Characterising the main karst aquifers of the Alvand basin, northwest of Zagros, Iran, by a hydrogeochemical approach

Karimi, Haji; Raeisi, Ezzat; Bakalowicz, Michel

doi:10.1007/s10040-004-0350-4

Cited by 61 publications

(34 citation statements)

References 5 publications

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“…al, www.intechopen.com 1990, Karimi et al, 2005), the subsurface catchments were found to be considerably larger than the hydrographic basins Fig. 3.…”

Section: Calculation Of Catchment Area and Determination Of The Boundarymentioning

confidence: 88%

“…The location and form of karst springs is determined primarily by the distribution of karst rocks, and the pattern of potential flow paths (fractures) in the rock (Karimi et al, 2005). Where karst rocks are intermixed with impermeable rocks, the latter act as barriers to groundwater flow, and karst springs tend to develop as "contact springs" where the boundary between the karst and impermeable rock is exposed at the surface.…”

Section: Wwwintechopencommentioning

confidence: 99%

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Hydrogeology of Karstic Area

Karimi¹

2012

Hydrogeology - A Global Perspective

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“…al, www.intechopen.com 1990, Karimi et al, 2005), the subsurface catchments were found to be considerably larger than the hydrographic basins Fig. 3.…”

Section: Calculation Of Catchment Area and Determination Of The Boundarymentioning

confidence: 88%

Section: Wwwintechopencommentioning

confidence: 99%

Hydrogeology of Karstic Area

Karimi¹

2012

Hydrogeology - A Global Perspective

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“…The Alvand river basin comprises seven main anticlines (Karimi, 2003), five of which are considered in this study, and include the Saravan, Emam-Hasan, Bunkhoshkeh, Patagh, and Rijab anticlines (Fig. 1).…”

Section: Several Anticlines In the Alvand River Basinmentioning

confidence: 99%

“…The core of the anticlines is composed of the Asmari formation and is situated between the impermeable upper Gachsaran and lower PabdehGurpi formations (Karimi et al, 2005b). The dense and thick bedded Asmari limestone in the anticlines has numerous joints and fractures with limited solution features and small shelter caves (Karimi et al 2005b). Generally, the southern flanks are hydraulically disconnected in most parts of the anticlines (Karimi, 2003), except in the plunge areas.…”

Section: Several Anticlines In the Alvand River Basinmentioning

confidence: 99%

“…The dense and thick bedded Asmari limestone in the anticlines has numerous joints and fractures with limited solution features and small shelter caves (Karimi et al 2005b). Generally, the southern flanks are hydraulically disconnected in most parts of the anticlines (Karimi, 2003), except in the plunge areas. Groundwater from the above aquifers discharge from seven main springs including Gilan (S1), Golin (S2), Sarabgarm (S3), Marab (S4), Piran (S5), Gharabolagh (S6) and Rijab (S7) Springs ( Fig.…”

Section: Several Anticlines In the Alvand River Basinmentioning

confidence: 99%

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On the Temporal Behavior of Karst Aquifers, zagros Region, Iran: A Geostatistical Approach

Mohammadi¹,

Field²

2009

J Cave Karst Stud

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A geostatistical approach was used to study temporal structures in a time series of discharge and electrical conductivity (EC) in 15 karst springs from the Zagros mountain range, Iran. Two types of temporal behaviors, a periodic structure and nugget effect, plus one or two temporal structures, were identified and interpreted. These correspond to characteristics of karst systems, such as the catchment area, percent of conduit flow, and general degree of karst development. Springs were grouped into three categories based on their ranges (e.g., residence time) obtained by variogram analysis. The first group of springs include those that present the same temporal behaviour in variograms of discharge and EC. These springs are characterized by generally constant EC with increasing discharge suggesting the existence of a large underground reservoir. The second group of springs are those with varying temporal periodic behavior in variograms of discharge and EC. Positive correlation between discharge and EC values is the main characteristic of these springs and is interpreted to result from a piston-flow system in poorly developed karst aquifers. The third group of springs includes those that exhibit different temporal behaviors when compared with the periodic and non-periodic variograms. This group exhibits a negative correlation in scatterplots of discharge versus EC values suggesting a well-developed solution-conduit system that facilitates rapid response of the karst system to precipitation events. This study's results document the role of variogram analysis in delineating temporal structures of spring behaviors by means of time series of discharge and EC. Variogram analysis can be considered as a valuable tool for hydrogeological investigations in karstic terranes.

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Arsenic Enrichment in the Groundwater of Diphu, Northeast India: Coupled Application of Major Ion Chemistry, Speciation Modeling, and Multivariate Statistical Techniques

Das

Kumar

2015

CLEAN Soil Air Water

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An integrated evaluation was carried out to predict prevailing processes of arsenic enrichment in the groundwater of Diphu, Assam, through major ion chemistry, speciation modeling, and multivariate statistical technique. Thirty‐eight groundwater samples were collected in 2011 to represent pre‐ and post‐monsoon season. Saturation indices of minerals present in the groundwater were calculated using MINTEQA2 to understand the future perspective of As contamination. Silicate weathering, rock water interaction, and reverse ion exchange are identified as major hydrogeochemical processes governing the groundwater chemistry. It could be shown that the release of carbonic acid due to silicate weathering resulted in an increase of total dissolved solid and increase in pH in the pre‐monsoon. Carbonic acid was further diluted and became alkaline due to monsoon recharge. The Gibbs plot revealed some anthropogenic input for the release of anionic minerals apart from rock–water interaction. Shallow aquifers were found to be more contaminated with As. Oxidative dissolution was identified as one of the major arsenic releasing mechanisms but a strong correlation between As and Fe was not identified. Future scenarios seem to be susceptible for As enrichment as natural equilibrium with As containing minerals is not reached. The study highlights the advantages of coupled application of major ions, multivariate statistical analyses, and associated change in saturation conditions of groundwater for better understanding of the arsenic enrichment processes.

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Characterising the main karst aquifers of the Alvand basin, northwest of Zagros, Iran, by a hydrogeochemical approach

Cited by 61 publications

References 5 publications

Hydrogeology of Karstic Area

Hydrogeology of Karstic Area

On the Temporal Behavior of Karst Aquifers, zagros Region, Iran: A Geostatistical Approach

Arsenic Enrichment in the Groundwater of Diphu, Northeast India: Coupled Application of Major Ion Chemistry, Speciation Modeling, and Multivariate Statistical Techniques

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