GSTDTAP

浏览/检索结果: 共13条,第1-10条 帮助

已选(0)清除 条数/页:   排序方式:
气候变暖将把自然湿地的温室气体“汇”功能削弱57% 快报文章
气候变化快报,2023年第07期
作者:  董利苹
Microsoft Word(14Kb)  |  收藏  |  浏览/下载:615/0  |  提交时间:2023/04/05
Warming  Pristine Wetlands  Greenhouse Gas Sink  Weakening  
An Empirical Power Density-Based Friction Law and Its Implications for Coherent Landslide Mobility 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2020, 47 (11)
作者:  Deng, Yu;  Yan, Shuaixing;  Scaringi, Gianvito;  Liu, Wei;  He, Siming
收藏  |  浏览/下载:9/0  |  提交时间:2020/05/13
coherent landslide  power density  friction law  frictional weakening  landslide mobility  
A Weakening Rheology of Dry Granular Flows With Extensive Brittle Grain Damage in High-Speed Rotary Shear Experiments 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2020, 47 (11)
作者:  Hu, Wei;  Chang, Ching Shung;  McSaveney, Mauri;  Huang, Runqiu;  Xu, Qiang;  Zheng, Yangshuai;  Yu, Jiefu
收藏  |  浏览/下载:6/0  |  提交时间:2020/05/13
rock avalanche  granular flow  weakening rheology  grain damage  
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.


  
Seismic Evidence of Magmatic Rifting in the Offshore Taupo Volcanic Zone, New Zealand 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2019, 46 (22) : 12949-12957
作者:  Gase, Andrew C.;  Van Avendonk, Harm J. A.;  Bangs, Nathan L.;  Luckie, Thomas W.;  Barker, Daniel H. N.;  Henrys, Stuart A.;  Bassett, Dan;  Okaya, David A.;  Jacobs, Katrina M.;  Kodaira, Shuichi;  Fujie, Gou;  Arnulf, Adrien F.;  Yamamoto, Yojiro
收藏  |  浏览/下载:7/0  |  提交时间:2020/02/17
Taupo Volcanic Zone  magmatic rifting  volcanic intrusions  crustal structure  arc volcanism  thermal weakening  
Ural Blocking Driving Extreme Arctic Sea Ice Loss, Cold Eurasia, and Stratospheric Vortex Weakening in Autumn and Early Winter 2016-2017 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2019, 124 (21) : 11313-11329
作者:  Tyrlis, Evangelos;  Manzini, Elisa;  Bader, Juergen;  Ukita, Jinro;  Nakamura, Hisashi;  Matei, Daniela
收藏  |  浏览/下载:7/0  |  提交时间:2020/02/17
Ural blocking  Arctic sea ice loss  midlatitude cold extremes  stratospheric vortex weakening  autumn 2016  
A Definition of Rapid Weakening for Tropical Cyclones Over the Western North Pacific 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2019
作者:  Ma, Zhanhong;  Fei, Jianfang;  Huang, Xiaogang
收藏  |  浏览/下载:5/0  |  提交时间:2019/11/27
tropical cyclone  rapid weakening  sea surface temperature  ocean response  
Understand the Direct Effect of CO2 Increase on Tropical Circulation and TC Activity: Land Surface Warming Versus Direct Radiative Forcing 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2019, 46 (12) : 6859-6867
作者:  Zhou, Wenyu;  Zhao, Ming;  Yang, Da
收藏  |  浏览/下载:6/0  |  提交时间:2019/11/26
direct effect of CO2 increase  tropical circulation weakening  tropical cyclone  land warming  cloud mask effect  cloud radiative forcing  
The Relative Importance of Factors Influencing Tropical Cyclone Rapid Intensity Changes 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2019, 46 (4) : 2282-2292
作者:  Bhalachandran, Saiprasanth;  Haddad, Ziad S.;  Hristova-Veleva, Svetla M.;  Marks, F. D., Jr.
收藏  |  浏览/下载:4/0  |  提交时间:2019/04/09
Tropical cyclone  rapid intensification  rapid weakening  symmetric and asymmetric convection  bay of bengal  linear discriminant analysis  
Assessing the Efficiency of Thermal Pressurization Using Natural Pseudotachylyte-Bearing Rocks 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2018, 45 (18) : 9533-9541
作者:  Brantut, Nicolas;  Mitchell, Thomas M.
收藏  |  浏览/下载:7/0  |  提交时间:2019/04/09
thermal pressurization  pseudotachylyte  damage  dynamic weakening