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新方法能更好地预测火山喷发的风险 快报文章
地球科学快报,2023年第3期
作者:  王晓晨
Microsoft Word(40Kb)  |  收藏  |  浏览/下载:633/0  |  提交时间:2023/02/10
fluid inclusions  volcano eruption  
NASA借助先进工具和创新性数据分析深入研究地球运动 快报文章
地球科学快报,2023年第2期
作者:  张树良
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Earth’s motions  volcano eruption  earthquake  land uplift  NASA  JPL  
研究人员详细揭示汤加火山爆发过程 快报文章
地球科学快报,2022年第07期
作者:  王晓晨
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Volcano eruption  Tonga  
ESA研究指出深海温度变化导致了火山爆发 快报文章
地球科学快报,2022年第04期
作者:  王立伟
Microsoft Word(16Kb)  |  收藏  |  浏览/下载:793/0  |  提交时间:2022/02/25
the temperature deep  volcano eruption  
Extreme rainfall triggered the 2018 rift eruption at Kilauea Volcano 期刊论文
NATURE, 2020, 580 (7804) : 491-+
作者:  Cloutier, Richard;  Clement, Alice M.;  Lee, Michael S. Y.;  Noel, Roxanne;  Bechard, Isabelle;  Roy, Vincent;  Long, John A.
收藏  |  浏览/下载:60/0  |  提交时间:2020/05/13

The May 2018 rift intrusion and eruption of Kilauea Volcano, Hawai'  i, represented one of its most extraordinary eruptive sequences in at least 200 years, yet the trigger mechanism remains elusive(1). The event was preceded by several months of anomalously high precipitation. It has been proposed that rainfall can modulate shallow volcanic activity(2,3), but it remains unknown whether it can have impacts at the greater depths associated with magma transport. Here we show that immediately before and during the eruption, infiltration of rainfall into Kilauea Volcano'  s subsurface increased pore pressure at depths of 1 to 3 kilometres by 0.1 to 1 kilopascals, to its highest pressure in almost 50 years. We propose that weakening and mechanical failure of the edifice was driven by changes in pore pressure within the rift zone, prompting opportunistic dyke intrusion and ultimately facilitating the eruption. A precipitation-induced eruption trigger is consistent with the lack of precursory summit inflation, showing that this intrusion-unlike others-was not caused by the forceful intrusion of new magma into the rift zone. Moreover, statistical analysis of historic eruption occurrence suggests that rainfall patterns contribute substantially to the timing and frequency of Kilauea'  s eruptions and intrusions. Thus, volcanic activity can be modulated by extreme rainfall triggering edifice rock failure-a factor that should be considered when assessing volcanic hazards. Notably, the increasingly extreme weather patterns associated with ongoing anthropogenic climate change could increase the potential for rainfall-triggered volcanic phenomena worldwide.


Immediately before and during the eruption of Ki & x304  lauea Volcano in May 2018, anomalously high rainfall increased the pore pressure in the subsurface to its highest level in 50 years, causing weakening and mechanical failure of the edifice.


  
Anatomy of a Caldera Collapse: Kilauea 2018 Summit Seismicity Sequence in High Resolution 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2019
作者:  Shelly, David R.;  Thelen, Weston A.
收藏  |  浏览/下载:18/0  |  提交时间:2020/02/17
Kilauea Volcano  2018 eruption  high-resolution seismicity  caldera collapse  
Volume Flow Rate Estimation for Small Explosions at Mt. Etna, Italy, From Acoustic Waveform Inversion 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2019
作者:  Diaz-Moreno, A.;  Iezzi, A. M.;  Lamb, O. D.;  Fee, D.;  Kim, K.;  Zuccarello, L.;  De Angelis, S.
收藏  |  浏览/下载:19/0  |  提交时间:2019/11/27
volcano infrasound  Mt  Etna  waveform inversion  FDTD  volume flow rate  eruption intensity  
A "La Nina-like" state occurring in the second year after large tropical volcanic eruptions during the past 1500 years 期刊论文
CLIMATE DYNAMICS, 2019, 52 (12) : 7495-7509
作者:  Sun, Weiyi;  Liu, Jian;  Wang, Bin;  Chen, Deliang;  Liu, Fei;  Wang, Zhiyuan;  Ning, Liang;  Chen, Mingcheng
收藏  |  浏览/下载:22/0  |  提交时间:2019/11/26
ENSO  CESM  Impacts of volcanic eruption  WNPAC  Volcano-induced La Nina  
Stress Triggering of the 2005 Eruption of Sierra Negra Volcano, Galapagos 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2018, 45 (24) : 13288-13297
作者:  Gregg, P. M.;  Le Mevel, H.;  Zhan, Y.;  Dufek, J.;  Geist, D.;  Chadwick, W. W., Jr.
收藏  |  浏览/下载:17/0  |  提交时间:2019/04/09
eruption triggering  volcano dynamics  geodesy  overpressure  finite element model  thermomechanics  
Volcanic Hail Detected With GPS: The 2011 Eruption of Grimsvotn Volcano, Iceland 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2018, 45 (22) : 12236-12243
作者:  Grapenthin, R.;  Hreinsdottir, S.;  Van Eaton, A. R.
收藏  |  浏览/下载:23/0  |  提交时间:2019/04/09
volcano  GPS  ash  explosive eruption  GNSS