Application of time-series analyses to the hydrological functioning of an Alpine karstic system: the case of Bange-L’Eau-Morte

Mathevet, Thibault; Lepiller, Michel; Mangin, A.

doi:10.5194/hess-8-1051-2004

Cited by 62 publications

(42 citation statements)

References 12 publications

(24 reference statements)

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“…repeated events at different temporal scales (Lafreneire and Sharp, 2003). This method has a long tradition in climatology and hydrology (e.g., Smith et al, 1998;Mathevet et al, 2004;Labat, 2005;Jiang et al, 2007), but, surprisingly, only a handful of studies used wavelet analyses on glacier-fed stream discharge time series, with, to our knowledge, only one study (Lafreneire and Sharp, 2003) using wavelet transforms on discharge time series to identify the seasonal and inter-annual variability in the relative contributions of different water sources (e.g., glacial ice, snow, rain and groundwater).…”

Section: S Cauvy-fraunié Et Al: Technical Note: Glacial Influence Ementioning

confidence: 99%

Technical Note: Glacial influence in tropical mountain hydrosystems evidenced by the diurnal cycle in water levels

Cauvy‐Fraunié

Condom

Rabatel

et al. 2013

Hydrol. Earth Syst. Sci.

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Abstract. Worldwide, the rapid shrinking of glaciers in response to ongoing climate change is modifying the glacial meltwater contribution to hydrosystems in glacierized catchments. Determining the influence of glacial runoff to streams is therefore of critical importance to evaluate potential impact of glacier retreat on water quality and aquatic biota. This task has challenged both glacier hydrologists and ecologists over the last 20 yr due to both structural and functional complexity of the glacier-stream system interface. Here we propose quantifying the diurnal cycle amplitude of the streamflow to determine the glacial influence in glacierized catchments. We performed water-level measurements using water pressure loggers over 10 months at 30 min time steps in 15 stream sites in 2 glacier-fed catchments in the Ecuadorian Andes (> 4000 m a.s.l.) where no perennial snow cover is observed outside the glaciers. For each stream site, we performed wavelet analyses on water-level time series, determined the scale-averaged wavelet power spectrum at 24 h scale and defined three metrics, namely the power, frequency and temporal clustering of the diurnal flow variation. The three metrics were then compared to the percentage of the glacier cover in the catchments, a metric of glacial influence widely used in the literature. As expected, we found that the diurnal variation power of glacier-fed streams decreased downstream with the addition of non-glacial tributaries. We also found that the diurnal variation power and the percentage of the glacier cover in the catchment were significantly positively correlated. Furthermore, we found that our method permits the detection of glacial signal in supposedly non-glacial sites, thereby revealing glacial meltwater resurgence. While we specifically focused on the tropical Andes in this paper, our approach to determine glacial influence may have potential applications in temperate and arctic glacierized catchments. The measure of diurnal water amplitude therefore appears as a powerful and cost-effective tool to understand the hydrological links between glaciers and hydrosystems better and assess the consequences of rapid glacier shrinking.

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Section: S Cauvy-fraunié Et Al: Technical Note: Glacial Influence Ementioning

confidence: 99%

Technical Note: Glacial influence in tropical mountain hydrosystems evidenced by the diurnal cycle in water levels

Cauvy‐Fraunié

Condom

Rabatel

et al. 2013

Hydrol. Earth Syst. Sci.

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“…Discharge variation versus chemical, electric conductivity, temperature or turbidity variation is also a classical tool to investigate aquifer behavior at the flood scale, using graphical analysis of chemographs or a hysteresis loop in XY plots (Bakalowicz, 1979;Chanat et al, 2002;Perrin et al, 2007;Valdes et al, 2006). Time series analyses have been successfully applied to karst aquifers to investigate the rainfall-discharge relationship at the global scale (e.g., Delbart et al, 2016;Denic-Jukic and Jukic, 2003;Mathevet et al, 2004;Padilla and Pulido-Bosch, 1995).…”

Section: Introductionmentioning

confidence: 99%

Groundwater management of a highly dynamic karst by assessing baseflow and quickflow with a rainfall-discharge model (Dardennes springs, SE France)

Baudement

Arfib

Mazzilli

et al. 2017

Bull. Soc. géol. Fr.

