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Understanding rate effects in injection-induced earthquakes 期刊论文
NATURE COMMUNICATIONS, 2020, 11 (1)
作者:  Alghannam, Maryam;  Juanes, Ruben
收藏  |  浏览/下载:6/0  |  提交时间:2020/06/22
Role of Fluid Injection on Earthquake Size in Dynamic Rupture Simulations on Rough Faults 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2020, 47 (13)
作者:  Maurer, Jeremy;  Dunham, Eric M.;  Segall, Paul
收藏  |  浏览/下载:8/0  |  提交时间:2020/06/01
FDMAP  induced seismicity  largest magnitude  simulation  triggered seismicity  injection  
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.


  
Laboratory Study on Fluid-Induced Fault Slip Behavior: The Role of Fluid Pressurization Rate 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2020, 47 (6)
作者:  Wang, Lei;  Kwiatek, Grzegorz;  Rybacki, Erik;  Bonnelye, Audrey;  Bohnhoff, Marco;  Dresen, Georg
收藏  |  浏览/下载:14/0  |  提交时间:2020/07/02
fault slip  fluid injection  induced seismicity  fluid pressurization rate  stick-slip  fault creep  
Mechanical and hydrological effects of seamount subduction on megathrust stress and slip 期刊论文
NATURE GEOSCIENCE, 2020, 13 (3) : 249-+
作者:  Sun, Tianhaozhe;  Saffer, Demian;  Ellis, Susan
收藏  |  浏览/下载:7/0  |  提交时间:2020/05/13
Frictional Stabilities on Induced Earthquake Fault Planes at Fox Creek, Alberta: A Pore Fluid Pressure Dilemma 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2019, 46 (15) : 8753-8762
作者:  Shen, L. W.;  Schmitt, D. R.;  Schultz, R.
收藏  |  浏览/下载:4/0  |  提交时间:2019/11/27
Evolution of the Percolation Threshold in Muds and Mudrocks During Burial 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2019, 46 (14) : 8064-8073
作者:  Daigle, Hugh;  Reece, Julia S.;  Flemings, Peter B.
收藏  |  浏览/下载:5/0  |  提交时间:2019/11/27
percolation  multiphase flow  
Squeezing Marsquakes Out of Groundwater 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2019, 46 (12) : 6333-6340
作者:  Manga, Michael;  Zhai, Guang;  Wang, Chi-Yuen
收藏  |  浏览/下载:6/0  |  提交时间:2019/11/26
induced seismicity  InSight  water on Mars  
Universal Relationship Between Viscous and Inertial Permeability of Geologic Porous Media 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2019, 46 (3) : 1441-1448
作者:  Zhou, Jia-Qing;  Chen, Yi-Feng;  Wang, Lichun;  Cardenas, M. Bayani
收藏  |  浏览/下载:7/0  |  提交时间:2019/11/26
Geophysical Constraints on the Relationship Between Seamount Subduction, Slow Slip, and Tremor at the North Hikurangi Subduction Zone, New Zealand 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2018, 45 (23) : 12804-12813
作者:  Barker, Daniel H. N.;  Henrys, Stuart;  Tontini, Fabio Caratori;  Barnes, Philip M.;  Bassett, Dan;  Todd, Erin;  Wallace, Laura
收藏  |  浏览/下载:6/0  |  提交时间:2019/04/09