| Abstract | Seven catchments of diverse size in Mediterranean Europe were investigated in order to understand the main aspects of their hydrological functioning. The methods included the analysis of daily and monthly precipitation, monthly potential evapotranspiration rates, flow duration curves, rainfall-runoff relationships and catchment internal data for the smaller and more instrumented catchments. The results showed that the catchments were less "dry" than initially considered. Only one of them was really semi-arid throughout the year. All the remaining catchments showed wet seasons when precipitation exceeded potential evapotranspiration, allowing aquifer recharge, "wet" runoff generation mechanisms and relevant baseflow contribution. Nevertheless, local infiltration excess (Hortonian) overland flow was inferred during summer storms in some catchments and urban overland flow in some others. The roles of karstic groundwater, human disturbance and low winter temperatures were identified as having an important impact on the hydrological regime in some of the catchments. |
| Text | 42271 2008 10.1623/hysj.53.3.618 ISI Web of Science WOS 000256310900008 flow regimes runoff generation baseflow Mediterranean INVESTIGATING HYDROLOGICAL REGIMES AND PROCESSES IN A SET OF CATCHMENTS WITH TEMPORARY WATERS IN MEDITERRANEAN EUROPE FRANCESC GALLART; YORGOS AMAXIDIS; PAOLO BOTTI; GIUSEPPE CANÈ; VICTOR CASTILLO; PIPPA CHAPMAN; JOCHEN FROEBRICH; JAVIER GARCÍA PINTADO; JÉRÔME LATRON; PILAR LLORENS; ANTONIO LO PORTO; MANUELA MORAIS; RAMIRO NEVES; PLAMEN NINOV; JEAN LOUIS PERRIN; IRINA RIBAROVA; NIKOLAOS SKOULIKIDIS MARIE GEORGE TOURNOUD CTJA CSIC, Barcelona, Spain CMR IIW, 46,7 km Athens Sounio, Greece EAF, Cagliari, Italy HYDROCONTROL, Capoterra, Italy CEBAS CSIC, Murcia, Spain School of Geography, University of Leeds, Leeds, UK ISAH Universitat Hannover, Hannover, Germany IRSA CNR, Bari, Italy CEE, University of Évora, Évora Codex, Portugal MARETEC, Lisboa, Portugal NIMH BAS, Sofia, Bulgaria IRD CNRS UMII, Montpellier, France Seven catchments of diverse size in Mediterranean Europe were investigated in order to understand the main aspects of their hydrological functioning. The methods included the analysis of daily and monthly precipitation, monthly potential evapotranspiration rates, flow duration curves, rainfall runoff relationships and catchment internal data for the smaller and more instrumented catchments. The results showed that the catchments were less dry than initially considered. Only one of them was really semi arid throughout the year. All the remaining catchments showed wet seasons when precipitation exceeded potential evapotranspiration, allowing aquifer recharge, wet runoff generation mechanisms and relevant baseflow contribution. Nevertheless, local infiltration excess Hortonian overland flow was inferred during summer storms in some catchments and urban overland flow in some others. The roles of karstic groundwater, human disturbance and low winter temperatures were identified as having an important impact on the hydrological regime in some of the catchments. 53 3 Articolo pubblicato hydrological_science_journal.pdf Articolo in rivista published for the International Association of Hydrological Sciences by Blackwell, 0262 6667 Hydrological sciences journal Hydrological sciences journal Hydrol. sci. j. Hydrological sciences journal Journal des sciences hydrologiques antonio.loporto LO PORTO ANTONIO TA.P04.005.006 Gestione a scala di bacino delle risorse idriche e sostenibilita dell uso irriguo in agricoltura |
