A cusp catastrophe model of mid-long-term landslide evolution over low latitude highlands of China

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Abstract

Based on a model describing a certain landslide case and catastrophe theory, we derived a cusp catastrophe model and corresponding inversion method to study mid-long-term landslide evolution. According to data of landslides, precipitation, and socioeconomic development from 1976 to 2008, the cusp catastrophe model describing this landslide evolution across a low-latitude highland area in China is obtained with the least squares method. Results of the model indicate that human activity determines landslide intensity. Local precipitation also impacts yearly landslide intensity to some extent, and controls the time when a strong and abrupt change in landslides occurs. During the period 1976-2008, there was an abrupt decrease of landslide intensity during 1994-1995, and an abrupt increase during 1995-1996. Since then, there have been frequent landslides in the low-latitude highland, with greater intensity. All these factors provide a scientific basis for formulating a contingency plan regarding landslide disasters. © 2013 Elsevier B.V.

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Tao, Y., Cao, J., Hu, J., & Dai, Z. (2013). A cusp catastrophe model of mid-long-term landslide evolution over low latitude highlands of China. Geomorphology, 187, 80–85. https://doi.org/10.1016/j.geomorph.2012.12.036

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