| DOI: | 10.1002/2014GL062805
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| 论文题名: | Elliptical-anisotropic eikonal phase velocity tomography |
| 作者: | Deridder S.A.L.; Biondi B.L.; Nichols D.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8986
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| EISSN: | 1944-8717
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| 出版年: | 2015
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| 卷: | 42, 期:3 | | 起始页码: | 758
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| 结束页码: | 764
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| 语种: | 英语
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| 英文关键词: | anisotropy
; eikonal
; Ekofisk
; seismic interferometry
; seismic noise
; tomography
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| Scopus关键词: | Phase velocity
; Seismology
; Tomography
; Velocity
; Circular pattern
; Eikonal
; Ekofisk
; Overburden stress
; Seismic interferometries
; Seismic noise
; Surface gradients
; Velocity tomography
; Anisotropy
; azimuth
; phase velocity
; seismic anisotropy
; seismic noise
; seismic source
; seismic tomography
; seismic velocity
; travel time
; wave equation
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| 英文摘要: | We formulated an anisotropic eikonal tomography approach for phase velocities based on a two-dimensional elliptical-anisotropic wave equation. We can fit the parameters of the ellipse directly from measured first-order traveltime surface gradients and constrain these parameters to vary smoothly over space. The method is applied to Scholte waves in virtual seismic sources from stations in the Life of Field Seismic Ocean Bottom Cable array installed over the Ekofisk field. The fast directions of the azimuthally anisotropic Scholte wave velocities form a large circular pattern over the Ekofisk field. This pattern dominates the Scholte wave phase velocities at Ekofisk between 0.7and1.1Hz. It results from the overburden stress state and from seafloor subsidence induced by decades of hydrocarbon extraction. © 2015 The Authors. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84925164925&doi=10.1002%2f2014GL062805&partnerID=40&md5=5be8725ad45388f70de7534f15974698
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/8602
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Department of Geophysics, Stanford University, Stanford, CA, United States
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| Recommended Citation: | |
Deridder S.A.L.,Biondi B.L.,Nichols D.. Elliptical-anisotropic eikonal phase velocity tomography[J]. Geophysical Research Letters,2015-01-01,42(3).
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