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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:84/0  |  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.


  
Tropical cyclone rainfall in the Mekong River Basin for 1983-2016 期刊论文
ATMOSPHERIC RESEARCH, 2019, 226: 66-75
作者:  Chen, Aifang;  Ho, Chang-Hoi;  Chen, Deliang;  Azorin-Molina, Cesar
收藏  |  浏览/下载:36/0  |  提交时间:2019/11/27
Tropical cyclones  Occurrence  Rainfall  Mekong River Basin  
Evaluation of satellite rainfall estimates over the Lake Tana basin at the source region of the Blue Nile River 期刊论文
ATMOSPHERIC RESEARCH, 2018, 212: 43-53
作者:  Fenta, Ayele Almaw;  Yasuda, Hiroshi;  Shimizu, Katsuyuki;  Ibaraki, Yasuomi;  Haregeweyn, Nigussie;  Kawai, Takayuki;  Belay, Ashebir Sewale;  Sultan, Dagnenet;  Ebabu, Kindiye
收藏  |  浏览/下载:18/0  |  提交时间:2019/04/09
Satellite rainfall estimates  Rain gauge measurements  Rainfall occurrence  Cumulative rainfall  Drought-prone  Ethiopia  
Trend in the Co-Occurrence of Extreme Daily Rainfall in West Africa Since 1950 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2018, 123 (3) : 1536-1551
作者:  Blanchet, Juliette;  Aly, Claire;  Vischel, Theo;  Panthou, Geremy;  Sane, Youssouph;  Kane, Mariane Diop
收藏  |  浏览/下载:29/0  |  提交时间:2019/04/09
extreme rainfall  West Africa  co-occurrence  trend  
Co-Occurrence of Extreme Daily Rainfall in the French Mediterranean Region 期刊论文
WATER RESOURCES RESEARCH, 2017, 53 (11)
作者:  Blanchet, Juliette;  Creutin, Jean-Dominique
收藏  |  浏览/下载:16/0  |  提交时间:2019/04/09
rainfall  co-occurrence  spatial extremes  Mediterranean region