Search

Your search keyword '"Molinié G"' showing total 24 results
Start Over Author "Molinié G"
24 results on '"Molinié G"'

2. Comment l'humidité initiale du sol influence-t-elle la réponse hydrologique? Un cas d'étude dans le sud de la France

Author

Uber, M., Vandervaere, J.P., Zin, I., Braud, I., Heisterman, M., Legout, C., Molinié, G., Nord, G., RiverLy (UR Riverly), and Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)

Subjects
HUMIDITE DU SOL, HYDROLOGIE, [SDE]Environmental Sciences, soil water content, hydrology, flash flood, CRUE SOUDAINE
Abstract

International audience; The Cévennes-Vivarais region in southern France is prone to heavy rainfall that can lead to flash floods which are one of the most hazardous natural risks in Europe. The results of numerous studies show that besides rainfall and physical catchment characteristics the catchment's initial soil moisture also impacts the hydrological response to rain events. The aim of this paper is to analyze the relationship between catchment mean initial soil moisture e-ini and the hydrological response that is quantified using the eventbased runoff coefficient ev in the two nested catchments of the Gazel (3.4 km2) and the Claduègne (43 km2). Thus, the objectives are twofold: (1) obtaining meaningful estimates of soil moisture at catchment scale from a dense network of in situ measurements and (2) using this estimate of e-inito analyze its relation with ev calculated for many runoff events. A sampling setup including 45 permanently installed frequency domain reflectancy probes that continuously measure soil moisture at three depths is applied. Additionally, onalert surface measurements at 10 locations in each one of11 plots are conducted. Thus, catchment mean soil moisturecan be confidently assessed with a standard error of the meanof 1:7 vol% over a wide range of soil moisture conditions.The ev is calculated from high-resolution discharge andprecipitation data for several rain events with a cumulativeprecipitation Pcum ranging from less than 5mm to more than80 mm. Because of the high uncertainty of ev associated with the hydrograph separation method, ev is calculated with several methods, including graphical methods, digital filters and a tracer-based method. The results indicate that the hydrological response depends one ini: during dry conditions ev is consistently below 0.1, even for events with high and intense precipitation. Above a threshold of e ini D 34 vol% ev can reach values up to 0.99 but there is a high scatter. Some variability can be explained with a weak correlation of ev with Pcum and rain intensity, but a considerable part of the variability remains unexplained. It is concluded that threshold-based methods can be helpful to prevent overestimation of the hydrological response during dry catchment conditions. The impact of soil moisture on the hydrological response during wet catchment conditions, however, is still insufficiently understood and cannot be generalized based on the present results.

Published
2018
Full Text
View/download PDF

3. Chapitre 4 : Événement à fort impact, une caractérisation socio-hydrométéorologique est-elle possible ?

Author

Sandrine Anquetin, Ruin, I., Molinié, G., Carnel, J. S., Lafon, B., Isabelle Braud, Céline Lutoff, Wilhelm, B., Creutin, J. D., Durand, S., Institut des Géosciences de l’Environnement (IGE), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut de Recherche pour le Développement (IRD)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), RiverLy (UR Riverly), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Pacte, Laboratoire de sciences sociales (PACTE), Sciences Po Grenoble - Institut d'études politiques de Grenoble (IEPG)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), and Laboratoire des EcoSystèmes et des Sociétés en Montagne (UR LESSEM)

Subjects
[SDE]Environmental Sciences
Abstract

National audience; Il s'agit de montrer que certains événements, du fait de leur ampleur vont entraîner une réflexion sur la pertinence du dispositif de prévention des inondations et très souvent une réforme des mesures juridiques. Peut-on alors parler de cycle d'évolution du droit ? Ces événements de grande ampleur sont souvent liés à des grands cours d'eau, ce qui amène à s'interroger sur la pertinence des mesures prévues pour de petits cours d'eau, concernant des territoires.

