《科学》 第391卷 第6782期 · 2026年1月15日 · 中文解读
震颤与低频地震揭示门多西诺三联点慢滑移
Tremor and low-frequency earthquakes as indicators of slow slip at the Mendocino triple junction
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这篇讲什么
本文通过分析门多西诺三联点附近的构造震颤和低频地震,确定了其走滑机制,表明太平洋板块捕获的胡安德富卡板块碎片正在向北移动,挑战了现有的板片窗解释,并提出了潜在的地震危险。
原文开头
Plate tectonics Low-frequency earthquakes track the motion of a captured slab fragment David R. Shelly1*, Amanda M. Thomas2, Kathryn Z. Materna3, Robert J. Skoumal4 Accurate tectonic models are essential for assessing seismic hazard and fault interactions. However, the plate configuration at the complex Mendocino triple junction, where the San Andreas Fault and the Cascadia subduction zone meet, remains uncertain. We analyzed fault slip associated with a recently identified zone of tectonic tremor and low-frequency earthquakes (LFEs) near the southern edge of the subducting Gorda slab. Based on tidal sensitivity and P-wave first motions, we show that the LFEs are generated by dipping, strike-slip motion. …
摘自《科学》(Science)第391卷 第6782期 · 2026年1月15日。仅引用开头一小段供了解文章,版权归原刊所有,全文请阅读原刊。

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