Identification of deep Czech Republic-Austria transboundary aquifer discharge and associated river chloride loading

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F24%3A00136145" target="_blank" >RIV/00216224:14310/24:00136145 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1007/s12665-024-11670-7" target="_blank" >https://link.springer.com/article/10.1007/s12665-024-11670-7</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s12665-024-11670-7" target="_blank" >10.1007/s12665-024-11670-7</a>

Result language

angličtina

Original language name

Identification of deep Czech Republic-Austria transboundary aquifer discharge and associated river chloride loading

Original language description

The deep transboundary aquifer of regional scale along the Czech Republic–Austria border in Central Europe serves as a thermal-mineral water resource for balneotherapy and plays an important role in the region’s development. The aquifer is composed mostly of Jurassic carbonates at depths from 160 to −3000 masl. Despite more than two decades of exploitation, no complex analysis of groundwater flow directions and groundwater fluxes ever took place. Now, cross-border cooperation enabled the research team to gather crucial information on the Jurassic aquifer. For a better understanding of the groundwater flow system, a numerical model was developed. To simulate the effect of variable density and viscosity occurring in such a deep aquifer, the SEAWAT numerical model was used. The simulation shows that there is an inflow of low mineralised groundwater from the crystalline outcrops in the northwest and inflow of saline groundwater from southeast. Aquifer discharge was identified along the zone partly corresponding to the course of the Dyje river. To check the model’s accuracy, the river water was sampled together with streamflow measurements. Detected sections of increasing chloride concentration indicate zones of the Jurassic aquifer discharge into the Dyje river. The discharge rate of 85 L/s derived from streamflow and chloride concentrations matches the value computed by the model. The relatively high discharge of the Jurassic aquifer contributes significantly to the high chloride loading observed in the Dyje river.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10503 - Water resources

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Environmental Earth Sciences

ISSN

1866-6280

e-ISSN

1866-6299

Volume of the periodical

83

Issue of the periodical within the volume

12

Country of publishing house

DE - GERMANY

Number of pages

16

Pages from-to

1-16

UT code for WoS article

001233942700002

EID of the result in the Scopus database

2-s2.0-85194890353