Results 141 to 150 of about 227 (164)
Some of the next articles are maybe not open access.
Coda wave interferometry, a new method for monitoring change
The Journal of the Acoustical Society of America, 2002Multiply scattered waves are extremely sensitive to small changes of the medium through which these waves have propagated. Coda Wave Interferometry [Science 295, 2253–2255 (2002)] is a new technique that utilizes multiply scattered waves in the time domain to monitor small changes in media.
Roel Snieder +3 more
openaire +1 more source
Time‐lapse monitoring of rock properties with coda wave interferometry
Journal of Geophysical Research: Solid Earth, 2006The coda of seismic waves consists of that part of the signal after the directly arriving phases. In a finite medium, or in one that is strongly heterogeneous, the coda is dominated by waves which have repeatedly sampled the medium. Small changes in a medium which may have no detectable influence on the first arrivals are amplified by this repeated ...
Alexandre Grêt +2 more
openaire +1 more source
Monitoring medium changes in an intraplate setting with coda wave interferometry
13th International Congress of the Brazilian Geophysical Society & EXPOGEF, Rio de Janeiro, Brazil, 26–29 August 2013, 2013This paper presents the application of coda wave interferometry (Snieder et al., 2002) in the case of an intraplate seismic sequence of events located in Sao Caetano, Pernambuco state, North-East of Brazil in which we report velocity changes related to a 3.7 mR event in the area. Firstly, we use synthetic data for a homogeneous and isotropic medium. In
Virginie D'Hour +4 more
openaire +1 more source
Coda wave interferometry and relative source location
2019A wide range of applications requires relative locations of sources of energy to be known accurately. Most conventional location methods are either subject to errors that depend strongly on inaccuracy in the model of propagation velocity used, or demand a well-distributed network of surrounding seismic stations in order to produce reliable results.
openaire +1 more source
Nonlinear coda wave interferometry: Characterizing damage in complex solids
The Journal of the Acoustical Society of America, 2017In this talk, we report results on the nonlinear interactions of ultrasonic coda waves, in reverberating or multiple scattering mesoscopic solid media. Using the method of coda wave interferometry (CWI), we analyze the effect of mixing a coda wave with an additional lower frequency pump wave.
openaire +1 more source