Published
2018

4. A high space-time resolution dataset linking meteorological forcing and hydro-sedimentary response in a mesoscale Mediterranean catchment (Auzon) of the Ardèche region, France

Author

Nord, Guillaume, Boudevillain, B., Berne, Alban, Branger, F., Braud, Isabelle, Dramais, G., Gerard, Sébastien, Le Coz, Jérôme, Legout, C., Molinié, G., Van Baelen, J., Vandervaere, J.P., Andrieu, Julien, Aubert, C., Caliano, M., Delrieu, G., Grazioli, J., Horner, I., Huza, J., Le Boursicaud, R., Raupach, T., Teuling, A.J., Vincendon, B., Wijbrans, A, Hachani, S., Uber, M., Institut des Géosciences de l’Environnement (IGE), Institut de Recherche pour le Développement (IRD)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Ecole Polytechnique Fédérale de Lausanne (EPFL), Hydrologie-Hydraulique (UR HHLY), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Centre national du machinisme agricole, du génie rural, des eaux et forêts (CEMAGREF), Université Grenoble Alpes - UFR Médecine (UGA UFRM), Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Laboratoire de Météorologie Physique (LaMP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Études des Structures, des Processus d’Adaptation et des Changements de l’Espace (ESPACE), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Avignon Université (AU)-Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Centre national de recherches météorologiques (CNRM), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), OHMCV is supported by the Institut National des Sciences de l’Univers (INSU/CNRS), the French Ministry for Education and Research, ANR-12-JS06-0006,SCAF,Système de caractérisation des agrégats et des flocs dans les cours d'eau et rivières chargées(2012), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut de Recherche pour le Développement (IRD)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Centre National de la Recherche Scientifique (CNRS), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Avignon Université (AU)-Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA), Université de Lausanne (UNIL), Wageningen University and Research [Wageningen] (WUR), Météo France-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Université de Tunis, and Universität Potsdam

Subjects
[SDE]Environmental Sciences, AUZON, ZABR - SITE RIVIERES CEVENOLES, [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces, environment
Abstract

[Departement_IRSTEA]Eaux [TR1_IRSTEA]ARCEAUThe contract of Simon Gérard was funded by the Institut National des Sciences de l’Univers (INSU/CNRS).; International audience; A comprehensive hydrometeorological dataset is presented spanning the period 1 January 2011-31 December 2014 to improve the understanding of the hydrological processes leading to flash floods and the relation between rainfall, runoff, erosion and sediment transport in a mesoscale catchment (Auzon, 116 km 2) of the Mediterranean region. Badlands are present in the Auzon catchment and well connected to high-gradient channels of bedrock rivers which promotes the transfer of suspended solids downstream. The number of observed variables, the various sensors involved (both in situ and remote) and the space-time resolution (∼ km 2 , ∼ min) of this comprehensive dataset make it a unique contribution to research communities focused on hydrom-eteorology, surface hydrology and erosion. Given that rainfall is highly variable in space and time in this region, the observation system enables assessment of the hydrological response to rainfall fields. Indeed, (i) rainfall data are provided by rain gauges (both a research network of 21 rain gauges with a 5 min time step and an operational network of 10 rain gauges with a 5 min or 1 h time step), S-band Doppler dual-polarization radars (1 km 2 , 5 min resolution), disdrometers (16 sensors working at 30 s or 1 min time step) and Micro Rain Radars (5 sensors, 100 m height resolution). Additionally, during the special observation period (SOP-1) of the HyMeX (Hydrolog-ical Cycle in the Mediterranean Experiment) project, two X-band radars provided precipitation measurements at Published by Copernicus Publications. 222 G. Nord et al.: High-resolution hydrometeorological data in a mesoscale Mediterranean catchment very fine spatial and temporal scales (1 ha, 5 min). (ii) Other meteorological data are taken from the operational surface weather observation stations of Météo-France (including 2 m air temperature, atmospheric pressure, 2 m relative humidity, 10 m wind speed and direction, global radiation) at the hourly time resolution (six stations in the region of interest). (iii) The monitoring of surface hydrology and suspended sediment is multi-scale and based on nested catchments. Three hydrometric stations estimate water discharge at a 2-10 min time resolution. Two of these stations also measure additional physico-chemical variables (turbidity, temperature, conductivity) and water samples are collected automatically during floods, allowing further geochemical characterization of water and suspended solids. Two experimental plots monitor overland flow and erosion at 1 min time resolution on a hillslope with vineyard. A network of 11 sensors installed in the intermittent hydrographic network continuously measures water level and water temperature in headwater subcatchments (from 0.17 to 116 km 2) at a time resolution of 2-5 min. A network of soil moisture sensors enables the continuous measurement of soil vol-umetric water content at 20 min time resolution at 9 sites. Additionally, concomitant observations (soil moisture measurements and stream gauging) were performed during floods between 2012 and 2014. Finally, this dataset is considered appropriate for understanding the rainfall variability in time and space at fine scales, improving areal rainfall estimations and progressing in distributed hydrological and erosion modelling.

