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Nature:地球上的水或源于岩浆海洋与分子氢的相互作用 快报文章
地球科学快报,2023年第08期
作者:  刘学
Microsoft Word(17Kb)  |  收藏  |  浏览/下载:544/0  |  提交时间:2023/04/25
Earth  magma oceans  
研究证实南非古地壳存在超大的、完全熔融的岩浆房 快报文章
地球科学快报,2022年第19期
作者:  刘学
Microsoft Word(30Kb)  |  收藏  |  浏览/下载:647/0  |  提交时间:2022/10/10
magma  South Africa  
研究表明岩浆房可在短时间内迅速形成 快报文章
地球科学快报,2022年第19期
作者:  刘学
Microsoft Word(30Kb)  |  收藏  |  浏览/下载:639/0  |  提交时间:2022/10/10
magma  Skaergaard intrusion  
英国研究人员揭示超级火山喷发机理 快报文章
地球科学快报,2022年第15期
作者:  王晓晨
Microsoft Word(16Kb)  |  收藏  |  浏览/下载:617/0  |  提交时间:2022/08/10
A volcanic eruption  Magma  pluton growth  
过铝质地壳岩浆的出现可追溯到36亿年前的板块构造运动 快报文章
地球科学快报,2021年第10期
作者:  王晓晨
Microsoft Word(16Kb)  |  收藏  |  浏览/下载:428/0  |  提交时间:2021/05/25
Peraluminous crustal magma  Plate tectonics  
科学家基于新技术预测火山爆发潜在的破坏力 快报文章
地球科学快报,2020年第21期
作者:  王立伟
Microsoft Word(17Kb)  |  收藏  |  浏览/下载:393/0  |  提交时间:2020/11/09
subvolcanic magma  reservoirs  
The Influence of Magma Mixing on the Composition of Andesite Magmas and Silicic Eruption Style 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2020, 47 (13)
作者:  Hodge, K. F.;  Jellinek, A. M.
收藏  |  浏览/下载:10/0  |  提交时间:2020/06/16
andesite  effusive volcanism  explosive volcanism  magma mixing  rheological variations  viscosity variations  
Spatiotemporal Seismic Structure Variations Associated With the 2018 Kilauea Eruption Based on Temporary Dense Geophone Arrays 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2020, 47 (9)
作者:  Wu, Sin-Mei;  Lin, Fan-Chi;  Farrell, Jamie;  Shiro, Brian;  Karlstrom, Leif;  Okubo, Paul;  Koper, Keith
收藏  |  浏览/下载:9/0  |  提交时间:2020/07/02
Kilauea volcano  magma pressurization  summit collapse  seismic interferometry  dike intrusion  
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:33/0  |  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.


  
Post-Collapse Gravity Increase at the Summit of Kilauea Volcano, HawaiModified Letter Turned Commai 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2019
作者:  Poland, Michael P.;  de Zeeuw-van Dalfsen, Elske;  Bagnardi, Marco;  Johanson, Ingrid A.
收藏  |  浏览/下载:25/0  |  提交时间:2020/02/17
Kilauea  microgravity  magma plumbing system  magma supply  magma storage  volcano geodesy