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Hualien earthquake 2018

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Journal Article

Shallow Subsurface Structure in the Hualien Basin and Relevance to the Damage Pattern and Fault Rupture during the 2018 Hualien Earthquake

Masumi Yamada, Ikuo Cho, Chun‐Hsiang Kuo, Che‐Min Lin, Ken Miyakoshi, Yujia Guo, Takumi Hayashida, Yasuhiro Matsumoto, Jim Mori, Yin‐Tung Yen, Keng‐Chang Kuo
Published: 22 September 2020
Bulletin of the Seismological Society of America (2020) 110 (6): 2939–2952.
DOI: https://doi.org/10.1785/0120200063
...Masumi Yamada; Ikuo Cho; Chun‐Hsiang Kuo; Che‐Min Lin; Ken Miyakoshi; Yujia Guo; Takumi Hayashida; Yasuhiro Matsumoto; Jim Mori; Yin‐Tung Yen; Keng‐Chang Kuo ABSTRACT The 2018 M w 6.4 Hualien earthquake generated a large peak‐to‐peak velocity of over 2 m / s , with a period of 3 s at the south end...
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Performance of a Low‐Cost Earthquake Early Warning System ( P ‐Alert) and Shake Map Production during the 2018 M w 6.4 Hualien, Taiwan, Earthquake

Yih‐Min Wu, Himanshu Mittal, Ting‐Chung Huang, Benjamin M. Yang, Jyh‐Cherng Jan, Sean Kuanhsiang Chen
Published: 05 September 2018
Seismological Research Letters (2019) 90 (1): 19–29.
DOI: https://doi.org/10.1785/0220180170
...Yih‐Min Wu; Himanshu Mittal; Ting‐Chung Huang; Benjamin M. Yang; Jyh‐Cherng Jan; Sean Kuanhsiang Chen ABSTRACT On 6 February 2018, an M w 6.4 earthquake struck near the city of Hualien, in eastern Taiwan with a focal depth of 10.4 km. The earthquake caused strong shaking and severe damage to many...
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Comparison of Near‐Fault Velocity Pulse‐Like Ground Motions from the 2018 M w 6.4 Hualien, Taiwan, Earthquake with the Next Generation Attenuation (NGA)‐West2 Ground‐Motion Models and Directivity Models

Xiaofen Zhao, Zengping Wen, Junju Xie, Quancai Xie, Kuo‐En Ching
Published: 12 January 2021
Bulletin of the Seismological Society of America (2021) 111 (2): 686–703.
DOI: https://doi.org/10.1785/0120200141
... was calculated using the earthquake source model (Fig.  1 ) provided by Wen et al. (2019) . Wen et al. (2019) investigated the focal mechanism of the Hualien event by inverting teleseismic body waves and forward modeling Global Positioning System coseismic deformation. The results show that the 2018...
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Spatiotemporal Evolution of the 2018 M w 6.4 Hualien Earthquake Sequence in Eastern Taiwan

Shujun Liu, Chi‐Chia Tang, Chieh‐Hung Chen, Rui Xu
Published: 01 May 2019
Seismological Research Letters (2019) 90 (4): 1446–1456.
DOI: https://doi.org/10.1785/0220180389
... days before and 30 days after the 2018 M w 6.4 Hualien earthquake, which occurred near the Milun fault (MF) in eastern Taiwan. By applying the matched‐filter technique to continuous waveform data, we identified approximately two times more earthquakes than listed in the standard Central Weather Bureau...
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Preface to the Focus Section on the 6 February 2018 M w 6.4 Hualien, Taiwan, Earthquake

Kuo‐Fong Ma, Yih‐Min Wu
Published: 12 December 2018
Seismological Research Letters (2019) 90 (1): 15–18.
DOI: https://doi.org/10.1785/0220180356
... of this strong motion, especially in relation to building damage. Exactly 2 yrs before the 6 February 2018 Hualien earthquake, the 6 February 2016 M w  6.4 Meinong earthquake occurred in southwestern Taiwan. This earthquake also generated large pulse‐like velocity motions that were responsible for much...
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Coseismic Deformation of the 6 February 2018 M w 6.2 Hualien Earthquake Based on Strong‐Motion Recordings

Shengze Tian, Paolo Gardoni, Wancheng Yuan
Published: 28 November 2018
Seismological Research Letters (2019) 90 (1): 108–117.
DOI: https://doi.org/10.1785/0220180235
.... Statistical measurements as well as plotted recovered displacements are taken into consideration to evaluate the quality of the recovery. Forty‐two strong‐motion stations in the selected region of Hualien County which recorded the 6 February 2018 M w 6.2 Hualien earthquake are applied to recover the ground...
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Coseismic Velocity Variations Associated with the 2018 M w 6.4 Hualien Earthquake Estimated Using Repeating Earthquakes

