Radar-rain gauge merging and discharge data assimilation forflood forecasting in Alpine catchments
Foehn, A. T. (2019). Radar-rain gauge merging and discharge data assimilation for flood forecasting in Alpine catchments. Thèse N° 9777. Ecole Polytechnique Fédérale de Lausanne, Lausanne. 214. https://doi.org/10.5075/epfl-thesis-9777 Floods are responsible for one third of the economic losses induced by natural hazards throughout the world. To better protect the population and infrastructures, flood forecasting systems make us of weather forecasts to foresee floods several days in advance, providing more lead time for preventive measures. In the… Read More
Using a hierarchical model framework to assess climate change and hydropower operation impacts on the habitat of an imperiled fish in the Jinsha River, China
Zhang, P., Qiao, Y., Schineider, M., Chang, J., Mutzner, R., Fluixá-Sanmartín, J., Yang, Z., Fu, R., Chen, X., Cai, L., & Lu, J. (2019). Using a hierarchical model framework to assess climate change and hydropower operation impacts on the habitat of an imperiled fish in the Jinsha River, China. Science of The Total Environment, 646, 1624‑1638. https://doi.org/10.1016/j.scitotenv.2018.07.318 In this publication we address the lack of technical expertise in the geoscience community in the design and construction… Read More
Journée de l’eau – 2019
Le 18 août 2019, la Ville de Sion a organisé la 4ème journée de l’eau sur le domaine des Iles à Sion. Le Crealp a participé activement à cet événement en proposant deux ateliers distincts au public. Le premier atelier consistait à faire découvrir au public que les eaux de boisson peuvent être différenciées en les goûtant et/ou en mesurant leurs caractéristiques physico-chimiques. Les eaux sélectionnées pour la journée étaient la Vichy… Read More
Empirical Tool for the Assessment of Annual Overtopping Probabilities of Dams
Fluixá-Sanmartín, J., Altarejos-García, L., Morales-Torres, A., & Escuder-Bueno, I. (2019). Empirical Tool for the Assessment of Annual Overtopping Probabilities of Dams. Journal of Water Resources Planning and Management, 145(1), 04018083. https://doi.org/10.1061/(ASCE)WR.1943-5452.0001017 This paper presents a simple tool for the assessment of maximum overtopping probabilities of dams. The tool is based on empirical relations between the overtopping probability and the basic hydrological and hydraulic characteristics of the dam-reservoir system: the unit storage capacity, , and the… Read More
Quantification of climate change impact on dam failure risk under hydrological scenarios : A case study from a Spanish dam
Fluixá-Sanmartín, J., Morales-Torres, A., Escuder-Bueno, I., & Paredes-Arquiola, J. (2019). Quantification of climate change impact on dam failure risk under hydrological scenarios : A case study from a Spanish dam. Natural Hazards and Earth System Sciences Discussions, 1‑31. https://doi.org/10.5194/nhess-2019-141 Dam safety is increasingly subjected to the influence of climate change. Its impacts must be assessed through the integration of the various effects acting on each aspect, considering their interdependencies, rather than by a simple accumulation… Read More
Incorporation of a time-dependent risk analysis approach to dam safety management
Fluixá-Sanmartín, J., Morales-Torres, A., Altarejos-García, L., & Escuder-Bueno, I. (2019). Incorporation of a time-dependent risk analysis approach to dam safety management. In J.-P. Tournier, T. Bennett, & J. Bibeau (Éds.), Sustainable and Safe Dams Around the World (1re éd., p. 2384–2392). CRC Press. https://doi.org/10.1201/9780429319778-213 In this publication we address the lack of technical expertise in the geoscience community in the design and construction of photogrammetric systems for monitoring natural hazards at high spatio-temporal resolution. Accordingly, we… Read More
Amélioration du calage du modèle hydrologique du bassin de la grande-eau en suisse avec des produits spatialisés de précipitation, température et couverture de neige
Foehn, A., García Hernández, J., De Cesare, G., & Fluixá-Sanmartín, J. (2018). Amélioration du calage du modèle hydrologique du bassin de la grande-eau en suisse avec des produits spatialisés de précipitation, température et couverture de neige. Presented at the conference De la prévision des crues à la gestion de crise, Avignon, 14-16 novembre 2018. La prévision hydrologique en milieu alpin continue de représenter un défi majeur malgré le développement technologique, notamment en lien avec la… Read More
Review article : Climate change impacts on dam safety
Fluixá-Sanmartín, J., Altarejos-García, L., Morales-Torres, A., & Escuder-Bueno, I. (2018). Review article : Climate change impacts on dam safety. Natural Hazards and Earth System Sciences, 18(9), 2471‑2488. https://doi.org/10.5194/nhess-18-2471-2018 Dams as well as protective dikes and levees are critical infrastructures whose associated risk must be properly managed in a continuous and updated process. Usually, dam safety management has been carried out assuming stationary climatic and non-climatic conditions. However, the projected alterations due to climate change are likely… Read More
Spatial interpolation of precipitation from multiple rain gauge networks and weather radar data for operational applications in Alpine catchments.
Increasing meteorological data availability and quality implies an adaptation of the interpolation methods for data combination. In this paper, we propose a new method to efficiently combine weather radar data with data from two heated rain gauge networks of different quality. The two networks being non-collocated (no common location between the two networks), pseudo cross-variograms are used to compute the linear model of coregionalization for kriging computation. This allows considering the two… Read More
Searching for the optimal drought index and timescale combination to detect drought : A case study from the lower Jinsha River basin, China
Fluixá-Sanmartín, J., Pan, D., Fischer, L., Orlowsky, B., García-Hernández, J., Jordan, F., Haemmig, C., Zhang, F., & Xu, J. (2018). Searching for the optimal drought index and timescale combination to detect drought : A case study from the lower Jinsha River basin, China. Hydrology and Earth System Sciences, 22(1), 889‑910. https://doi.org/10.5194/hess-22-889-2018 Drought indices based on precipitation are commonly used to identify and characterize droughts. Due to the general complexity of droughts, the comparison of indexidentified events with… Read More