Results 61 to 70 of about 1,357,139 (273)
Deep Underground Science and Engineering, EarlyView.This study investigates the damage evolution and failure mechanisms of tunnel lining concrete in active fault zones through uniaxial compression tests integrated with acoustic emission (AE) monitoring. A strong linear correlation is identified between the AE cumulative absolute energy and the total strain energy, providing a reliable energy‐based ...
Shuaida Zhu +4 more
wiley +1 more source
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingSeismic random noise attenuation is an essential step in seismic data processing. Noise in seismic data may degrade their quality, which leads to misinterpretation of Earth's subsurface structures.
Nakka Shekhar, Karthikeyan Elumalai
doaj +1 more source
Frontiers in Earth Science, 2021 Deep Convolutional Neural Networks (DCNN) have the ability to learn complex features and are thus widely used in the field of seismic signal denoising with low signal-to-noise ratio (SNR).
Zhitao Gao +7 more
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A single-station method for the detection, classification and location of fin whale calls using ocean-bottom seismic stations [PDF]
, 2015 Passive seismic monitoring in the oceans uses long-term deployments of Ocean Bottom Seismometers (OBSs). An OBS usually records the three components of ground motion and pressure, typically at 100Hz.
Luis Matias +3 more
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Deep Underground Science and Engineering, EarlyView.This study quantitatively analyzed the spatiotemporal evolution of stress redistribution ahead of the working face by integrating coal seam distribution, tectonic stress anomalies, gas pressure, and mining‐induced disturbances. An R‐value criterion for coal and gas outburst (CGO) risk assessment was established based on energy principles.
Yingjie Zhao +7 more
wiley +1 more source
Pre-failure behaviour of an unstable limestone cliff from displacement and seismic data [PDF]
Natural Hazards and Earth System Sciences, 2010 We monitored the displacement and seismic activity of an unstable vertical rock slice in a natural limestone cliff of the southeast Vercors massif, southeast France, during the months preceding its collapse.
J.-L. Got, P. Mourot, J. Grangeon
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Regional Seismic Wavefield Propagation [PDF]
, 2004 Through the examination of local and regional seismic waveform data the crust and upper mantle of southern California are investigated. Using local and regional seismic phases such as Pn, Sn, PL, and surface waves, seismic wave velocities of interesting
Savage, Brian Kirk
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Earthquake Engineering &Structural Dynamics, EarlyView.ABSTRACT Rocking podium isolation systems have gained significant research interest as a method of limiting seismic demands on superstructures and eliminating residual post‐earthquake drifts through self‐centring behaviour. However, while numerous models of varying complexity, including analytical, phenomenological, and physical formulations, have been
Marawan Zaki +2 more
wiley +1 more source
Dynamic features of “Petrozavodsk” seismic station
Transactions of the Karelian Research Centre of the Russian Academy of Sciences, 2016 The paper is devoted to the estimability and recordability of seismic events, namely the research of the noise power spectral density (PSD) and its diurnal variation around “Petrozavodsk” seismic station (PTRZ), located within the Onega structure of the ...
Александр Валерьевич Климовский +5 more
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Seismic noise emission induced by seismic waves [PDF]
Geophysical Journal International, 1994 The in situ rock undergoing different kinds of deformation accumulates elastic energy that can be released spontaneously or under artificial effect. Triggering of energy can also be performed by means of a dynamic excitation caused by elastic waves. We carried out special field investigations with the use of seismic vibrators (Vibroseis-like sources ...
N. K. Privalovskiy, I. A. Beresnev
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