Results 41 to 50 of about 81 (71)

Integrating Data into the Hydrogeophysical Model: A Case Study of the Orgeval Critical Zone Observatory

Quantifying the water and heat fluxes at the interface between surface water (SW) and groundwater (GW) is a key issue for hydrogeologists to consider for safe yield and good water quality. However, such quantification with field measurements is not straightforward because the SW-GW changes depend on the boundary conditions and the spatial description ...
Agnès Rivière, Ludovic Bodet, Maxime Gautier, Alexandrine Gesret, Roland Martin, Sylvain Pasquet, Nicolas Radic, Jose Cunha Teixeira, Marine Dangeard, Didier Renard   +9 more
openaire   +1 more source

Chemical weathering and CO₂ consumption rate in a multilayered‐aquifer dominated watershed under intensive farming: The Orgeval Critical Zone Observatory, France

Hydrological Processes, 2018
AbstractThe impact of intensive farming on chemical weathering in the Critical Zone is still an open question. Extensively instrumented and monitored over the last 50 years, the Orgeval Critical Zone Observatory (CZO) in France is an observation site impacted by intensive farming since the 1960s.
Floury, Paul, Gaillardet, Jérôme, Tallec, Gaëlle, Ansart, Patrick, Bouchez, Julien, Louvat, Pascale, Gorge, Caroline   +6 more
openaire   +3 more sources

Backscattering behavior and simulation comparison over bare soils using SIR-C/X-SAR and ERASME 1994 data over Orgeval

Remote Sensing of Environment, 1997
During April 1994, the three-frequency radar system flew on the Space Shuttle Endeavour, known as SIR-C/X-SAR mission (Shuttle Imaging Radar C/X-Synthetic Aperture Radar). Over the Orgeval watershed (France), the ground condition stayed very wet throughout the 5-day SAR mission.
Zribi, Mehrez, Taconet, Odile, Le Hégarat-Mascle, S., Vidal-Madjar, Daniel, Emblanch, Christophe, Loumagne, Cécile, Normand, Michel   +6 more
openaire   +3 more sources

The Orgeval experimental research basin: a tool to analyse hydrological behaviours and impact of changes

2003
Sur ce poster, nous montrons qu'il est nécessaire d'avoir des signaux hydrologiques issus de bassin purs (agricultural et forestier) pour représenter le signal hydrologique de bassin versant mixte et que changer d'échelle change les relations : pour une bonne modélisation du signal hydrologique mixte d'ordre 3 à l'aide de bassins purs et /ou mixtes d ...
Riffard, Marine, Tournebize, Julien, Ansart, Patrick, Chaumont, Cédric, Andréassian, Vazken, Kao, Cyril   +5 more
openaire   +1 more source

Water and energy fluxes at the surface-subsurface interface of the Orgeval , France

2017
Accurately quantifying surface-subsurface water and energy fluxes is challenging because a myriad of morphological and physical factors. The spatial and temporal variability of these factors and nested interfaces lead to patterns in residence time over multiple spatial scales.
Rivière, Agnès, Dangeard, Marine, Flipo, Nicolas, Berrhouma, Asma, Cucchi, Karina, Simon, Nataline, Séraphin, Pierre, Baudin, Aurélien, Lavenant, Nicolas, Bodet, Ludovic, Bour, Olivier   +10 more
openaire   +1 more source

Water and energy fluxes at the surface- subsurface interface of the ORACLE/BVRE Orgeval Observatory

2017
Accurately quantifying surface-subsurface water and energy fluxes is challenging because a myriad of morphological and physical factors subject to spatial and temporal variability, and nested interfaces, lead to patterns in residence time over multiple spatial scales.
Rivière, Agnès, Flipo, Nicolas, Berrhouma, Asma, Simon, Nathalie, Pierre, Séraphin, Cucchi, Karina, Baudin, Aurélien, Lavenant, Nicolas, Bour, Olivier   +8 more
openaire   +1 more source

Summary of research done in watershed of Orgeval, Grand Morin affluent, about streaming-erosion topic

2002
Cette étude a été réalisée pour le Syndicat intercommunal du Grand Morin, dans le cadre d'une étude visant à lutter contre les ruissellements urbains et ruraux et à limiter la contribution des bassins versants et des rus à la montée des eaux. On y présente les caractéristiques générales du bassin, les caractéristiques pluviométriques et hydrologiques ...
Riffard, Marine, Augeard, Bénédicte, Kao, Cyril, Andréassian, Vazken, Ansart, Patrick, Chaumont, Cédric   +5 more
openaire   +1 more source

(trad auto)Publication and transfer of pesticides: example of the Orgeval catchment area

1978
L'étude concerne l'éution et le transfert des pesticides durant un cycle cultural et un cycle hydrologique sur le bassin versant de l'Orgeval, bassin expérimental situé en région de grandes cultures (Brie), dans un secteur où l'utilisation des pesticides est abondante.
openaire   +1 more source

Cost and feasability of sustainable agricultural practices on agricultural farms of Orgeval catchment area

1997
The general objective of the proposed research is to evaluate at the level of a catchment area the cost of introducing sustainable agricultural practices. This research was carried out on one Polish and two French catchment areas :- Orgeval basin is located in the " region de l'Ile de France ", East of the Parisian Basin in the department of Seine et ...
openaire   +1 more source

Modeling the influence of the vadose zone in a geophysical study of the ORGEVAL critical zone observatory

Quantifying the water and heat fluxes at the interface between surface and groundwater (GW) includingthe vadose zone (VZ), surface water (SW) and GW interfaces is a key issue for water and energy resourcemanagement. This is because it ensures a safe yield and good water quality under the ongoing global change.Such quantification with field measurements
Radic, Nicolas, Rivière, Agnès, Gesret, Alexandrine, Bodet, Ludovic, Pasquet, Sylvain, Gautier, Maxime   +5 more
openaire   +1 more source