Étude des transferts d'eau à l'interieur d'une formation morainique dans le bassin du léman-transferts d'eau dans la zone non saturée

Hamid, Salih H.; Dray, M.; Ferhi, A.; Dorioz, Jean‐Marcel; Normand, M.; Fontes, Jean-Charles

doi:10.1016/0022-1694(89)90025-5

Cited by 10 publications

(5 citation statements)

References 4 publications

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“…The isotopic composition of spring and groundwater samples did not significantly vary over time (Table 2; variations were lower than the 2 error of the 18 O and 2 H analyses), with the exception of VPS. Moreover, temporal variations were attenuated to less than 5% of that observed in the precipitation ( Figure 6), according to the observations made in other aquifer types (e.g., [46][47][48][49]).…”

Section: Isotope Investigations With Regard To Stable Isotopes Composupporting

confidence: 81%

Hydrodynamics in Evaporate-Bearing Fine-Grained Successions Investigated through an Interdisciplinary Approach: A Test Study in Southern Italy—Hydrogeological Behaviour of Heterogeneous Low-Permeability Media

et al. 2018

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Messinian evaporates are widely distributed in the Mediterranean Sea as outcropping sediments in small marginal basins and in marine cores. Progressive filling of subbasins led to the formation of complex aquifer systems in different regions where hypersaline and fresh water coexist and interact in different manner. It also generates a significant diversification of groundwater hydrochemical signature and different microbial communities. In the case study, the hydrogeology and hydrochemistry of the whole system are influenced by good hydraulic connection between the shallower pyroclastic horizon and the underlying evaporate-bearing fine-grained Messinian succession. This is demonstrated by the merge of hydrogeological, chemical, isotopic, and microbiological data. No mixing with deep ascending waters has been observed. As shown by geophysical, hydraulic, and microbiological investigations, the hydraulic heterogeneity of the Messinian bedrock, mainly due to karstified evaporitic interstrata/lenses, causes the hydraulic head to significantly vary with depth. Somewhere, the head increases with the depth’s increase and artesian flow conditions are locally observed. Moreover, the metagenomic investigations demonstrated the existence of a poor hydraulic connection within the evaporate-bearing fine-grained succession at metric and decametric scales, therefore leading to a patchwork of geochemical (and microbiological) subenvironments.

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Section: Isotope Investigations With Regard To Stable Isotopes Composupporting

confidence: 81%

Hydrodynamics in Evaporate-Bearing Fine-Grained Successions Investigated through an Interdisciplinary Approach: A Test Study in Southern Italy—Hydrogeological Behaviour of Heterogeneous Low-Permeability Media

et al. 2018

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“…In the Redon River watershed the average TP concentration during the increased¯ows of Regimes 2 and 3 was proportional to the amount of TP stored in the river at the beginning of the storm event divided by the total¯ow during the event . The TP stored in river has been recognized as the major source of P in some storm¯ows for other rivers (Harms et al, 1978;Svensen et al, 1995).…”

Section: Discussionmentioning

confidence: 99%

“…The sur®cial soils are clayey and loamy and, although they have a high maximum in®ltration capacity, their ability to in®ltrate water varies markedly over the annual cycle. Hamid et al (1989) showed that the soil moisture levels of the upper meter are low in the summer and somewhat increased in the autumn; however, rainfall is in®ltrated during both periods. During winter and spring the sur®cial soils became saturated so that general runo and lateral subsurface¯ow can occur.…”

Section: Study Areamentioning

confidence: 97%

“…The amount of P from diuse sources is dependent on rainfall and the hydrological conditions and land use in the watershed. Phosphorus from both point and diuse sources can be temporarily stored in river sediments and biota (Johnson et al, 1976;Harms et al, 1978;Meals and Cassell, 1978;Pilleboue and Dorioz, 1987;Svensen et al, 1995). The transport of P in river systems can be considered as a discontinuous phenomenon (Verho et al, 1982).…”

Section: Introductionmentioning

confidence: 98%

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Phosphorus storage, transport and export dynamics in the Foron River watershed

Dorioz¹,

Cassell

Orand³

et al. 1998

Hydrol. Process.

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Abstract:Phosphorus (P) export from the Foron River watershed was intensively monitored. Water was analysed for total P, soluble total P, soluble orthophosphate and suspended solids. Watershed soils and river sediments were sampled and the size fraction 50Á2 mm analysed for total P, water extractable P, bioavailable P, 1 minute exchangeable P and P ®xation capacity. Interstitial waters were analysed for soluble total P.Four hydrological conditions recurred, two during low river¯ows and two during increased¯ow. The ®rst occurs in dry weather with a constant or decreasing¯ow over at least seven days and when there is no surface runo. Exported phosphorus, predominately soluble and bioavailable, is from point sources. Phosphorus inputs exceed P export so P accumulates in the river. The second condition occurs when a small storm¯ow increases the average seven-day¯ow to exceed the preceding weekly average. Phosphorus export exceeds P inputs and originates from urban runo, point sources and release of P stored in the river. Exported P is largely particulate but highly bioavailable. The third condition is when substantial runo follows at least a seven-day period of constant or decreasing¯ow. Phosphorus export is from diuse urban runo. All the P stored is exported. Exported P is highly bioavailable. High concentrations and¯uxes of P export are often seen. The fourth condition happens when the soils are wet and increased¯ow is from both urban and agricultural runo. Phosphorus export from diuse agricultural runo predominates and is largely not bioavailable. Phosphorus concentrations are low but export¯uxes are high when¯ows are high. These hydrological conditions, when integrated with concepts of mass balance de®ne a phosphorus export typology comprising four regimes. These regimes explain total phosphorus (TP) storage, transport and export patterns, changes in P speciation and allow identi®cation of probable sources of TP in the Foron river watershed. #

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“…The sediment dynamic of this river has been already intensively studied (Al-Charideh, 1988; 125 Dorioz et al, 1998b;Feuillade and Dorioz, 1992;Hamid et al, 1989;Poulenard et al, 2008) 126 making it a particularly appropriate site for the present exploratory study. The total catchment 127 surface area is 3,300 ha with a land use that consists mainly of forests (1,100 ha) in its upland 128 part and grasslands (1,200 ha) and cultivated farmlands (300 ha) in its lowland part.…”

mentioning

confidence: 99%

Tracing the sources and cycling of phosphorus in river sediments using oxygen isotopes: Methodological adaptations and first results from a case study in France

et al. 2017

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Étude des transferts d'eau à l'interieur d'une formation morainique dans le bassin du léman-transferts d'eau dans la zone non saturée

Cited by 10 publications

References 4 publications

Hydrodynamics in Evaporate-Bearing Fine-Grained Successions Investigated through an Interdisciplinary Approach: A Test Study in Southern Italy—Hydrogeological Behaviour of Heterogeneous Low-Permeability Media

Hydrodynamics in Evaporate-Bearing Fine-Grained Successions Investigated through an Interdisciplinary Approach: A Test Study in Southern Italy—Hydrogeological Behaviour of Heterogeneous Low-Permeability Media

Phosphorus storage, transport and export dynamics in the Foron River watershed

Tracing the sources and cycling of phosphorus in river sediments using oxygen isotopes: Methodological adaptations and first results from a case study in France

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