Study on the limitations of travel-time inversion applied to sub-basalt imaging.
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| Title: | Study on the limitations of travel-time inversion applied to sub-basalt imaging. |
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| Authors: | Flecha, I.1, Carbonell, R.1 ramon.carbonell@csic.es, Hobbs, R. W.2 |
| Source: | Solid Earth. 2013, Vol. 4 Issue 2, p543-554. 12p. |
| Subjects: | Seismic traveltime inversion, Basalt analysis, Imaging systems in seismology, Seismic reflection method, Petroleum industry |
| Geographic Terms: | Shetland (Scotland), Faroe Islands |
| Abstract: | The difficulties of seismic imaging beneath high velocity structures are widely recognised. In this setting, theoretical analysis of synthetic wide-angle seismic reflection data indicates that velocity models are not well constrained. A two-dimensional velocity model was built to simulate a simplified structural geometry given by a basaltic wedge placed within a sedimentary sequence. This model reproduces the geological setting in areas of special interest for the oil industry as the Faroe-Shetland Basin. A wide-angle synthetic dataset was calculated on this model using an elastic finite difference scheme. This dataset provided travel times for tomographic inversions. Results show that the original model can not be completely resolved without considering additional information. The resolution of nonlinear inversions lacks a functional mathematical relationship, therefore, statistical approaches are required. Stochastic tests based on Metropolis techniques support the need of additional information to properly resolve sub-basalt structures, [ABSTRACT FROM AUTHOR] |
| Copyright of Solid Earth is the property of Copernicus Gesellschaft mbH and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 93652054 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Study on the limitations of travel-time inversion applied to sub-basalt imaging. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Flecha%2C+I%2E%22">Flecha, I.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Carbonell%2C+R%2E%22">Carbonell, R.</searchLink><relatesTo>1</relatesTo><i> ramon.carbonell@csic.es</i><br /><searchLink fieldCode="AR" term="%22Hobbs%2C+R%2E+W%2E%22">Hobbs, R. W.</searchLink><relatesTo>2</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Solid+Earth%22">Solid Earth</searchLink>. 2013, Vol. 4 Issue 2, p543-554. 12p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Seismic+traveltime+inversion%22">Seismic traveltime inversion</searchLink><br /><searchLink fieldCode="DE" term="%22Basalt+analysis%22">Basalt analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Imaging+systems+in+seismology%22">Imaging systems in seismology</searchLink><br /><searchLink fieldCode="DE" term="%22Seismic+reflection+method%22">Seismic reflection method</searchLink><br /><searchLink fieldCode="DE" term="%22Petroleum+industry%22">Petroleum industry</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Shetland+%28Scotland%29%22">Shetland (Scotland)</searchLink><br /><searchLink fieldCode="DE" term="%22Faroe+Islands%22">Faroe Islands</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The difficulties of seismic imaging beneath high velocity structures are widely recognised. In this setting, theoretical analysis of synthetic wide-angle seismic reflection data indicates that velocity models are not well constrained. A two-dimensional velocity model was built to simulate a simplified structural geometry given by a basaltic wedge placed within a sedimentary sequence. This model reproduces the geological setting in areas of special interest for the oil industry as the Faroe-Shetland Basin. A wide-angle synthetic dataset was calculated on this model using an elastic finite difference scheme. This dataset provided travel times for tomographic inversions. Results show that the original model can not be completely resolved without considering additional information. The resolution of nonlinear inversions lacks a functional mathematical relationship, therefore, statistical approaches are required. Stochastic tests based on Metropolis techniques support the need of additional information to properly resolve sub-basalt structures, [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Solid Earth is the property of Copernicus Gesellschaft mbH and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.5194/se-4-543-2013 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 12 StartPage: 543 Subjects: – SubjectFull: Seismic traveltime inversion Type: general – SubjectFull: Basalt analysis Type: general – SubjectFull: Imaging systems in seismology Type: general – SubjectFull: Seismic reflection method Type: general – SubjectFull: Petroleum industry Type: general – SubjectFull: Shetland (Scotland) Type: general – SubjectFull: Faroe Islands Type: general Titles: – TitleFull: Study on the limitations of travel-time inversion applied to sub-basalt imaging. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Flecha, I. – PersonEntity: Name: NameFull: Carbonell, R. – PersonEntity: Name: NameFull: Hobbs, R. W. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 06 Text: 2013 Type: published Y: 2013 Identifiers: – Type: issn-print Value: 18699510 Numbering: – Type: volume Value: 4 – Type: issue Value: 2 Titles: – TitleFull: Solid Earth Type: main |
| ResultId | 1 |
