期刊
ENVIRONMENTAL MODELLING & SOFTWARE
卷 105, 期 -, 页码 1-16出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envsoft.2018.03.017
关键词
Spatial numerical modeling; Physically-based modeling; Flash floods; Shallow landslides; Debris flow; OpenLISEM
类别
资金
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Open Fund [SKLGP2018K001]
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 km(2) 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. (C) 2018 Elsevier Ltd. All rights reserved.
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