2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/26/2021 | 8:30 AM - 10:30 AM | SPATIAL AND TEMPORAL FLOW INTERMITTENCY PATTERNS IN A MEDITERRANEAN BASIN: PRESENT AND FUTURE | Virtual Platform
SPATIAL AND TEMPORAL FLOW INTERMITTENCY PATTERNS IN A MEDITERRANEAN BASIN: PRESENT AND FUTURE
Non-perennial rivers and streams are ubiquitous globally, especially in semi-arid and arid landscapes. Nonetheless, despite their prevalence worldwide, non-perennial systems have been under-represented in the hydrology research, and our understanding of their hydrology is minimal compared to perennial systems. Predicting the availability of freshwater resources is essential, especially in the Mediterranean area, where most of the agricultural systems depend on precipitation and irrigation. The modelling of these dynamic systems remains a challenge. Most of the existing models focus on continuously flowing rivers, without addressing some relevant characteristics of these systems as the spatio-temporal intermittency patterns. In our study, we implemented a watershed-scale hydrological model on a Mediterranean intermittent basin, using the Soil and Water Assessment Tool program. The model was calibrated using data from 2 gauging stations located at the mainstem, and 14 stage recorders dispersed across the river network. Simulation results and observed flow intermittency patterns were analyzed. Furthermore, we also simulated climate change scenarios and compared the flow intermittency patterns with the current ones. Results indicate longer duration of the non-flow period, with most of the stream network turning ephemeral and with few and isolated stretches remaining permanent.
- Flow regime
- Climate change
- Connectivity
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Presenters/Authors
Oriana Llanos
(), Catalan Institute for Water Research (ICRA), ollanos@icra.cat;
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Didac Jorda
(), Catalan Institute for Water Research (ICRA), djorda@icra.cat;
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Ernesto Pasten
(), Catalan Institute for Water Research (ICRA), epasten@icra.cat;
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Laia Verdura
(), Catalan Institute for Water Research (ICRA), lverdura@icra.cat;
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Laurie Boithias
(), GÉOSCIENCES ENVIRONNEMENT TOULOUSE, laurie.boithias@get.omp.eu;
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Adria Riu
(), Catalan Institute for Water Research (ICRA), ariu@icra.cat;
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Vicenç Acuña
(), Catalan Institute for Water Research (ICRA), vacuna@icra.cat;
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Sergi Sabater
(), Catalan Institute for Water Research (ICRA), Girona, Spain, ssabater@icra.cat;
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