Integration of two-phase solid fluid equations in a catchment model for flashfloods, debris flows and shallow slope failures

Research output: Contribution to journalArticleAcademicpeer-review

24 Citations (Scopus)
5 Downloads (Pure)

Abstract

An integrated, modeling method for shallow landslides, debris flows and catchment hydrology is developed and presented in this paper. Existing two-phase debris flow equations and an adaptation on the infinite slope method are coupled with a full hydrological catchment model. We test the approach on the 4 km2 Scaletta catchment, North-Eastern Sicily, where the 1-10-2009 convective storm caused debris flooding after 395 shallow landslides. Validation is done based on the landslide inventory and photographic evidence from the days after the event. Results show that the model can recreate the impact of both shallow landslides, debris flow runout, and debris floods with acceptable accuracy (91 percent inventory overlap with a 0.22 Cohens Kappa). General patterns in slope failure and runout are well-predicted, leading to a fully physically based prediction of rainfall induced debris flood behavior in the downstream areas, such as the creation of a debris fan at the coastal outlet
Original languageEnglish
Pages (from-to)1-16
Number of pages16
JournalEnvironmental modelling & software
Volume105
Early online date9 Apr 2018
DOIs
Publication statusPublished - 1 Jul 2018

Keywords

  • Spatial numerical modelingPhysically-based modelingFlash floodsShallow landslidesDebris flowOpenLISEM
  • ITC-ISI-JOURNAL-ARTICLE

Fingerprint Dive into the research topics of 'Integration of two-phase solid fluid equations in a catchment model for flashfloods, debris flows and shallow slope failures'. Together they form a unique fingerprint.

  • Cite this