气候变化领域集成服务门户(CCPortal): Source Process for Two Enigmatic Repeating Vertical-T CLVD Tsunami Earthquakes in the Kermadec Ridge

CCPortal

DOI	10.1029/2020GL087805
	Source Process for Two Enigmatic Repeating Vertical-T CLVD Tsunami Earthquakes in the Kermadec Ridge
	Gusman A.R.; Kaneko Y.; Power W.; Burbidge D.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:16
英文摘要	Two repeating compensated linear vector dipole (CLVD) earthquakes occurred in 2009 and 2017 on the Kermadec Ridge near the Curtis submarine volcano. The tsunami and seismic waveforms of both events are almost identical. Simulated tsunami and seismic waveforms are compared with observations of the 2017 event to estimate the location and geometry of the source. A CLVD source model at 8–14 km depth is consistent with the global CMT solution but generates no tsunami. The tsunami waveforms can be well reproduced if the source model is about 1.5 km deep. However, a seismic source at this depth is not consistent with the observed seismic waves. This suggests that two sources were involved with different depths. The main, shallow, tsunami source could be due to hydrofracturing of heated water in a shallow sediment layer triggered by a deeper earthquake. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Earthquakes; Seismic waves; Seismographs; Waveform analysis; Hydro-fracturing; Linear vectors; Sediment layers; Seismic source; Seismic waveforms; Source modeling; Source process; Submarine volcano; Tsunamis; fracture initiation; geometry; hydrothermal activity; seismic source; submarine volcano; tsunami; volcanic earthquake; volcanic eruption; waveform analysis; Kermadec Ridge; Pacific Ocean
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169919
作者单位	GNS Science, Lower Hutt, New Zealand
推荐引用方式 GB/T 7714	Gusman A.R.,Kaneko Y.,Power W.,et al. Source Process for Two Enigmatic Repeating Vertical-T CLVD Tsunami Earthquakes in the Kermadec Ridge[J],2020,47(16).
APA	Gusman A.R.,Kaneko Y.,Power W.,&Burbidge D..(2020).Source Process for Two Enigmatic Repeating Vertical-T CLVD Tsunami Earthquakes in the Kermadec Ridge.Geophysical Research Letters,47(16).
MLA	Gusman A.R.,et al."Source Process for Two Enigmatic Repeating Vertical-T CLVD Tsunami Earthquakes in the Kermadec Ridge".Geophysical Research Letters 47.16(2020).