Special Section on Remote Sensing of the Wenchuan Earthquake

Hazard assessment on secondary mountain-hazards triggered by the Wenchuan earthquake

[+] Author Affiliations
Yongshun Han

School of Architecture and Urban Planning, Hunan University of Science and Technology, Taoyuan, Xiangtan, Hunan 411201 China

Hongjiang Liu

School of City Management and Environment, Yunnan University of Finance and Economics, Kunming, Yunnan 650221 China

Peng Cui, Fenghuan Su

Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, No. 9, Block 4, Renmingman Road, Chengdu, Sichuan 610041 China

Dongsheng Du

School of Architecture and Urban Planning, Hunan University of Science and Technology, Taoyuan, Xiangtan, Hunan 411201 China

J. Appl. Remote Sens. 3(1), 031645 (May 26, 2009). doi:10.1117/1.3154419
History: Received November 1, 2008; Revised May 11, 2009; Accepted May 11, 2009; May 26, 2009; Online May 26, 2009
Text Size: A A A

Abstract

The Wenchuan earthquake triggered large numbers of secondary mountain hazards which caused great casualties and losses. Based upon remote sensing interpretation, field investigation, and disaster surveys, we describe the general situation of the earthquake, study the spatial distribution of the secondary mountain hazards, establishe a hazard degree index model according to disaster-forming factors and seismic parameters, and make a hazard assessment on the secondary mountain hazards. Moreover, using geographical information system and remote sensing technologies and the principle of regional factors, the study area is classified into four hazard zones: no-hazard zone, low-hazard zone, moderate-hazard zone, and high-hazard zone. The results show that the high-hazard zone is distributed along the three main fault zones of the Longmen Mountain, mainly along the Minjiang River valley, the Yuzi Creek, the Jianjiang River valley, and other river valley areas. The other hazard zones are distributed outside the high-hazard zone in a ring shape, respectively, and their hazard degrees decrease gradually, especially in the low elevation areas and the Chengdu Plain where the hazard degree is the lowest. The developmental trend of secondary mountain hazards is analyzed in view of geodynamics.

© 2009 Society of Photo-Optical Instrumentation Engineers

Citation

Yongshun Han ; Hongjiang Liu ; Peng Cui ; Fenghuan Su and Dongsheng Du
"Hazard assessment on secondary mountain-hazards triggered by the Wenchuan earthquake", J. Appl. Remote Sens. 3(1), 031645 (May 26, 2009). ; http://dx.doi.org/10.1117/1.3154419


Figures

Tables

Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

PubMed Articles
Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.