Results 131 to 140 of about 7,254 (288)

Comparative Analysis of Seismicity Across Three Depth‐Dependent Slip Regimes in the Japan Trench Subduction Zone

Geophysical Research Letters
Understanding the cause of spatial variations in seismicity is crucial for comprehending the physics governing earthquake activity. Off Iwate, in the northern Japan Trench subduction zone, the plate boundary can be divided into three distinct zones based
Yuta Ito, Tomoaki Nishikawa, Yoshihiro Ito, Shukei Ohyanagi, Hiroyuki Noda   +4 more
doaj   +1 more source

The 1992 Nicaragua earthquake: a slow tsunami earthquake associated with subducted sediments

, 1993
The 1992 Nicaragua earthquake was a ‘tsunami earthquake‘; that is, it generated tsunamis disproportionately large for its surface-wave magnitude, M_s. The moment magnitude, M_w, determined from long-period (~250-s) surface waves, was 7.6, significantly ...
Kikuchi, Masayuki, Kanamori, Hiroo
core  

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

Parallel dynamics of slow slips and fluid-induced seismic swarms

Nature Communications
Earthquake swarms may be driven by fluids, through hydraulic injections or natural fluid circulation, but also by slow and aseismic slip transients. Understanding the driving factors for these prolific sequences and how they can potentially develop into ...
Philippe Danré, Louis De Barros, Frédéric Cappa, Luigi Passarelli   +3 more
doaj   +1 more source

Unveiling spatial heterogeneity in urban underground space development patterns and mechanisms for differentiated planning: A points of interest‐based study of Shanghai

Deep Underground Science and Engineering, EarlyView.
This study investigated the spatial patterns and development mechanisms of urban underground space (UUS) in Shanghai using underground points of interest data. It revealed distinct development mechanisms between the main city and suburbs, highlighting the need for differentiated UUS planning and policies to optimize underground space resources ...
Chenxiao Ma, Fangle Peng, Yongkang Qiao, Yunhao Dong   +3 more
wiley   +1 more source

Slow diffusive fault slip propagation following the 6 April 2009 L'Aquila earthquake, Italy

, 2009
Two laser strainmeters that operate at 1400-m depth, about 20 km NE of the epicenter of the 6 April 2009 magnitude-6.3 L’Aquila, Italy, earthquake, have produced a clear record of postseismic strain. Here we show the results from the analysis of the data
AMORUSO, ANTONELLA, CRESCENTINI, LUCA
core   +1 more source

Dynamic cracking properties and generating conditions of coal under rapid gas release

Deep Underground Science and Engineering, EarlyView.
Gas release tests revealed that crack initiation and propagation are jointly controlled by initial crack length, residual strength, and gas release velocity. A new outburst risk coefficient was thus developed from a fracture mechanics perspective, offering a novel predictive approach.
Bing Zhang, Hanpeng Wang, Liang Yuan, Guofeng Yu, Wei Wang, Benliang Chen, Bo Ren   +6 more
wiley   +1 more source

Advances in vital‐sign prediction and early‐warning models for underground coal mine workers integrating environmental factors

Deep Underground Science and Engineering, EarlyView.
This review synthesizes advances in predicting miners' vital signs by integrating environmental monitoring (dust, temperature, and gas) with physiological data. It highlights multi‐source data fusion techniques and early‐warning models for enhanced occupational safety in underground coal mines.
Junji Zhu, Dawei Cui, Yingjie Liu, Yuntao Liang, Yue Zhang   +4 more
wiley   +1 more source

Comparison of statistical low-frequency earthquake activity models

Earth, Planets and Space
Slow earthquakes are slow fault slip events. Quantifying and monitoring slow earthquake activity characteristics are important, because they may change before large earthquakes occur.
Tomoaki Nishikawa
doaj   +1 more source

Fluid‐induced slip on a rate‐and‐state fault during co‐ and post‐injection: The interplay of fluid pressure diffusion and poroelastic stress

Deep Underground Science and Engineering, EarlyView.
Fault slip can occur ahead of the injection pressure front due to poroelastic stress. Our model captures the interaction of pressure, stress, and friction, providing new insights into injection‐induced seismicity and post‐injection fault slip. Shut‐in operations can either mitigate or accelerate seismic events depending on fault conditions and ...
Qifeng Xie, Lei Wang, Qi Li
wiley   +1 more source