Results 71 to 80 of about 12,685 (312)

Pyroclastic Density Current Facies in the Millennium Eruption of Tianchi Volcano, Northeast China: Insights From Topography, Stratigraphy, Granulometry, and Petrography

Frontiers in Earth Science, 2020
Large-scale pyroclastic density currents (PDCs) produce inhomogeneity of distributions, thicknesses, stratigraphic structures, and temperatures, thereby causing poor understanding of PDC emplacement processes.
Bo Zhao, Bo Zhao, Jiandong Xu, Jiandong Xu, Hongmei Yu, Hongmei Yu, Zhengquan Chen, Zhengquan Chen   +7 more
doaj   +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

Analysis on intelligent upgrading and transformation of seismic stations in Hebei Province

地震科学进展
With the increasing number of earthquake stations and scaling up of unmanned stations, the traditional operation and maintenance mode of stations is facing various challenges such as frequent power supply, communication, and instrument failures.
Qin Tian, Kainan Chen, Pengjie Zhang
doaj   +1 more source

Building disaster-resilient communities and economies [PDF]

, 2014
Executive summary The need for building resilience Natural hazards have the potential to devastate communities and economies around the world. Natural hazards are inevitable, but not natural disasters.
United Nations Environment Programme
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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

Building damage detection from multi-feature fusion of Sentinel-1/2 imagery using variational autoencoder and MLP-Mixer network: insights from the Jishishan earthquake

Big Earth Data
Timely and accurate identification of earthquake-induced building damage is critical for effective emergency response and post-disaster reconstruction.
Jing Wang, Xiwei Fan, Yuanmeng Qi, Wenyu Nie, Jiwen An, Xuefei Zhang, Hua Wu   +6 more
doaj   +1 more source

Seismic analysis and design of tunnels within fault ground: A review

Deep Underground Science and Engineering, EarlyView.
The research methods of seismic response of tunnels within fault ground, including field investigations, analytical solutions, physical experiments, and numerical simulations, and seismic countermeasures are discussed. The present study examines the shortcomings and limitations of the current research and design, and puts forward proposals for future ...
Xingda Wang, Yujing Jiang, Xuepeng Zhang, Yuyong Jiao, Ningbo Li, Xiao Wang, Bo Li   +6 more
wiley   +1 more source

Proceedings volume, Basin and Range Province Seismic-Hazards Summit

, 1998
Title from PDF title page (viewed on July 11, 2017).This archived document is maintained by the State Library of Oregon as part of the Oregon Documents Depository Program.

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Thermal‐induced fracture evolution and acoustic signature of Beishan granite: Insights into tensile strength of barrier system for high‐level radioactive waste disposal

Deep Underground Science and Engineering, EarlyView.
The tensile strength of granite, a proposed host for nuclear waste, degrades severely above 400°C. We link this to specific microcracking patterns captured by acoustic emission, establishing a scientific basis for assessing repository safety under thermal load.
Wei Zeng, Shijie Li, Xiaozhao Li, Zhen Huang, Shangtong Yang, Wentao Xu, Biao Wang, Yun Wu   +7 more
wiley   +1 more source

Designing Web-enabled services to provide damage estimation maps caused by natural hazards

, 2010
The availability of building stock inventory data and demographic information is an important requirement for risk assessment studies when attempting to predict and estimate losses due to natural hazards such as earthquakes, storms, floods or tsunamis ...
Gutierrez Corea, Federico Vladimir, Wachowicz, Monica, Lang, Dominik H., Bernabe Poveda, Miguel Angel, Strauch, Wilfried, Manso Callejo, Miguel Ángel   +5 more
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