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Multiple Temporal Scales Assessment in the Hydrological Response of Small Mediterranean-Climate Catchments.
- Source :
- Water (20734441); Jan2020, Vol. 12 Issue 1, p299, 1p
- Publication Year :
- 2020
-
Abstract
- Mediterranean-climate catchments are characterized by significant spatial and temporal hydrological variability caused by the interaction of natural as well human-induced abiotic and biotic factors. This study investigates the non-linearity of rainfall-runoff relationship at multiple temporal scales in representative small Mediterranean-climate catchments (i.e., <10 km<superscript>2</superscript>) to achieve a better understanding of their hydrological response. The rainfall-runoff relationship was evaluated in 43 catchments at annual and event—203 events in 12 of these 43 catchments—scales. A linear rainfall-runoff relationship was observed at an annual scale, with a higher scatter in pervious (R<superscript>2</superscript>: 0.47) than impervious catchments (R<superscript>2</superscript>: 0.82). Larger scattering was observed at the event scale, although pervious lithology and agricultural land use promoted significant rainfall-runoff linear relations in winter and spring. These relationships were particularly analysed during five hydrological years in the Es Fangar catchment (3.35 km<superscript>2</superscript>; Mallorca, Spain) as a temporal downscaling to assess the intra-annual variability, elucidating whether antecedent wetness conditions played a significant role in runoff generation. The assessment of rainfall-runoff relationships under contrasted lithology, land use and seasonality is a useful approach to improve the hydrological modelling of global change scenarios in small catchments where the linearity and non-linearity of the hydrological response—at multiple temporal scales—can inherently co-exist in Mediterranean-climate catchments. [ABSTRACT FROM AUTHOR]
- Subjects :
- LAND use
FARMS
WATERSHEDS
PETROLOGY
DOWNSCALING (Climatology)
RUNOFF
Subjects
Details
- Language :
- English
- ISSN :
- 20734441
- Volume :
- 12
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Water (20734441)
- Publication Type :
- Academic Journal
- Accession number :
- 141517847
- Full Text :
- https://doi.org/10.3390/w12010299