Time-lapse travel time change of multiply scattered acoustic waves
نویسندگان
چکیده
منابع مشابه
Time-lapse travel time change of multiply scattered acoustic waves
Existing techniques in correlation spectroscopy, such as coda wave interferometry and diffusing acoustic wave spectroscopy, determine the average motion of scatterers or change in the propagation velocity from the temporal change of multiply scattered sound. However, neither of them gives an indication of the spatial extent of the change in the medium. This study is an extension of the techniqu...
متن کاملTime-lapse Monitoring with Multiply Scattered Waves
Previous formulations of coda wave interferometry make it possible to assess the average change of the medium, but they do not allow for the spatial localization of this change (Snieder et al., 2002; Snieder, 2002). We present an approach for localizing temporal changes in the medium using strongly scattered waves, and test it with numerical models for 2D scalar waves. Using an integral represe...
متن کاملReverse-time-migration of multiply scattered seismic waves
Multiply scattered waves, including internal multiples, are rarely considered as signal when imaging with seismic waves. Reverse-time-migration techniques accurately handle the propagation of such complex scattered waves, but most of these techniques paradoxically do not fully utilize the illumination and energy of multiply scattered waves because these methods rely on the single-scattering ass...
متن کاملEnhanced angular resolution from multiply scattered waves
Multiply scattered waves are often neglected in imaging methods, largely because of the inability of standard algorithms to deal with the associated nonlinear models. This paper shows that by incorporating a known environment into the background model, we not only retain the benefits of imaging techniques based on linear models, but also obtain different views of the target scatterer. The net r...
متن کاملTime dependence of multiply scattered diffuse ultrasound in polycrystalline media
Time dependence of multiply scattered diffuse ultrasound in polycrystalline media" (1995). Time domain results are presented for the multiply scattered longitudinal intensity backscattered from a polycrystalline medium. The results are solutions to the ultrasonic radiative transfer equation (URTE), the derivation of which is based upon radiative transfer theory. Unlike steady-state solutions ob...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 2005
ISSN: 0001-4966
DOI: 10.1121/1.2000827