Published
2017
Full Text
View/download PDF

5. How to make possible a socio-hydrometeorological definition of high-impact weather event?

Author

Sandrine Anquetin, Ruin, I., Molinié, G., Carnel, J. S., Lafon, B., Isabelle Braud, Céline Lutoff, Wilhelm, B., Creutin, J. D., Institut des Géosciences de l’Environnement (IGE), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut de Recherche pour le Développement (IRD)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), RiverLy (UR Riverly), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Pacte, Laboratoire de sciences sociales (PACTE), and Sciences Po Grenoble - Institut d'études politiques de Grenoble (IEPG)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])

Subjects
[SDE]Environmental Sciences
Abstract

International audience; In the context of global changes, the occurrence of extreme weather events is likely to increase. The risk associated with such event will thus strongly depend on their impacts on society and goods. Social and natural scientist agree that integrated assessments of hazard and consequent impact are necessary to anticipate and mitigate risks. But how can we define a high-impact weather event? This work proposes to examine several approaches for a quantified and objective definition of these events. Such approaches impose a better understanding of the interrelations between the hazards and their associated socio-economical impacts. They thus need to deal with multi-disciplinary observations to describe and to understand these links that are strongly associated with the affected populations and their capacity to cope and to anticipate the hazard. This work is based on long-term observations and modeling of flash-flood events that take place in the Southeastern part of France. A first cross-analysis between the several international and national databases presents a large heterogeneity of the available multi-disciplinary data (i.e. data dealing with the hazard (duration ; precipitation amount) and data dealing with the impacts (i.e. number of fatalities, damages, number of affected counties), making difficult such interdisciplinary studies. We thus propose to guide the definition of these high-impact weather events by the resonance of the spatial and temporal scales associated with the hazard and the impacts. To do so, precipitation observations, as well as socio-economical (i.e. number of fatalities, damages, number of affected counties) and media (i.e. TV broadcast) data are used.

Published
2016

6. Water level and response time of rivers during flash floods derived from a nested network in the Claduègne Mediterranean catchment (43 km2)

Author

Gonzalez Sosa, E., Braud, Isabelle, Molinié, G., Nord, Guillaume, Vandervaere, J.P., Uber, M., Irstea Publications, Migration, Hydrologie-Hydraulique (UR HHLY), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), UNIVERSIDAD AUTONOMA QUERETARO MEX, Partenaires IRSTEA, Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Laboratoire d'étude des transferts en hydrologie et environnement (LTHE), Centre National de la Recherche Scientifique (CNRS)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Observatoire des Sciences de l'Univers de Grenoble (OSUG ), and Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])

Subjects
[SDE] Environmental Sciences, [SDE]Environmental Sciences, CLADUEGNE
Abstract

