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  4. Simulation of braided river elevation model time series with multiple-point statistics
 
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Simulation of braided river elevation model time series with multiple-point statistics

Auteur(s)
Pirot, Guillaume 
Centre d'hydrogéologie et de géothermie 
Editeur(s)
Straubhaar, Julien 
Centre d'hydrogéologie et de géothermie 
Renard, Philippe 
Centre d'hydrogéologie et de géothermie 
In
Geomorphology, Elsevier, 2014/214//148-156
Mots-clés
  • Braided river

  • Topography

  • Modeling

  • Digital elevation mod...

  • Multiple-point statis...

  • Time-series

Résumé
A new method is proposed to generate successive topographies in a braided river system. Indeed, braided river morphologymodels are a key factor influencing river–aquifer interactions and have repercussions in ecosystems, flood risk or water management. It is essentially based on multivariate multiple-point statistics simulations and digital elevation models as training data sets. On the one hand, airborne photography and LIDAR acquired at successive time steps have contributed to a better understanding of the geomorphological processes although the available data are sparse over time and river scales. On the other hand, geostatistics provide simulation tools for multiple and continuous variables, which allow the exploration of the uncertainty of many assumption scenarios. Illustration of the approach demonstrates the ability of multiple-point statistics to produce realistic topographies from the information provided by digital elevation models at two time steps.
URI
https://libra.unine.ch/handle/123456789/7561
DOI
10.1016/j.geomorph.2014.01.022
Autre version
http://dx.doi.org/10.1016/j.geomorph.2014.01.022
Type de publication
Resource Types::text::journal::journal article
Dossier(s) à télécharger
 main article: Pirot_G.-Simulation-20150520.pdf (11.42 MB)
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