Investigating land subsidence due to groundwater over-exploitation in Kerdi-Shirazi plain, Hormozgan Province
Over-exploitation of the groundwater resources causes many environmental hazards among which land subsidence is more important. The main aim of this study is to evaluate the effect of groundwater level drawdown on land subsidence and fissure occurrence in the Kerdi- Shirazi plain, Hormozgan Province...
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| Format: | Article |
| Language: | fas |
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University of Sistan and Baluchestan
2019-12-01
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| Series: | مخاطرات محیط طبیعی |
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| Online Access: | https://jneh.usb.ac.ir/article_4696_e926ff583f938fbbd59b8a664b53a172.pdf |
| _version_ | 1797805201251368960 |
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| author | Seyedeh Mohadeseh Mousavi Hadi Jafari Ali Akbar Momeni Jahangir Sepehri |
| author_facet | Seyedeh Mohadeseh Mousavi Hadi Jafari Ali Akbar Momeni Jahangir Sepehri |
| author_sort | Seyedeh Mohadeseh Mousavi |
| collection | DOAJ |
| description | Over-exploitation of the groundwater resources causes many environmental hazards among which land subsidence is more important. The main aim of this study is to evaluate the effect of groundwater level drawdown on land subsidence and fissure occurrence in the Kerdi- Shirazi plain, Hormozgan Province. For this reason, the groundwater level changes and distribution of the surface and subsurface sediments in the plain were investigated. Water level data from piezometers during the last 16 years from 1999 to 2015 indicate cumulative drawdown of about 40.6 m with an average annual declining rate of about 2.2 m. The groundwater level drawdown caused considerable stress loading on the aquifer forming sediments, resulted in compaction and settlement of aquifer materials. Consequently, a large fissure with a length of about 567.6 meters appeared at the northwest part of the plain in 1394. The results of this study indicate that two main factors including groundwater level drop down and changes in the thickness of the fine-grained clay layer caused unequal subsidence, creation of the tensile stress, and consequently occurrences of the fissure. Based on these factors, hazard map of fissure occurrence due to land subsidence was prepared for the plain with three categories including the high, moderate and low hazard areas. |
| first_indexed | 2024-03-13T05:48:28Z |
| format | Article |
| id | doaj.art-0efcd65283ec4a17a4087747966a290a |
| institution | Directory Open Access Journal |
| issn | 2676-4377 2676-4385 |
| language | fas |
| last_indexed | 2024-03-13T05:48:28Z |
| publishDate | 2019-12-01 |
| publisher | University of Sistan and Baluchestan |
| record_format | Article |
| series | مخاطرات محیط طبیعی |
| spelling | doaj.art-0efcd65283ec4a17a4087747966a290a2023-06-13T19:55:24ZfasUniversity of Sistan and Baluchestanمخاطرات محیط طبیعی2676-43772676-43852019-12-018229511010.22111/jneh.2019.26537.14434696Investigating land subsidence due to groundwater over-exploitation in Kerdi-Shirazi plain, Hormozgan ProvinceSeyedeh Mohadeseh Mousavi0Hadi Jafari1Ali Akbar Momeni2Jahangir Sepehri3Former MSc. Student of Hydrogeology, Faculty of Earth Sciences, Shahrood University of Technology, Iran.Assistant Professor of Hydrogeology, Faculty of Earth Sciences, Shahrood University of Technology, Iran.Assistant Professor of Engineering Geology, Faculty of Earth Sciences, Shahrood University of Technology, Iran.Water Resources Expert in Hormozgan Regional Water Authority, Iran.Over-exploitation of the groundwater resources causes many environmental hazards among which land subsidence is more important. The main aim of this study is to evaluate the effect of groundwater level drawdown on land subsidence and fissure occurrence in the Kerdi- Shirazi plain, Hormozgan Province. For this reason, the groundwater level changes and distribution of the surface and subsurface sediments in the plain were investigated. Water level data from piezometers during the last 16 years from 1999 to 2015 indicate cumulative drawdown of about 40.6 m with an average annual declining rate of about 2.2 m. The groundwater level drawdown caused considerable stress loading on the aquifer forming sediments, resulted in compaction and settlement of aquifer materials. Consequently, a large fissure with a length of about 567.6 meters appeared at the northwest part of the plain in 1394. The results of this study indicate that two main factors including groundwater level drop down and changes in the thickness of the fine-grained clay layer caused unequal subsidence, creation of the tensile stress, and consequently occurrences of the fissure. Based on these factors, hazard map of fissure occurrence due to land subsidence was prepared for the plain with three categories including the high, moderate and low hazard areas.https://jneh.usb.ac.ir/article_4696_e926ff583f938fbbd59b8a664b53a172.pdfenvironmental hazardsgroundwater level drawdownland subsidencekerdi- shirazi |
| spellingShingle | Seyedeh Mohadeseh Mousavi Hadi Jafari Ali Akbar Momeni Jahangir Sepehri Investigating land subsidence due to groundwater over-exploitation in Kerdi-Shirazi plain, Hormozgan Province مخاطرات محیط طبیعی environmental hazards groundwater level drawdown land subsidence kerdi- shirazi |
| title | Investigating land subsidence due to groundwater over-exploitation in Kerdi-Shirazi plain, Hormozgan Province |
| title_full | Investigating land subsidence due to groundwater over-exploitation in Kerdi-Shirazi plain, Hormozgan Province |
| title_fullStr | Investigating land subsidence due to groundwater over-exploitation in Kerdi-Shirazi plain, Hormozgan Province |
| title_full_unstemmed | Investigating land subsidence due to groundwater over-exploitation in Kerdi-Shirazi plain, Hormozgan Province |
| title_short | Investigating land subsidence due to groundwater over-exploitation in Kerdi-Shirazi plain, Hormozgan Province |
| title_sort | investigating land subsidence due to groundwater over exploitation in kerdi shirazi plain hormozgan province |
| topic | environmental hazards groundwater level drawdown land subsidence kerdi- shirazi |
| url | https://jneh.usb.ac.ir/article_4696_e926ff583f938fbbd59b8a664b53a172.pdf |
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