气候变化领域集成服务门户(CCPortal): Near-Field Effects of Earthquake Rupture Velocity Into Tsunami Runup Heights

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DOI	10.1029/2019JB018946
	Near-Field Effects of Earthquake Rupture Velocity Into Tsunami Runup Heights
	Riquelme S.; Schwarze H.; Fuentes M.; Campos J.
发表日期	2020
ISSN	21699313
卷号	125 期号:6
英文摘要	Tsunamis have often been treated as an isolated phenomena from the earthquake itself. In tsunami modeling, seafloor deformation is generated from an earthquake. That deformation is copied into the sea surface, and then, the tsunami is propagated over the ocean. On the other hand, rupture velocities from earthquakes are in the span of 1.5–2.5 km/s; therefore, it is safe to approximate the earthquake rupture propagation as an instantaneous phenomena relative to the tsunami propagation. However, this is not necessarily true for all earthquakes. Several types of large slow earthquakes or nonregular earthquakes, such as low frequency earthquakes and very low frequency earthquakes, and tsunami earthquakes have been detected and observed in certain zones around the world. A key question is: Do giant thrust tsunamigenic earthquakes produce slow rupture (0.1–0.5 km/s) velocities? In this study, we model heterogeneous earthquakes sources using very slow rupture velocities (0.1– 2.5 km/s) with the aim of understanding how this parameter affects the tsunami propagation and runup. We compute the amplification due to a very slow moment release in megathrust earthquakes. Our research shows that rupture velocity plays a key role on runup amplification, and the classic instantaneous case might not work as expected for every case. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	complexity; earthquake; runup; rupture velocity; source time; 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/187800
作者单位	National Seismological Center, University of Chile, Santiago, Chile; Geophysics Department, University of Chile, Santiago, Chile; Programa de Riesgo Sísmico, University of Chile, Santiago, Chile
推荐引用方式 GB/T 7714	Riquelme S.,Schwarze H.,Fuentes M.,et al. Near-Field Effects of Earthquake Rupture Velocity Into Tsunami Runup Heights[J],2020,125(6).
APA	Riquelme S.,Schwarze H.,Fuentes M.,&Campos J..(2020).Near-Field Effects of Earthquake Rupture Velocity Into Tsunami Runup Heights.Journal of Geophysical Research: Solid Earth,125(6).
MLA	Riquelme S.,et al."Near-Field Effects of Earthquake Rupture Velocity Into Tsunami Runup Heights".Journal of Geophysical Research: Solid Earth 125.6(2020).