Diverse Eruptive Activity Revealed by Acoustic and Electromagnetic Observations of the 14 July 2013 Intense Vulcanian Eruption of Tungurahua Volcano, Ecuador
Diverse Eruptive Activity Revealed by Acoustic and Electromagnetic Observations of the 14 July 2013 Intense Vulcanian Eruption of Tungurahua Volcano, Ecuador
复制标题
2013 年 7 月 14 日厄瓜多尔通古拉瓦火山强烈火山喷发的声学和电磁观测揭示了多种喷发活动
DOI：
10.1002/2017gl076419
复制
发表时间：
2018
影响因子：
5.2
通讯作者：
B. Brand
中科院分区：
文献类型：
--
作者：
Jacob F. Anderson;Jeffrey B. Johnson;A. Steele;M. Ruiz;B. Brand
在2013年7月厄瓜多尔通古拉瓦火山强烈喷发期间，我们在喷口2公里范围内的传感器上记录到了极高幅度、长周期的次声(1,600帕峰间振幅，5.5-S周期)，以及意外捕获的火山闪电电磁信号作为干扰。这次爆炸是通古拉瓦火山自1999年开始最近活动以来最强大的火山喷发之一，其声波也是有记录以来最强大的火山次声波之一。我们使用这些数据来量化主爆炸的喷发体积，并将爆炸后的脱气归类为不同的排放类型。此外，我们还演示了一种与次声一起记录闪电相关电磁信号的高效方法。强大的火山喷发的详细年表很少见；这项研究表明，在这种喷发中可以发生不同的喷发过程，接近喷口的次声和电磁数据可以解释它们。
During the powerful July 2013 eruption of Tungurahua volcano, Ecuador, we recorded exceptionally high amplitude, long‐period infrasound (1,600‐Pa peak‐to‐peak amplitude, 5.5‐s period) on sensors within 2 km of the vent alongside electromagnetic signals from volcanic lightning serendipitously captured as interference. This explosion was one of Tungurahua's most powerful vulcanian eruptions since recent activity began in 1999, and its acoustic wave is among the most powerful volcanic infrasound ever recorded anywhere. We use these data to quantify erupted volume from the main explosion and to classify postexplosive degassing into distinct emission styles. Additionally, we demonstrate a highly effective method of recording lightning‐related electromagnetic signals alongside infrasound. Detailed chronologies of powerful vulcanian eruptions are rare; this study demonstrates that diverse eruptive processes can occur in such eruptions and that near‐vent infrasound and electromagnetic data can elucidate them.
厄瓜多尔通古拉瓦火山（2013â2014）连续的火山栓形成、火山爆发崩解以及颗粒火山碎屑密度流的产生
影响因子：
2.9
作者：
Hall ML;Steele AL;Bernard B;Mothes PA;Vallejo SX;Douillet GA;Ramon PA;Aguaiza SX;Ruiz MC
通讯作者：
Ruiz MC