Title

Classification and Sudden Departure Mechanism of High-speed Landslides Caused by the 2008 Wenchuan Earthquake

Published In

Environmental Earth Sciences

Document Type

Citation

Publication Date

2-1-2019

Abstract

The sudden departure mechanism of high-speed landslides has always constituted a popular yet difficult research topic. Therefore, although a systematic classification of high-speed landslides is necessary, particularly since different types of landslides exhibit different mechanisms, an associated methodology has yet to be established. This paper investigates an easily overlooked phenomenon—landslide-quake, which is defined as a local ground vibration triggered by the sudden rupture of the locked segment of a high-speed landslide that occurs immediately prior to the departure of the landslide. This new concept is employed as a foundation for a new classification. The characteristics and formation conditions of landslide-quake are discussed, based upon which the high-speed landslides that occurred following the 2008 Wenchuan earthquake are classified into three different types. Subsequently, the sudden departure mechanism of each type of landslide is analyzed, thereby providing a new method for research on the sudden departure mechanism of high-speed landslides.

Description

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

DOI

10.1007/s12665-019-8083-9

Persistent Identifier

https://archives.pdx.edu/ds/psu/28127

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