Identifying groundwater end members by spatio-temporal isotopic and hydrogeochemical records

Pérez-Quezadas, Juan; Cortés-Silva, Alejandra; Morales-Casique, Eric; Escolero, Óscar; Medina-Ortega, Priscila

doi:10.1080/10256016.2020.1817915

Cited by 3 publications

(4 citation statements)

References 28 publications

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“…However, the Ca 2+ and Mg 2+ of some mine water in the shallow and deep sublevels deviated from the mixing line. This phenomenon indicates that ion exchange occurs between the Ca 2+ and Mg 2+ in mine water, which is consistent with the research results of other studies [8].…”

Section: Analysis On Water-rock Reactionsupporting

confidence: 92%

“…Monitoring and sampling all of the inrush fissures revealed the presence of multiple bedrock brine in the study area. The basic assumptions of the study are as follows: (1) the chemical characteristics of the inrush end elements are constant; (2) the mine water is controlled by the mixing of different end elements; and (3) (as explained by the reactions) the ions and isotopes used as tracers are stable [8].…”

Section: Methodsmentioning

confidence: 99%

“…After years of mining, the main mining sections of coastal mines are mostly located below sea level; thus, once seawater floods into the roadway, it will cause immeasurable losses [6,7]. However, it is very difficult to predict such disasters due to the phenomenon's complex mechanisms [8]. Hence, to propose reasonable protection suggestions, the most important aspect is to identify the sources of mine water and to calculate the end-member mixing ratio [9].…”

Section: Introductionmentioning

confidence: 99%

“…Principal component analysis replaces the original water sample information with the extracted principal components, which is a linear combination of the original information. Although it contains complete water sample information, it also results in the main information becoming "neutralized" by the secondary information, which weakens the indication role of the key information and may lead to an inability to accurately identify the water source [23].In this study, principal component analysis, cluster analysis, hydrogeochemical analysis, the maximum likelihood method, and other methods were used to identify the water sources in the Xishan mining area [8,16,24]. However, due to the limitation of timescales and the research area, the common problem with the methods was that only one type of brine was considered in all of the sublevels.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Interpreting Mine Water Sources and Determining Mixing Ratios Based on the Spatial and Chemical Characteristics of Bedrock Brines in a Coastal Mine

Song

Guo

et al. 2023

Water

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Water inrush caused by mining below the seafloor seriously affects the safety and production of mines. Identifying the end element of mine inrush and accurately calculating the mixing ratios of end elements are the basis for a reasonable evaluation of water inrush risk. Based on hydrogeochemical and stable isotope indexes, combined with the spatial distribution characteristics of brine, the classification of brine in the study area was preliminarily determined as follows: shallow brine, middle brine, and deep brine (while previous studies have only classified bedrock brine as one category). Hierarchical multi-index analysis was used to identify the inrush end elements in the different sublevels, and an end-element mixed model was determined according to the analysis results of the four pairs of evaluation indexes (Cl−–δ18 O, Cl−–Ca2+, Cl−–Mg2+, and Cl−–Na+). Through a comparison with the deviation analysis results of previous studies, it was shown that this method is suitable for mine-water-source identification when under complex hydrogeology conditions. According to the calculation results of the mixing ratio, the seawater ratio shows, within the mining process, a trend of first increasing, then decreasing, and finally stabilizing. This trend is controlled by disturbance stress, self-weight stress, and tectonic stress. The vertical zonation of the seawater proportions indicates that seawater mainly recharges mine water through vertical fractures. The difference in the proportion of seawater at the water inrush points of the −600 m sublevels indicates that the F3 fault and the northwest water-conducting fracture zone may be the preferred flow channels for seawater to recharge mine water. The research results are of great significance to promote the safe mining of coastal mines around the world.

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Section: Analysis On Water-rock Reactionsupporting

confidence: 92%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Interpreting Mine Water Sources and Determining Mixing Ratios Based on the Spatial and Chemical Characteristics of Bedrock Brines in a Coastal Mine

Song

Guo

et al. 2023

Water

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Effect of CO2 and H2SO4 on the dissolution of a carbonate basement and alteration of silicates in a volcano-sedimentary system in central Mexico

Morales Arredondo,

Armienta Hernández,

Flores Ocampo

et al. 2024

Groundwater for Sustainable Development

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Environmental isotope applications in Latin America and the Caribbean region

Soto

Sánchez‐Murillo

Ortega

et al. 2020

Isotopes in Environmental and Health Studies

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This Special Issue illustrates the use of environmental isotopes in studying and assessing hydrogeological and ecohydrological issues in the Latin America and the Caribbean (LAC) region. The issue includes twenty selected papers, which have been peer-reviewed in Isotopes in Environmental and Health Studies. Although the LAC region concentrates a third of the world's freshwater resources [1], access to safe water supplies and sanitation remains unevenly distributed, with water scarcity affecting most arid and semiarid areas and serious water quality issues across the region [2]. About 82% of the LAC population lives in urban centres, including some megacities, creating major challenges to water authorities [3]. Water security is often compromised due to a fast-growing water demand near urban centres (i.e. domestic supply, irrigation and industrial uses) along with the expected impacts of climate change [4] on both water availability and quality [5-7]. In many parts of the LAC region, groundwater resources have become the main or the only source of water to cover basic human needs and the maintenance of ecosystems [8-10]. This rapid increase of water demand is generally translated into intensive and unsustainable exploitation of water resources, having a profound impact on local hydrological cycles. In order to assess the availability of local resources for the near future and adopt sustainable management practices, sound and precise hydrological information is required. Stable (2 H, 13 C, 15 N, 18 O, 87 Sr) and radioactive (3 H, 7 Be, 14 C, 210 Pb, 222 Rn) environmental isotopes can provide unique and valuable information required for the assessment and comprehensive management of water resources and for understanding the complex interactions between terrestrial ecosystems (i.e. soil, vegetation) and the hydrological cycle. Isotope hydrology tools and methods have been used to characterise both surface and ground water systems, study recharge processes from rainfall generation to infiltration, coastal aquifers, major lakes and river basins as well as in assessing lake dynamics, geothermal fields, dam leakage problems, and evapotranspiration partitioning [11]. However, the incorporation of these applications in LAC has not been fully implemented yet. To date, there is a relatively small number of case studies published from a limited number of institutes and universities, often through the assistance and support provided since the 1980s by the International Atomic Energy Agency (IAEA) or through bilateral cooperation with other international agencies. The pressing need in recent years to better describe and understand our natural systems, coupled with the easier access to analytical instrumentation [12], has resulted in the establishment and consolidation of many research groups in the LAC region using environmental isotopes to study hydrological and ecological systems. Therefore, the region has made steady progress over the last years to train a new generation of experts in hydrology and ecology with courses and w...

show abstract

Identifying groundwater end members by spatio-temporal isotopic and hydrogeochemical records

Cited by 3 publications

References 28 publications

Interpreting Mine Water Sources and Determining Mixing Ratios Based on the Spatial and Chemical Characteristics of Bedrock Brines in a Coastal Mine

Interpreting Mine Water Sources and Determining Mixing Ratios Based on the Spatial and Chemical Characteristics of Bedrock Brines in a Coastal Mine

Effect of CO2 and H2SO4 on the dissolution of a carbonate basement and alteration of silicates in a volcano-sedimentary system in central Mexico

Environmental isotope applications in Latin America and the Caribbean region

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