Consequences of groundwater overexploitation on land subsidence in Fars Province of Iran and its mitigation management programme

2021 ◽  
Author(s):  
Mohsen Golian ◽  
Ali Saffarzadeh ◽  
Homayoon Katibeh ◽  
Masoud Mahdad ◽  
Habib Saadat ◽  
...  
Keyword(s):  
Land Subsidence ◽  
Management Programme ◽  
Fars Province ◽  
Groundwater Overexploitation

scholarly journals Using Multisensor SAR Datasets to Monitor Land Subsidence in Los Angeles from 2003 to 2017

2019 ◽  
Vol 2019 ◽  
pp. 1-15 ◽  
Author(s):  
Bo Hu ◽  
Xiongle Chen ◽  
Xingfu Zhang
Keyword(s):  
Los Angeles ◽  
Land Subsidence ◽  
Disaster Prevention ◽  
Practical Application ◽  
Gps Measurements ◽  
The Past ◽  
Groundwater Overexploitation ◽  
Small Baseline Subset ◽  
Temporal And Spatial ◽  
Small Baseline

Los Angeles has undergone tremendous deformations over the past few decades, mainly due to human factors such as natural disasters and earthquakes, urban construction, overexploitation of groundwater, and oil extraction. The purpose of this study is to map the temporal and spatial variations of land subsidence in Los Angeles and to use the improved SBAS (small baseline subset) technique and multisensor SAR datasets to analyze the causes of deformations in this area from October 2003 to October 2017. At the same time, the deformation results of SBAS inversion are compared with the GPS measurements and the multisensor SAR dataset deformation, and the results are highly consistent. During the period from 2003 to 2017, there were several subsidence regions and one uplift region in Los Angeles. The cumulative subsidence was -266.8 mm at the maximum, and the average annual subsidence velocity was -19 mm/yr, which was mainly caused by groundwater overexploitation. The maximum amount of accumulated lift is +104.8 mm, and the average annual lifting velocity can reach +7.5 mm/yr. Our results have very strong practical application value and can provide a significant basis for local government services in disaster prevention and mitigation decision-making.

scholarly journals Study on compaction mechanism of overconsolidated soil and critical groundwater level in Cangzhou

2019 ◽  
Vol 79 ◽  
pp. 02010
Author(s):  
Yunlong Wang ◽  
Ye Chen ◽  
Haipeng Guo ◽  
Xisheng Zang
Keyword(s):  
Stress Analysis ◽  
Water Level ◽  
Water Resource ◽  
Land Subsidence ◽  
Groundwater Level ◽  
Groundwater Exploitation ◽  
Groundwater Levels ◽  
Good Consistency ◽  
Long Time ◽  
Groundwater Overexploitation

Cangzhou area is facing increasingly serious land subsidence problem caused by groundwater overexploitation during a long time. In order to make effectively use of water resource and to limit the development of subsidence, it is necessary to establish the warning critical water level, that is, the subsidence rate will increase significantly as the water level depths exceeds the critical groundwater levels. In this paper, the 3rd aquifer group, the main groundwater exploitation layer, has been taken as a research object. The critical water level is calculated by stress analysis, and then determined by the correlation between the monitoring data of groundwater levels and subsidence. The calculated results indicate good consistency.

Securing the subterranean volumes: Geometrics, land subsidence and the materialities of things

2020 ◽  
pp. 026377582095803
Author(s):  
Chi-Mao Wang
Keyword(s):  
Environmental Management ◽  
Land Subsidence ◽  
High Speed ◽  
Management Programme ◽  
Three Dimensions ◽  
Chaotic State ◽  
High Speed Rail ◽  
New Horizons ◽  
Rail Infrastructure ◽  
Monitoring Technologies

In 2011, thousands of Taiwanese farmers gathered in Yunlin County to protest against a government environmental management programme which attempted to address the land subsidence that has threatened Taiwan’s High-Speed Rail infrastructure. New environmental monitoring technologies have been developed to deal with the land subsidence but these have, simultaneously, provoked contestation. The dispute indicates that the horizontalism inherent in traditional studies of geopolitics fails to account for the politics of verticality. Indeed, recent work on volumetric politics opens up new horizons for thinking about the exercise of power through three dimensions; the geopolitics of the underground have remained untheorised. Moreover, the existing literature on volume also fails to account for the chaotic state of the material world. From the perspective of assemblage thinking, I outline three characteristics which shape the ‘geopolitics of land subsidence’. From this standpoint, this paper argues for a geographical approach to subterranean politics which puts more emphasis on volume, emergence and matter. With reference to ethnographical fieldwork conducted in scientific laboratories and in Yunlin County, I demonstrate how subterranean materials continuously frustrate the state’s volumetric practices. By problematising the geopolitics of land subsidence, this paper also advances the understanding of political geology, which is seeking to ‘decolonise’ and ‘pluralise geological thought’.