En‐Jui Lee, Po Chen, Dawei Mu, Ruey‐Juin Rau, Che‐Min Lin
Published: 21 November 2018
Seismological Research Letters (2019) 90 (1): 118–130.
DOI: https://doi.org/10.1785/0220180230
... algorithm (cuNCC) to discover potential repeating earthquakes that occurred before and after the 2018 M w 6.4 Hualien earthquake. After accurately relocating the repeating events and quantifying time shifts caused by location and origin‐time differences, two repeating event clusters (one doublet and one...
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Shallow Fault Rupture of the Milun Fault in the 2018 M w 6.4 Hualien Earthquake: A High‐Resolution Approach from Optical Correlation of Pléiades Satellite Imagery

Yu‐Ting Kuo, Yu Wang, James Hollingsworth, Shao‐Yi Huang, Ray Y. Chuang, Chih‐Heng Lu, Yi‐Chun Hsu, Hsin Tung, Jiun‐Yee Yen, Chung‐Pai Chang
Published: 07 November 2018
Seismological Research Letters (2019) 90 (1): 97–107.
DOI: https://doi.org/10.1785/0220180227
..., which broke during the 2018 Hualien earthquake ( M w 6.4) in eastern Taiwan. Correlation of pre‐ and postearthquake stereo Pléiades images reveals detailed 3D surface displacements along the 8‐km‐long Milun fault, with maximum ∼ 1 m left‐lateral offsets across the fault. Along the northern section...
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Rethinking Seismic Source Model of Probabilistic Hazard Assessment in Taiwan after the 2018 Hualien, Taiwan, Earthquake Sequence

Chung‐Han Chan, Kuo‐Fong Ma, Ya‐Ting Lee, Yu‐Ju Wang
Published: 31 October 2018
Seismological Research Letters (2019) 90 (1): 88–96.
DOI: https://doi.org/10.1785/0220180225
...Chung‐Han Chan; Kuo‐Fong Ma; Ya‐Ting Lee; Yu‐Ju Wang ABSTRACT We examined the performance of Taiwan earthquake model (TEM) PSHA2015. We retrospectively forecasted the seismic activities of the 2018 Hualien, Taiwan, sequence and proposed recommendations for the next generation of seismic hazard...
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Rupture Behavior and Interaction of the 2018 Hualien Earthquake Sequence and Its Tectonic Implication

Pei‐Ru Jian, Shu‐Huei Hung, Lingsen Meng
Published: 31 October 2018
Seismological Research Letters (2019) 90 (1): 68–77.
DOI: https://doi.org/10.1785/0220180241
...Pei‐Ru Jian; Shu‐Huei Hung; Lingsen Meng ABSTRACT The M w 6.4 disastrous 2018 Hualien earthquake hitting the city of Hualien in eastern Taiwan on 6 February 2018 was preceded by unusual foreshock activities, starting with the largest M w 5.9 foreshock two days earlier. To better understand...
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Insights into Seismogenic Deformation during the 2018 Hualien, Taiwan, Earthquake Sequence from InSAR, GPS, and Modeling

Jiun‐Yee Yen, Chih‐Heng Lu, Rebecca J. Dorsey, Hao Kuo‐Chen, Chung‐Pai Chang, Chun‐Chin Wang, Ray Y. Chuang, Yu‐Ting Kuo, Chi‐Yu Chiu, Yo‐Ho Chang, Fabio Bovenga, Wen‐Yen Chang
Published: 24 October 2018
Seismological Research Letters (2019) 90 (1): 78–87.
DOI: https://doi.org/10.1785/0220180228
...Jiun‐Yee Yen; Chih‐Heng Lu; Rebecca J. Dorsey; Hao Kuo‐Chen; Chung‐Pai Chang; Chun‐Chin Wang; Ray Y. Chuang; Yu‐Ting Kuo; Chi‐Yu Chiu; Yo‐Ho Chang; Fabio Bovenga; Wen‐Yen Chang ABSTRACT We provide new data and insights into a 6 February 2018 M w 6.4 earthquake that shook the city of Hualien...
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Aftershock Sequence of the 2018 M w 6.4 Hualien Earthquake in Eastern Taiwan from a Dense Seismic Array Data Set

Hao Kuo‐Chen, Zhuo‐Kang Guan, Wei‐Fang Sun, Pei‐Yu Jhong, Dennis Brown
Published: 17 October 2018
Seismological Research Letters (2019) 90 (1): 60–67.
DOI: https://doi.org/10.1785/0220180233
...Hao Kuo‐Chen; Zhuo‐Kang Guan; Wei‐Fang Sun; Pei‐Yu Jhong; Dennis Brown ABSTRACT The February 2018 M w 6.4 earthquake in eastern Taiwan caused extensive damage in Hualien City. Although damaging earthquakes are common in this region, there are relatively few permanent seismic stations deployed. Two...
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Soil Liquefaction and Ground Settlements in 6 February 2018 Hualien, Taiwan, Earthquake