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-This paper aims at characterizing the groundwater flow in a highly dynamic karst aquifer using a global modeling approach based on rainfall and spring discharge time series. The Dardennes aquifer (SE France) was studied as it is used for drinking water supply and it also produces karst flash floods that increase the flood hazard downstream in urban areas. Three years of data were available, including a normal rainy year, a wet year and a dry year. Modeling was performed with the new platform KarstMod, a rainfalldischarge model with calibration tools. The Dardennes aquifer model was structured with three interconnected reservoirs: Epikarst, Matrix, and Conduit. Using this modeling approach, we were able to determine the groundwater hydrograph separation of the karst spring discharge, at the annual scale and at the event scale (flood). This gives insight into the low flow (Matrix) available for the drinking water demand and the fast flow (Conduit) that generates flash floods. In such a dynamic aquifer, part of the water budget cannot be accounted for by water resources as fast flow is not stored within the aquifer and is not available for the drinking water demand. The results were compared with the current groundwater management to determine whether the withdrawal is sustainable. Depending on whether it is a wet or a dry year, the proportion of slow flow ranges from 27 to 61% of the total discharge, respectively. During floods in high water periods, the proportion of quickflow increases drastically up to more than 90% of the spring discharge. In the case of a 300 mm/d simulated Mediterranean rainfall event, the mean daily peak value may reach 74 m 3 /s. This discharge can be reduced if the aquifer is previously depleted, which increases the storage within the aquifer. Coupling the geological context and the model results opens up future perspectives for the active management of the karst aquifer. disponible pour les besoins en eau potable et l'écoulement rapide (Conduit) qui génère des crues éclairs. Dans les systèmes hyper-dynamiques, une partie de l'eau qui transite ne peut pas être comptabilisée comme ressource en eau car l'écoulement rapide n'est pas stocké dans l'aquifère et n'est donc pas disponible pour alimenter la demande en eau potable. Les résultats sont comparés avec la gestion actuelle des eaux souterraines afin de montrer si l'exploitation de l'eau est durable. Selon l'année, la proportion de débit de base varie entre 27 et 61 % du débit total, respectivement selon une année pluvieuse ou sèche. Lors des crues en période de hautes-eaux, la proportion du débit rapide augmente considérablement jusqu'à plus de 90 % du débit total des sources. Dans le cas d'un événement pluvieux de type Méditerranéen avec 300 mm/j de pluie, le débit moyen maximum simulé avec le modèle atteint 74 m 3 /s. Ce débit peut être réduit si l'aquifère est déjà déprimé, ce qui augmente le stockage de l'eau. Le couplage du contexte géologique et des résultats du modèle ouvre une perspective future pour une gestion active ...

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“…A análise de sistemas em aqüíferos cársticos baseada em estatística de séries temporais foi estabelecida por Mangin (1984) e vem sendo empregada em diversos estudos (Padilla e Bosch, 1995;Laroque et al, 1998;Mathevet, Lepiller, Mangin, 2004;Zare, Nematolladhi, Sedghi, 2005 entre outros). O princípio da técnica é considerar o aqüífero como um filtro que transforma um sinal de entrada (precipitação) num sinal de saída (débito).…”

Section: Introductionunclassified

Comportamento hidrodinâmico de sistemas cársticos na bacia do rio Betari, Município de Iporanga - SP

Ferrari

Karmann

2008

Geol. USP, Sér. cient.

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Application of time-series analyses to the hydrological functioning of an Alpine karstic system: the case of Bange-L’Eau-Morte

Cited by 62 publications

References 12 publications

Technical Note: Glacial influence in tropical mountain hydrosystems evidenced by the diurnal cycle in water levels

Technical Note: Glacial influence in tropical mountain hydrosystems evidenced by the diurnal cycle in water levels

Groundwater management of a highly dynamic karst by assessing baseflow and quickflow with a rainfall-discharge model (Dardennes springs, SE France)

Comportamento hidrodinâmico de sistemas cársticos na bacia do rio Betari, Município de Iporanga - SP

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