Results 71 to 80 of about 145,917 (290)

Instability mechanism and failure characteristics of underground cavern in block system under the action of seismic waves

Deep Underground Science and Engineering, EarlyView.
Seismic waves with tensile stress, high amplitude, and low frequency are most likely to trigger block instability and sliding. Blocks with a single sliding surface are more prone to movement than those with multiple constraints, and roof‐positioned blocks are especially vulnerable to slide.
Xiao Wang, Jinxiao Liu, Gaoshuo Zhang, Wenxin Li, Changdi He   +4 more
wiley   +1 more source

Deriving micro- to macro-scale seismic velocities from ice-core c axis orientations [PDF]

The Cryosphere, 2018
One of the great challenges in glaciology is the ability to estimate the bulk ice anisotropy in ice sheets and glaciers, which is needed to improve our understanding of ice-sheet dynamics.
J. Kerch, J. Kerch, A. Diez, I. Weikusat, I. Weikusat, O. Eisen, O. Eisen   +6 more
doaj   +1 more source

Strengthening urban resilience in China through underground infrastructures management: Addressing global climate challenges with technological solutions

Deep Underground Science and Engineering, EarlyView.
This paper explores how climate‐resilient technologies, such as smart grids, digital twins, and self‐healing materials, can enhance urban resilience. It highlights the urgent need for proactive planning, public‐private collaboration, and data‐driven innovation to future‐proof underground infrastructure amid accelerating climate and urban pressures ...
Kai Chen Goh, Tonni Agustiono Kurniawan, Christia Meidiana, Abdelkader Anouzla, Faissal Aziz, Imran Ali, Joan Cecilia C. Casila, M. Imran Khan, Dongdong Zhang, Meihui Jiang, Mohd Hafiz Dzarfan Othman, Md Munir Hayet Khan, Kasun Kumara Dissanayake   +12 more
wiley   +1 more source

Detectable seismic consequences of the interaction of a primordial black hole with Earth

, 2012
Galaxies observed today are likely to have evolved from density perturbations in the early universe. Perturbations that exceeded some critical threshold are conjectured to have undergone gravitational collapse to form primordial black holes (PBHs) at a ...
Alcock, Burns, Burns, Carr, Dahlen, Edmonds, Frans Pretorius, Hawking, Jeroen Tromp, Labun, Lisanti, Shravan Hanasoge, Sreekumar, Yang Luo, Zel'Dovich   +14 more
core   +1 more source

Advancing mine pillar design: Evaluating traditional methods and integrating AI for enhanced stability of pillars in the Great Dyke, Zimbabwe

Deep Underground Science and Engineering, EarlyView.
B1 is bord width 1, B2 is bord width 2, L is the pillar length, W is the pillar width, red color and letter A represent the pillars, and white color and number 1 represent excavated areas. Pstress is the average pillar stress; σv is the vertical component of the virgin stress, MPa; and e is the areal extraction ratio. e = B o B o + B P ${\rm{e}}=\frac{{
Tawanda Zvarivadza, Hendrik Grobler, Peter Apata Olubambi, Moshood Onifade, Manoj Khandelwal   +4 more
wiley   +1 more source

Dynamic response of offshore wind turbine monopile foundations in layered soils under wind, wave and earthquake actions

Applied Ocean Research
Earthquakes occur frequently in China’s southeast coastal areas. Therefore, in this region, offshore wind turbine (OWT) structures are highly likely to be simultaneously affected by wind, waves and earthquakes. Firstly, based on the wave theory and Snell’
Zhibo Chen, Feng Chen, Haibo Liu, Guangwei Cao, Wei Huang   +4 more
doaj   +1 more source

Dynamic Response Analysis of Buried Drainage Pipes for Polymer Grouting Trenchless Rehabilitation under the Traveling Wave Effect

Advances in Civil Engineering, 2022
The polymer grouting nonexcavation repair technology has been widely used in the repair of underground pipeline leaks, but the seismic response to the polymer repair pipeline is currently using a consistent excitation of seismic input without considering
Fengyang Miao, Weiguo Li, Jianguo Xu, Zhihao Chen, Xiaoyu Feng   +4 more
doaj   +1 more source

Fe alloy slurry and a compacting cumulate pile across Earth's inner-core boundary

, 2019
Seismic observations show a reduced compressional-wave gradient at the base of the outer core relative to the preliminary reference Earth model and seismic wave asymmetry between the east-west hemispheres at the top of the inner core.
Dygert, Nick, Lin, Jung-Fu, Nelson, Peter, Zhang, Youjun   +3 more
core   +1 more source

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

Deep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu, Tao Li, Ruiqi Yuan, Yue Li, Bingni Wu, Bo Liu, Zhengding Deng, Galindo Rubén, Fausto Molina‐Gómez   +8 more
wiley   +1 more source

Properties of Flares-Generated Seismic Waves on the Sun

, 2005
The solar seismic waves excited by solar flares (``sunquakes'') are observed as circular expanding waves on the Sun's surface. The first sunquake was observed for a flare of July 9, 1996, from the Solar and Heliospheric Observatory (SOHO) space mission ...
A. G. Kosovichev, A.-C. Donea, A.-C. Donea, A.G. Kosovichev, A.G. Kosovichev, A.G. Kosovichev, A.G. Kosovichev, A.G. Kosovichev, C.L. Wolff, D.C. Braun, G.H. Fisher, G.J. Hurford, G.J. Hurford, J.J. Podesta, J.J. Podesta, K. Shibata, M. Medrek, M.A. Livshits, N.D. Kostiuk, P.A. Sturrock, P.H. Scherrer, T.E. Abdelatif, T.L. Duvall Jr., Z. Svestka   +23 more
core   +1 more source