Yung‐Yen Ko, Shang‐Yi Hsu, Hsuan‐Chih Yang, Chih‐Chieh Lu, Yu‐Wei Hwang, Chia‐Hung Liu, Jin‐Hung Hwang
Published: 10 October 2018
Seismological Research Letters (2019) 90 (1): 51–59.
DOI: https://doi.org/10.1785/0220180196
...Yung‐Yen Ko; Shang‐Yi Hsu; Hsuan‐Chih Yang; Chih‐Chieh Lu; Yu‐Wei Hwang; Chia‐Hung Liu; Jin‐Hung Hwang ABSTRACT Soil liquefaction and ground settlements during an earthquake of M L 6.2 that took place on 6 February 2018 in Hualien, Taiwan are presented in this article based on the results...
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Strong Ground Motion and Pulse‐Like Velocity Observations in the Near‐Fault Region of the 2018 M w 6.4 Hualien, Taiwan, Earthquake

Chun‐Hsiang Kuo, Jyun‐Yan Huang, Che‐Min Lin, Ting‐Yu Hsu, Shu‐Hsien Chao, Kuo‐Liang Wen
Published: 26 September 2018
Seismological Research Letters (2019) 90 (1): 40–50.
DOI: https://doi.org/10.1785/0220180195
...Chun‐Hsiang Kuo; Jyun‐Yan Huang; Che‐Min Lin; Ting‐Yu Hsu; Shu‐Hsien Chao; Kuo‐Liang Wen ABSTRACT The maximum observed peak ground acceleration (PGA) and peak ground velocity (PGV) at various stations during the 2018 Hualien, Taiwan earthquake were 594 Gal and 146 cm / s , respectively. Pulse‐like...
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Fault‐to‐Fault Jumping Rupture of the 2018 M w 6.4 Hualien Earthquake in Eastern Taiwan

Shiann‐Jong Lee, Tzu‐Chi Lin, Ting‐Yu Liu, Tong‐Pong Wong
Published: 26 September 2018
Seismological Research Letters (2019) 90 (1): 30–39.
DOI: https://doi.org/10.1785/0220180182
...Shiann‐Jong Lee; Tzu‐Chi Lin; Ting‐Yu Liu; Tong‐Pong Wong ABSTRACT A fault‐to‐fault jumping rupture was found during the 2018 M w 6.4 Hualien earthquake that occurred in eastern Taiwan. Joint source inversion results indicated that the initial rupture started from a north–south (N‐S)–striking fault...
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EEW performance for the 2018 Hualien earthquake. The triangles represent th...

Published: 05 January 2022
Figure 11. EEW performance for the 2018 Hualien earthquake. The triangles represent the true positive stations. The squares represent the true negative stations. The diamonds represent the false positive stations. The pentagons represent the false negative stations. The two dashed circles
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Tectonic map of eastern Taiwan and the 2018 Hualien earthquake sequence. (a...

Published: 01 May 2019
Figure 1. Tectonic map of eastern Taiwan and the 2018 Hualien earthquake sequence. (a) Epicenters of the 2018 M w  6.4 Hualien earthquake (red star) and the largest foreshock ( M w  6.2; white star) proposed by the Central Weather Bureau (CWB). The mainshock occurred at 121.730° E
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(a) The 2018 M w  6.4 Hualien earthquake in eastern Taiwan. The Cen...

Published: 26 September 2018
Figure 1. (a) The 2018 M w  6.4 Hualien earthquake in eastern Taiwan. The Central Weather Bureau (CWB) epicenter is indicated with a red star, and the real‐time moment tensor (RMT) centroid location is shown as an open star. White stars are two M L > 7 events of the 1951
Journal Article

Probabilistic Fault Displacement Hazards along the Milun Fault

Jia‐Cian Gao, Chung‐Han Chan, Kuo‐Fong Ma, Chyi‐Tyi Lee
Published: 17 August 2022
Bulletin of the Seismological Society of America (2022) 112 (5): 2745–2757.
DOI: https://doi.org/10.1785/0120210312
... expected displacement on a fault and in its vicinity. To construct PFDHA, any new observed surface ruptures can be included. In 2018, an M w 6.4 earthquake hit the city of Hualien, Taiwan, and caused surface ruptures along the Milun fault. Immediately after the earthquake, field investigations were carried...
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(a) Tectonics map of the Taiwan region and Hualien area. The red line indic...

Published: 05 September 2018
Figure 1. (a) Tectonics map of the Taiwan region and Hualien area. The red line indicates the Milun fault. (b)  V S 30 map of the Hualien area. Stars show the epicenter of the 6 February 2018 M w  6.4 Hualien earthquake, and squares show the buildings damaged by the Hualien