Results 41 to 50 of about 6,954,758 (263)

Energy radiation from intermediate‐ to large‐magnitude earthquakes: Implications for dynamic fault weakening [PDF]

Journal of Geophysical Research: Solid Earth, 2010
The amount of energy radiated from an earthquake can be measured using recent methods based on earthquake coda signals and spectral ratios. Such methods are not altered by either site or directivity effects, with the advantage of a greatly improved accuracy.
Luca Malagnini, Stefan Nielsen, Kevin Mayeda, Enzo Boschi   +3 more
openaire   +3 more sources

Dynamic geo‐hydrogeological monitoring‐driven situational awareness for real‐time floor water inrush risk prediction in deep mining

Deep Underground Science and Engineering, EarlyView.
The fused data extracted from the distributed monitoring system as the data basis, combined with dynamic geological data, are imported into a deep learning model. As the geological conditions of mining and excavation change, the risk of water inrush at the working face is retrieved in real time.
Yongjie Li, Huiyong Yin, Fangying Dong, Tao Wu, Chao Zhang   +4 more
wiley   +1 more source

A Multi-Parametric and Multi-Layer Study to Investigate the Largest 2022 Hunga Tonga–Hunga Ha’apai Eruptions

Remote Sensing, 2022
On 20 December 2021, after six quiet years, the Hunga Tonga–Hunga Ha’apai volcano erupted abruptly. Then, on 15 January 2022, the largest eruption produced a plume well registered from satellites and destroyed the volcanic cone previously formed in 2015,
Serena D’Arcangelo, Alessandro Bonforte, Angelo De Santis, Salvatore Roberto Maugeri, Loredana Perrone, Maurizio Soldani, Giovanni Arena, Federico Brogi, Massimo Calcara, Saioa A. Campuzano, Gianfranco Cianchini, Alfredo Del Corpo, Domenico Di Mauro, Cristiano Fidani, Alessandro Ippolito, Stefania Lepidi, Dedalo Marchetti, Adriano Nardi, Martina Orlando, Alessandro Piscini, Mauro Regi, Dario Sabbagh, Zeren Zhima, Rui Yan   +23 more
doaj   +1 more source

Performance assessment of a potential underground thermal storage facility: Case study of the closed mine Prosper‐Haniel in the Ruhr coal mining area in Germany

Deep Underground Science and Engineering, EarlyView.
This study demonstrates the feasibility of an underground closed‐loop thermal storage facility at a post‐mining site, intended for seasonal heat energy storage. Its principal design shows water flow directions in winter and summer (1, 2), heat pumps (3), an upper water reservoir (4), and connecting pipes (5).
Dmytro Rudakov, Oleksandr Inkin
wiley   +1 more source

Radiation dose reduction efficiency of buildings after the accident at the Fukushima Daiichi Nuclear Power Station. [PDF]

PLoS ONE, 2014
Numerous radionuclides were released from the Fukushima Daiichi Nuclear Power Station (F1-NPS) in Japan following the magnitude 9.0 earthquake and tsunami on March 11, 2011. Local residents have been eager to calculate their individual radiation exposure.
Satoru Monzen, Masahiro Hosoda, Minoru Osanai, Shinji Tokonami   +3 more
doaj   +1 more source

Radiated energy estimations from finite‐fault earthquake slip models [PDF]

Geophysical Research Letters, 2014
AbstractRadiated seismic energy is expressed in terms of slip velocities by using an overdamped dynamics approximation. This formulation is used to estimate the radiated energy from earthquake finite‐fault models. A correction term is found to show that the approximation underestimates the radiated energy as defined by the full dynamics.
openaire   +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

Quick output parameters related to the 7 January 2025 M6.8 earthquake in Dingri County, Xizang

地震科学进展
At 09:05 on January 7, 2025 (Beijing time), a magnitude 6.8 earthquake occurred in Dingri, Xizang Autonomous Region. The Institute of Geophysics, China Earthquake Administration launched a rapid earthquake emergency response after the earthquake, and ...
Kun Chen, Ting Yang, Yongzhe Wang, Xiangyun Guo, Zhe Zhang, Xu Zhang, Ruifeng Liu   +6 more
doaj   +1 more source

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

Mine earthquake mechanism of extremely thick strata based on focalmemchanism analysis

Meitan xuebao, 2023
In the Ordos mining area of North China, the Jurassic coal seam is commonly overlain by extremely thick cretaceous sandstone strata. Based on the seismic displacement field and relative moment tensor inversion method, this paper investigates the mine ...
Xianxi BAI, Anye CAO, Yaoqi LIU, Changbin WANG, Xu YANG, Yingchun ZHAO, yao YANG   +6 more
doaj   +1 more source