Toward an Integrative Geological and Geophysical View of Cascadia Subduction Zone Earthquakes
Toward an Integrative Geological and Geophysical View of Cascadia Subduction Zone Earthquakes
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卡斯卡迪亚俯冲带地震的综合地质和地球物理观点
DOI：
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
E. Wirth
中科院分区：
文献类型：
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作者：
M. Walton;L. Staisch;T. Dura;J. Pearl;B. Sherrod;J. Gomberg;S. Engelhart;A. Tréhu;J. Watt;J. Perkins;R. Witter;N. Bartlow;C. Goldfinger;H. Kelsey;A. Morey;V. Sahakian;H. Tobin;Kelin Wang;R. Wells;E. Wirth
卡斯卡迪亚俯冲带（CSZ）是一个特殊的地质环境，记录了陆地水平变化，海啸和地面运动的证据，揭示了过去10 kyr至少19次大规模地震。这种地震是地球上最具影响力的自然灾害之一，超越国界，并可能产生全球影响。为了减少美国太平洋西北部和加拿大沿海不列颠哥伦比亚省未来地震事件的社会影响，需要提高对巨型逆冲断层地震破裂、复发和相应灾害的科学认识。尽管从几十年的研究中获得了大量的知识，但关于过去CSZ地震的特征和频率仍然存在很大的不确定性。在这篇评论中，我们总结了地质，地球物理和仪器证据相关的理解巨型逆冲断层地震沿着CSZ和相关的不确定性。我们讨论了证据如何约束在卡斯卡迪亚的大规模逆冲断层地震复发的各种模型，并确定潜在的地震科学界前进的道路。尽管过去的巨型逆冲断层事件有着出色的地质记录，但CSZ地震的震级和频率仍然存在很大的不确定性。这篇综述概述了目前的知识和有前途的未来方向，以解决悬而未决的问题CSZ破裂的特点和复发。将不同的数据集结合起来，注意产生不同记录的地质过程，有可能导致重大进展。地球和行星科学年度评论第49卷的预计最终在线出版日期为2021年5月。请访问http://www.annualreviews.org/page/journal/pubdates了解修订后的估计数。
The Cascadia subduction zone (CSZ) is an exceptional geologic environment for recording evidence of land-level changes, tsunamis, and ground motion that reveals at least 19 great megathrust earthquakes over the past 10 kyr. Such earthquakes are among the most impactful natural hazards on Earth, transcend national boundaries, and can have global impact. Reducing the societal impacts of future events in the US Pacific Northwest and coastal British Columbia, Canada, requires improved scientific understanding of megathrust earthquake rupture, recurrence, and corresponding hazards. Despite substantial knowledge gained from decades of research, large uncertainties remain about the characteristics and frequencies of past CSZ earthquakes. In this review, we summarize geological, geophysical, and instrumental evidence relevant to understanding megathrust earthquakes along the CSZ and associated uncertainties. We discuss how the evidence constrains various models of great megathrust earthquake recurrence in Cascadia and identify potential paths forward for the earthquake science community. ▪ Despite outstanding geologic records of past megathrust events, large uncertainty of the magnitude and frequency of CSZ earthquakes remains. ▪ This review outlines current knowledge and promising future directions to address outstanding questions on CSZ rupture characteristics and recurrence. ▪ Integration of diverse data sets with attention to the geologic processes that create different records has potential to lead to major progress. Expected final online publication date for the Annual Review of Earth and Planetary Sciences, Volume 49 is May 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.
影响因子：
4
作者：
J. Pearl;K. Anchukaitis;J. Donnelly;C. Pearson;N. Pederson;M. L. Gaylord;A. McNichol;E. Cook;George L. Zimmermann
通讯作者：
J. Pearl;K. Anchukaitis;J. Donnelly;C. Pearson;N. Pederson;M. L. Gaylord;A. McNichol;E. Cook;George L. Zimmermann
公元 2005 年苏门答腊岛地震中，下降的板块地形阻止了破裂
影响因子：
5.8
作者：
Henstock T
通讯作者：
Henstock T