Resumen de Significado de las inundaciones en la cuenca del río Guadiana en relación con mecanismos climáticos y su variabilidad
José Antonio Ortega Becerril, Guillermina Garzón Heydt
Hydroclimatology offers an important tool in order to improve our knowledge about the flood producing mechanisms, which can be used to explain historical and palaeohydrological events. Storm cells and mesoscale systems develops into small floods, mainly at tributary streams,and a synoptic scale relates better to Guadiana river floods, dominant in winter. .Macroscale atmospheric configutation can explain flood generation at the Guadiana river and, particularly, the North Atlantic Oscillation (NAO) shows a good relationship between winter floods and a negative NAO phase. Palaeoflood records show event clusters during cooling phases and it is likely that they reflect moments of climatic variability. Circulation mode shows also flood control and in the Guadiana river basin is related to a zonal or transitional mode. The basin has a mixed influence between the two modes what is interpreted as Atlantic or Mediterranean Influence.
