Chemical Characteristics of Surface Water and Groundwater in Coastal Watershed, Mekong Delta, Vietnam

Tran, Dang An; Tsujimura, Maki; Vo, Phu Le; Kawachi, Atsushi; Ha, Doan Thu

doi:10.1016/j.proenv.2014.03.085

Cited by 49 publications

(25 citation statements)

References 4 publications

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“…Therefore, the two‐component LPMs were chosen for transit time modelling. We excluded a deep groundwater component because the connection between shallow and deep groundwater is insignificant (An et al, ; Boehmer, ; Ho et al, ). During the calibration, integrated parameters were adjusted to fit the measured isotopic records for each investigated well, following Weiler, McGlynn, McGuire, and McDonnell ().…”

Section: Methodsmentioning

confidence: 99%

“…Instead, there has been considerable interest in the arsenic contamination of groundwater (Buschmann et al, ; Erban, Gorelick, Zebker, & Fendorf, ; Kocar et al, ; Merola, Hien, Quyen, & Vengosh, ; Shinkai, Truc, Sumi, Canh, & Kumagai, ; Stanger, Truong, Ngoc, Luyen, & Thanh, ) and general groundwater quality (An, Tsujimura, Phu, Ha, & Hai, ; Hoang, Bang, Kim, Nguyen, & Dang, ; Le Luu, ; Wilbers, Sebesvari, & Renaud, ) in the VMD. Also, tracer‐based groundwater studies have primarily focused on qualitative aspects such as tracing the groundwater recharge sources (e.g., An et al, ; An, Tsujimura, Le Phu, Kawachi, & Ha, ; Ho et al, ; Thu, ). In other parts of the Mekong Delta, groundwater studies estimated the sources of recharge affected by evaporation, for example, from the wetland and ponds to the shallow groundwater in Cambodia (e.g., Lawson et al, ; Lawson, Polya, Boyce, Bryant, & Ballentine, ; Richards et al, ).…”

Section: Introductionmentioning

confidence: 99%

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Identification of groundwater mean transit times of precipitation and riverbank infiltration by two‐component lumped parameter models

Duy

Dũng

Heidbüchel

et al. 2019

Hydrological Processes

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Groundwater transit time is an essential hydrologic metric for groundwater resources management. However, especially in tropical environments, studies on the transit time distribution (TTD) of groundwater infiltration and its corresponding mean transit time (mTT) have been extremely limited due to data sparsity. In this study, we primarily use stable isotopes to examine the TTDs and their mTTs of both vertical and horizontal infiltration at a riverbank infiltration area in the Vietnamese Mekong Delta (VMD), representative of the tropical climate in Asian monsoon regions.Precipitation, river water, groundwater, and local ponding surface water were sampled for 3 to 9 years and analysed for stable isotopes (δ 18 O and δ 2 H), providing a unique data set of stable isotope records for a tropical region. We quantified the contribution that the two sources contributed to the local shallow groundwater by a novel concept of two-component lumped parameter models (LPMs) that are solved using δ 18 O records.The study illustrates that two-component LPMs, in conjunction with hydrological and isotopic measurements, are able to identify subsurface flow conditions and water mixing at riverbank infiltration systems. However, the predictive skill and the reliabil-

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Identification of groundwater mean transit times of precipitation and riverbank infiltration by two‐component lumped parameter models

Duy

Dũng

Heidbüchel

et al. 2019

Hydrological Processes

View full text Add to dashboard Cite

show abstract

“…8). Про-цесс внедрения морских вод в геологическом прош-лом в осадочные толщи на территории континенталь-ного Вьетнама хорошо изучен на примере дельты Красной Реки, где отчетливо видна смена химических типов от минерализованных хлоридных натриевых, в том числе с повышенным содержанием кальция, к пресным гидрокарбонатным натриевым подземных вод по мере удаления от береговой линии внутрь кон-тинента [15,27,40,47], те же закономерности наблю-даются в дельте реки Меконг [11] и Южном Трангбо. По отношению rNa/rCl (около 0.87) наиболее близки к морским -воды более низкой минерализации с повы-шенным содержанием в составе кальция, изученные в прибрежных районах (источники Пхуок Тинь, Бинь- хау, Такой, Винь Пхуонг Нха Транг, Тусон, Модук и Кы Ке) (рис.…”

Section: особенности геохимии термальных водunclassified

Hydrogeochemical Features of Thermal Water of South Trungbo

Novikov¹,

Doan²,

Phan³

et al. 2018

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“…An appropriate assessment method of groundwater quality contributes significantly to understanding the changing process of the chemical composition of the region [18]. The result of assessment can better reflect the changing process of groundwater quality, and be utilized to evaluate the quality of groundwater and guarantee its safety [19,20].…”

Section: Introductionmentioning

confidence: 99%

Hydrochemical Characteristics and Groundwater Quality Assessment in the Diluvial Fan of Gaoqiao, Emei Mountain, China

Yang

Chen

et al. 2018

Sustainability

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Methods for groundwater quality and pollution assessment are applied extensively, but it is difficult to determine a unified evaluation model. On the basis of hydrogeochemical characteristics analysis in 2016 compared with that in 1995, the five-element connection number SPA (set pair analysis) method was applied to evaluate the groundwater quality of the Gaoqiao diluvial fan under the influence of hydrogeological conditions and human activities along the flow path in our work. Descriptive statistics methods, Piper diagram, and a Schoeller diagram were also used to analyze the hydrochemical characteristics of groundwater such as chemical components, total dissolved solid, and total hardness. The change of the typical pollutant of fluorine was analyzed to evaluate the groundwater quality under the influence of human activities. The results showed that the groundwater quality in the study area was more in rank П. The basic hydrochemical types of shallow groundwater were HCO3-Ca·Mg and HCO3·SO4-Ca·Mg. The influencing factors of the hydrochemical component of groundwater were identified in the Gaoqiao diluvial fan. The quality of groundwater changed slightly from the top to the edge of the fan due to the water–rock interaction except for in Yucun and Hucun influenced by human activities. The assessment result can provide a scientific basis for the pollution prevention and changing process control of the groundwater in the hydrogeological unit of the Gaoqiao diluvial fan.

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Chemical Characteristics of Surface Water and Groundwater in Coastal Watershed, Mekong Delta, Vietnam

Cited by 49 publications

References 4 publications

Identification of groundwater mean transit times of precipitation and riverbank infiltration by two‐component lumped parameter models

Identification of groundwater mean transit times of precipitation and riverbank infiltration by two‐component lumped parameter models

Hydrogeochemical Features of Thermal Water of South Trungbo

Hydrochemical Characteristics and Groundwater Quality Assessment in the Diluvial Fan of Gaoqiao, Emei Mountain, China

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