Development of shallow seismic landslide potential map based on Newmark's displacement: the case study of Chi-Chi earthquake, Taiwan
Resource
Environmental Earth Sciences, 60(4), 775-785
Journal
Environmental Earth Sciences
Pages
775-785
Date Issued
2010
Date
2010
Author(s)
Wang, Kuo-Lung
Abstract
With the development of the geographic information system (GIS), the analysis of regional slope stability under seismic loading has evolved rapidly in recent years. In many studies, the Newmark's method is used for the computation of displacements triggered by an earthquake on a single slope, while for regional analysis, the infinite slope theory is frequently used due to its simplicity when large amount of computations are required. In this research, the infinite slope theory was examined considering various seismic conditions, material properties, and slope geometry to verify the suitability of the method when applied to regional analysis and development of potential shallow landslide maps. The landslide cases induced by Chi-Chi earthquake in central Taiwan were used in this study for verification. It was found that the infinite slope theory is valid for regional analysis when used with discretion. Based on the calculated Newmark's displacement and combining the GIS technique, procedures for the potential map development are established in this study. © 2009 Springer-Verlag.
Subjects
Earthquake; Infinite slope; Landslide; Newmark's displacement; Potential map
Other Subjects
ChiChi earthquake; Displacement potentials; Infinite slope; Material property; Newmark's displacement; Potential map; Regional analysis; Seismic condition; Seismic loadings; Shallow landslide; Shallow seismic; Slope geometry; Earthquakes; Geographic information systems; Landslides; Regional planning; Slope protection; Chi-Chi earthquake 1999; displacement; geological mapping; GIS; landslide; seismic zone; slope angle; slope stability; Taiwan
Type
journal article
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