Dispersion, retardation and scale effect in tracer breakthrough curves in karst conduits

Hauns, Michael; Jeannin, Pierre‐Yves; Atteia, Olivier

doi:10.1016/s0022-1694(00)00366-8

Cited by 121 publications

(94 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, neglecting longitudinal dispersivity will provide a reasonable approximation in many cases. This approximation will break down for particularly short duration pulses (Hauns et al, 2001), but is more likely to hold for the longer-term pulses typically found from natural perturbations. Neglecting longitudinal dispersivity results in…”

Section: Analytical Solutions For Damping and Thermal Retardationmentioning

confidence: 98%

Thermal damping and retardation in karst conduits

Luhmann

Covington²,

Myre³

et al. 2015

Hydrol. Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract. Water temperature is a non-conservative tracer in the environment. Variations in recharge temperature are damped and retarded as water moves through an aquifer due to heat exchange between water and rock. However, within karst aquifers, seasonal and short-term fluctuations in recharge temperature are often transmitted over long distances before they are fully damped. Using analytical solutions and numerical simulations, we develop relationships that describe the effect of flow path properties, flow-through time, recharge characteristics, and water and rock physical properties on the damping and retardation of thermal peaks/troughs in karst conduits. Using these relationships, one can estimate the thermal retardation and damping that would occur under given conditions with a given conduit geometry. Ultimately, these relationships can be used with thermal damping and retardation field data to estimate parameters such as conduit diameter. We also examine sets of numerical simulations where we relax some of the assumptions used to develop these relationships, testing the effects of variable diameter, variable velocity, open channels, and recharge shape on thermal damping and retardation to provide some constraints on uncertainty. Finally, we discuss a multitracer experiment that provides some field confirmation of our relationships. High temporal resolution water temperature data are required to obtain sufficient constraints on the magnitude and timing of thermal peaks and troughs in order to take full advantage of water temperature as a tracer.

show abstract

Section: Analytical Solutions For Damping and Thermal Retardationmentioning

confidence: 98%

Thermal damping and retardation in karst conduits

Luhmann

Covington²,

Myre³

et al. 2015

Hydrol. Earth Syst. Sci.

View full text Add to dashboard Cite

show abstract

“…Moreover, system understanding is absolute necessary to predict future changes in the light of climate change. Many studies in karstified areas focus on small-scale effects of karst conduits by examining spring hydrographs, chemographs and tracer breakthrough curves -to define the size and the characteristics of one individual spring aquifer (Birk et al 2004;Bonacci 1993;Einsiedl et al 2005;Geyer et al 2008;Grasso et al 2003;Hauns et al 2001;Kovács et al 2005;Smart 1988). Other approaches concentrate on karst genesis or theoretical conduit flow (Sauter et al 2006;White 2002).…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Effect of Alpine karst on the hydrology of the Berchtesgadener Ache basin: a comprehensive summary of karst research in the Berchtesgaden Alps

Kraller¹

2011

ecomont

View full text Add to dashboard Cite

The Berchtesgaden Alps are situated in the Northern Limestone Alps, characterized by individual mountain plateaus and ridges in close proximity to each other, intersected by valleys, with an altitudinal gradient of 2 100 meters. The limestone has been exposed to dissolution processes since the Cretaceous, leading to a massive karstified aquifer with a wide range of subsurface flow channels. There are hundreds of springs as groundwater recharge locations, feeding the seven rivers of the region that contribute to the Danube watershed. Several studies were conducted to examine the hydro-geological conditions and the resulting groundwater flow. This paper aims to evaluate and summarize research in the basin describing groundwater flow to identify the main drainage direction, travel times, spring dynamics and possible subsurface redistribution in the individual mountain ranges and the whole basin. To this end, we evaluate several tracer experiments, two isotope studies and a spring database. The tracer experiments are generating knowledge about flow directions in the individual mountain ranges, groundwater redistribution, water storage and mean travel times. Five experiments prove increased groundwater flow remaining within a valley and four experiments indicate groundwater redistribution through mountain ranges. The isotope studies indicate potential water storage in the Wimbach valley of an estimated 100 x 10 6 to 470 x 10 6 m 3 and mean transit times of about four years. The analysis of the spring database focuses on locations and discharge classification. Overall, there are 289 springs recorded in the spring database, distributed from 600 to over 2 000 m altitude, with major springs at the northern base of the mountains Hochkalter, Watzmann and at the north shore of lake Königssee. The conclusion summarizes the effect of the karst aquifer on the hydrology of the region. The outlook introduces current research within the area and the distributed water balance modelling. 19R e search eco.m o n t -Vo l u m e 3 , N u m b e r 1 , J u n e 2 0 1 1 ISSN 2 0 7 3 -1 0 6 X p r i n t v e r s i o n ISSN 2 0 7 3 -1 5 5 8 o n l i n e v e r s i o n : h t t p : / / e p u b . o e a w. a c . a t / e c o . m o n t

show abstract

“…In hydrogeology as well, quantitative experiments have been carried out to obtain the response curves (for example, Smart, (1988), Hauns et al(1991), Meus and Bakalowicz, M. (1997), Käss (1998), Birk et al (2005), Massei et al (2006), Geyer et al (2007), Morales et al (2007), Goldscheider et al(2008), Göppert and Goldscheider(2008), Perrin and Luetscher (2008) ). G-Yélamos (1999) presents a clear summary of these kinds of experiments in Spain.…”

Section: Methodsmentioning

confidence: 99%