Characteristics of ground motion records in Zigong mountain array during “5.12” Wenchuan Earthquake

Author

Zhou, Guoliang ; Li, Xiaojun

Author_Institution

Inst. of Eng. Mech., China Earthquake Adm., Harbin, China

fYear

2011

fDate

24-26 June 2011

Firstpage

5795

Lastpage

5798

Abstract

Based on the strong ground motion data recorded at Zigong array during Wenchuan Earthquake on May 12, 2008, the characteristics of peak ground acceleration (PGA) and response spectrum are analyzed. The results indicate that the mountain topography greatly influences the seismic wave propagations. The horizontal PGA increases more greatly than the vertical PGA with increasing elevation of the mountain; however this increase is not monotonous and related to the features of local mountain topography. The influences of topography on acceleration response spectra mainly depend on the source frequency content. The high frequency content beyond 1 Hz of seismic waves has been amplified more greatly. And the results also indicate that the displace response spectra are almost uninfluenced by the mountain topography.

Keywords

earthquakes; seismic waves; seismology; topography (Earth); Wenchuan earthquake; Zigong mountain array; ground motion records characteristics; mountain elevation; mountain topography; peak ground acceleration; response spectrum; seismic wave propagations; Acceleration; Arrays; Earthquake engineering; Electronics packaging; Seismic waves; Surfaces; amplification; earthquake effect; high frequency; mountain topography; peak ground acceleration; response spectrum;

fLanguage

English

Publisher

ieee

Conference_Titel

Remote Sensing, Environment and Transportation Engineering (RSETE), 2011 International Conference on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-9172-8

Type

conf

DOI

10.1109/RSETE.2011.5965671

Filename

5965671