The intense explosive activity of lava fountain sequences from Voragine crater at Etna volcano: new insights through high-precision borehole strain recordings

IF 2.3 3区地球科学 Q3 GEOSCIENCES, MULTIDISCIPLINARY

Frontiers in Earth Science Pub Date : 2025-07-10 DOI:10.3389/feart.2025.1606006

Alessandro Bonaccorso, Luigi Carleo, Gilda Currenti, Antonino Sicali

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引用次数: 1

Abstract

Mount Etna is well known for its frequent lava fountains, or paroxysms, characterized by their intense explosive activity. Over the past decades, the Southeast Crater has been the most prolific, generating over a hundred events. More recently, three sequences of particularly powerful lava fountains were erupted from the Voragine Crater: four episodes between 3 and 5 December 2015, three between 18 and 21 May 2016, and six between 4 July and 15 August 2024. This intense eruptive activity, accompanied by significant ash dispersal and fallout, severely impacted the infrastructure and accessibility of eastern Sicily, causing disruptions to air services and the temporary closure of Catania’s international airport. In this study, we investigated these intriguing phenomena through the high-precision strain data recorded by Etna’s network of borehole dilatometers. We modelled and interpreted the source of these paroxysmal events, examining its position, the magnitude of its volumetric change during the paroxysms, and its relationship with the volcano’s plumbing system, thereby advancing our understanding of these dynamic processes.

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埃特纳火山Voragine火山口熔岩喷泉序列的强烈爆炸活动：通过高精度钻孔应变记录的新见解

埃特纳火山以其频繁的熔岩喷泉或爆发而闻名，其特征是剧烈的爆炸活动。在过去的几十年里，东南陨石坑是最多产的，产生了一百多起事件。最近，Voragine火山口爆发了三次特别强大的熔岩喷泉：2015年12月3日至5日爆发了四次，2016年5月18日至21日爆发了三次，2024年7月4日至8月15日爆发了六次。这次强烈的喷发活动，伴随着大量的火山灰扩散和沉降物，严重影响了西西里岛东部的基础设施和交通，造成航空服务中断，卡塔尼亚国际机场暂时关闭。在这项研究中，我们通过埃特纳钻孔膨胀计网络记录的高精度应变数据来研究这些有趣的现象。我们模拟并解释了这些突发事件的来源，检查了它的位置，它在突发期间的体积变化幅度，以及它与火山管道系统的关系，从而提高了我们对这些动态过程的理解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Frontiers in Earth Science Earth and Planetary Sciences-General Earth and Planetary Sciences

CiteScore

3.50

自引率

10.30%

发文量

2076

审稿时长

12 weeks

期刊介绍： Frontiers in Earth Science is an open-access journal that aims to bring together and publish on a single platform the best research dedicated to our planet. This platform hosts the rapidly growing and continuously expanding domains in Earth Science, involving the lithosphere (including the geosciences spectrum), the hydrosphere (including marine geosciences and hydrology, complementing the existing Frontiers journal on Marine Science) and the atmosphere (including meteorology and climatology). As such, Frontiers in Earth Science focuses on the countless processes operating within and among the major spheres constituting our planet. In turn, the understanding of these processes provides the theoretical background to better use the available resources and to face the major environmental challenges (including earthquakes, tsunamis, eruptions, floods, landslides, climate changes, extreme meteorological events): this is where interdependent processes meet, requiring a holistic view to better live on and with our planet. The journal welcomes outstanding contributions in any domain of Earth Science. The open-access model developed by Frontiers offers a fast, efficient, timely and dynamic alternative to traditional publication formats. The journal has 20 specialty sections at the first tier, each acting as an independent journal with a full editorial board. The traditional peer-review process is adapted to guarantee fairness and efficiency using a thorough paperless process, with real-time author-reviewer-editor interactions, collaborative reviewer mandates to maximize quality, and reviewer disclosure after article acceptance. While maintaining a rigorous peer-review, this system allows for a process whereby accepted articles are published online on average 90 days after submission. General Commentary articles as well as Book Reviews in Frontiers in Earth Science are only accepted upon invitation.