Open AccessRigorous redatuming
Author(s) -
Mulder W. A.
Publication year - 2005
Publication title -
geophysical journal international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0956-540X
DOI - 10.1111/j.1365-246x.2005.02615.x
Subject(s) - overburden , geology , multiple , inverse theory , inverse problem , seismology , regularization (linguistics) , inverse , mathematics , computer science , mathematical analysis , geometry , geotechnical engineering , artificial intelligence , oceanography , deformation (meteorology) , arithmetic
SUMMARY Redatuming is an operation on seismic data that translates the positions of sources or receivers, or both. Here, redatuming is applied to shift sources and receivers to a specified depth with the aim to completely remove the effects of a complex overburden. To that end, redatuming was formulated as an inverse problem for the full acoustic wave equation, including multiples, without making simplifying assumptions such as downgoing waves or primaries only. The inverse problem is ill posed, but quite acceptable results on synthetic data were obtained with a suitable regularization. One might expect that the redatumed result would also include waves that move up into the overburden and are reflected back to the redatuming depth. It turns out that these waves are automatically removed by the redatuming, without the need for special filters or up–down decomposition.