| DOI | 10.1029/2020JB021375
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| 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.
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| 发表日期 | 2021
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| ISSN | 21699313
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| 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
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| 来源期刊 | Journal of Geophysical Research: Solid Earth
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| 文献类型 | 期刊论文
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| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/187151
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| 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
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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).
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| 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).
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| 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).
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