Results 61 to 70 of about 145,917 (290)
Simulation of underground gravity gradients from stochastic seismic fields
, 2009 We present results obtained from a finite-element simulation of seismic displacement fields and of gravity gradients generated by those fields. The displacement field is constructed by a plane wave model with a 3D isotropic stochastic field and a 2D ...
B. L. N. Kennett +7 more
core +1 more source
An optimizing microseismic method for rock burst early warning based on mining production process
Deep Underground Science and Engineering, EarlyView.A classification early warning method of rock burst based on hourly microseismic data is proposed, which can be combined with the on‐site production process to provide more timely warning. Abstract Microseismic (MS) events have been reported in nearly every coal mining country, which could well lead to rock burst in underground coal mines.
Zepeng Han +6 more
wiley +1 more source
Ambient noise multimode surface wave tomography
Progress in Earth and Planetary ScienceSeismic techniques using earthquakes are powerful tools for exploring the Earth’s internal structure. However, the earthquake distribution limits the spatial resolution.
Kiwamu Nishida +2 more
doaj +1 more source
Surface-wave imaging with nonrandom traffic seismic sourcesKey points
Earthquake SciencePassive surface wave imaging has been a powerful tool for near-surface characterization in urban areas, which extracts surface wave signals from ambient seismic noise and then estimates subsurface shear wave velocity by inversion of the measured phase ...
Binbin Mi, Jianghai Xia, Hao Zhang
doaj +1 more source
Seismic Waves and the Slinky: A Guide For Teachers [PDF]
This teaching guide is designed to introduce the concepts of waves and seismic waves that propagate within the Earth, and to provide ideas and suggestions for how to teach about seismic waves. The guide provides information on the types and properties of
Lawrence Braile
core +3 more sources
Modeling near-field tsunami observations to improve finite-fault slip models for the 11 March 2011 Tohoku earthquake [PDF]
, 2011 The massive tsunami generated by the 11 March 2011 Tohoku earthquake (M_w 9.0) was widely recorded by GPS buoys, wave gauges, and ocean bottom pressure sensors around the source.
Cheung, K. F. +4 more
core
Deep Underground Science and Engineering, EarlyView.Joint orientation significantly affects P‐wave velocity, with the highest velocity at zero‐degree angles, decreasing to 30° as the angle increases. The velocity increases slightly from 30 to 45 degrees but sharply decreases from 45 to 90 degrees. Abstract Determination of the required parameters in different science contexts using the ultrasonic wave ...
Yaghoob Zarei +4 more
wiley +1 more source
Numerical Simulation of Seismic-Wave Propagation in Specific Layered Geological Structures
Applied SciencesThis study presents a numerical simulation approach used to investigate seismic-wave propagation in specific geological structures. Using the LS-DYNA software, the simulation incorporated a TNT explosion model to simulate seismic energy released during ...
Chunyue Hao +3 more
doaj +1 more source
Seismic Tremor Reveals Spatial Organization and Temporal Changes of Subglacial Water System [PDF]
, 2019 ©2019. American Geophysical Union. All Rights Reserved.Subglacial water flow impacts glacier dynamics and shapes the subglacial environment. However, due to the challenges of observing glacier beds, the spatial organization of subglacial water systems and
Amundson, Jason M. +4 more
core +1 more source
Deep Underground Science and Engineering, EarlyView.The flowchart illustrates rock specimen testing, vibration signal acquisition, and feature extraction with Gaborlet and sparse filtering for classification. Abstract Traditional lithology identification methods mainly rely on core sampling and well‐logging data.
Jian Hao +5 more
wiley +1 more source