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Pore-scale investigation of the use of reactive nanoparticles for in situ remediation of contaminated groundwater source 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (24) : 13366-13373
作者:  Pak, Tannaz;  de Lima Luz, Luiz Fernando, Jr.;  Tosco, Tiziana;  Ruiz Costa, Gabriel Schubert;  Rangel Rosa, Paola Rodrigues;  Archilha, Nathaly Lopes
收藏  |  浏览/下载:10/0  |  提交时间:2020/06/09
NAPL in situ degradation  groundwater remediation  nanoremediation  zero-valent iron nanoparticle  X-ray-computed microtomography  
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.


  
Instantaneous rock transformations in the deep crust driven by reactive fluid flow 期刊论文
NATURE GEOSCIENCE, 2020, 13 (4) : 307-+
作者:  Beinlich, A.;  John, T.;  Vrijmoed, J. C.;  Tominaga, M.;  Magna, T.;  Podladchikov, Y. Y.
收藏  |  浏览/下载:3/0  |  提交时间:2020/05/13
High Injection Rates Counteract Formation of Far-Reaching Fluid Migration Pathways at The Geysers Geothermal Field 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2020, 47 (4)
作者:  Lasocki, Stanislaw;  Orlecka-Sikora, Beata
收藏  |  浏览/下载:1/0  |  提交时间:2020/07/02
Discriminating Underground Nuclear Explosions Leading To Late-Time Radionuclide Gas Seeps 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2020, 47 (13)
作者:  Harp, Dylan R.;  Bourret, S. Michelle;  Stauffer, Philip H.;  Kwicklis, Edward M.
收藏  |  浏览/下载:5/0  |  提交时间:2020/05/13
analytical  barometric pumping  gas transport  inverse  
U-Th Dating of Syntectonic Calcite Veins Reveals the Dynamic Nature of Fracture Cementation and Healing in Faults 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2019, 46 (22) : 12900-12908
作者:  Williams, Randolph T.;  Mozley, Peter S.;  Sharp, Warren D.;  Goodwin, Laurel B.
收藏  |  浏览/下载:9/0  |  提交时间:2020/02/17
faults  earthquakes  healing  sealing  fractures  veins  
Roughness Control on Multiphase Flow in Rock Fractures 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2019
作者:  Hu, Ran;  Zhou, Chen-Xing;  Wu, Dong-Sheng;  Yang, Zhibing;  Chen, Yi-Feng
收藏  |  浏览/下载:6/0  |  提交时间:2019/11/27
multiphase flow  rock fractures  displacement pattern  phase diagram  energy dissipation  
Disentangling the Simultaneous Effects of Inertial Losses and Fracture Dilation on Permeability of Pressurized Fractured Rocks 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2019, 46 (15) : 8862-8871
作者:  Zhou, Jia-Qing;  Chen, Yi-Feng;  Tang, Huiming;  Wang, Lichun;  Cardenas, M. Bayani
收藏  |  浏览/下载:6/0  |  提交时间:2019/11/27
Pore-Scale Explanation of the Archie's Cementation Exponent: Microstructure, Electrical Anisotropy, and Numerical Experiments 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2019, 46 (11) : 5799-5807
作者:  Yue, Wenzheng
收藏  |  浏览/下载:6/0  |  提交时间:2019/11/26
electrical anisotropy  pore microstructure  digital rock  formation factor  Archie'  s formula  lattice gas automata  
INDUCED SEISMICITY Fluid-induced aseismic fault slip outpaces pore-fluid migration 期刊论文
SCIENCE, 2019, 364 (6439) : 464-+
作者:  Bhattacharya, Pathikrit;  Viesca, Robert C.
收藏  |  浏览/下载:2/0  |  提交时间:2019/11/27