Insights into magma and fluid transfer at Mount Etna by a multiparametric approach: A model of the events leading to the 2011 eruptive cycle
Insights into magma and fluid transfer at Mount Etna by a multiparametric approach: A model of the events leading to the 2011 eruptive cycle
复制标题
通过多参数方法深入了解埃特纳火山的岩浆和流体传输：导致 2011 年喷发周期的事件模型
DOI：
10.1002/jgrb.50248
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
G. Salerno
中科院分区：
文献类型：
--
作者：
D. Patanè;A. Aiuppa;M. Aloisi;B. Behncke;A. Cannata;M. Coltelli;G. Di Grazia;S. Gambino;S. Gurrieri;M. Mattia;G. Salerno
自20世纪90年代后半期以来，埃特纳火山的喷发活动提供了证据，表明爆炸性喷发和喷发喷发在流量和喷发方式上都表现出周期性的变化。在这项工作中，应用了多参数方法，包括比较火山学、地球物理和地球化学数据，以探索2009-2011年期间的火山动力学。特别是，研究了地震活动(火山构造地震、火山震动、长周期和超长周期事件)、地面变形(GPS和倾斜仪数据)和地球化学(SO2通量、CO2通量、CO2/SO2比率)的时间和/或空间变化，以了解火山活动，并调查管道系统深部和浅部的岩浆运动，为2011年喷发期提供支持。在火山收缩之后，伴随着2008-2009年喷发的开始，一个新的补给阶段于2008年8月开始。这一新的火山循环从中浅层管道系统和通货膨胀的初始补给阶段演变而来，随后(I)自2009年4月以来火山东侧加速置换，(Ii)2010年下半年峰顶火山活动重新开始，在2011年达到顶峰，来自新东南陨石坑(NSEC)的18个熔岩喷泉循环喷发。此外，在地球化学数据的支持下，利用地表形变GPS数据的反演和震源位置来约束岩浆脱气的面积和深度范围，从而重建为2011年旋回喷泉NSEC活动提供支持的中浅层储存带。
Since the second half of the 1990s, the eruptive activity of Mount Etna has provided evidence that both explosive and effusive eruptions display periodic variations in discharge and eruption style. In this work, a multiparametric approach, consisting of comparing volcanological, geophysical, and geochemical data, was applied to explore the volcano's dynamics during 2009–2011. In particular, temporal and/or spatial variations of seismicity (volcano‐tectonic earthquakes, volcanic tremor, and long‐period and very long period events), ground deformation (GPS and tiltmeter data), and geochemistry (SO2 flux, CO2 flux, CO2/SO2 ratio) were studied to understand the volcanic activity, as well as to investigate magma movement in both deep and shallow portions of the plumbing system, feeding the 2011 eruptive period. After the volcano deflation, accompanying the onset of the 2008–2009 eruption, a new recharging phase began in August 2008. This new volcanic cycle evolved from an initial recharge phase of the intermediate‐shallower plumbing system and inflation, followed by (i) accelerated displacement in the volcano's eastern flank since April 2009 and (ii) renewal of summit volcanic activity during the second half of 2010, culminating in 2011 in a cyclic eruptive behavior with 18 lava fountains from New Southeast Crater (NSEC). Furthermore, supported by the geochemical data, the inversion of ground deformation GPS data and the locations of the tremor sources are used here to constrain both the area and the depth range of magma degassing, allowing reconstructing the intermediate and shallow storage zones feeding the 2011 cyclic fountaining NSEC activity.
影响因子：
5.8
作者：
Collins, S. J.;Pyle, D. M.;Maclennan, J.
通讯作者：
Maclennan, J.