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Title: | Relationship of runoff, erosion and sediment yield to weather types in the Iberian Peninsula |
Author: | Nadal Romero, Estela González-Hidalgo, José Carlos Cortesi, Nicola Desir, Gloria Gómez Calero, José Alfonso Lasanta Martínez, Teodoro Lucía, Ana Marín, C. Martínez Murillo, Juan F. Pacheco Betancur, Edinson Efren Rodríguez Blanco, M. L. Romero Díaz, María Asunción Ruiz Sinoga, José Damián Taguas, Encarnación V. Taboada Castro, Ma. Teresa Úbeda, Xavier Zabaleta, Ane |
Keywords: | Erosió Precipitacions (Meteorologia) Sediments fluvials Hidrologia Península Ibèrica Erosion Precipitations (Meteorology) River sediments Hydrology Iberian Peninsula |
Issue Date: | 1-Jan-2015 |
Publisher: | Elsevier B.V. |
Abstract: | Precipitation has been recognized as one of the main factors driving soil erosion and sediment yield (SY), and its spatial and temporal variability is recognized as one of themain reasons for spatial and temporal analyses of soil erosion variability. The weather types (WTs) approach classifies the continuumof atmospheric circulation into a small number of categories or types and has been proven a good indicator of the spatial and temporal variability of precipitation. Thus, themain objective of this study is to analyze the relationship betweenWTs, runoff, soil erosion (measured in plots), and sediment yield (measured in catchments) in different areas of the Iberian Peninsula (IP) with the aimof detecting spatial variations in these relationships. To this end, hydrological and sediment information covering the IP from several Spanish research teams has been combined, and related with daily WTs estimated by using the NMC/NCAR 40-Year Reanalysis Project. The results showthat, in general, a fewWTs (particularly westerly, southwesterly and cyclonic) provide the largest amounts of precipitation; and southwesterly, northwesterly and westerly WTs play an important role in runoff generation, erosion and sediment yield as they coincide with the wettest WTs. However, this study highlights the spatial variability of erosion and sediment yield in the IP according to WT, differentiating (1) areas under the influence of north and/or north-westerly flows (the north coast of Cantabria and inland central areas), (2) areas under the influence of westerly, southwesterly and cyclonic WTs (western and southwestern IP), (3) areas in which erosion and sediment yield are controlled by easterly flows (Mediterranean coastland), and (4) lastly, a transitional zone in the inland northeast Ebro catchment,wherewe detected a high variability in the effects ofWTs on erosion. Overall results suggest that the use of WTs derived fromobserved atmospheric pressure patterns could be a useful tool for inclusion in future projections of the spatial variability of erosion and sediment yield, as models capture pressure fields reliably. |
Note: | Versió postprint del document publicat a: https://doi.org/10.1016/j.geomorph.2014.09.011 |
It is part of: | Geomorphology, 2015, vol. 228, p. 372-381 |
URI: | http://hdl.handle.net/2445/125179 |
Related resource: | https://doi.org/10.1016/j.geomorph.2014.09.011 |
ISSN: | 0169-555X |
Appears in Collections: | Articles publicats en revistes (Geografia) Publicacions de projectes de recerca finançats per la UE |
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