International audience; Flash floods are natural hazards that affect the Mediterranean region. They are caused by intense rainfall events but catchments characteristics are also influential on the hydrological response. In order to study the respective roles of rainfall, land use, geology and soil moisture on this hydrological response at various scales, a high spacetime resolution hydrometeorological experimental monitoring system was set in the Mediterranean Claduègne catchment (43 km2), located in the Ardèche catchment, south-east France between 2011 and 2014 (Braud et al., 2014; Nord et al., in prep). Rainfall was monitored using a high resolution rainfall network (Hpiconet) composed of 21 rain gauges with 1 min time step covering an area of about 100 km2. The monitoring of surface hydrology include water level measurements at the outlet of 10 subcatchments ranging from 0.2 to 2.2 km2 and hydrometric measurements (water level, discharge) at the outlet of 3 catchments (Gazel: 3.4 km2, SJ1: 12 km2 and Claduègne: 43 km2). The 10 subcatchments as well as the Gazel and SJ1 catchments are all embedded within the Claduègne catchments. The location of the 10 subcatchments was chosen to sample different combinations of geology, land use and pedology within the Claduègne catchment. In particular, 4 of these subcathments are located within the Gazel catchment and 2 are located within the SJ1 catchment. Soil moisture data with a 20 minutes time step at depths 10cm, 20-25 and 30-50 cm is also available at nine locations, sampling different combinations of land use and geology. Catchment rainfall was computed from the Hpiconet data for each sub-catchment and all rainfall events using the Thiessen polygons method. The corresponding hydrological response was extracted for the whole data sets. For each event, rainfall characteristics describing rainfall amount and intensity, antecedent rainfall (and thus initial soil moisture) were computed. When a hydrological response was observed, reaction time (time between the initiation of rainfall and a significant water level rise) and rising time (time between the water level significant rise and peak water level) were derived. The results are impacted by the cross sections of the river. Some events show that the reaction and rising time follow an expected upstream-downstream propagation into the river network, while, for other events, this is not the case independently of homogeneity and spatial distribution of precipitation cells. Statistical analyses were also performed to search for relationships between rainfall characteristics, antecedent soil moisture, catchments characteristics and the hydrological response. The results of the analysis are also used to assess the validity of the underlying physical hypotheses of the IRIP method (Intense Pluvial Runoff Indicators, Lagadec et al., 2016) allowing the mapping of areas prone to runoff generation, transfer and accumulation.

Published
2016

7. HyMeX-SOP1, the field campaign 1 dedicated to 2 heavy precipitation and flash flooding in 3 the northwestern Mediterranean

Author

Ducrocq, V, Braud, I., Davolio, S., Ferretti, Rossella, Flamant, C., Jansa, A., Kalthoff, N., Richard, E., Taupier Letage, I., Ayral, P. A., Belamari, S., Berne, A., Borga, M., Boudevillain, B., Bock, O., Boichard, J. L., Bouin, M. N., Bousquet, O., Bouvier, C., Chiggiato, J., Cimini, D., Corsmeier, U., Coppola, L., Cocquerez, P., Defer, E., Delanoë, J., Di Girolamo, P., Doerenbecher, A., Drobinski, P., Dufournet, Y., Fourrié, N., Gourley, J. J., Labatut, L., Lambert, D., Le Coz, J., Marzano, F. S., Molinié, G., Montani, A., Nord, G., Nuret, M., Ramage, K., Rison, B., Roussot, O., Said, F., Schwarzenboeck, A., Testor, P., Van Baelen, J., Vincendon, B., Aran, M., and Tamayo, J.

