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Multi-scale Hydrometeorological Observation and Modelling for Flash-flood Understanding : Volume 11, Issue 2 (11/02/2014)

By Braud, I.

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Book Id: WPLBN0004012012
Format Type: PDF Article :
File Size: Pages 75
Reproduction Date: 2015

Title: Multi-scale Hydrometeorological Observation and Modelling for Flash-flood Understanding : Volume 11, Issue 2 (11/02/2014)  
Author: Braud, I.
Volume: Vol. 11, Issue 2
Language: English
Subject: Science, Hydrology, Earth
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2014
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Branger, F., Ayral, P., Didon-Lescot, J., Coz, J. L., Bouvier, C., Anquetin, S.,...Domergue, J. (2014). Multi-scale Hydrometeorological Observation and Modelling for Flash-flood Understanding : Volume 11, Issue 2 (11/02/2014). Retrieved from http://www.ebooklibrary.org/


Description
Description: Irstea, UR HHLY, Hydrology-Hydraulics, Villeurbanne, France. This paper presents a coupled observation and modelling strategy aiming at improving the understanding of processes triggering flash floods. This strategy is illustrated for the Mediterranean area using two French catchments (Gard and Ardèche) larger than 2000 km2. The approach is based on the monitoring of nested spatial scales: (1) the hillslope scale, where processes influencing the runoff generation and its concentration can be tackled; (2) the small to medium catchment scale (1–100 km2) where the impact of the network structure and of the spatial variability of rainfall, landscape and initial soil moisture can be quantified; (3) the larger scale (100–1000 km2) where the river routing and flooding processes become important. These observations are part of the HyMeX (Hydrological Cycle in the Mediterranean Experiment) Enhanced Observation Period (EOP) and lasts four years (2012–2015). In terms of hydrological modelling the objective is to set up models at the regional scale, while addressing small and generally ungauged catchments, which is the scale of interest for flooding risk assessment. Top-down and bottom-up approaches are combined and the models are used as hypothesis testing tools by coupling model development with data analyses, in order to incrementally evaluate the validity of model hypotheses. The paper first presents the rationale behind the experimental set up and the instrumentation itself. Second, we discuss the associated modelling strategy. Results illustrate the potential of the approach in advancing our understanding of flash flood processes at various scales.

Summary
Multi-scale hydrometeorological observation and modelling for flash-flood understanding

Excerpt
Adamovic, M., Branger, F., Braud, I., and Krier, R.: Does the Kirchner discharge recession analysis provide useful information about catchment hydrological functioning in a Mediterranean context?, Application to the Ardèche catchment (France), J. Hydrol., in preparation, 2014.; Ali, G. A., Roy, A. G., Turmel, M.-C., and Courchesne, F.: Multivariate analysis as a tool to infer hydrologic response types and controlling variables in a humid temperate catchment, Hydrol. Process., 24, 2912–2923, 2010.; Ali, G., Tetzlaff, D., Soulsby, C., and McDonnell, J. J.: Topographic, pedologic and climatic interactions influencing streamflow generation at multiple catchment scales, Hydrol. Process., 26, 3858–3874, 2012a.; Ali, G., Tetzlaff, D., Soulsby, C., McDonnell, J. J., and Capell, R.: A comparison of similarity indices for catchment classification using a cross-regional dataset, Adv. Water Resour., 40, 11–22, 2012b.; Ambroise, B.: Variable active versus contributing areas or periods: a necessary distinction, Hydrol. Process., 18, 1149–1155, 2004.; Anderson, A. E., Weiler, M., Alila, Y., and Hudson, R. O.: Dye staining and excavation of a lateral preferential flow network, Hydrol. Earth Syst. Sci., 13, 935–944, doi:10.5194/hess-13-935-2009, 2009.; Anquetin, S., Braud, I., Vannier, O., Viallet, P., Boudevillain, B., Creutin, J.-D., and Manus, C.: Sensitivity of the hydrological response to the variability of rainfall fields and soils for the Gard 2002 flash-flood event, J. Hydrol., 394, 134–147, 2010.; Ayral, P.-A.: Contribution à la spatialisation du modèle opérationnel de prévision des crues éclair ALHTAIR, Approche spatiale et expérimentale, Applicaton au bassin versant du Gardon d'Anduze, Ph. D. thesis, Université de Provence Aix-Marseille 1, France, 221 pp., 2005 (in French).; Beighley, R., Dunne, T., and Melack, J.: Understanding and modelling basin hydrology: interpreting the hydrological signature, Hydrol. Process., 19, 1333–1353, 2005.; Birkinshaw, S. J. and Webb, B.: Flow pathways in the Slapton Wood catchment using temperature as a tracer, J. Hydrol., 383, 269–279, 2010.; Blöschl, G.: Hydrologic synthesis: accross processes, places and scales, Water Resour. Res., 42, W03S02, doi:10.1029/2005WR004319, 2006.; Blöschl, G. and Sivapalan, M.: Scales issues in hydrological modeling - a review, Hydrol. Process., 9, 251–290, 1995.; Blöschl, G. and Zehe, E.: On hydrological predictability, Hydrol. Process., 19, 3923–3929, 2005.; Bonnifait, L., Delrieu, G., Lay, M. L., Boudevillain, B., Masson, A., Belleudy, P., Gaume, E., and Saulnier, G.-M.: Distributed hydrologic and hydraulic modelling with radar rainfall input: reconstruction of the 8–9 September 2002 catastrophic flood event in the Gard region, France, Adv. Water Resour., 32, 1077–1089, 2009.; Borga, M., Boscolo, P., Zanon, F., and Sangati, M.: Hydrometeorological analysis of the 29 August 2003 flash flood in the Eastern Italian Alps, J. Hydrometeorol., 8, 1049–1067, 2007.; Borga, M., Gaume, E., Creutin, J., and Marchi, L.: Surveying flash floods: gauging the ungauged extremes, Hydrol. Process., 22, 3883–3885, 2008.; Borga, M., Anagnostou, E. N., Blöschl, G., and Creutin, J. D.: Flash floods: observations and analysis of hydro-meteorological controls, J. Hydrol., 394, 1–3, 2010.; Boudevillain, B., Delrieu, G., Galabertier, B., Bonnifait, L., Bouilloud, L., Kirstetter, P.-E., and Mosini, M.-L.: The Cevennes-Vivarais Mediterranean Hydrometeorological Observatory database, Water Resour. Res., 47, W07701, doi:10.1029/2010WR010353, 2011.; Bouilloud, L., Delrieu, G., Boudevillain, B., and Kirstetter, P. E.: Radar rainfall estimation in the context of post-event analysis of flash-flood events, J. Hydrol., 394, 17–27, 2010.; Boulier, J. F. and Vauclin, M.: Soil-water regime described by a bidimension

 

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