Assessment of the Land Subsidence Crisis and the Advent of Salt Water in the Minab Plain Aquifer

Document Type : Research Article

Authors

1 Master of Hydrogeology, Rey Ab Consulting Engineers Company

2 PhD in Hydrogeology, Rey Ab Consulting Engineers Company

Abstract

In this research, based on the status of groundwater level in the region during the statistical period of 30 years (1365-1395), as well as field studies and drilling three borehole, study of the status of sediments in place and the chemical analysis of samples taken from the boreholes, the status of subsidence and Penetration of salt water in Minab Plain has been studied. The study of the status of groundwater level in the area indicates that the water level drop in this aquifer has intensified since 1380, and  it has fallen an average of about 46 centimeters in a year. The drop in water level in the aquifer has caused the aquifer level to be lower than the sea level, and practically water flows from the sea to the aquifer. Geotechnical studies in the area show that in addition to the drop of water surface, presence of inflammable and soluble sediments in the area has increased the severity of subsidence complications in the plain surface. Finally, the area is classified into three general sections in terms of risk of subsidence. In the primary part of the aquifer, subsidence is often in the type of alluvial layers condensed, in the central part, the subsidence is often in the form of a pit and a crack, and in the end section of aquifer probability of subsidence is low. In general, this aquifer is at the same time faced with the phenomenon of subsidence and the advent of salt water and requires proper planning to prevent the destruction of the aquifer.

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Main Subjects

References

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Iranian journal of Ecohydrology
Volume 6, Issue 1
April 2019
Pages 223-238

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History

  • Receive Date: 08 December 2018
  • Revise Date: 30 January 2019
  • Accept Date: 30 January 2019
  • First Publish Date: 21 March 2019
  • Publish Date: 21 March 2019

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