4.6 Article

Magma Migration at Shallower Levels and Lava Fountains Sequence as Revealed by Borehole Dilatometers on Etna Volcano

期刊

FRONTIERS IN EARTH SCIENCE
卷 9, 期 -, 页码 -

出版社

FRONTIERS MEDIA SA
DOI: 10.3389/feart.2021.740505

关键词

etna volcano; lava fountains; volcano monitoring; borehole strainmeters; eruption modeling

资金

  1. Italian FIRB project Development of new technologies for the protection and defense of the territory fromnatural hazards (FUMO)
  2. PON project Development of research centers for the study of volcanic areas at high risk and their geothermal potential in the context of Mediterranean geological and environmental dynamic (VULCAMED)
  3. INGV
  4. Italian Presidenza del Consiglio dei Ministri Dipartimento della Protezione Civile (DPC), All. B2-WP2 -Task 9 Ottimizzazione dell'acquisizione dei segnali ad alta precisione degli strainmeter installati in pozzo sull'Etna (Optimization of the acquisiti

向作者/读者索取更多资源

A main challenge in open conduit volcanoes is to detect and interpret the ultra-small strain associated with eruptions such as lava fountains. Etna experienced a violent eruptive sequence of lava fountains two years after the flank eruption of December 2018, with significant strain changes recorded by a high-precision borehole dilatometer network. The strain signals provided useful information on the explosive efficiency and erupted volume, highlighting the importance of these tools in studying explosive eruptions in open conduit volcanoes.
A main challenge in open conduit volcanoes is to detect and interpret the ultra-small strain (<10(-6)) associated with minor but critical eruptions such as the lava fountains. Two years after the flank eruption of December 2018, Etna generated a violent and spectacular eruptive sequence of lava fountains. There were 23 episodes from December 13, 2020 to March 31, 2021, 17 of which in the brief period 16 February to 31 March with an intensified occurrence rate. The high-precision borehole dilatometer network recorded significant strain changes in the forerunning phase of December 2020 accompanying the final magma migration at the shallower levels, and also during the single lava fountains and during the entire sequence. The source modeling provided further information on the shallow plumbing system. Moreover, the strain signals also gave useful information both on the explosive efficiency of the lava fountains sequence and the estimate of erupted volume. The high precision borehole dilatometers confirm to be strategic and very useful tool, also to detect and interpret ultra-small strain changes associated with explosive eruptions, such as lava fountains, in open conduit volcanoes.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据