scholarly journals Research of features related to land subsidence and ground fissure disasters in the Beijing Plain

2015 ◽  
Vol 372 ◽  
pp. 239-242 ◽  
Author(s):  
Y. Yang ◽  
Y. Luo ◽  
M. Liu ◽  
R. Wang ◽  
H. Wang
Keyword(s):  
Land Subsidence ◽  
Structural Control ◽  
Rapid Development ◽  
Ground Fissure ◽  
Ground Fissures ◽  
Development History ◽  
Beijing Plain ◽  
Annual Periodicity ◽  
Groundwater Overexploitation ◽  
And Control

Abstract. This study overviews the development history, current situation, impact, and hazards of land subsidence and ground fissure disasters in the Beijing Plain (BP) and focuses on the disaster distribution and features of disaster-causing mechanisms. Currently, the BP is still in a rapid developmental stage of land subsidence. The development and distribution of land subsidence are affected by various factors including the thickness of Quaternary compressible clay, groundwater overexploitation, and the rapid development of urban construction. The causes of ground fissures in the BP are complex and diverse, with evidence of structure fissures, non-structure fissures, and mixed genesis fissures. Investigations of the Gaoliying ground fissure have shown that this fissure has evidence of fracture activity, with vertical deformation that is more significant than horizontal deformation. Furthermore, this ground fissure has characteristics of inter-annual periodicity and annual jumping. The land subsidence and ground fissures are all under structural control and impact each other, and more severe hazards may be induced under the superimposition of these two types of disasters. Effective measures and suggestions for disaster prevention and control are recommended on the basis of this study.

Numerical simulation of land subsidence induced by groundwater overexploitation in Su-Xi-Chang area, China

2008 ◽  
Vol 57 (6) ◽  
pp. 1409-1421 ◽  
Author(s):  
Ji-Chun Wu ◽  
Xiao-Qing Shi ◽  
Shu-Jun Ye ◽  
Yu-Qun Xue ◽  
Yun Zhang ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Land Subsidence ◽  
Groundwater Overexploitation

Morphometric analysis of the terrain over time to characterize subsidence. Case study: Mexico City, Mexico.

2021 ◽  
Author(s):  
Gabriela Vidal ◽  
Jacob Nieto Butrón ◽  
Mario Alberto Hernández Hernández ◽  
Graciela Herrera Zamarrón ◽  
Enrique Cabral Cano ◽  
...  
Keyword(s):  
Mexico City ◽  
Land Subsidence ◽  
Free Access ◽  
Building Structures ◽  
Commercial Building ◽  
Groundwater Overexploitation ◽  
Changes Over Time ◽  
Over Time

<p>It is well known that groundwater overexploitation can generate land subsidence due to the compaction of compressible aquitards. Mexico City's soils are an important example of highly compressible lake sediments in compaction due to groundwater extraction that have significantly damaged the urban and commercial building structures. Previous studies indicate that there is annual subsidence of 15 to 25 cm in the Mexico City International Airport, 10 cm in downtown, and between 10 to 15 cm in the Southeast Mexico City area. Soil fracturing is an indicator of differential subsidence that has damaged buildings and infrastructure, including hydraulic pipes, sidewalks, and pavements. For this reason, it is necessary to carry out specific studies related to topographic deformation. This talk presents a characterization of the terrain changes over time and a zoning map for Mexico City subsidence susceptibility. To this end, free access elevation models generated from 2000 to 2018 by different sensors and methodologies were compared. The resulting model is validated by mapping information from active GPS stations, whose data is also freely available. Besides, a spatial comparison of land subsidence areas and sites previously identified as flooding and aquifer overexploitation areas is presented. The results will serve as a basis for future monitoring to be carried out in the area with high-resolution tools.</p>

The effect of groundwater overexploitation on land subsidence and sinkhole occurrences, western Iran

2012 ◽  
Vol 45 (4) ◽  
pp. 447-456 ◽  
Author(s):  
Gholamreza Khanlari ◽  
Mojtaba Heidari ◽  
Ali Akbar Momeni ◽  
Mohammad Ahmadi ◽  
Alireza Taleb Beydokhti
Keyword(s):  
Land Subsidence ◽  
Western Iran ◽  
Groundwater Overexploitation
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