Cyclic lava effusion during the 2018 eruption of Kilauea Volcano
Cyclic lava effusion during the 2018 eruption of Kilauea Volcano
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DOI：
10.1126/science.aay9070
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发表时间：
2019-12-06
期刊：
影响因子：
56.9
通讯作者：
Kauahikaua, J. P.
中科院分区：
文献类型：
--
作者：
Patrick, M. R.;Dietterich, H. R.;Kauahikaua, J. P.
熔岩流对活火山上的社区构成了经常性的威胁，体积喷发率是控制熔岩流行为和危害的主要因素之一。然而，对喷发率变化的时间尺度和驱动力仍然知之甚少。2018年，夏威夷基拉韦厄火山的下侧发生了一次极具破坏性的喷发，那里的主喷口在短（分钟）和长（数十小时）的时间尺度上都表现出了相当大的周期性喷发率。我们使用多参数数据表明，短周期是由浅层释气驱动的，而较长的周期是由40公里上坡处的山顶破火山口坍塌事件引发的岩浆供应压力驱动的激增。结果提供了一个明确的联系喷发率波动和他们的驱动过程中的岩浆系统。
Lava flows present a recurring threat to communities on active volcanoes, and volumetric eruption rate is one of the primary factors controlling flow behavior and hazard. The time scales and driving forces of eruption rate variability, however, remain poorly understood. In 2018, a highly destructive eruption occurred on the lower flank of Kilauea Volcano, Hawai'i, where the primary vent exhibited substantial cyclic eruption rates on both short (minutes) and long (tens of hours) time scales. We used multiparameter data to show that the short cycles were driven by shallow outgassing, whereas longer cycles were pressure-driven surges in magma supply triggered by summit caldera collapse events 40 kilometers upslope. The results provide a clear link between eruption rate fluctuations and their driving processes in the magmatic system.