Detecting and Locating Precursory Signals During the 2011 El Hierro, Canary Islands, Submarine Eruption
Detecting and Locating Precursory Signals During the 2011 El Hierro, Canary Islands, Submarine Eruption
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探测和定位 2011 年加那利群岛埃尔耶罗潜艇爆发期间的前兆信号
DOI：
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发表时间：
2018
影响因子：
5.2
通讯作者：
M. Schimmel
中科院分区：
文献类型：
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作者：
P. Sánchez‐Pastor;A. Obermann;M. Schimmel
由于缺乏直接的地面观测，预测和监测海底火山喷发是一项特殊的挑战。在本研究中，我们利用 2 年连续地震记录的相位自相关和互相关研究了 2011 年 El Hierro 海底喷发的动力学。波形相似性的时间演化分析使我们能够清楚地识别这座新火山的不同喷发前阶段，以及 2012 年发生的 3 次岩浆侵入。我们使用概率敏感核来定位岩浆堆积带和 Tiñor 死火山区域内动态最高的位置，这些区域可能充当应力屏障，引导岩浆从耶罗岛北部到南部的最终喷发地点。我们的结果凸显了环境噪声方法在监测火山灾害和动乱方面的潜力，即使数据集稀疏且对该地区的了解有限。
Forecasting and monitoring submarine volcanic eruptions represent a particular challenge due to the lack of direct surface observations. In the present study, we investigate the dynamics of the 2011 El Hierro submarine eruption using phase autocorrelation and cross‐correlation from 2 years of continuous seismic records. Time evolution analysis of the waveform similarity allows us to clearly identify different preeruptive phases of this new volcano, as well as three magmatic intrusions that occurred in 2012. We use probabilistic sensitivity kernels to locate the places of the highest dynamics within the magmatic accumulation zone and the extinct volcanic area of Tiñor that might have acted as stress barriers, guiding the magma from the North of El Hierro Island to the final eruption site at the South. Our results highlight the potential of ambient noise methods to monitor volcanic hazard and unrest even with sparse data sets and limited knowledge of the region.
影响因子：
5.8
作者：
Longpre, Marc-Antoine;Kluegel, Andreas;Stix, John
通讯作者：
Stix, John