Perspectives on Geoacoustic Inversion of Ocean Bottom Reflectivity Data
This paper focuses on acoustic reflectivity of the ocean bottom, and describes inversion of reflection data from an experiment designed to study the physical properties and structure of the ocean bottom. The formalism of Bayesian inference is reviewed briefly to establish an understanding of the app...
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| Format: | Article |
| Language: | English |
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MDPI AG
2016-09-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | http://www.mdpi.com/2077-1312/4/3/61 |
| _version_ | 1818921336467095552 |
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| author | N. Ross Chapman |
| author_facet | N. Ross Chapman |
| author_sort | N. Ross Chapman |
| collection | DOAJ |
| description | This paper focuses on acoustic reflectivity of the ocean bottom, and describes inversion of reflection data from an experiment designed to study the physical properties and structure of the ocean bottom. The formalism of Bayesian inference is reviewed briefly to establish an understanding of the approach for inversion that is in widespread use. A Bayesian inversion of ocean bottom reflection coefficient versus angle data to estimate geoacoustic model parameters of young oceanic crust is presented. The data were obtained in an experiment to study the variation of sound speed in crustal basalt with age of the crust at deep water sites in the Pacific Ocean where the sediment deposits overlying the basalt are very thin. The inversion results show that sound speed of both compressional and shear waves is increasing with crustal age over the track of the experiment where age increased from 40 to 70 million years. |
| first_indexed | 2024-12-20T01:36:02Z |
| format | Article |
| id | doaj.art-32472307f5684798a3f637b7951bf290 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-12-20T01:36:02Z |
| publishDate | 2016-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-32472307f5684798a3f637b7951bf2902022-12-21T19:58:00ZengMDPI AGJournal of Marine Science and Engineering2077-13122016-09-01436110.3390/jmse4030061jmse4030061Perspectives on Geoacoustic Inversion of Ocean Bottom Reflectivity DataN. Ross Chapman0School of Earth and Ocean Sciences, University of Victoria, Victoria, BC V8P5A4, CanadaThis paper focuses on acoustic reflectivity of the ocean bottom, and describes inversion of reflection data from an experiment designed to study the physical properties and structure of the ocean bottom. The formalism of Bayesian inference is reviewed briefly to establish an understanding of the approach for inversion that is in widespread use. A Bayesian inversion of ocean bottom reflection coefficient versus angle data to estimate geoacoustic model parameters of young oceanic crust is presented. The data were obtained in an experiment to study the variation of sound speed in crustal basalt with age of the crust at deep water sites in the Pacific Ocean where the sediment deposits overlying the basalt are very thin. The inversion results show that sound speed of both compressional and shear waves is increasing with crustal age over the track of the experiment where age increased from 40 to 70 million years.http://www.mdpi.com/2077-1312/4/3/61geoacoustic modelBayesian inferenceocean bottom reflection coefficientupper oceanic crustdeep water acousticsthin sediment |
| spellingShingle | N. Ross Chapman Perspectives on Geoacoustic Inversion of Ocean Bottom Reflectivity Data Journal of Marine Science and Engineering geoacoustic model Bayesian inference ocean bottom reflection coefficient upper oceanic crust deep water acoustics thin sediment |
| title | Perspectives on Geoacoustic Inversion of Ocean Bottom Reflectivity Data |
| title_full | Perspectives on Geoacoustic Inversion of Ocean Bottom Reflectivity Data |
| title_fullStr | Perspectives on Geoacoustic Inversion of Ocean Bottom Reflectivity Data |
| title_full_unstemmed | Perspectives on Geoacoustic Inversion of Ocean Bottom Reflectivity Data |
| title_short | Perspectives on Geoacoustic Inversion of Ocean Bottom Reflectivity Data |
| title_sort | perspectives on geoacoustic inversion of ocean bottom reflectivity data |
| topic | geoacoustic model Bayesian inference ocean bottom reflection coefficient upper oceanic crust deep water acoustics thin sediment |
| url | http://www.mdpi.com/2077-1312/4/3/61 |
| work_keys_str_mv | AT nrosschapman perspectivesongeoacousticinversionofoceanbottomreflectivitydata |