Observatorio de I+D+i UPM

Memorias de investigación
Conferences:
POSTER: 'Analyzing the sensitivity of a USLE based model applied in a Mediterranean river basin under global change and management'.
Year:2014
Research Areas
  • Earth sciences,
  • Information technology and adata processing
Information
Abstract
We performed a sensitivity analysis of the InVEST sediment retention mode calibrated in the Llobregat River basin. We employ the Morris method to determine the relative influence of each input variable or factor (xi) on the output or response (y) through a series of model runs. We applied a sensitivity measure (?*) as an extension of the basic Morris approach, and standard deviation (?) of ?y/?xi at several points in the sample space. Our analysis identified the model parameters related to the natural environment as the most influential for sediment export and retention. Accordingly, small changes in variables such as the magnitude and frequency of extreme rainfall events could cause major changes in sediment dynamics, demonstrating the sensitivity of these dynamics to climate change in Mediterranean basins. Parameters directly related to human activities and decisions (such as cover management factor, C) were also influential, especially for sediment exported. The importance of these human-related parameters in the sediment export process suggests that mitigation measures have the potential to at least partially ameliorate climate-change driven changes in sediment exportation.
International
Si
978-84-937882-8-5
Entity
SCARCE project
Entity Nationality
Sin nacionalidad
Place
Tarragona
Participants
  • Autor: Maria Sanchez Canales (UPM)
  • Autor: Alfredo Lopez Benito (UPM)
  • Autor: Vicenç Acuña (ICRA)
  • Autor: Guy Ziv (University of Leed)
  • Autor: Perrine Hamel (Woods Institute for the Environment, Stanford University)
  • Autor: Rebecca Chaplin-Kramer (Woods Institute for the Environment, Stanford University)
  • Autor: Fco.Javier Elorza Tenreiro (UPM)
Research Group, Departaments and Institutes related
  • Creador: Departamento: Ingeniería Geológica y Minera
S2i 2021 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)