Seasonal differencesin a small farmland abandoned catchment, Central Pyrenees

Authors

  • N. Lana-Renault Instituto Pirenaico de Ecología
  • J. Latron Universitat de Girona
  • D. Regüés Instituto Pirenaico de Ecología
  • P. Serrano Instituto Pirenaico de Ecología
  • E. Nadal Instituto Pirenaico de Ecología

DOI:

https://doi.org/10.18172/cig.1205

Abstract

This study shows that the relationships between rainfall and runoff at the event scale in a small farmland abandoned catchment are not linear and that the hydrological response is linked to the antecedent wetness conditions. Rainfall and baseflow discharge have a pronounce influence on the value of the runoff coefficient, while rainfall intensity affects the maximum discharge increment. Watertable data show high seasonal dynamics, with a dry period during summer, a wet period during winter and spring, and a transition period characterised by a high spatial variability. The analysis of the hydrological information at the event scale allows the distinction of three types of event, and reveals the occurrence of different runoff generation processes within the catchment. During dry conditions, the hydrological response is very low and infiltration excess over localised areas is ikely to be the main runoff process. As the catchment gets wetter, saturated excess runoff (and probably subsurface flow) becomes the dominant runoff process.

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Published

03-06-2013

How to Cite

1.
Lana-Renault N, Latron J, Regüés D, Serrano P, Nadal E. Seasonal differencesin a small farmland abandoned catchment, Central Pyrenees. CIG [Internet]. 2013 Jun. 3 [cited 2024 May 22];34:23-37. Available from: https://publicaciones.unirioja.es/ojs/index.php/cig/article/view/1205

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Articles