气候变化领域集成服务门户(CCPortal): Study on the 1906 Colombia-Ecuador Megathrust Earthquake Based on Tsunami Waveforms Observed at Tide Gauges: Release Variation of Accumulated Slip Deficits in the Source Area

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DOI	10.1029/2020JB021375
	Study on the 1906 Colombia-Ecuador Megathrust Earthquake Based on Tsunami Waveforms Observed at Tide Gauges: Release Variation of Accumulated Slip Deficits in the Source Area
	Yamanaka Y.; Tanioka Y.
发表日期	2021
ISSN	21699313
卷号	126 期号:5
英文摘要	A tsunami that followed the 1906 Colombia-Ecuador megathrust earthquake was observed and recorded by several tide gauges. In this study, tide gauge records were first digitized from documents comparing the estimated astronomical tide level changes, and the observed tsunami waveforms were extracted. An inverse analysis was conducted using the observed tsunami waveforms, and we successfully developed a slip distribution model that produced improved tsunami waveforms for tide gauge stations compared with previous studies. Based on a comparison of the developed source model and ruptured areas of other significant earthquakes around Colombia and Ecuador, the 1906 earthquake already ruptured an area affected by the 1979 earthquake, resulting in a substantial release of accumulated slip deficits. In contrast, although the ruptured area of the 1906 earthquake likely covered the source areas of the 1958 and 1942 earthquakes, the release in these areas during the earthquake was moderate and insignificant, and large slip deficits remained after the 1906 earthquake. These results demonstrate that the extent of the release of accumulated slip deficits varied greatly in the source area of the 1906 earthquake. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	Colombia-Ecuador subduction zone; the 1906 earthquake; the 1942 earthquake; the 1958 earthquake; the 1979 earthquake; tsunami
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187151
作者单位	Department of Civil Engineering, University of Tokyo, Tokyo, Japan; Institute of Seismology and Volcanology, Faculty of Science, Hokkaido University, Sapporo, Japan
推荐引用方式 GB/T 7714	Yamanaka Y.,Tanioka Y.. Study on the 1906 Colombia-Ecuador Megathrust Earthquake Based on Tsunami Waveforms Observed at Tide Gauges: Release Variation of Accumulated Slip Deficits in the Source Area[J],2021,126(5).
APA	Yamanaka Y.,&Tanioka Y..(2021).Study on the 1906 Colombia-Ecuador Megathrust Earthquake Based on Tsunami Waveforms Observed at Tide Gauges: Release Variation of Accumulated Slip Deficits in the Source Area.Journal of Geophysical Research: Solid Earth,126(5).
MLA	Yamanaka Y.,et al."Study on the 1906 Colombia-Ecuador Megathrust Earthquake Based on Tsunami Waveforms Observed at Tide Gauges: Release Variation of Accumulated Slip Deficits in the Source Area".Journal of Geophysical Research: Solid Earth 126.5(2021).