Volume 9, Issue 36 (Volume 9; Number 36; Summer 2019)                   2019, 9(36): 62-73 | Back to browse issues page

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ganjaeian H, ghasemi A, ebrahimi A, asadpor Z. Evaluation of subsidence rate of Hamadan-Bahar plain using SBAS time series method. Arid Regions Geographic Studies. 2019; 9 (36) :62-73
URL: http://journals.hsu.ac.ir/jarhs/article-1-1515-en.html
, h.ganjaeian@ut.ac.ir
Abstract:   (3684 Views)
The Hamedan-Bahar plain has experienced a severe drop in groundwater levels during recent salinities, which has caused the region to be exposed to subsidence hazards. Accordingly, in this study firstly, using groundwater level information in the study area, the groundwater level in the study area was evaluated using 5 piezometers in the study area. Then, using the Sentinel 1 satellite imagery (2016/01/11 to 2017/12/19) and the SBAS time series method, the vertical displacement of the region is evaluated. Groundwater assessment results indicate that the range of studies in recent years has seen an increasing trend in groundwater levels, with water levels in some wells reaching up to 2 m / year, which has caused There has been a sharp drop in water levels in that area. Also, the results of the evaluation of the displacement rate of the area indicate that this area has been subsidence by 133/2 mm over the 2 year period. In addition, the results of correlation between annual water level decline and area subsidence indicate that there is a direct relationship between water level decline and area subsidence and the correlation coefficient of ./94 percent.
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Type of Study: Research | Subject: ژئومورفولوژي و سنجش از دور
Received: 17/Oct/19 | Accepted: 26/Apr/20 | Published: 18/May/20

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