Several studies suggest that large earthquakes (M > 7.0) can act as external triggers of volcanic unrest, and even eruption. This triggering is attributed to either ground shaking (dynamic stresses) or to permanent ground deformation (associated with static stress changes). However, large earthquakes are rare and testing triggering hypotheses has proven difficult. We use geodetic data to show that the 13 November 2016 Kaikōura earthquake (M_w 7.8) triggered local deformation of up to 11 mm at Taupō volcano, 500 km away, which lasted for approximately twelve days. Using elastic geodetic models, we infer that the observed deformation was caused by either aseismic fault slip or a dike intrusion. We then use strong motion data from the surrounding area to show that the Kaikōura earthquake caused maximum dynamic stress changes in the range of 0.15–0.9 MPa in the vicinity of Taupō volcano and conclude that these dynamic stress changes triggered local faulting or dike activity and the associated deformation at Taupō volcano.

中文翻译：

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陶波火山对 M7.8 凯库拉地震的响应

多项研究表明，大地震（M  > 7.0）可以作为火山动荡甚至喷发的外部触发因素。这种触发归因于地面震动（动态应力）或永久地面变形（与静态应力变化相关）。然而，大地震很少见，而且测试触发假设也很困难。我们利用大地测量数据显示，2016 年 11 月 13 日凯库拉地震（震级_7.8）引发了 500 公里外的陶波火山局部变形高达 11 毫米，持续了大约 12 天。使用弹性大地测量模型，我们推断观察到的变形是由地震断层滑动或岩脉侵入引起的。然后，我们利用周边地区的强震数据表明，凯库拉地震在陶波火山附近引起了 0.15-0.9 MPa 范围内的最大动态应力变化，并得出结论，这些动态应力变化引发了局部断层或岩脉活动，并且陶波火山的相关变形。