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Depth migration with Gaussian wave packets based on Poincare wavelets. / Gorodnitskiy, Evgeny; Perel, Maria; Geng, Yu; Wu, Ru-Shan.
в: Geophysical Journal International, Том 205, № 1, 2016, стр. 314-331.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Depth migration with Gaussian wave packets based on Poincare wavelets
AU - Gorodnitskiy, Evgeny
AU - Perel, Maria
AU - Geng, Yu
AU - Wu, Ru-Shan
PY - 2016
Y1 - 2016
N2 - An approach to depth migration, based on an integral representation of seismic data, that is, wavefields recorded on the boundary, is presented in terms of Poincaré wavelets. Each wavelet is taken as a boundary datum for a high-frequency asymptotic solution of the wave equation. This solution, which we call the quasiphoton or the Gaussian wave packet, decreases in a Gaussian manner away from a point running along a ray that is launched from the surface. The deformation of the propagating packet is taken into account in the migration algorithm. A numerical example of zero-offset migration with synthetic seismograms calculated for the 2-D SEG/EAGE salt model is presented. The result, which uses only 3.9 per cent of the total number of coefficients, is a satisfactory image, with a threshold of 0.75 per cent.
AB - An approach to depth migration, based on an integral representation of seismic data, that is, wavefields recorded on the boundary, is presented in terms of Poincaré wavelets. Each wavelet is taken as a boundary datum for a high-frequency asymptotic solution of the wave equation. This solution, which we call the quasiphoton or the Gaussian wave packet, decreases in a Gaussian manner away from a point running along a ray that is launched from the surface. The deformation of the propagating packet is taken into account in the migration algorithm. A numerical example of zero-offset migration with synthetic seismograms calculated for the 2-D SEG/EAGE salt model is presented. The result, which uses only 3.9 per cent of the total number of coefficients, is a satisfactory image, with a threshold of 0.75 per cent.
KW - Wavelet transform
KW - Theoretical seismology
KW - Wave propagation
U2 - doi: 10.1093/gji/ggv562
DO - doi: 10.1093/gji/ggv562
M3 - Article
VL - 205
SP - 314
EP - 331
JO - Geophysical Journal International
JF - Geophysical Journal International
SN - 0956-540X
IS - 1
ER -
ID: 7555468