Results 51 to 60 of about 3,196,310 (243)

Temporal and spatial evolution law of characteristic parameters for coal rock fracture induced seismic wave

open access: yesJournal of Industrial Safety
Quantitative study of the temporal and spatial evolution of seismic wave characteristic parameters is of great significance for accurately identifying the P-wave and S-wave in seismic waves and improving the accuracy in localizing microseismic events ...
Zhongquan Kang   +5 more
doaj   +1 more source

Fast iterative method for seismic wave travel time calculation under undulating surface conditions

open access: yesFrontiers in Environmental Science, 2022
Seismic wave travel time is an important seismic attribute information and is widely used in various seismic forward and inversion methods, including seismic migration imaging, seismic tomography, seismic wave forward modeling and other core seismic data
Meng Li   +9 more
doaj   +1 more source

Towards the azimuthal characteristics of ionospheric and seismic effects of "Chelyabinsk" meteorite fall according to the data from coherent radar, GPS and seismic networks

open access: yes, 2015
We present the results of a study of the azimuthal characteristics of ionospheric and seismic effects of the meteorite 'Chelyabinsk', based on the data from the network of GPS receivers, coherent decameter radar EKB SuperDARN and network of seismic ...
Bakhtiyarov, V. F.   +8 more
core   +1 more source

Helioseismic analysis of the solar flare-induced sunquake of 2005 January 15 [PDF]

open access: yes, 2006
We report the discovery of one of the most powerful sunquakes detected to date, produced by an X1.2-class solar flare in active region 10720 on 2005 January 15.
Besliu-Ionescu, D.   +4 more
core   +1 more source

Discussion on “Impact of orientation of blast initiation on ground vibrations” [J Rock Mech Geotech Eng 15 (2022) 255–261]

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2023
Recently, Garai et al. (2022) published a paper on the impact of orientation of blast initiation on ground vibrations. However, some of the claims are not supported by the results of the given tests. In Fig. 1 (see Fig.
Tadeusz Chrzan
doaj   +1 more source

Seismic site effects in a deep alluvial basin: numerical analysis by the boundary element method [PDF]

open access: yes, 2002
The main purpose of the paper is the numerical analysis of seismic site effects in Caracas (Venezuela). The analysis is performed considering the boundary element method in the frequency domain.
A.M. Duval   +19 more
core   +5 more sources

Effects of Three-Directional Seismic Wave on Dynamic Response and Failure Behavior of High-Steep Rock Slide

open access: yesApplied Sciences, 2021
The landslide triggered by earthquakes can cause severe infrastructure losses or even fatalities. The high-steep rock slide is the most common type of landslide in the earthquake area.
Ziwei Ge, Hongyan Liu
doaj   +1 more source

Simulation of underground gravity gradients from stochastic seismic fields

open access: yes, 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

Model space dimensionality reduction method of mine seismic wave velocity inversio

open access: yesGong-kuang zidonghua, 2018
For problems of slow convergence speed and large calculation amount existed in non-linear inversion methods of mine seismic wave velocity inversion, a model space dimensionality reduction method of mine seismic wave velocity inversion was proposed based ...
CHEN Qing, LIU Xiaowen
doaj   +1 more source

Subsonic near-surface P-velocity and low S-velocity observations using propagator inversion [PDF]

open access: yes, 2005
Detailed knowledge of near-surface P- and S-wave velocities is important for processing and interpreting multicomponent land seismic data because (1) the entire wavefield passes through and is influenced by the near-surface soil conditions, (2) both ...
Curtis, A., Trampert, J., van Vossen, R.
core   +1 more source

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