RED-ACT: Jun. 9, M5.5 New Zealand Earthquake
RED-ACT Report
Real-time Earthquake Damage Assessment using City-scale Time-history analysis
Jun. 9, M5.5 New Zealand Earthquake
Research group of Xinzheng Lu at Tsinghua University (luxz@tsinghua.edu.cn)
First reported at 17:00, Jun. 10, 2019 (Beijing Time, UTC +8)
Acknowledgments and Disclaimer
The authors are grateful for the data provided by GeoNet. This analysis is for research only. The actual damage resulting from the earthquake should be determined according to the site investigation.
Scientific background of this report can be found at:
http://www.luxinzheng.net/software/Real-Time_Report.pdf
1. Introduction to the earthquake event
At Jun. 10 2019 3:24 (Local Time), an M 5.5 (GeoNet) earthquake occurred in New Zealand. The epicenter was located at 168.15 -44.34, with a depth of 5.0 km.
2. Recorded ground motions
24 ground motions near to epicenter of this earthquake were analyzed. The names and locations of the stations can be found Table 1. The maximal recorded peak ground acceleration (PGA) is 10 cm/s/s. The corresponding response spectra in comparison with the design spectra specified in the Chinese Code for Seismic Design of Buildings are shown in Figure 1.
Figure 1 Response spectra of the recorded ground motions with maximal PGA
3. Damage analysis of the target region subjected to the recorded ground motions
Using the real-time ground motions obtained from the strong motion networks and the city-scale nonlinear time-history analysis (see the Appendix of this report), the damage ratios of buildings located in different places can be obtained. The building damage distribution and the human uncomfortableness distribution near to different stations is shown in Figure 2 and Figure 3, respectively. These outcomes can provide a reference for post-earthquake rescue work.
Figure 2 Damage ratio distribution of the buildings near to different stations
Figure 3 Human uncomfortableness distribution near to different stations
Scientific background of this report can be found at: http://www.luxinzheng.net/software/Real-Time_Report.pdf
Table 1 Names and locations of the strong motion stations
No.Station NameLongitudeLatitude
1GLNS_20168.4064-44.8644
2MECS_20169.2331-44.2306
3QTPS_20168.6628-45.0322
4WNPS_20169.1431-44.6947
5_MLZ_20168.1183-45.3667
6TAFS_20167.7192-45.4167
7MOSS_20168.2378-45.6678
8TWAS_20170.0983-44.2547
9_LBZ_20170.1844-44.3856
10MCNS_20170.0972-43.7364
11FJDS_20170.1842-43.3892
12_WHZ_20167.9469-45.8925
13WHAS_20170.3267-43.3161
14RRKS_20167.4725-46.1475
15WHFS_20170.3589-43.2611
16OAMS_20170.9692-45.0997
17_CVZ_20171.0061-44.3831
18DCDS_20170.5022-45.8744
19DUNS_20170.4706-45.9053
20BDCS_20169.7194-46.2492
21WVAS_20170.7372-43.0717
22DKHS_20170.4931-45.9022
23RLNS_20166.6858-45.6875
24TMBS_20170.1958-46.0719
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