Survey of a coastal karstic aquifer by analysis of the effect of the sea-tide: Example of the Kras of Slovenia, Yugoslavia

1984 ◽  
Vol 6 (2) ◽  
pp. 103-109 ◽  
Author(s):  
C. Drogue ◽  
M. Razack ◽  
P. Krivic
Keyword(s):  
Karstic Aquifer

Agricultural pesticide residues in water from a karstic aquifer in Yucatan, Mexico, pose a risk to children’s health

2021 ◽  
pp. 1-15
Author(s):  
Javier Perera-Rios ◽  
Elizabeth Ruiz-Suarez ◽  
Pedro de Jesús Bastidas-Bastidas ◽  
Fernando May-Euán ◽  
Gloria Uicab-Pool ◽  
...  
Keyword(s):  
Pesticide Residues ◽  
Children's Health ◽  
Children’S Health ◽  
Karstic Aquifer ◽  
Agricultural Pesticide

Conceptualization of Karstic Aquifer with Multiple Outlets Using a Dual Porosity Model

Ground Water ◽  
2017 ◽  
Vol 55 (4) ◽  
pp. 558-564 ◽  
Author(s):  
Seiyed Mossa Hosseini ◽  
Behzad Ataie-Ashtiani
Keyword(s):  
Dual Porosity ◽  
Karstic Aquifer ◽  
Dual Porosity Model ◽  
Porosity Model

scholarly journals Hydrogeochemistry and groundwater mixing close to an oil field: an example from Asmari karstic aquifer, Khuzestan, Iran

2017 ◽  
Vol 18 (2) ◽  
pp. 357-370 ◽  
Author(s):  
H. Rouhi ◽  
N. Kalantari
Keyword(s):  
Saline Water ◽  
Flow Direction ◽  
Groundwater Resources ◽  
Relative Concentration ◽  
Major Elements ◽  
Oil Field ◽  
Water Salinity ◽  
Karstic Aquifer ◽  
Volume Percentage ◽  
Bromide Ion

Abstract Both carbonate (as the oil-gas reservoir) and evaporite rocks (as caprock) coexist in the Masjed Soleyman oil field. The Asmari karstic aquifer is formed within Oligo-Miocene carbonate rocks in the south of the oil reservoir. A mixing between fresh karstic groundwater and oil-field brines is to be expected because of underground migration of the brines toward the aquifer. This process can reduce the groundwater quality by both increasing the water salinity and by adding hydrocarbon and sulfur contaminants into the groundwater. Tembi river contains saline water that can affect groundwater resources. Leaking of these brines into the aquifer was distinguished using total dissolved solids, the relative concentration of major elements, bromide ion (as a trace element), total organic carbon, ion ratios, and mixing curve diagrams. The polluted zone was determined by tracking the hydrochemistry changes across the groundwater flow direction. The volume percentage of different water sources in mixed groundwater was calculated and validated using PHREEQC software. The results revealed that the contribution of the oil-field brine in the groundwater is much lower than the salty river brine, but even this low amount has a considerable impact on water quality by increasing water salinity and adding hydrocarbon and sulfur into the groundwater.

scholarly journals The problems of overexploitation of aquifers in semi-arid areas: the Murcia Region and the Segura Basin (South-east Spain) case

2012 ◽  
Vol 9 (5) ◽  
pp. 5729-5756 ◽  
Author(s):  
T. Rodríguez-Estrella
Keyword(s):  
Water Quality ◽  
Water Levels ◽  
Arid Areas ◽  
Karstic Aquifer ◽  
Autonomous Region ◽  
Groundwater Reserves ◽  
One Year ◽  
Semi Arid ◽  
Overexploited Aquifer ◽  
Poor Management

Abstract. A general analysis of the problems arising from aquifer exploitation in semi-arid areas such as the Autonomous Region of Murcia, which belongs to the Segura Basin is presented, with particular reference to the Ascoy-Sopalmo aquifer, which is the most overexploited aquifer in Spain. It has suffered intense overabstraction over the last forty years, given renewable water resources of 2 Mm3 yr−1 and abstractions amounting to as much as 55 Mm3 yr−1. This has resulted in the drying of springs, continuous drawdown of water levels (5 m yr−1); piezometric drops (over 30 m in one year, as a consequence of it being a karstic aquifer); increase in pumping costs (elevating water from more than 320 m depth); abandoning of wells (45 reduced to 20), diminishing groundwater reserves, and deteriorating water quality (progressing from a mixed sodium bicarbonate-chloride facies to a sodium chloride one). This is a prime example of poor management with disastrous consequences. In this sense, a series of internal measures is proposed to alleviate the overexploitation of this aquifer and of the Segura Basin, with the aim of contributing to a sustainable future.

Two new stygobiotic species of Elaphoidella (Crustacea: Copepoda: Harpacticoida) with comments on geographical distribution and ecology of harpacticoids from caves in Thailand

Zootaxa ◽  
2015 ◽  
Vol 3919 (1) ◽  
pp. 81 ◽  
Author(s):  
SANTI WATIROYRAM ◽  
ANTON BRANCELJ ◽  
LA-ORSRI SANOAMUANG
Keyword(s):  
New Species ◽  
Geographical Distribution ◽  
Related Species ◽  
Unsaturated Zone ◽  
Exopodal Segment ◽  
Karstic Aquifer ◽  
Setal Formula ◽  
Closely Related Species ◽  
Distribution And Ecology

Elaphoidella thailandensis sp. nov. and E. jaesornensis sp. nov., collected during an investigation of cave-dwelling copepod fauna in the northern part of Thailand, are described and figured herein. The new species were collected from pools filled by percolating water from the unsaturated zone of a karstic aquifer in Phitsanulok and Lampang Provinces, respectively. Elaphoidella thailandensis, from Tham Khun cave, is distinguished from its congeners by the two-segmented endopod of pediger 1, the absence of endopod on pediger 4, and the setal formula 4, 5, 6 for the distal exopodal segment of pedigers 2–4. Elaphoidella jaesornensis, from Tham Phar Ngam cave, is distinguished from its most closely related species, E. namnaoensis Brancelj, Watiroyram & Sanoamuang, 2010, by the armature formula of the endopod of pedigers 2–5. The geographical distribution and ecology of Harpacticoida from Thai caves is also presented. 

Sign in / Sign up

Export Citation Format

Share Document