Results 121 to 130 of about 119,173 (294)
Annals of Geophysics, 2001 Different methods with different results have been proposed in the scientific literature to identify the possible occurrence of weak seismo-magnetic ULF emissions. In September-October, 1997 Central Italy was struck by repeated seismic activity (M L <
A. Piancatelli, M. Vellante, U. Villante
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Cubic moment–duration relationship of low-frequency earthquakes
Geophysical Journal InternationalSUMMARY Low-frequency earthquakes (LFEs) are seismic phenomena with the shortest timescale among various slow earthquakes observed on broad-band timescales. To understand the nature of such a broad-band slow phenomenon, it is important to investigate the rupture evolution process of individual slow events, such as LFEs.
Genki Oikawa, Naofumi Aso
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Additional file 2 of Bridging the gap between low-frequency and very-low-frequency earthquakes
, 2020 Additional file 2. Additional Figures S1, S2 and Text S1.
Masuda, Koki +3 more
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Study on fracture parameter calibration and failure characteristics of rock with hole and crack
Deep Underground Science and Engineering, EarlyView.The SIF and plastic zone equations for a single hole and crack have been derived. The model's failure state leads to the identification of four types of cracks. The plastic zone increases with increased brittleness and decreased crack length. Abstract Cracks within the surrounding rock of roadways significantly affect their stability and failure ...
Shaochi Peng, Wensong Wang
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A stochastic approach to synthesizing response spectrum compatible seismic accelerograms [PDF]
, 2007 Regulatory agencies require the use of artificial accelerograms satisfying specific criteria of compatibility with a given design spectrum, as input for certain types of analyses for the aseismic design of critical facilities.
Giaralis, A., Spanos, P. D.
core
Review and prospects of shear test of bolted rock joints
Deep Underground Science and Engineering, EarlyView.The laboratory shear test equipment, test method, and numerical simulation of bolted rock joints were summarized. The shortcomings and limitations of the current research were analyzed, and the research prospects were proposed. Abstract Rock bolting is a critical approach in geotechnical engineering for supporting weak rocks.
Shulin Ren +4 more
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Journal of Applied Mathematics, 2014 The concrete gravity dams are designed to perform satisfactorily during an earthquake since the consequence of failure is catastrophic to the downstream communities. The foundation in a dam is usually modeled by a substructuring approach for the purpose
Gurinderbir S. Sooch, Ashutosh Bagchi
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Fractal analysis of geomagnetic data to decipher pre-earthquake processes in the Andaman–Nicobar region, India [PDF]
Nonlinear Processes in GeophysicsSeismo-electromagnetic (SEM) signatures recorded in geomagnetic data prior to an earthquake have the potential to reveal pre-earthquake processes in focal zones.
R. Prajapati, K. Arora
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Deep Underground Science and Engineering, EarlyView.The effects of grout strength and thickness on the shear behavior of bolt–grout interfaces (BGI) under constant normal stiffness conditions are investigated. Shear strength, failure modes, and acoustic emission characteristics are examined. The findings reveal that grout strength exerts a significantly greater influence on BGI shear strength and ...
Sunhao Zhang +5 more
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Applied SciencesThe Longmen Shan Fault Zone is marked by intricate geological structures and frequent seismic activity, which gives rise to persistent seismic hazards. To tackle the challenge of capturing the multi-temporal characteristics of earthquake frequency, this ...
Zhenyu Fang, Yuan Xue, Run Liu
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