Matches in SemOpenAlex for { <https://semopenalex.org/work/W1888565524> ?p ?o ?g. }
Showing items 1 to 99 of
99
with 100 items per page.
- W1888565524 endingPage "WD72" @default.
- W1888565524 startingPage "WD59" @default.
- W1888565524 abstract "We have developed a method to decompose seismic records into atomic events, each defined by a smooth phase function and a smooth amplitude function. This decomposition is intrinsically nonlinear and calls for a nonconvex least-squares optimization formulation, along the lines of full-waveform inversion. To overcome the lack of convexity, we have developed an iterative refinement-expansion scheme to initialize and track the phase and amplitude for each atomic event. For short, we called the method phase tracking. The initialization is carried out by applying multiple signal classification to a few seed traces in which events can be separated and identified by their arrival times and amplitudes. We then construct the initial solution at the seed traces using linear phase functions from the arrival times and constant amplitude functions, assuming the medium is mostly dispersion free. We refine this initial solution to account for dispersion and imperfect knowledge of the wavelet at the seed traces by fitting the observed data using a gradient descent method. The resulting phase and amplitude functions are then carefully expanded across the traces in an adequately smooth way to match the whole data record. We have evaluated the proposed method on two synthetic records and a field record. Because the parametrization of the seismic events is physically meaningful, it also enables a simple form of bandwidth extension of the observed shot record to unobserved low and high frequencies. We tested this procedure on the same shot records. Bandwidth extension is in principle helpful to initialize full-waveform inversion with frequency sweeps and enhanced its resolution." @default.
- W1888565524 created "2016-06-24" @default.
- W1888565524 creator A5007855671 @default.
- W1888565524 creator A5035951153 @default.
- W1888565524 date "2015-11-01" @default.
- W1888565524 modified "2023-10-02" @default.
- W1888565524 title "Phase and amplitude tracking for seismic event separation" @default.
- W1888565524 cites W2017850976 @default.
- W1888565524 cites W2020205028 @default.
- W1888565524 cites W2023221327 @default.
- W1888565524 cites W2065656021 @default.
- W1888565524 cites W2069692647 @default.
- W1888565524 cites W2086151478 @default.
- W1888565524 cites W2097893949 @default.
- W1888565524 cites W2113638573 @default.
- W1888565524 cites W2116258620 @default.
- W1888565524 cites W2134463762 @default.
- W1888565524 cites W2139663179 @default.
- W1888565524 cites W2140653418 @default.
- W1888565524 cites W2141921855 @default.
- W1888565524 cites W2144542233 @default.
- W1888565524 cites W2155434899 @default.
- W1888565524 cites W2161085948 @default.
- W1888565524 cites W620727562 @default.
- W1888565524 doi "https://doi.org/10.1190/geo2015-0075.1" @default.
- W1888565524 hasPublicationYear "2015" @default.
- W1888565524 type Work @default.
- W1888565524 sameAs 1888565524 @default.
- W1888565524 citedByCount "26" @default.
- W1888565524 countsByYear W18885655242016 @default.
- W1888565524 countsByYear W18885655242017 @default.
- W1888565524 countsByYear W18885655242018 @default.
- W1888565524 countsByYear W18885655242019 @default.
- W1888565524 countsByYear W18885655242020 @default.
- W1888565524 countsByYear W18885655242021 @default.
- W1888565524 countsByYear W18885655242022 @default.
- W1888565524 countsByYear W18885655242023 @default.
- W1888565524 crossrefType "journal-article" @default.
- W1888565524 hasAuthorship W1888565524A5007855671 @default.
- W1888565524 hasAuthorship W1888565524A5035951153 @default.
- W1888565524 hasBestOaLocation W18885655242 @default.
- W1888565524 hasConcept C11413529 @default.
- W1888565524 hasConcept C114466953 @default.
- W1888565524 hasConcept C120665830 @default.
- W1888565524 hasConcept C121332964 @default.
- W1888565524 hasConcept C127313418 @default.
- W1888565524 hasConcept C153258448 @default.
- W1888565524 hasConcept C154945302 @default.
- W1888565524 hasConcept C165205528 @default.
- W1888565524 hasConcept C180205008 @default.
- W1888565524 hasConcept C1893757 @default.
- W1888565524 hasConcept C197424946 @default.
- W1888565524 hasConcept C199360897 @default.
- W1888565524 hasConcept C33923547 @default.
- W1888565524 hasConcept C41008148 @default.
- W1888565524 hasConcept C50644808 @default.
- W1888565524 hasConcept C554190296 @default.
- W1888565524 hasConcept C76155785 @default.
- W1888565524 hasConcept C77928131 @default.
- W1888565524 hasConceptScore W1888565524C11413529 @default.
- W1888565524 hasConceptScore W1888565524C114466953 @default.
- W1888565524 hasConceptScore W1888565524C120665830 @default.
- W1888565524 hasConceptScore W1888565524C121332964 @default.
- W1888565524 hasConceptScore W1888565524C127313418 @default.
- W1888565524 hasConceptScore W1888565524C153258448 @default.
- W1888565524 hasConceptScore W1888565524C154945302 @default.
- W1888565524 hasConceptScore W1888565524C165205528 @default.
- W1888565524 hasConceptScore W1888565524C180205008 @default.
- W1888565524 hasConceptScore W1888565524C1893757 @default.
- W1888565524 hasConceptScore W1888565524C197424946 @default.
- W1888565524 hasConceptScore W1888565524C199360897 @default.
- W1888565524 hasConceptScore W1888565524C33923547 @default.
- W1888565524 hasConceptScore W1888565524C41008148 @default.
- W1888565524 hasConceptScore W1888565524C50644808 @default.
- W1888565524 hasConceptScore W1888565524C554190296 @default.
- W1888565524 hasConceptScore W1888565524C76155785 @default.
- W1888565524 hasConceptScore W1888565524C77928131 @default.
- W1888565524 hasIssue "6" @default.
- W1888565524 hasLocation W18885655241 @default.
- W1888565524 hasLocation W18885655242 @default.
- W1888565524 hasOpenAccess W1888565524 @default.
- W1888565524 hasPrimaryLocation W18885655241 @default.
- W1888565524 hasRelatedWork W1996945984 @default.
- W1888565524 hasRelatedWork W2024093099 @default.
- W1888565524 hasRelatedWork W2085612832 @default.
- W1888565524 hasRelatedWork W2088119150 @default.
- W1888565524 hasRelatedWork W2176409448 @default.
- W1888565524 hasRelatedWork W2374442885 @default.
- W1888565524 hasRelatedWork W2374512474 @default.
- W1888565524 hasRelatedWork W2425229278 @default.
- W1888565524 hasRelatedWork W2613371736 @default.
- W1888565524 hasRelatedWork W3208837601 @default.
- W1888565524 hasVolume "80" @default.
- W1888565524 isParatext "false" @default.
- W1888565524 isRetracted "false" @default.
- W1888565524 magId "1888565524" @default.
- W1888565524 workType "article" @default.