Elastic least-squares reverse time migration
نویسندگان
چکیده
منابع مشابه
Elastic least-squares reverse time migration
Least-squares migration (LSM) can produce images with improved resolution and reduced migration artifacts. We propose a method for elastic least-squares reverse time migration (LSRTM) based on different types of imaging condition. Perturbation imaging condition leads to images for squared P and S velocity models; the displacement imaging condition crosscorrelates components of the source and re...
متن کاملElastic least-squares reverse time migration using the energy norm
We derive linearized modeling and migration operators based on the energy norm for elastic wavefields in arbitrary anisotropic media. We use these operators to perform anisotropic least-squares reverse time migration (LSRTM) and generate a scalar image that represents subsurface reflectivity without costly decomposition of wave modes. Imaging operators based on the energy norm have the advantag...
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: GEOPHYSICS
سال: 2017
ISSN: 0016-8033,1942-2156
DOI: 10.1190/geo2016-0254.1