- -

Using post-flood surveys and geomorphologic mapping to evaluate hydrological and hydraulic models: The flash flood of the Girona River (Spain) in 2007

RiuNet: Institutional repository of the Polithecnic University of Valencia

Share/Send to

Cited by

Statistics

Using post-flood surveys and geomorphologic mapping to evaluate hydrological and hydraulic models: The flash flood of the Girona River (Spain) in 2007

Show simple item record

Files in this item

dc.contributor.author Segura-Beltrán, Francisca es_ES
dc.contributor.author Sanchis Ibor, Carles es_ES
dc.contributor.author Morales-Hernández, Mario es_ES
dc.contributor.author GONZÁLEZ-SANCHIS, MARÍA DEL CARMEN es_ES
dc.contributor.author Bussi, Gianbattista es_ES
dc.contributor.author Ortiz, E. es_ES
dc.date.accessioned 2017-01-12T08:19:13Z
dc.date.available 2017-01-12T08:19:13Z
dc.date.issued 2016-10
dc.identifier.issn 0022-1694
dc.identifier.uri http://hdl.handle.net/10251/76666
dc.description.abstract This paper analyzes the Girona River (Spain) flash flood, occurred on the 12th of October 2007, combining hydrological and hydraulic modeling with geomorphologic mapping and post-flood survey information. This research aims to reproduce the flood event in order to understand and decipher the flood processes and dynamics on a system of prograding alluvial fans. The hydrological model TETIS was used to characterize the shape and dimension of the October 2007 Girona River hydrograph. Subsequently, the flood event was reproduced using the free surface flow module of the model RiverFlow2D. The combination of hydrological and hydraulic models was evaluated using post-flood surveys defining maximum flooded area and flood depths. Then, simulations with different peak discharges were carried out to estimate the hydro-geomorphologic response of the Girona River floodplain, through the identification of the activation thresholds in different geomorphic elements. Results showed that the unit peak discharge of the October 2007 flood event (5 m3 s−1 km−2) was among the largest ever recorded in the area, according to the existing literature. Likewise, the hydraulic model showed a good performance in reproducing the flood event (FitA = 76%, RMSE = 0.65 m and NSE = 0.6), despite the complexity of the case, an ephemeral and ungauged river. The model simulation revealed the existence of an activation pattern of paleochannels and alluvial fans, which was altered by the presence of some anthropogenic disturbances. This multidisciplinary approach proved to be a useful strategy for understanding flash flood processes in ungauged catchments. It allowed understanding the mechanisms governing floods in alluvial fans systems and it represented a solid contribution for early warning plans and risk mitigation policies. es_ES
dc.description.sponsorship This collaborative research was financed with the projects CGL2013-44917-R and SLWAMED CGL2014-58127-C3-2, of the Ministry of Economy and Competitiveness of the Spanish Government. Both projects were co-financed with FEDER funds. The observed rainfall and water discharge records were provided by "Sistema Automatic de Information Hidrologica (SAIH)", which belongs to the CHJ (Spain). This work was also possible due to the kind cooperation of the members of the Plataforma Ciutadana Riu Girona and several anonymous farmers interviewed during the field works. We also thank two anonymous reviewers for their useful and thought-provoking comments. en_EN
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation Ministry of Economy and Competitiveness of the Spanish Government CGL2013-44917-R es_ES
dc.relation Ministry of Economy and Competitiveness of the Spanish Government SLWAMED CGL2014-58127-C3-2 es_ES
dc.relation FEDER funds es_ES
dc.relation.ispartof Journal of Hydrology es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Flash floods es_ES
dc.subject Hydrological modeling es_ES
dc.subject Hydraulic modeling es_ES
dc.subject Alluvial fans es_ES
dc.subject Post-flood surveys es_ES
dc.subject Geomorphologic mapping es_ES
dc.title Using post-flood surveys and geomorphologic mapping to evaluate hydrological and hydraulic models: The flash flood of the Girona River (Spain) in 2007 es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.jhydrol.2016.04.039
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto Universitario de Ingeniería del Agua y del Medio Ambiente - Institut Universitari d'Enginyeria de l'Aigua i Medi Ambient es_ES
dc.contributor.affiliation Universitat Politècnica de València. Centro Valenciano de Estudios sobre el Riego - Centre Valencià d'Estudis sobre el Reg es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería Hidráulica y Medio Ambiente - Departament d'Enginyeria Hidràulica i Medi Ambient es_ES
dc.description.bibliographicCitation Segura-Beltrán, F.; Sanchis Ibor, C.; Morales-Hernández, M.; González-Sanchis, MDC.; Bussi, G.; Ortiz, E. (2016). Using post-flood surveys and geomorphologic mapping to evaluate hydrological and hydraulic models: The flash flood of the Girona River (Spain) in 2007. Journal of Hydrology. 541(Part A):310-329. doi:10.1016/j.jhydrol.2016.04.039 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.1016/j.jhydrol.2016.04.039 es_ES
dc.description.upvformatpinicio 310 es_ES
dc.description.upvformatpfin 329 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 541 es_ES
dc.description.issue Part A es_ES
dc.relation.senia 316655 es_ES


This item appears in the following Collection(s)

Show simple item record