Elastic-wave reverse-time migration based on decoupled elastic-wave equations and inner-product imaging condition
نویسندگان
چکیده
منابع مشابه
Converted-waves imaging condition for elastic reverse-time migration
Polarity changes in converted-wave images constructed by elastic reverse-time migration causes destructive interference after stacking over the experiments of a seismic survey. We derive a simple imaging condition for converted waves imaging designed to correct the image polarity and reveal the conversion strength from one wave mode to another. Our imaging condition exploits pure Pand S-modes o...
متن کاملScalar imaging condition for elastic reverse time migration
Polarity changes in converted-wave images constructed by elastic reverse time migration cause destructive interference after stacking over the experiments of a seismic survey. This polarity reversal is due to PS and SP reflectivities reversing sign at certain incidence angles, e.g., at normal incidence in isotropic media. Many of the available polarity correction methods are complex and require...
متن کاملElastic Prestack , Reverse - Time Migration
Elastic prestack, reverse-time depth migration is applied to both synthetic data and four-component eld data from the Valhall area. Reverse-time extrapolation of the recorded multi-component data is by 2-D elastic nite di erence solution to the full wave equation. An eikonal solver is used to compute the acoustic traveltime from the source to the image points. By using horizontal inline and ver...
متن کاملIsotropic angle - domain elastic reverse - time migration
Multicomponent data are not usually processed with specifically designed procedures, but with procedures analogous to the ones used for single-component data. In isotropic media, the vertical and horizontal components of the data are commonly taken as proxies for the Pand S-wave modes which are imaged independently with acoustic wave equations. This procedure works only if the vertical and hori...
متن کاملsotropic angle - domain elastic reverse - time migration
Multicomponent data usually are not processed with specifically designed procedures but with procedures analogous to those used for single-component data. In isotropic media, the vertical and horizontal components of the data commonly are taken as proxies for the Pand S-wave modes, which are imaged independently with the acoustic wave equations. This procedure works only if the vertical and hor...
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: Journal of Geophysics and Engineering
سال: 2016
ISSN: 1742-2132,1742-2140
DOI: 10.1088/1742-2132/13/6/953