مؤتمر
Low-rank representation of extended image volumes: Applications to imaging and velocity continuation
| العنوان: | Low-rank representation of extended image volumes: Applications to imaging and velocity continuation |
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| المؤلفون: | Kumar, R. (Rajiv), Graff-Kray, M. (Marie), Leeuwen, T. (Tristan) van, Herrmann, F.J. (Felix) |
| سنة النشر: | 2018 |
| المجموعة: | CWI's Institutional Repository (Centrum voor Wiskunde en Informatica) |
| مصطلحات موضوعية: | Finite difference, Reverse time migration, Velocity analysis, Wave equation, Common offset |
| الوصف: | In this paper, we present a cost-effective low-rank factorized form of computing the full subsurface extended image volumes without explicitly calculating the receiver wavefields. The propose approach is computationally feasible, which exploits the low-rank structure of full subsurface extended image volumes organized as a matrix, thus avoiding the customary loop over sources. Using carefully selected stylized examples, we show how conventional migration images can be extracted from the low-rank factorized form. We also present a velocity continuation procedure that uses the same low-rank form and allows us to map the extended image for one velocity model to another velocity model without recomputing all the source wavefields. |
| نوع الوثيقة: | conference object |
| اللغة: | English |
| العلاقة: | https://ir.cwi.nl/pub/30665Test |
| DOI: | 10.1190/segam2018-2998404.1 |
| الإتاحة: | https://doi.org/10.1190/segam2018-2998404.1Test https://ir.cwi.nl/pub/30665Test |
| رقم الانضمام: | edsbas.56735C53 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1190/segam2018-2998404.1 |
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