Results 1 to 10 of about 1,245 (158)
Dizhen xuebao, 2023 以2000年两次MW 6.5冰岛地震为例，利用近场地下水位的同震响应和震后响应约束孔隙模型参数，分析了孔隙回弹效应造成的地表变形大小和时间演化过程。首先利用数值模拟方法获得地震造成的孔隙压力变化和测井水位响应的时间序列，并以测井水位的同震阶跃幅值和震后水位恢复速率分别约束孔隙模型中的Skempton系数和扩散系数；然后基于孔隙弹性模型使用最优孔隙参数模拟震后孔隙回弹效应引起的地壳变形。结果显示：孔隙压力的同震响应控制着孔隙回弹引起的地壳变形，其变形速率与流体扩散系数呈正相关关系 ...
Zhantian Liu +3 more
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Dizhen xuebao, 2022 为探讨“最不利地震动”概念在地下结构抗震设计中的适用性，以软土地铁区间隧道为对象建立相应的地层-结构动力分析模型。以直径变形率为分析指标，基于动力时程方法研究18条不同输入地震动作用下隧道结构动力响应的分布及差异性，得出基于隧道地震响应的输入地震动排序，并通过调幅手段对比分析了地面峰值加速度（PGA）和隧道埋深变化对隧道结构地震动响应排序的影响规律。最后，评价了不同输入地震动参数，包括峰值加速度、峰值速度、峰值位移、绝对累积速度（CAV）和阿里亚斯（Arias）强度（IA）与隧道地震响应之间的相关性 ...
Haitao Yu, Jing Li, Qi Wang
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Functional Ecology, Volume 37, Issue 5, Page 1390-1406, May 2023., 2023 Read the free Plain Language Summary for this article on the Journal blog. Abstract Hydrothermal vent systems are important biodiversity hotspots that host a vast array of unique species and provide information on life's evolutionary adaptations to extreme environments.
Yiming V. Wang +9 more
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Evaluating the impact of caribou habitat restoration on predator and prey movement
Conservation Biology, Volume 37, Issue 2, April 2023., 2023 Abstract Fragmentation of the boreal forest by linear features, including seismic lines, has destabilized predator–prey dynamics, resulting in the decline of woodland caribou (Rangifer tarandus caribou) populations. Restoration of human‐altered habitat has therefore been identified as a critical management tool for achieving self‐sustaining woodland ...
Melanie Dickie +4 more
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Disasters, Volume 47, Issue 2, Page 499-518, April 2023., 2023 This paper contains transdisciplinary reflections from both scientists and local NGO (nongovernmental organisation) managers on the international small island tourism destination of Gili Trawangan, Indonesia. These viewpoints centre on the impacts of, as well as the short‐ and long‐term adaptation strategies and sustainability opportunities associated ...
Stefan Partelow +4 more
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Journal of Traumatic Stress, Volume 36, Issue 1, Page 129-143, February 2023., 2023 Abstract During the Great East Japan Earthquake, many people experienced the loss of family and friends, among other traumatic events. This study sought to clarify the impact of the loss of significant close others on posttraumatic stress symptoms (PTSS), as well as the factors associated with PTSS, among individuals who experienced the loss of ...
Mayumi Harigane +9 more
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A systematic review of 20 years of crisis and disaster research: Trends and progress
Risk, Hazards &Crisis in Public Policy, Volume 12, Issue 4, Page 374-392, December 2021., 2021 Abstract The field of crisis and disaster studies has proliferated over the past two decades. Attention is bound to grow further as the world negotiates the prolonged challenges of the Covid‐19 pandemic. In this review, we provide an overview of the main foci, methods, and research designs employed in the crisis and disaster research fields in the ...
Jeroen Wolbers +2 more
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Journal of Traumatic Stress, Volume 34, Issue 3, Page 512-525, June 2021., 2021 Abstract The 2011 Tohoku earthquake and tsunami in Japan was an extraordinarily stressful incident that caused harmful psychological reactions, such as posttraumatic stress disorder (PTSD), among affected individuals. However, a proportion of exposed individuals experienced posttraumatic growth (PTG), characterized by a noticeable degree of personal ...
Yasushi Kyutoku +4 more
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基于数值子结构方法的防屈曲支撑高层钢结构地震动力分析 [PDF]
, 2018 近年来,高层建筑结构地震动力响应分析成为一个热点问题。防屈曲支撑构件(BRB)承载力高,延性与滞能性高,在强震作用下具有良好的耗能性能,正日益普及并用于高层建筑结构。高层建筑结构在地震作用下的失效往往是由部分关键构件损坏引起,而其他大部分构件仍处于弹性或小变形状态。采用常规的整体建模分析和Newton-Raphson迭代方法(NR)效率较低,而数值子结构方法将结构中进入强非线性状态或者发生严重损伤的构件进行隔离并精细化模拟,使大规模的非线性计算转化为主结构的线弹性分析和子结构的非线性分析 ...
古泉, 林纯
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Dizhen xuebao, 2022 地表不规则地形的存在往往会引起地震波的散射，进而产生局部地震动放大或衰减的现象。虽然地形效应最早在异常地震记录中被发现，然而利用地形影响台阵记录到的地震动数据却少之又少。基于1992年在我国台湾翡翠河谷上观测到的六条地形影响台阵记录，利用线源SH波入射下非对称V形河谷地震波传播解析理论，模拟得到了河谷台阵各点的地震动，揭示了翡翠河谷地形效应对地震动影响的规律。与实测记录的对比结果表明利用笔者提出的地震波传播解析理论能够较好地反映河谷地形对地震动的影响。
Yufeng Gao, Denghui Dai, Ning Zhang
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