| DOI: | 10.1002/2015GL067421
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| 论文题名: | Smooth 2-D ocean sound speed from Laplace and Laplace-Fourier domain inversion of seismic oceanography data |
| 作者: | Blacic T.M.; Jun H.; Rosado H.; Shin C.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9422
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| EISSN: | 1944-9153
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| 出版年: | 2016
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| 卷: | 43, 期:3 | | 起始页码: | 1211
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| 结束页码: | 1218
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| 语种: | 英语
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| 英文关键词: | full waveform inversion
; Laplace domain inversion
; seismic oceanography
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| Scopus关键词: | Laplace transforms
; Oceanography
; Seismic response
; Seismic waves
; Ultrasonic velocity measurement
; Waveform analysis
; Computational costs
; Full-waveform inversion
; Hydrographic data
; Laplace domains
; Low-frequency components
; Prior information
; Synthetic datasets
; Temperature changes
; Seismology
; information
; Laplace transform
; oceanography
; seismic data
; sound velocity
; temperature effect
; temperature gradient
; two-dimensional modeling
; wave field
; waveform analysis
; wavelength
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| 英文摘要: | In seismic oceanography, processed images highlight small temperature changes, but inversion is needed to obtain absolute temperatures. Local search-based full waveform inversion has a lower computational cost than global search but requires accurate starting models. Unfortunately, most marine seismic data have little associated hydrographic data and the band-limited nature of seismic data makes extracting the long wavelength sound speed trend directly from seismic data inherently challenging. Laplace and Laplace-Fourier domain inversion (LDI) can use rudimentary starting models without prior information about the medium. Data are transformed to the Laplace domain, and a smooth sound speed model is extracted by examining the zero and low frequency components of the damped wavefield. We applied LDI to five synthetic data sets based on oceanographic features and recovered smoothed versions of our synthetic models, showing the viability of LDI for creating starting models suitable for more detailed inversions. © 2016. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84961286515&doi=10.1002%2f2015GL067421&partnerID=40&md5=b8e4076800c21bd3b54791d7224d870a
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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/10385
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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: | Earth and Environmental Studies Department, Montclair State University, Montclair, NJ, United States
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| Recommended Citation: | |
Blacic T.M.,Jun H.,Rosado H.,et al. Smooth 2-D ocean sound speed from Laplace and Laplace-Fourier domain inversion of seismic oceanography data[J]. Geophysical Research Letters,2016-01-01,43(3).
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