TN947 : Study and identify of land subsidence in Mayamey area using Remote sensing, Geophysics and Underground water data
Thesis > Central Library of Shahrood University > Mining, Petroleum & Geophysics Engineering > MSc > 2019
Authors:
Soheila Valikhani [Author], Ali Reza Arab-Amiri[Supervisor], Susan Ebrahimi[Supervisor], Abolghasem Kamkar Rouhani[Advisor]
Abstarct: Growing population and the increasing need for human to supply the needed water have been made the use of underground resources more that over. Overdraft of subsurface resources will be lead to a subsidence environmental event that can lead to devastating effects in residential, industrial and agricultural areas with a gradual or sudden subsidence. The Mayamey Plain aquifer is one of the free and low- thickness aquifers of central Iran, with a dry climate and increased use of underground resources for agricultural use due to the lack of permanent rivers and low rainfall. In order to determine the amount of subsidence in the area, after one-dimensional modeling of electrical catheters using IX1D software, the thickness of the clay at the top of the aquifer was estimated. The results of geophysical studies show that the western part of the aquifer is composed of fine alluvium and shows high clay content in this area. Studies of Sentinel1A satellite and Prepare Interferogram in GAMMA software show a clear subsidence in the southwest of Mehdi Abad village at a rate of 3 cm per year. Piezometer well studies and groundwater level mapping and groundwater mapping in the twenty year period (during 1996 to 2016) indicate changes in groundwater level in the Mayamey Plain aquifer and indicate a 30 m elevation difference over the twenty year period gives. On the basis of the current studies, the most effective factors to the subsidence are overdraft of groundwater resources and factors such as tectonics and thickness of unstable sedimentary laxyers that have contributed to subsidence in the Mayamey Plain. Keywords: Subsidence, Radar Interferometry, Geoelectric, Rock Clay, Groundwater, Mayamey Plain Aquifer, ArcGIS
Keywords:
#Subsidence #Radar Interferometry #Geoelectric #Rock Clay #Groundwater #Mayamey Plain Aquifer #ArcGIS Link
Keeping place: Central Library of Shahrood University
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