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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Water resources and hydroinformatics : Forecasting of subsidence due to groundwater over exploitation using modflow and interferometry tech...
Forecasting of subsidence due to groundwater over exploitation using modflow and interferometry technique in radar imageryinsert your paper title here
Author : FATEMEH JAFARI(1), SAMAN JAVADI(2) & NEAMAT KARIMI(3)
ABSTRACT
Subsidence is one of disasters due to groundwater over exploitation. Aquifer compaction and land subsidence
accompanying groundwater abstraction in susceptible aquifer systems in the Aliabad plain in the center of Iran is a
challenge for managing groundwater resources and provide hazards. Indeed, Subsidence is a permanent and irreversible
phenomenon which occurs when groundwater level decrease dramatically. Land subsidence could occur because of
groundwater over exploitation as a result of compaction in compressible soil layers. It is important to identify the affected
aquifer part and simulate groundwater flow and subsidence conditions in this area. Developments in the assessment of
subsidence provide more information to constrain analyses and simulation of aquifer-system compaction. To simulating
vertical aquifer compaction, such as those embodied in the aquitard drainage model and the MODFLOW subsidence
packages, have proven useful from the perspective of regional groundwater resources assessment.
In this research groundwater flow and aquifer compaction is simulated using MODFLOW and SUB package. Used in this
research is interferometry technique in Radar imagery in order to measuring subsidence in the area during specific time of
simulation. Base on the result, 70cm subsidence occurs during 7 years namely 2003 till 2010. In addition, main
subsidence observed in center of plain and also recharge zone of entrance. Base on model prediction this rate will
reaches to 150cm in the next five years if the water exploitation remains in stable. The only way to come over this issue
would be apply an integrated water management system in this area, which is vital to prevent any further subsidence
File Size : 872,079 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Water resources and hydroinformatics
Date Published : 28/08/2015
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