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Rupture Process and Strong-Motion Generation of the 2014 Iquique, Northern Chile, Earthquake
https://nied-repo.bosai.go.jp/records/3019
https://nied-repo.bosai.go.jp/records/30197aabc541-e26d-4730-b301-fa58f598e969
Item type | researchmap(1) | |||||||||||
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公開日 | 2023-03-30 | |||||||||||
タイトル | ||||||||||||
言語 | en | |||||||||||
タイトル | Rupture Process and Strong-Motion Generation of the 2014 Iquique, Northern Chile, Earthquake | |||||||||||
言語 | ||||||||||||
言語 | eng | |||||||||||
著者 |
Wataru Suzuki
× Wataru Suzuki
× Nelson Pulido
× Shin Aoi
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抄録 | ||||||||||||
内容記述タイプ | Other | |||||||||||
内容記述 | To investigate the rupture process and strong-motion generation of the Mw 8.2 Iquique, Northern Chile, earthquake in 2014, we estimated kinematic source models from waveform inversion and back-projection analyses using strong-motion records. A slip model derived from the waveform inversion using the low-frequency (0.02?0.125 Hz) velocities is characterized by a large slip area localized 50 km south of the epicenter with a peak slip of 10 m, and a deeper slip area with a peak slip above 2 m located below the coast. The main rupture of these areas started 25 s after the initial break generating two pronounced phases observed in most of the records. The landward slip area ruptured for about 10 s generating the first impulsive phase, while the offshore largest slip area ruptured for 20 s creating a longer duration phase observed later. Results from a back-projection analysis based on stacking of envelopes of 5?10-Hz accelerations indicate that the high-frequency radiation propagated down-dip towards the coast, reaching its maximum value from 25 s to 40 s, far away from the shallow main slip area obtained from low-frequency waveform inversion. Our results suggest a clear depth dependence of the seismic wave radiation during the Iquique earthquake. | |||||||||||
言語 | en | |||||||||||
書誌情報 |
en : Journal of Earthquake and Tsunami 巻 10, 号 3, p. 1640008, 発行日 2016-03-15 |
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出版者 | ||||||||||||
言語 | en | |||||||||||
出版者 | World Scientific Pub Co Pte Lt | |||||||||||
ISSN | ||||||||||||
収録物識別子タイプ | EISSN | |||||||||||
収録物識別子 | 1793-7116 | |||||||||||
DOI | ||||||||||||
関連識別子 | 10.1142/s179343111640008x |