Revealing the shallow magmatic plumbing system of Sinabung Volcano during 2014–2017 eruption events using seismic tomography

IF 2.4 3区地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY

Journal of Volcanology and Geothermal Research Pub Date : 2024-07-20 DOI:10.1016/j.jvolgeores.2024.108137

Mohammad Hasib , Asep Saepuloh , Atin Nur Aulia , Faiz Muttaqy , Titi Anggono , Mohamad Ramdhan , Estu Kriswati , Syuhada , Febty Febriani , Aditya Dwi Prasetio , Cinantya Nirmala Dewi , Novianti Indrastuti , Bana Fitro Ghifari

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引用次数: 0

Abstract

We investigated the accurate locations of 443 explosion earthquakes that happened at Sinabung Volcano, North Sumatra, between October 2014 and June 2017. The explosion earthquakes were concentrated at shallow depths of approximately 1–5 km from the active crater. We used seismic tomography imaging to track the magma migration. Low Vp anomalies with low seismicity at shallow depths indicate that molten material originated from the shallow magma chamber. The presence of a shallow magma chamber of the Sinabung volcano was also revealed. The magma chamber with a volume of 2 km³ is located at a depth of 1.5–3.5 km below the summit. The magma plumbing system at shallow depths of approximately 1–5 km beneath the active crater was successfully imaged in detail.

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利用地震层析成像技术揭示西那榜火山 2014-2017 年喷发期间的浅层岩浆管道系统

我们调查了 2014 年 10 月至 2017 年 6 月期间发生在北苏门答腊西那榜火山的 443 次爆炸地震的准确位置。爆炸地震集中在距离活动火山口约 1-5 千米的浅层。我们使用地震层析成像技术跟踪岩浆迁移。浅层的低 Vp 异常和低地震活动表明，熔融物质源自浅层岩浆室。我们还揭示了西那榜火山浅层岩浆室的存在。该岩浆室位于山顶以下 1.5-3.5 千米深处，容积为 2 千立方米。成功地对活火山下约 1-5 千米浅层的岩浆管道系统进行了详细成像。

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来源期刊

Journal of Volcanology and Geothermal Research 地学-地球科学综合

CiteScore

5.90

自引率

13.80%

发文量

183

审稿时长

19.7 weeks

期刊介绍： An international research journal with focus on volcanic and geothermal processes and their impact on the environment and society. Submission of papers covering the following aspects of volcanology and geothermal research are encouraged: (1) Geological aspects of volcanic systems: volcano stratigraphy, structure and tectonic influence; eruptive history; evolution of volcanic landforms; eruption style and progress; dispersal patterns of lava and ash; analysis of real-time eruption observations. (2) Geochemical and petrological aspects of volcanic rocks: magma genesis and evolution; crystallization; volatile compositions, solubility, and degassing; volcanic petrography and textural analysis. (3) Hydrology, geochemistry and measurement of volcanic and hydrothermal fluids: volcanic gas emissions; fumaroles and springs; crater lakes; hydrothermal mineralization. (4) Geophysical aspects of volcanic systems: physical properties of volcanic rocks and magmas; heat flow studies; volcano seismology, geodesy and remote sensing. (5) Computational modeling and experimental simulation of magmatic and hydrothermal processes: eruption dynamics; magma transport and storage; plume dynamics and ash dispersal; lava flow dynamics; hydrothermal fluid flow; thermodynamics of aqueous fluids and melts. (6) Volcano hazard and risk research: hazard zonation methodology, development of forecasting tools; assessment techniques for vulnerability and impact.