Matches in SemOpenAlex for { <https://semopenalex.org/work/W2587218206> ?p ?o ?g. }
- W2587218206 abstract "Seismic images reconstructed by migration from seismic data recorded at the surface represent the earth structure at every location in the subsurface. The data are remapped into the subsurface by using a wave equation and an estimate of the earth velocity. The velocity model is of great importance for obtaining accurate seismic images and for understanding the subsurface reservoir properties and conditions. In this thesis, I focus on structure and velocity estimation from surface seismic data. In order to invert for the velocity model, I seek to improve the synchronization and consistency of the extrapolated surface seismic data inside the subsurface. I use correlation functions to measure the synchronization of seismic waveelds with extended images in the image-domain, and with local correlations in the data-domain. Both correlation methods are conceptually similar and yield, after penalization, the estimate of synchronization. The penalty operator objective is to highlight areas of the correlation gathers that need to be improved through optimization of the model parameters. I incorporate, in both subsurface and data correlations, a penalty operator that takes into account the geometry of the data and its bandwidth. Another important aspect of the subsurface imaging process are the waveelds themselves. Most of the waveelds used in imaging and tomography disregard internal and surface-related multiples. Conventional methods fail to handle multiple scattered waves; hence, the multiples act as noise in the conventional and extended images producing an important bias towards low velocities as an outcome. I compute extended images using waveelds reconstructed with single scattering assumptions and waveelds that correctly handle multiple scattered waves. I show how the extended images with multiples contain similar sensitivity to the background velocity model as the conventional extended images. Additionally, the obtained extended images do not introduce a bias towards low velocities as is the case with conventional extended images." @default.
- W2587218206 created "2017-02-17" @default.
- W2587218206 creator A5020064148 @default.
- W2587218206 creator A5088057595 @default.
- W2587218206 date "2016-01-01" @default.
- W2587218206 modified "2023-09-26" @default.
- W2587218206 title "Extended imaging and tomography under two-way operators" @default.
- W2587218206 cites W1883094171 @default.
- W2587218206 cites W1969583173 @default.
- W2587218206 cites W1970333790 @default.
- W2587218206 cites W1975900931 @default.
- W2587218206 cites W1988383445 @default.
- W2587218206 cites W1997678737 @default.
- W2587218206 cites W2036915281 @default.
- W2587218206 cites W2041378486 @default.
- W2587218206 cites W2044804449 @default.
- W2587218206 cites W2045642993 @default.
- W2587218206 cites W2064242188 @default.
- W2587218206 cites W2064935799 @default.
- W2587218206 cites W2071842065 @default.
- W2587218206 cites W2076211048 @default.
- W2587218206 cites W2076936166 @default.
- W2587218206 cites W2083826621 @default.
- W2587218206 cites W2092225611 @default.
- W2587218206 cites W2100245965 @default.
- W2587218206 cites W2101027232 @default.
- W2587218206 cites W2111149598 @default.
- W2587218206 cites W2113825554 @default.
- W2587218206 cites W2115426733 @default.
- W2587218206 cites W2120704348 @default.
- W2587218206 cites W2121703631 @default.
- W2587218206 cites W2122070727 @default.
- W2587218206 cites W2124157691 @default.
- W2587218206 cites W2125916088 @default.
- W2587218206 cites W2127165009 @default.
- W2587218206 cites W2127168711 @default.
- W2587218206 cites W2142038638 @default.
- W2587218206 cites W2149858318 @default.
- W2587218206 cites W2150240527 @default.
- W2587218206 cites W2150327213 @default.
- W2587218206 cites W2150741226 @default.
- W2587218206 cites W2151619714 @default.
- W2587218206 cites W2152740009 @default.
- W2587218206 cites W2158285489 @default.
- W2587218206 cites W2162302903 @default.
- W2587218206 cites W2165448308 @default.
- W2587218206 cites W2165805685 @default.
- W2587218206 cites W2166525224 @default.
- W2587218206 cites W2168057403 @default.
- W2587218206 cites W2168698092 @default.
- W2587218206 cites W2168917711 @default.
- W2587218206 cites W2171953290 @default.
- W2587218206 cites W2194603512 @default.
- W2587218206 cites W2206381230 @default.
- W2587218206 cites W2265251124 @default.
- W2587218206 cites W2317239262 @default.
- W2587218206 cites W2318192414 @default.
- W2587218206 cites W2321212743 @default.
- W2587218206 cites W2325812426 @default.
- W2587218206 cites W2328832821 @default.
- W2587218206 cites W2335301551 @default.
- W2587218206 cites W2522338163 @default.
- W2587218206 cites W1973440960 @default.
- W2587218206 hasPublicationYear "2016" @default.
- W2587218206 type Work @default.
- W2587218206 sameAs 2587218206 @default.
- W2587218206 citedByCount "0" @default.
- W2587218206 crossrefType "dissertation" @default.
- W2587218206 hasAuthorship W2587218206A5020064148 @default.
- W2587218206 hasAuthorship W2587218206A5088057595 @default.
- W2587218206 hasConcept C104317684 @default.
- W2587218206 hasConcept C11413529 @default.
- W2587218206 hasConcept C120665830 @default.
- W2587218206 hasConcept C121332964 @default.
- W2587218206 hasConcept C122959257 @default.
- W2587218206 hasConcept C127162648 @default.
- W2587218206 hasConcept C127313418 @default.
- W2587218206 hasConcept C158448853 @default.
- W2587218206 hasConcept C163716698 @default.
- W2587218206 hasConcept C165205528 @default.
- W2587218206 hasConcept C17020691 @default.
- W2587218206 hasConcept C185592680 @default.
- W2587218206 hasConcept C192209626 @default.
- W2587218206 hasConcept C2778562939 @default.
- W2587218206 hasConcept C31258907 @default.
- W2587218206 hasConcept C41008148 @default.
- W2587218206 hasConcept C55493867 @default.
- W2587218206 hasConcept C79675319 @default.
- W2587218206 hasConcept C86339819 @default.
- W2587218206 hasConceptScore W2587218206C104317684 @default.
- W2587218206 hasConceptScore W2587218206C11413529 @default.
- W2587218206 hasConceptScore W2587218206C120665830 @default.
- W2587218206 hasConceptScore W2587218206C121332964 @default.
- W2587218206 hasConceptScore W2587218206C122959257 @default.
- W2587218206 hasConceptScore W2587218206C127162648 @default.
- W2587218206 hasConceptScore W2587218206C127313418 @default.
- W2587218206 hasConceptScore W2587218206C158448853 @default.
- W2587218206 hasConceptScore W2587218206C163716698 @default.
- W2587218206 hasConceptScore W2587218206C165205528 @default.
- W2587218206 hasConceptScore W2587218206C17020691 @default.