Journal ArticleDOI
Review: Regional land subsidence accompanying groundwater extraction
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TLDR
In this article, the analysis and simulation of aquifer-system compaction follow from the basic relations between head, stress, compressibility, and groundwater flow and are addressed primarily using two approaches (one based on conventional groundwater flow theory and one based on linear poroelasticity theory).Abstract:
The extraction of groundwater can generate land subsidence by causing the compaction of susceptible aquifer systems, typically unconsolidated alluvial or basin-fill aquifer systems comprising aquifers and aquitards. Various ground-based and remotely sensed methods are used to measure and map subsidence. Many areas of subsidence caused by groundwater pumping have been identified and monitored, and corrective measures to slow or halt subsidence have been devised. Two principal means are used to mitigate subsidence caused by groundwater withdrawal—reduction of groundwater withdrawal, and artificial recharge. Analysis and simulation of aquifer-system compaction follow from the basic relations between head, stress, compressibility, and groundwater flow and are addressed primarily using two approaches—one based on conventional groundwater flow theory and one based on linear poroelasticity theory. Research and development to improve the assessment and analysis of aquifer-system compaction, the accompanying subsidence and potential ground ruptures are needed in the topic areas of the hydromechanical behavior of aquitards, the role of horizontal deformation, the application of differential synthetic aperture radar interferometry, and the regional-scale simulation of coupled groundwater flow and aquifer-system deformation to support resource management and hazard mitigation measures.read more
Citations
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Journal ArticleDOI
Land subsidence in central Mexico detected by ALOS InSAR time-series
TL;DR: In this article, the authors used InSAR time-series analysis of ALOS data to resolve land subsidence in the entire central Mexico region, including 17 cities, and found that groundwater extraction mainly for agricultural and urban activities is the main cause of land subsiding.
Journal ArticleDOI
Groundwater extraction, land subsidence, and sea-level rise in the Mekong Delta, Vietnam
TL;DR: In this article, the authors measured recent subsidence rates (annual average, 2006-10) throughout the Mekong Delta, by analysis of interferometric synthetic aperture radar (InSAR), using 78 ALOS PALSAR interferograms.
Journal ArticleDOI
Flood risk assessment in metro systems of mega-cities using a GIS-based modeling approach.
TL;DR: The results show that >50% of metro lines are highly exposed to flood risk, indicating that the Guangzhou metro system is vulnerable to flood events.
Journal ArticleDOI
Coupled multiphase flow and poromechanics: A computational model of pore pressure effects on fault slip and earthquake triggering
Birendra Jha,Ruben Juanes +1 more
TL;DR: In this article, the authors presented a new computational approach to model coupled multiphase flow and geomechanics of faulted reservoirs, where faults were modeled as surfaces embedded in a three-dimensional medium by using zero-thickness interface elements to accurately model fault slip under dynamically evolving fluid pressure and fault strength.
Journal ArticleDOI
Offshore fresh groundwater reserves as a global phenomenon
TL;DR: The scope for continental shelf hydrogeology is broader and it is envisaged that it can contribute to the advancement of other scientific disciplines, in particular sedimentology and marine geochemistry.
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