://sid.ir/paper/100057/en

IEEE: Copy

Y. MAGHSOUDI, R. AMANI, and H. AHMADI, “A Study on Land Subsidence in West of Tehran Using Sentinel-1 Images and Persistent Scatterers Interferometry,” IRAN-WATER RESOURCES RESEARCH, vol. 15, no. 1 , pp. 299–313, 2019, [Online]. Available: https://sid.ir/paper/100057/en

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