Subjects
heavy precipitation, natural hazards, field experiment
Published
2014

8. Rainfall regimes in a Mountainous Mediterranean Region: Statistical analysis at short time steps

Author

Molinié, G., Ceresetti, D., Sandrine Anquetin, Creutin, J. D., Boudevillain, B., HMCI, Laboratoire d'étude des transferts en hydrologie et environnement (LTHE), Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique de Grenoble (INPG)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique de Grenoble (INPG)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), and Talour, Pascale

Subjects
[SDU.STU.GM] Sciences of the Universe [physics]/Earth Sciences/Geomorphology, ComputerApplications_GENERAL, Data_FILES, [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology, ComputingMilieux_MISCELLANEOUS
Abstract

This paper presents an analysis of the rainfall regime of a Mediterranean mountainous region of south-eastern France. The rainfall regime is studied on temporal scales from hourly to yearly using daily and hourlyrain gauge data of 43 and 16 years, respectively. The domain is 200 3 200 km2 with spatial resolution of hourlyand daily rain gauges of about 8 and 5 km, respectively. On average, yearly rainfall increases from about0.5 m yr21 in the large river plain close to the Mediterranean Sea to up to 2 m yr21 over the surroundingmountain ridges. The seasonal distribution is also uneven: one-third of the cumulative rainfall occurs duringthe autumn season and one-fourth during the spring. At finer time scales, rainfall is studied in terms of rain–no-rain intermittency and nonzero intensity. The monthly intermittency (proportion of dry days per month)and the daily intermittency (proportion of dry hours per day) is fairly well correlated with the relief. Thehigher the rain gauges are, the lower the monthly and daily intermittencies are. The hourly and daily rainfallintensities are analyzed in terms of seasonal variability, diurnal cycle, and spatial pattern. The differencebetween regular and heavy-rainfall event is depicted by using both central parameters and maximum values ofintensity distributions. The relationship between rain gauge altitudes and rainfall intensity is grossly invertedrelative to intermittency and is also far more complex. The spatial and temporal rainfall patterns depictedfrom rain gauge data are discussed in the light of known meteorological processes affecting the study region

Published
2011

9. Scaling properties of heavy rainfall at short duration: A regional analysis

Author

Ceresetti, D., Molinié, G., Creutin, J.-D., Laboratoire d'étude des transferts en hydrologie et environnement (LTHE), Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique de Grenoble (INPG)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), HMCI, Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique de Grenoble (INPG)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Observatoire des Sciences de l'Univers de Grenoble (OSUG), ANR: VMC,VMC, Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG), and ANR-07-VULN-0006,MEDUP,Forecast and projection in climate scenario of Mediterranean intense events: Uncertainties and Propagation on environment.(2007)

Subjects
probability distribution, [SDE.MCG]Environmental Sciences/Global Changes, rainfall, regionalization, extreme modeling, [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology, orography, Physics::Geophysics, temporal scaling, heavy tails
Abstract

International audience; The aim of this paper is to assess the scaling properties of heavy point rainfall with respect to duration. In the region of interest, the probability distribution tails of hourly to daily rainfall display log-log linearity. The log-log linearity of tails is a feature of fat-tailed distributions. The conservation of this property throughout the scales will be investigated in the framework of scale-invariant analysis. Evidence of the scaling of heavy rainfall is shown for one particularly long rainfall series through the conservation of the survival probability shape at durations in the range 1-24 h. An objective method is implemented to estimate the hyperbolic-tail parameters of rainfall distributions. This method is automatized and detects the lower bound above which the distributions exhibit power law tails and determines the power law exponent α using a maximum likelihood estimator. The application of unbiased estimation methods and scale-invariant properties for the estimation of the power law exponent provides a significant reduction of the intergage power law variability. This achievement is essential for a correct use of geostatistical approaches to interpolate the power law parameters at ungaged sites. The method is then applied to the rain gage network in the Cévennes-Vivarais region, a Mediterranean mountainous region located in southern France. The maps show thicker rainfall distribution tails in the flat area between the seashore and the foothill. It is shown that in a flat region closer to the Mediterranean Sea the rainfall distribution tails are hyperbolic and the power law exponent is quasi-constant with duration, whereas, over the mountain, the power law behavior is less defined. The physical reasons for such results and the consequences for the statistical modeling of heavy rainfall are then discussed, providing an innovative point of view for the comprehension of the rainfall extremes behavior at different temporal scales.

