Review: Carbonate aquifers and future perspectives of karst hydrogeology in India

Dar, Farooq Ahmad; Perrin, José; Ahmed, Shakeel; Narayana, A. C.

doi:10.1007/s10040-014-1151-z

Cited by 19 publications

(2 citation statements)

References 37 publications

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“…However, the karst aquifers show a strong heterogeneity due to karstification [2,3], and there is a duality in karst aquifers recharge, runoff, and discharge [4][5][6], leading to a very complicated karst hydrological cycle process. Furthermore, the surface drainage divides tend to be inconsistent with underground drainage divides in karst areas [7][8][9]. All of these aspects pose great challenges to the hydrological modeling of karst watersheds.…”

Section: Introductionmentioning

confidence: 99%

Hydrological Modeling of Karst Watershed Containing Subterranean River Using a Modified SWAT Model: A Case Study of the Daotian River Basin, Southwest China

Geng

Zhang

et al. 2021

Water

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Karst watershed refers to the total range of surface and underground recharge areas of rivers (including subterranean rivers and surface rivers) in karst areas. Karst water resources, as the primary source of domestic water supply in southwest China, are vital for the social and economic development of these regions. These resources are greatly significant for guiding water resources management in karst areas to establish a high-precision hydrological model of karst watersheds. Choosing the Daotian river basin in the Wumeng Mountains of Southwest China as the study area, this paper proposed a method for simplifying karst subterranean rivers into surface rivers by modifying the digital elevation model (DEM) based on a field survey and tracer test. This method aims to solve the inconsistency between the topographical drainage divides and actual catchment boundaries in karst areas. The Soil and Water Assessment Tool (SWAT) model was modified by replacing the single-reservoir model in the groundwater module with a three-reservoir model to depict the constraints of multiple media on groundwater discharge in the karst system. The results show that the catchment areas beyond topographic watershed were effectively identified after simplifying subterranean rivers to surface rivers based on the modified DEM data, which ensured the accuracy of the basic model. For the calibration and two validation periods, the Nash–Sutcliffe efficiencies (NSE) of the modified SWAT model were 0.87, 0.83, and 0.85, respectively, and R2 were 0.88, 0.84, and 0.86, respectively. The NSE of the modified SWAT model was 0.09 higher than that of the original SWAT model in simulating baseflow, which effectively improved the simulation accuracy of daily runoff. In addition, the modified SWAT model had a lower uncertainty within the same parameter ranges than the original one. Therefore, the modified SWAT model is more applicable to karst watersheds.

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Section: Introductionmentioning

confidence: 99%

Hydrological Modeling of Karst Watershed Containing Subterranean River Using a Modified SWAT Model: A Case Study of the Daotian River Basin, Southwest China

Geng

Zhang

et al. 2021

Water

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“…Karst aquifers are highly heterogeneous and anisotropic; thus, groundwater management is difficult. Therefore, further scientific studies on the heterogeneity and other physical properties of karst aquifers are required [19]. Previous studies on the effects of rainfall and temperature on water-rock interactions have been conducted [8,20,21].…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Hydrochemistry and Stable Isotopes in a Karst Region in Samcheok, Republic of Korea

Jang

Lee

Kim

2021

Water

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Karst regions cover approximately 10% of the Korean Peninsula and are highly vulnerable to contamination. In this study, five field surveys were conducted between 2017 and 2019 to examine the monthly and seasonal changes in the hydro-environment of a characteristic karst region in Samchoek, South Korea. During the surveys, a total of 24 surface water samples were collected and analyzed for field water quality parameters, major and minor ions, and stable isotopes. The results indicate that the water quality in the study area is significantly affected by precipitation. Overall, the water was classified as a Ca-Mg-HCO3 type, and correlation analysis of the major ions detected in the water samples indicates that the inflow of nitrate to the surface water originated from agricultural activities in the region. Furthermore, variations caused by climate were verified using the relationships between the various ions. In addition, high precipitation rates during the rainy season cause the active exchange of surface material, which was verified using stable isotope outliers. The results provide a scientific basis for studying the connectivity of water systems in complex karst hydrogeological regions and can aid future sustainable management of water resources in these regions.

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Groundwater Resources of India: Potential, Challenges and Management

Saha

Ray

2018

Groundwater Development and Management

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Review: Carbonate aquifers and future perspectives of karst hydrogeology in India

Cited by 19 publications

References 37 publications

Hydrological Modeling of Karst Watershed Containing Subterranean River Using a Modified SWAT Model: A Case Study of the Daotian River Basin, Southwest China

Hydrological Modeling of Karst Watershed Containing Subterranean River Using a Modified SWAT Model: A Case Study of the Daotian River Basin, Southwest China

Characteristics of Hydrochemistry and Stable Isotopes in a Karst Region in Samcheok, Republic of Korea

Groundwater Resources of India: Potential, Challenges and Management

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