Application Research of Topographic Slope as A Proxy for Seismic Site-Conditions and Amplification in China Earthquake Risk Assessment

DOI

10.2991/rac-18.2018.58How to use a DOI?

Keywords

Topographic, USGS, Site-condition, Hazard, Risk Assessment, China

Abstract

The seismic site-conditions and amplification, which would lead to the great difference between minor and major damage, was necessary in earthquake risk assessment to derive the earthquake site Peak Ground Acceleration (GPA) partial distribution. The method of using topographic slope as a proxy for seismic site-condition and amplification, which was introduced in USGS open-file report 2007-1357, was applied to generate the Building Earthquake Risk Map for Mainland China in national scale and Earthquake Risk Assessment for Songming City in regional scale. In national scale, Shuttle Radar Topography Mission 30-sec(STRM30) data set in mainland China was employed to obtain topographic information. Two sets of coefficients for predicting Vs30 were used to correlate Vs30 against topographic slope: one for active tectonic regions, and one for stable continental regions. Amplification factors of PGA related with Vs30 and site class were used to generate site GPA map, which was used as hazard partial distribution to participant in the following processes of generating Building Earthquake Risk Map for Mainland China. In regional scale, resource of topography data, resource of ground motion distribution on rock-site and amplification factors is as same as which applied in national scale. According to shear-velocity measurements, two sets of coefficients were employed in Cenozoic area and former strata area. Site GPA map was used as a result of earthquake hazard and the input of following processes of building vulnerability assessment. The study illustrated the feasibly of using topographic slope as a rapid approach for site-conditions and amplification in earthquake risk assessment in national and regional scale.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Jian Zhou
AU  - Xiaojun Li
AU  - Kun Chen
AU  - Xiaoqing Wang
AU  - Jian Wu
PY  - 2018/10
DA  - 2018/10
TI  - Application Research of Topographic Slope as A Proxy for Seismic Site-Conditions and Amplification in China Earthquake Risk Assessment
BT  - Proceedings of the 8th Annual Meeting of Risk Analysis Council of China Association for Disaster Prevention (RAC 2018)
PB  - Atlantis Press
SP  - 370
EP  - 375
SN  - 2352-5428
UR  - https://doi.org/10.2991/rac-18.2018.58
DO  - 10.2991/rac-18.2018.58
ID  - Zhou2018/10
ER  -