Strong motion observations and recordings from the great Wenchuan Earthquake

  • Xiaojun Li
  • Zhenghua Zhou
  • Haiyin Yu
  • Ruizhi Wen
  • Dawei Lu
  • Moh Huang
  • Yongnian Zhou
  • Jianwen Cu
Article

Abstract

The National Strong Motion Observation Network System (NSMONS) of China is briefly introduced in this paper. The NSMONS consists of permanent free-field stations, special observation arrays, mobile observatories and a network management system. During the Wenchuan Earthquake, over 1,400 components of acceleration records were obtained from 460 permanent free-field stations and three arrays for topographical effect and structural response observation in the network system from the main shock, and over 20,000 components of acceleration records from strong aftershocks occurred before August 1, 2008 were also obtained by permanent free-field stations of the NSMONS and 59 mobile instruments quickly deployed after the main shock. The strong motion recordings from the main shock and strong aftershocks are summarized in this paper. In the ground motion recordings, there are over 560 components with peak ground acceleration (PGA) over 10 Gal, the largest being 957.7 Gal. The largest PGA recorded during the aftershock exceeds 300 Gal.

Keywords

Wenchuan Earthquake strong motion observation network mobile observation observation array strong motion record PGA 

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Copyright information

© Institute of Engineering Mechanics, China Earthquake Administration and Springer-Verlag GmbH 2008

Authors and Affiliations

  • Xiaojun Li
    • 1
  • Zhenghua Zhou
    • 1
  • Haiyin Yu
    • 1
  • Ruizhi Wen
    • 1
  • Dawei Lu
    • 2
  • Moh Huang
    • 3
  • Yongnian Zhou
    • 1
  • Jianwen Cu
    • 4
  1. 1.Institute of Engineering MechanicsChina Earthquake AdministrationHarbinChina
  2. 2.National Earthquake Infrastructure ServiceBeijingChina
  3. 3.California Geological SurveySacramentoUSA
  4. 4.Yunnan Provincial Earthquake AdministrationKunmingChina
  5. 5.Institute of Engineering MechanicsChina Earthquake AdministrationHarbinChina

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