Results 21 to 30 of about 3,196,310 (243)

A near-surface seismic scattered wave separation method

open access: yesPetroleum Exploration and Development, 2014
Considering that near-surface scattered waves could not be suppressed by conventional denoise method, this paper analyzes the characteristics of scattered waves and achieves the near-surface scattered wave separation by the seismic interferometry theory.
Jixiang XU, B F McLean, Xuejuan SONG
doaj   +1 more source

Seismic waves increase permeability [PDF]

open access: yesNature, 2006
Earthquakes have been observed to affect hydrological systems in a variety of ways--water well levels can change dramatically, streams can become fuller and spring discharges can increase at the time of earthquakes. Distant earthquakes may even increase the permeability in faults. Most of these hydrological observations can be explained by some form of
Elkhoury, Jean E.   +2 more
openaire   +3 more sources

Numerical analysis of seismic wave amplification in Nice (France) and comparisons with experiments [PDF]

open access: yes, 2000
The analysis of site effects is very important since the amplification of seismic motion in some specific areas can be very strong. In this paper, the site considered is located in the centre of Nice on the French Riviera.
A.-M Duval   +28 more
core   +5 more sources

Wiener filtering with a seismic underground array at the Sanford Underground Research Facility [PDF]

open access: yes, 2014
A seismic array has been deployed at the Sanford Underground Research Facility in the former Homestake mine, South Dakota, to study the underground seismic environment.
Christensen, Nelson   +6 more
core   +2 more sources

Modelling strong seismic ground motion: three-dimensional loading path versus wavefield polarization [PDF]

open access: yes, 2012
Seismic waves due to strong earthquakes propagating in surficial soil layers may both reduce soil stiffness and increase the energy dissipation into the soil.
D'Avila, Maria Paola Santisi   +2 more
core   +6 more sources

Tube waves, seismic waves and effective sources [PDF]

open access: yesWave Motion, 1993
The radiation of waves from a monopole source in a fluid-filled borehole into an elastic medium is considered. A simple asymptotic analysis, based on the smallness of the ratio of the borehole radius to the wavelength, reveals the interaction between tube waves and seismic waves.
Burridge, Robert   +2 more
openaire   +2 more sources

Determination of the structure of the earth's crust by changing the velocity of seismic waves from the earthquake data

open access: yesВестник Дагестанского государственного технического университета: Технические науки, 2021
Objective. A study of the structure of the earth's crust by determining the velocities of seismic waves from previously broken sections of the earth's crust.Methods. Two mathematical methods are proposed for determining the seismic wave velocities.
B. I. Shakhtarin   +3 more
doaj   +1 more source

Characterization of the seismic environment at the Sanford Underground Laboratory, South Dakota [PDF]

open access: yes, 2010
An array of seismometers is being developed at the Sanford Underground Laboratory, the former Homestake mine, in South Dakota to study the properties of underground seismic fields and Newtonian noise, and to investigate the possible advantages of ...
  +45 more
core   +4 more sources

Energy Characteristics of Seismic Waves on Cardox Blasting Tube

open access: yesGeofluids, 2021
In order to study the energy characteristics of seismic waves on the liquid CO2 blasting system, the blasting seismic wave signal of liquid CO2 blasting was obtained by on-site microseismic monitoring tests.
Xuejiao Cui   +4 more
doaj   +1 more source

Amplitude-Versus-Angle (AVA) Inversion for Pre-Stack Seismic Data with L0-Norm-Gradient Regularization

open access: yesMathematics, 2023
Amplitude-versus-angle (AVA) inversion for pre-stack seismic data is a key technology in oil and gas reservoir prediction. Conventional AVA inversion contains two main stages.
Ronghuo Dai, Jun Yang
doaj   +1 more source

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