Apport du traçage physico-chimique naturel à la connaissance hydrocinématique des aquifères carbonatés

Citation

Material Information

Title:
Apport du traçage physico-chimique naturel à la connaissance hydrocinématique des aquifères carbonatés
Creator:
Mudry, Jacques
Publication Date:
Language:
English

Subjects

Subjects / Keywords:
Unsaturated Zone ( local )
Spring ( local )
Hydrochemistry ( local )
Hydrodynamics ( local )
Hydrological Methods ( local )
Environmental Isotopes ( local )
Water Depletion ( local )
Floods ( local )
Water Recession ( local )
Jura Mountains ( local )
Genre:
serial ( sobekcm )

Notes

Abstract:
Carbonate aquifers bear a memory of the recharge episodes. The environmental, physical and chemical tracing allows to specify the origin of the discharge water passing through the spring, hence it is an essential complement to the hydrodynamical studies. The first part of this thesis deals with the study of the time-variations of the physical and chemical content of the karst springs, on weekly and daily bases. The second part tries, from the chronological studies, to compute the amount of the reserves and of the underground flow in the total discharge of the spring, during flood and hydrological cycles. The third part purposes to prospect the hydrogeological regions (Jura Mountains and Southeastern France) with synchronous snapshots. This work allows a schematization of the behavior of the system. At the end of a depletion period, the precipitations percolate, accumulate and replace the stored water and solutes in the various "unsaturated" reservoirs -soil and epikarst- and saturated reservoirs -flow axes and capacitive zones-. The outlet records the chemical character of both media: surface (=immediate infiltration) and saturated (=piston effect) zones. The effective and massive contribution of the underground flow to the total discharge occurs in a mixture with the reserve water, often after the hydrograph peak, at the beginning of the recession. The depletation of the reserve begins when the contribution of the underground flow stops in the mixture. Hence the physical and chemical investigation allows weIl to discriminate between hydrokinematics and hydrodynamics, that is transit and transfer, respectively. The identification of the uninfluenced period, with help of snapshots, allows getting much information about the geochemical environment of the karst, its hydrocinematical behavior at a regional scale in a mountain zone, the location of recharge area and reserves, the mean age of permanent reserves and human influence on their quality. The representativeness of methods and study periods has been proved.

Record Information

Source Institution:
University of South Florida Library
Holding Location:
University of South Florida
Rights Management:
This object is protected by copyright, and is made available here for research and educational purposes. Permission to reuse, publish, or reproduce the object beyond the bounds of Fair Use or other exemptions to copyright law must be obtained from the copyright holder.

USFLDC Membership

Aggregations:
University of South Florida
Karst Information Portal

Postcard Information

Format:
serial

printinsert_linkshareget_appmore_horiz

Download Options

close

No images or PDF downloads are available for this resource.


Cite this item close

APA

Cras ut cursus ante, a fringilla nunc. Mauris lorem nunc, cursus sit amet enim ac, vehicula vestibulum mi. Mauris viverra nisl vel enim faucibus porta. Praesent sit amet ornare diam, non finibus nulla.

MLA

Cras efficitur magna et sapien varius, luctus ullamcorper dolor convallis. Orci varius natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Fusce sit amet justo ut erat laoreet congue sed a ante.

CHICAGO

Phasellus ornare in augue eu imperdiet. Donec malesuada sapien ante, at vehicula orci tempor molestie. Proin vitae urna elit. Pellentesque vitae nisi et diam euismod malesuada aliquet non erat.

WIKIPEDIA

Nunc fringilla dolor ut dictum placerat. Proin ac neque rutrum, consectetur ligula id, laoreet ligula. Nulla lorem massa, consectetur vitae consequat in, lobortis at dolor. Nunc sed leo odio.