Preliminary Assessment of Groundwater and Surface Water Characteristics in the Upper Chao Phraya River Basin Land Using a Stable Isotope Fingerprinting Technique

Laonamsai, Jeerapong; Putthividhya, Aksara

doi:10.1061/9780784479865.039

Cited by 7 publications

(5 citation statements)

References 30 publications

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“…Deuterium excess ( d -excess), defined as d -excess = δ 2 H − 8 × δ 18 O [35], is a dual isotope index and has been widely applied to precipitation and continental water studies [36,37,38]. The global average d -excess of meteoric water is 10‰ [32].…”

Section: Resultsmentioning

confidence: 99%

Stable H-O Isotopic Composition and Water Quality Assessment of Surface Water and Groundwater: A Case Study in the Dabie Mountains, Central China

Yang

Han

Song

et al. 2019

IJERPH

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In order to understand the water cycle and assess the water quality for irrigation purposes in the Upper Pi River Basin (UPRB), which is the northern slope of the Dabie Mountains, 68 surface water and groundwater samples were collected and analyzed for H-O isotopes and hydrochemistry during the high-flow season in 2017 and 2018. The results show that ranges of hydrogen and oxygen isotopic composition (δ2H: −68.8‰ to −40.8‰, δ18O: −10.05‰ to −5.05‰) are controlled by the medium latitude and high altitude of the UPRB. Among different types of water, the δ2H and δ18O values can be ordered as follows: reservoir water < spring water ≈ river water < pond water. The water of the upstream medium and small reservoir is enriched with lighter isotopes that is likely related to more exchange with rainwater and less residence time; however, large reservoirs are similar to the upstream river and spring in terms of the H-O isotopic composition. Hydro-chemical facies are dominated by the Ca-HCO3 type in the UPRB, which reflects fresh recharged water from rainfall, and few samples are of the Ca-Cl type that is caused by intensive evaporation. The water quality for irrigation purposes was also evaluated. According to the Wilcox diagram, United States Salinity Laboratory (USSL) diagram, magnesium hazard, and Kelly’s ratio, all water samples have been considered suitable for irrigation water.

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Section: Resultsmentioning

confidence: 99%

Stable H-O Isotopic Composition and Water Quality Assessment of Surface Water and Groundwater: A Case Study in the Dabie Mountains, Central China

Yang

Han

Song

et al. 2019

IJERPH

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“…2 identification of water sources across seasons, enhancing the analysis of how different water contributions affect river systems [19,20]. The technique of Isotopic End-Member Mixing Analysis (IEMMA) leverages these isotopic signatures to detail the contributions of various sources to river flow, offering a deeper look into the hydrological cycle and tributary-main river interactions [21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Innovative Assessment of Mun River Flow Components through ANN and Isotopic End-Member Mixing Analysis

Chomcheawchan,

Pawana,

Julphunthong

et al. 2024

Preprint

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This study innovatively assesses the Mun River flow components in Thailand, integrating Artificial Neural Networks (ANN) and Isotopic (18O) End-Member Mixing Analysis (IEMMA). It quantifies the contributions of the Upper Mun River (UMR) and Chi River (CR) to the overall flow, revealing a discrepancy in their estimated contributions. ANN predicts the UMR and CR contribute approximately 70.1% and 29.5% respectively, while IEMMA indicates a more pronounced disparity with 84% from UMR and 16% from CR. This divergence highlights the distinct perspectives of ANN, focusing on hydrological data patterns, and IEMMA, emphasizing isotopic signatures. Despite discrepancies, both methods validate UMR as a significant contributor to the overall flow, highlighting their utility in hydrological research. The findings underscore the complexity of river systems and advocate for an integrated approach of river flow analysis for a comprehensive understanding, crucial for effective water resource management and planning.

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“…This parameter is used to indicate secondary processes such as evaporation that may affect water samples [9]. Isotope hydrology enables the precise identification of water sources across seasons, enhancing the analysis of how different water contributions affect river systems [9,21,22]. The technique of isotopic end-member mixing analysis (IEMMA) advantages these isotopic signatures to detail the contributions of various sources to river flow, offering a deeper look into the hydrological cycle and tributary-main river interactions [23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Innovative Assessment of Mun River Flow Components through ANN and Isotopic End-Member Mixing Analysis

Chomcheawchan,

Pawana,

Julphunthong

et al. 2024

Geosciences

Self Cite

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This study innovatively assesses the Mun River flow components in Thailand, integrating artificial neural networks (ANNs) and isotopic (δ18O) end-member mixing analysis (IEMMA). It quantifies the contributions of the Upper Mun River (UMR) and Chi River (CR) to the overall flow, revealing a discrepancy in their estimated contributions. The ANN method predicts that the UMR and CR contribute approximately 70.5% and 29.5% respectively, while IEMMA indicates a more pronounced disparity with 84% from UMR and 16% from CR. This divergence highlights the distinct perspectives of ANN, focusing on hydrological data patterns, and IEMMA, emphasizing isotopic signatures. Despite discrepancies, both methods validate UMR as a significant contributor to the overall flow, highlighting their utility in hydrological research. The findings emphasize the complexity of river systems and advocate for an integrated approach of river flow analysis for a comprehensive understanding, crucial for effective water resource management and planning.

show abstract

Preliminary Assessment of Groundwater and Surface Water Characteristics in the Upper Chao Phraya River Basin Land Using a Stable Isotope Fingerprinting Technique

Cited by 7 publications

References 30 publications

Stable H-O Isotopic Composition and Water Quality Assessment of Surface Water and Groundwater: A Case Study in the Dabie Mountains, Central China

Stable H-O Isotopic Composition and Water Quality Assessment of Surface Water and Groundwater: A Case Study in the Dabie Mountains, Central China

Innovative Assessment of Mun River Flow Components through ANN and Isotopic End-Member Mixing Analysis

Innovative Assessment of Mun River Flow Components through ANN and Isotopic End-Member Mixing Analysis

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