Published
2010
Full Text
View/download PDF

10. An overview of the lightning and atmospheric electricity observations collected in southern France during the HYdrological cycle in Mediterranean EXperiment (HyMeX), Special Observation Period 1

Author

Defer, E., primary, Pinty, J.-P., additional, Coquillat, S., additional, Martin, J.-M., additional, Prieur, S., additional, Soula, S., additional, Richard, E., additional, Rison, W., additional, Krehbiel, P., additional, Thomas, R., additional, Rodeheffer, D., additional, Vergeiner, C., additional, Malaterre, F., additional, Pedeboy, S., additional, Schulz, W., additional, Farges, T., additional, Gallin, L.-J., additional, Ortéga, P., additional, Ribaud, J.-F., additional, Anderson, G., additional, Betz, H.-D., additional, Meneux, B., additional, Kotroni, V., additional, Lagouvardos, K., additional, Roos, S., additional, Ducrocq, V., additional, Roussot, O., additional, Labatut, L., additional, and Molinié, G., additional

Published
2015
Full Text
View/download PDF

12. An overview of the lightning and atmospheric electricity observations collected in Southern France during the HYdrological cycle in Mediterranean EXperiment (HyMeX), Special Observation Period 1

Author

Defer, E., primary, Pinty, J.-P., additional, Coquillat, S., additional, Martin, J.-M., additional, Prieur, S., additional, Soula, S., additional, Richard, E., additional, Rison, W., additional, Krehbiel, P., additional, Thomas, R., additional, Rodeheffer, D., additional, Vergeiner, C., additional, Malaterre, F., additional, Pedeboy, S., additional, Schulz, W., additional, Farges, T., additional, Gallin, L.-J., additional, Ortéga, P., additional, Ribaud, J.-F., additional, Anderson, G., additional, Betz, H.-D., additional, Meneux, B., additional, Kotroni, V., additional, Lagouvardos, K., additional, Roos, S., additional, Ducrocq, V., additional, Roussot, O., additional, Labatut, L., additional, and Molinié, G., additional

Published
2014
Full Text
View/download PDF

13. A semi-deterministic scheme to produce IC/CG lightnings in a 3D cloud resolving model

Author

Pinty, Jean-Pierre, Molinié, G., Barthe, Christelle, Roux, R., Laboratoire d'aérologie (LAERO), Centre National de la Recherche Scientifique (CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Équipe Cyclones, and Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Observatoire Midi-Pyrénées (OMP)

Subjects
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph]
Abstract

9-13 juin 2003

Published
2003

14. Si un lion pouvait parler, nous ne pourrions le comprendre. Mots, jeux linguistiques, idéologies locales et cosmopolitisme

Author

Adam J.M, Santone L, Molinié G, Duranti, A, Matera, V, Amselle, J.L, Kilani, M, Winkin, Y, Peressini, M, Gohard-Radenkovic, A - Radenkovic, M, Stalder, P, Merlino, S - Mondada, L, Gavioli, L - Niemants, N, Veronesi, D, Dakhlia, J, Bologna, C, Mohafez, A - Mirabdolbaghi, Z, Fusaschi, M - Pompeo, F, Londei, D, Santone, L, MATERA, VINCENZO, Adam J.M, Santone L, Molinié G, Duranti, A, Matera, V, Amselle, J.L, Kilani, M, Winkin, Y, Peressini, M, Gohard-Radenkovic, A - Radenkovic, M, Stalder, P, Merlino, S - Mondada, L, Gavioli, L - Niemants, N, Veronesi, D, Dakhlia, J, Bologna, C, Mohafez, A - Mirabdolbaghi, Z, Fusaschi, M - Pompeo, F, Londei, D, Santone, L, and MATERA, VINCENZO

