Water level response in wells to dynamic shaking in confined unconsolidated sediments: A laboratory study

Gu, Hongbiao; Lan, Shuangshuang; Zhang, Huang; Wang, Mingyuan; Chi, Baoming; Sauter, Martin

doi:10.1016/j.jhydrol.2021.126150

Cited by 3 publications

(1 citation statement)

References 44 publications

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“…The precursory mechanism of water radon anomalies may be closely related to the change in permeability during earthquake preparation. In the process of earthquake preparation, the accumulation of stress and strain may cause changes in crustal permeability [51]. The continuous accumulation process constantly disrupts the mechanical balance between particles, moving each other, changes the porosity and groundwater flow, and finally leads to "avalanches" and forms new pore channels.…”

Section: Possible Explanations For Different Anomaly Characteristicsmentioning

confidence: 99%

Identification of Groundwater Radon Precursory Anomalies by Critical Slowing down Theory: A Case Study in Yunnan Region, Southwest China

Qiao

Wang

Fang

et al. 2022

Water

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In this study, we use the critical slowing down (CSD) theory to identify the precursory anomalies of groundwater radon based on the 1000-day continuous data from 8 monitoring stations in Yunnan Province, China during the seismically active period of 1993–1996. The low-frequency and high-frequency information were extracted from raw groundwater radon data to calculate their one-step lag autocorrelation (AR-1) and variance, respectively, in order to identify the precursory anomalies. The results show that the anomaly characteristics can be divided into three categories: sudden jump anomalies, persistent anomalies, and fluctuation anomalies. The highest average seismic recognition rate is 72.78%, based on the high-frequency information’s autocorrelation, while the lowest is 45.08%, based on the low-frequency information’s variance. The crustal activity and the change in hydrogeological conditions are possibly the main factors influencing groundwater radon anomalies in the selected period in the study area. There is a positive correlation between the anomaly occurrence time and epicentral distance when epicentral distance is less than 300 km, which may be related to the seismogenic modes and hydrogeological conditions. This study provides a reference for identifying groundwater radon anomalies before earthquakes by mathematical methods.

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Section: Possible Explanations For Different Anomaly Characteristicsmentioning

confidence: 99%

Identification of Groundwater Radon Precursory Anomalies by Critical Slowing down Theory: A Case Study in Yunnan Region, Southwest China

Qiao

Wang

Fang

et al. 2022

Water

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Seismically-induced groundwater flow into confining clays: An experimental and numerical study

Wang,

Gu,

Liu

et al. 2024

Journal of Hydrology

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Hydrochemical and Isotopic Characterization of the Impact of Water Diversion on Water in Drainage Channels, Groundwater, and Lake Ulansuhai in China

Han

Zhai

Guo

et al. 2021

Water

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Lakes are important natural water reservoirs that connect other water bodies and play essential roles in water supply, ecological preservation, and climate regulation. Because of global climate change and human activities, many lakes worldwide are facing severe challenges, such as ecological degradation and reductions in their water storage, levels, surface areas, and quality. Water diversion into lakes is considered an effective measure to address these challenges and has attracted much attention. Water has been diverted into Lake Ulansuhai through drainage channels from the Yellow River since 2013. This shallow lake is located in arid northern China and is greatly affected by high salinity and eutrophication. The lake is the lowest area in the Hetao basin and is a sink for terrestrial water in this region. High salinity in lake water, drainage channels, and groundwater caused by NaCl is an ongoing problem; however, water diversion has played an important role in dilution. The main hydrochemical type in the lake water is Cl·HCO3–Na·Mg, while those in the drainage channels and the groundwater show more diversity because of spatial differences. The main source of water in the lake (52–60%) is that diverted through six drainage channels on the west bank, followed by meteoric precipitation (36–38%). Groundwater recharge to the lake is minimal (west bank: 2–7%, and east bank: 1–5%). Extensive evaporation occurs in the lake before the lake water is discharged into the Yellow River through a waste canal. The hydrochemical evolution and salinization of the lake are dominated by the six drainage channels, followed by evaporation from the lake surface. Thus, resolution of soil salinization in the Hetao irrigation area is key to addressing salinity issues in the lake. This study will be helpful for the planning of future water diversion and ecological restoration.

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Water level response in wells to dynamic shaking in confined unconsolidated sediments: A laboratory study

Cited by 3 publications

References 44 publications

Identification of Groundwater Radon Precursory Anomalies by Critical Slowing down Theory: A Case Study in Yunnan Region, Southwest China

Identification of Groundwater Radon Precursory Anomalies by Critical Slowing down Theory: A Case Study in Yunnan Region, Southwest China

Seismically-induced groundwater flow into confining clays: An experimental and numerical study

Hydrochemical and Isotopic Characterization of the Impact of Water Diversion on Water in Drainage Channels, Groundwater, and Lake Ulansuhai in China

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