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东京大学提出有关大气组成演化的颠覆性结论 快报文章
地球科学快报,2025年第7期
作者:  张树良
Microsoft Word(15Kb)  |  收藏  |  浏览/下载:458/0  |  提交时间:2025/04/10
atmosphere  GOE  volcanic activity  Archean  numerical model  
最新研究揭示地幔过渡带含水区域与火山活动之间的关联机制 快报文章
地球科学快报,2025年第7期
作者:  王晓晨
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mantle  high water content  volcanic activity  
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:59/0  |  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.


  
A tree ring-based winter temperature reconstruction for the southeastern Tibetan Plateau since 1340 CE 期刊论文
CLIMATE DYNAMICS, 2019, 53: 3221-3233
作者:  Huang, Ru;  Zhu, Haifeng;  Liang, Eryuan;  Liu, Bo;  Shi, Jiangfeng;  Zhang, Ruibo;  Yuan, Yujiang;  Griessinger, Jussi
收藏  |  浏览/下载:17/0  |  提交时间:2019/11/27
Dendroclimatology  Southeastern Tibetan Plateau  Winter temperature  Solar activity  Volcanic eruption  
Statistical link between external climate forcings and modes of ocean variability 期刊论文
CLIMATE DYNAMICS, 2018, 50: 3649-3670
作者:  Malik, Abdul;  Bronnimann, Stefan;  Perona, Paolo
收藏  |  浏览/下载:15/0  |  提交时间:2019/04/09
Atlantic multi-decadal oscillation  Pacific decadal oscillation  El Nino southern oscillation  Solar activity  Volcanic eruptions  De-trended semi-partial-cross-correlation analysis  
Quantifying the impact of early 21st century volcanic eruptions on global-mean surface temperature 期刊论文
ENVIRONMENTAL RESEARCH LETTERS, 2017, 12 (5)
作者:  Monerie, Paul-Arthur;  Moine, Marie-Pierre;  Terray, Laurent;  Valcke, Sophie
收藏  |  浏览/下载:14/0  |  提交时间:2019/04/09
climate variability  hiatus  volcanic activity  climate modelling