Mapping Land Subsidence Hazard through InSAR (Case study: Kashmar and Khalil Abad plain)
Measuring of subsidence is often challenging due to the gradual occurrence in large-scale, and advanced measuring techniques are required. The first foresighted consequence of this catastrophic phenomenon is irreversible loss of aquifer reservoir. Subsidence is downward motion of the earth's su...
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Format: | Article |
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Iranian Scientific Association of Desert Management and Control (ISADMC)
2019-08-01
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Series: | مدیریت بیابان |
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Online Access: | http://www.jdmal.ir/article_36526_e28f2bac8363192b26340d1b56ad5258.pdf |
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author | Hamid Kohbanani Mohammad Reza Yazdani Seyed Keyvan Hosseini |
author_facet | Hamid Kohbanani Mohammad Reza Yazdani Seyed Keyvan Hosseini |
author_sort | Hamid Kohbanani |
collection | DOAJ |
description | Measuring of subsidence is often challenging due to the gradual occurrence in large-scale, and advanced measuring techniques are required. The first foresighted consequence of this catastrophic phenomenon is irreversible loss of aquifer reservoir. Subsidence is downward motion of the earth's surface with negligible horizontal vector component. Subsidence is occurring with different rates in many aquifers of the country constantly, because of excessive extraction of groundwater for years which causes lowering of the water table. Increasing the intensity of this phenomenon in recent years requires modern methods of measuring subsidence. InSAR technique can be strongly powerful that can extract vertical component in large extent, especially in areas with insufficient geodetic data. In this study, new Sentinel-1A imagery from 2014 to 2018 were used to examine the subsidence rate in the Kashmar and Khalil Abad plain. According to the high correlation between pair images, basic interferograms was calculated. Then, using SBAS method unnecessary phases were removed. Thereafter, the displacement phase was calculated and converted to the vertical component. Maximum subsidence rate is observed near the southwest suburb of Kashmar city and western part of Khalilabad plain. Results indicate that the Kashmar and Khalilabad plain was encountered maximum of 17 cm downward movement annually. Due to uneven and heterogeneous subsidence, the area has susceptibility for formation of longitudinal cracks. Final map can be used to control and manage water resources and prevent natural hazards and desertification |
first_indexed | 2024-04-10T06:16:08Z |
format | Article |
id | doaj.art-645caf33272b4d92b0be438cb2571a85 |
institution | Directory Open Access Journal |
issn | 2476-3985 2476-3721 |
language | fas |
last_indexed | 2024-04-10T06:16:08Z |
publishDate | 2019-08-01 |
publisher | Iranian Scientific Association of Desert Management and Control (ISADMC) |
record_format | Article |
series | مدیریت بیابان |
spelling | doaj.art-645caf33272b4d92b0be438cb2571a852023-03-02T06:48:53ZfasIranian Scientific Association of Desert Management and Control (ISADMC)مدیریت بیابان2476-39852476-37212019-08-01713657610.22034/jdmal.2019.3652636526Mapping Land Subsidence Hazard through InSAR (Case study: Kashmar and Khalil Abad plain)Hamid Kohbanani0Mohammad Reza Yazdani1Seyed Keyvan Hosseini2Ph.D. Candidate, Combating Desertification, Faculty of Desert Studies, University of Semnan, Semnan, IranAssociate Professor, Faculty of Desert Studies, University of Semnan, Semnan, IranAssistant Professor, Earthquake Research Center, Ferdowsi University of Mashhad, Mashhad, IranMeasuring of subsidence is often challenging due to the gradual occurrence in large-scale, and advanced measuring techniques are required. The first foresighted consequence of this catastrophic phenomenon is irreversible loss of aquifer reservoir. Subsidence is downward motion of the earth's surface with negligible horizontal vector component. Subsidence is occurring with different rates in many aquifers of the country constantly, because of excessive extraction of groundwater for years which causes lowering of the water table. Increasing the intensity of this phenomenon in recent years requires modern methods of measuring subsidence. InSAR technique can be strongly powerful that can extract vertical component in large extent, especially in areas with insufficient geodetic data. In this study, new Sentinel-1A imagery from 2014 to 2018 were used to examine the subsidence rate in the Kashmar and Khalil Abad plain. According to the high correlation between pair images, basic interferograms was calculated. Then, using SBAS method unnecessary phases were removed. Thereafter, the displacement phase was calculated and converted to the vertical component. Maximum subsidence rate is observed near the southwest suburb of Kashmar city and western part of Khalilabad plain. Results indicate that the Kashmar and Khalilabad plain was encountered maximum of 17 cm downward movement annually. Due to uneven and heterogeneous subsidence, the area has susceptibility for formation of longitudinal cracks. Final map can be used to control and manage water resources and prevent natural hazards and desertificationhttp://www.jdmal.ir/article_36526_e28f2bac8363192b26340d1b56ad5258.pdfinterferometrysentinel-1azoningsubsidencesbas method |
spellingShingle | Hamid Kohbanani Mohammad Reza Yazdani Seyed Keyvan Hosseini Mapping Land Subsidence Hazard through InSAR (Case study: Kashmar and Khalil Abad plain) مدیریت بیابان interferometry sentinel-1a zoning subsidence sbas method |
title | Mapping Land Subsidence Hazard through InSAR (Case study: Kashmar and Khalil Abad plain) |
title_full | Mapping Land Subsidence Hazard through InSAR (Case study: Kashmar and Khalil Abad plain) |
title_fullStr | Mapping Land Subsidence Hazard through InSAR (Case study: Kashmar and Khalil Abad plain) |
title_full_unstemmed | Mapping Land Subsidence Hazard through InSAR (Case study: Kashmar and Khalil Abad plain) |
title_short | Mapping Land Subsidence Hazard through InSAR (Case study: Kashmar and Khalil Abad plain) |
title_sort | mapping land subsidence hazard through insar case study kashmar and khalil abad plain |
topic | interferometry sentinel-1a zoning subsidence sbas method |
url | http://www.jdmal.ir/article_36526_e28f2bac8363192b26340d1b56ad5258.pdf |
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