Published
2013

22. Chapter 4: High-impact Weather Events: Is a Socio-hydrometeorological Characterization Possible?

Author

Sandrine Anquetin, Ruin, I., Molinié, G., Carnel, J. S., Lafon, B., Isabelle Braud, Céline Lutoff, Wilhelm, B., Creutin, J. D., Durand, S., Institut des Géosciences de l’Environnement (IGE), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut de Recherche pour le Développement (IRD)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), RiverLy (UR Riverly), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Pacte, Laboratoire de sciences sociales (PACTE), Sciences Po Grenoble - Institut d'études politiques de Grenoble (IEPG)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), and Laboratoire des EcoSystèmes et des Sociétés en Montagne (UR LESSEM)

Subjects
[SDE]Environmental Sciences
Abstract

International audience; Il s'agit de montrer que certains événements, du fait de leur ampleur vont entraîner une réflexion sur la pertinence du dispositif de prévention des inondations et très souvent une réforme des mesures juridiques. Peut-on alors parler de cycle d'évolution du droit ? Ces événements de grande ampleur sont souvent liés à des grands cours d'eau, ce qui amène à s'interroger sur la pertinence des mesures prévues pour de petits cours d'eau, concernant des territoires.

23. Si un lion pouvait parler, nous ne pourrions le comprendre. Mots, jeux linguistiques, idéologies locales et cosmopolitisme

Author

MATERA, VINCENZO, Adam J.M, Santone L, Molinié G, Duranti, A, Matera, V, Amselle, J.L, Kilani, M, Winkin, Y, Peressini, M, Gohard-Radenkovic, A - Radenkovic, M, Stalder, P, Merlino, S - Mondada, L, Gavioli, L - Niemants, N, Veronesi, D, Dakhlia, J, Bologna, C, Mohafez, A - Mirabdolbaghi, Z, Fusaschi, M - Pompeo, F, Londei, D, Santone, L, Duranti A, Matera V, Amselle J.L, Kilani M, Winkin Y, Peressini M, Gohard-Radenkovic A - Radenkovic M, Stalder P, Merlino S - Mondada L, Gavioli L - Niemants N, Veronesi D, Dakhlia J, Bologna C, Mohafez A - Mirabdolbaghi Z, Fusaschi M - Pompeo F, and Londei D

Subjects
langage, culture, relativisme culturel, ethnographie, cosmopolitisme, ethnographie, M-DEA/01 - DISCIPLINE DEMOETNOANTROPOLOGICHE, relativisme culturel, cosmopolitisme, langage, culture
Abstract

discussione critica delle tesi di L. Wittgenstein sul rapporto fra linguisggio e forme di vita nel quadro di una prospettiva cosmopolita

Published
2013

24. [Instrumental dilation and transparieto-hepatic cholangioscopy for stenosis of a choledocho-duodenal anastomosis with gallstone formation].

Author

Liguory C, Bonnel D, Canard JM, Lemaire A, Vergeau B, and Molinié G

Subjects
Aged, Constriction, Pathologic therapy, Dilatation, Drainage, Endoscopy, Female, Fiber Optic Technology, Humans, Recurrence, Cholangitis therapy, Common Bile Duct surgery, Duodenum surgery, Gallstones surgery, Postoperative Complications therapy
Abstract

A 94-year old woman presented with gallstone formation above a stenotic choledoco-duodenal anastomosis, responsible for episodes of cholangitis. After percutaneous biliary tract drainage, the anastomosis was dilated with an angioplasty catheter. As several stones persisted despite washing out, percutaneous cholangioscopy was performed. To introduce a small fibroscope into the biliary canals, transhepatic dilation up to 28 F was necessary. The last stones were pushed into the duodenum with the endoscope. Freedom of the biliary tract and patency of the anastomosis were ascertained.

Published
1986

Catalog

Books, media, physical & digital resources
See catalog results