Open Access Nat. Hazards Earth Syst. Sci., 13, 2353–2367, 2013 Natural Hazards www.nat-hazards-earth-syst-sci.net/13/2353/2013/ doi:10.5194/nhess-13-2353-2013 and Earth System © Author(s) 2013. CC Attribution 3.0 License. Sciences Integrating spatial, temporal, and size probabilities for the annual landslide hazard maps in the Shihmen watershed, Taiwan C. Y. Wu and S. C. Chen Department of Soil and Water Conservation, National Chung-Hsing University, Taichung 40227, Taiwan Correspondence to: S. C. Chen (
[email protected]) Received: 23 February 2013 – Published in Nat. Hazards Earth Syst. Sci. Discuss.: 19 March 2013 Revised: 13 August 2013 – Accepted: 13 August 2013 – Published: 25 September 2013 Abstract. Landslide spatial, temporal, and size probabilities susceptible to landslides, and heavy rainfall during typhoons were used to perform a landslide hazard assessment in this or storms have indeed caused large landslides of loosened study. Eleven intrinsic geomorphological, and two extrinsic soil (Wu and Chen, 2009). Furthermore, climate change en- rainfall factors were evaluated as landslide susceptibility re- larges bare land areas, thereby increasing the frequency of lated factors as they related to the success rate curves, land- landslides in Taiwan (Chen and Huang, 2010). Because of slide ratio plots, frequency distributions of landslide and non- the uncertainties associated with natural disasters, risk man- landslide groups, as well as probability–probability plots. agement is necessary to minimize losses (Chen et al., 2010). Data on landslides caused by Typhoon Aere in the Shihmen In view of the growing emphasis on risk management in dis- watershed were selected to train the susceptibility model.