TY - JOUR
T1 - Ground-motion prediction equation for South Korea based on recent earthquake records
AU - Jeong, Ki Hyun
AU - Lee, Han Seon
N1 - Funding Information:
This research was supported by a grant (17AUDP-B066083-05) from the Architecture & Urban Development Research Program funded by the Ministry of Land, Infrastructure and Transport of the Korean government.
Publisher Copyright:
© 2018 Techno-Press, Ltd.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2018/7/1
Y1 - 2018/7/1
N2 - A ground-motion prediction equation (GMPE) for the Korean Peninsula, especially for South Korea, is developed based on synthetic ground motions generated using a ground motion model derived from instrumental records from 11 recent earthquakes of ML > 4.5 in Korea, including the Gyeongju earthquake of Sept. 12. 2016 (ML5.8). PSAs of one standard deviation from the developed GMPE with MW 6.5 at hypocentral distances of 15 km and 25 km are compared to the design spectrum (soil condition, SB) of the Korean Building Code 2016 (KBC), indicating that: (1) PSAs at short periods around 0.2 sec can be 1.5 times larger than the corresponding KBC PSA, and (2) SD's at periods longer than 2 sec do not exceed 8 cm. Although this comparison of the design spectrum with those of the GMPE developed herein intends to identify the characteristics of the scenario earthquake in a lower-seismicity region such as South Korea, it does not mean that the current design spectrum should be modified accordingly. To develop a design spectrum compatible with the Korean Peninsula, more systematic research using probabilistic seismic hazard analysis is necessary in the future.
AB - A ground-motion prediction equation (GMPE) for the Korean Peninsula, especially for South Korea, is developed based on synthetic ground motions generated using a ground motion model derived from instrumental records from 11 recent earthquakes of ML > 4.5 in Korea, including the Gyeongju earthquake of Sept. 12. 2016 (ML5.8). PSAs of one standard deviation from the developed GMPE with MW 6.5 at hypocentral distances of 15 km and 25 km are compared to the design spectrum (soil condition, SB) of the Korean Building Code 2016 (KBC), indicating that: (1) PSAs at short periods around 0.2 sec can be 1.5 times larger than the corresponding KBC PSA, and (2) SD's at periods longer than 2 sec do not exceed 8 cm. Although this comparison of the design spectrum with those of the GMPE developed herein intends to identify the characteristics of the scenario earthquake in a lower-seismicity region such as South Korea, it does not mean that the current design spectrum should be modified accordingly. To develop a design spectrum compatible with the Korean Peninsula, more systematic research using probabilistic seismic hazard analysis is necessary in the future.
KW - Ground motion model
KW - Ground motion prediction equation
KW - Korean Peninsula
KW - Lower-seismicity region
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U2 - 10.12989/eas.2018.15.1.029
DO - 10.12989/eas.2018.15.1.029
M3 - Article
AN - SCOPUS:85050250081
VL - 15
SP - 29
EP - 44
JO - Earthquake and Structures
JF - Earthquake and Structures
SN - 2092-7614
IS - 1
ER -