The 2015 M-w 7.1 earthquake on the Charlie-Gibbs transform fault: Repeating earthquakes and multimodal slip on a slow oceanic transform

Aderhold K.; Abercrombie R. E.

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The 2015 M-w 7.1 earthquake on the Charlie-Gibbs transform fault: Repeating earthquakes and multimodal slip on a slow oceanic transform

机译：查理-吉布斯（Charlie-Gibbs）转换断层的2015年M-w 7.1级地震：在慢速海洋转换中重复地震和多峰滑移

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The 2015 M-w 7.1 earthquake on the Charlie-Gibbs transform fault along the Mid-Atlantic Ridge is the latest in a series of seven large earthquakes since 1923. We propose that these earthquakes form a pair of quasi-repeating sequences with the largest magnitudes and longest repeat times for such sequences observed to date. We model teleseismic body waves and find that the 2015 earthquake ruptured a distinct segment of the transform from the previous 1998 earthquake. The two events display similarities to earthquakes in 1974 and 1967, respectively. We observe large oceanic transform earthquakes to exhibit characteristic slip behavior, initiating with small slip near the ridge, and propagating unilaterally to significant slip asperities nearer the center of the transform. These slip distributions combined with apparent segmentation support multimode slip behavior with fault slip accommodated both seismically during large earthquakes and aseismically in between.

机译：自1923年以来，在中大西洋沿查理-吉布斯（Charlie-Gibbs）转换断层发生的2015年Mw 7.1地震是自1923年以来的七次大地震系列中的最新一次。我们建议这些地震形成一对最大程度和最长的准重复序列迄今观察到的此类序列的重复时间。我们对远震体波建模，发现2015年地震与1998年以前的地震破裂了不同的部分。这两个事件分别显示与1974年和1967年的地震相似。我们观察到大洋相变地震表现出特征性的滑移行为，即从山脊附近的小滑移开始，并单侧传播到靠近转换中心的显着滑移凹凸。这些滑动分布与表观分段相结合，支持多模滑动行为，断层滑动既可以在大地震中地震适应，也可以在两者之间抗震。

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《Geophysical Research Letters》 |2016年第12期|共10页
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Aderhold K.; Abercrombie R. E.;
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1. The 2015 M-w 7.1 earthquake on the Charlie-Gibbs transform fault: Repeating earthquakes and multimodal slip on a slow oceanic transform [J] . Aderhold K., Abercrombie R. E. Geophysical Research Letters . 2016,第12期

机译：查理-吉布斯（Charlie-Gibbs）转换断层的2015年M-w 7.1级地震：在慢速海洋转换中重复地震和多峰滑移
2. Aseismic Transform Fault Slip at the Mendocino Triple Junction From Characteristically Repeating Earthquakes [J] . Materna Kathryn, Taira Takaaki, Bürgmann Roland Geophysical Research Letters . 2018,第2期

机译：在特征性地重复地震中，爆膜抗体变换故障滑动
3. Tectonic analysis of an oceanic transform fault zone based on fault-slip data and earthquake focal mechanisms: the Husavik-Flatey Fault zone, Iceland [J] . Garcia S., Angelier J., Bergerat F., Tectonophysics: International Journal of Geotectonics and the Geology and Physics of the Interior of the Earth . 2002,第3a4期

机译：基于断层滑动数据和地震震源机制的海洋转换断层带的构造分析：冰岛胡萨维克-弗拉蒂断层带
4. Unusual large earthquakes on oceanic transform faults [C] . Shamita Das International School of Physics "Enrico Fermi";International School of Physics "Enrico Fermi" . 2019

机译：对海洋变换故障不寻常的大地震
5. Understanding Earthquake Rupture Processes: Insights from Mid-ocean Ridge Transform Faults and Submarine Volcanoes [D] . Moyer, Pamela A. 2020

机译：了解地震破裂流程：中海岭的见解变换了故障和潜艇火山
6. Repeating earthquakes record fault weakening and healing in areas of megathrust postseismic slip [O] . E. J. Chaves, S. Y. Schwartz, R. E. Abercrombie 2020

机译：重复地震记录梅吉坦彻后壁岩地区的故障削弱和愈合
7. The 1998 March 14 Fandoqa earthquake (M-w 6.6) in Kerman province, southeast Iran: re-rupture of the 1981 Sirch earthquake fault, triggering of slip on adjacent thrusts and the active tectonics of the Gowk fault zone [O] . Berberian, M, Jackson, JA, Fielding, E, 2001

机译：1998年3月14日伊朗东南部克尔曼省的Fandoqa地震（M-w 6.6）：1981年Sirch地震断裂的再次破裂，相邻推力的滑移和Gowk断裂带的活跃构造

The 2015 M-w 7.1 earthquake on the Charlie-Gibbs transform fault: Repeating earthquakes and multimodal slip on a slow oceanic transform

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