Ambient acoustic imaging in helioseismology

Hsiang Kuang Chang; Dean Yi Chou; Barry LaBonte; M. T. Sun; T. M. Mu; H. R. Chen; S. Loudagh; S. J. Yeh; A. Jimenez; M. C. Rabello-Soares; G. Ai; G. P. Wang; H. Zirin; W. Marquette; S. Ehgamberdiev; S. Khalikov

doi:10.1038/39822

Ambient acoustic imaging in helioseismology

Hsiang Kuang Chang^*, Dean Yi Chou, Barry LaBonte, M. T. Sun, T. M. Mu, H. R. Chen, S. Loudagh, S. J. Yeh, A. Jimenez, M. C. Rabello-Soares, G. Ai, G. P. Wang, H. Zirin, W. Marquette, S. Ehgamberdiev, S. Khalikov

^*Corresponding author for this work

Department of Mechanical Engineering

Research output: Contribution to journal › Journal Article › peer-review

52 Scopus citations

Abstract

The increasing availability of high spatial resolution data of velocity and intensity variations on the Sun has stimulated the development of helioseismological techniques that probe the solar interior in localized regions. The techniques developed so far have yielded information on physical quantities (such as the flow velocity and magnetic field) below the surface, but are still far from providing a detailed picture of local subsurface inhomogeneities. Here we report the development and application of a new method for constructing three-dimensional solar images, utilizing acoustic noise (or stochastic P-mode oscillations) in the Sun. We treat a region of the solar surface as a phased array of acoustic sensors, which acts as a computational 'lens'; acoustic waves 'scattered' by local inhomogeneities, such as sunspots, are collected and summed in phase, based on the knowledge of how (on average) they travel within the Sun. In this way, we are able to construct a three-dimensional image of a region of the solar interior.

Original language	English
Pages (from-to)	825-827
Number of pages	3
Journal	Nature
Volume	389
Issue number	6653
DOIs	https://doi.org/10.1038/39822
State	Published - 1997

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title = "Ambient acoustic imaging in helioseismology",

abstract = "The increasing availability of high spatial resolution data of velocity and intensity variations on the Sun has stimulated the development of helioseismological techniques that probe the solar interior in localized regions. The techniques developed so far have yielded information on physical quantities (such as the flow velocity and magnetic field) below the surface, but are still far from providing a detailed picture of local subsurface inhomogeneities. Here we report the development and application of a new method for constructing three-dimensional solar images, utilizing acoustic noise (or stochastic P-mode oscillations) in the Sun. We treat a region of the solar surface as a phased array of acoustic sensors, which acts as a computational 'lens'; acoustic waves 'scattered' by local inhomogeneities, such as sunspots, are collected and summed in phase, based on the knowledge of how (on average) they travel within the Sun. In this way, we are able to construct a three-dimensional image of a region of the solar interior.",

author = "Chang, {Hsiang Kuang} and Chou, {Dean Yi} and Barry LaBonte and Sun, {M. T.} and Mu, {T. M.} and Chen, {H. R.} and S. Loudagh and Yeh, {S. J.} and A. Jimenez and Rabello-Soares, {M. C.} and G. Ai and Wang, {G. P.} and H. Zirin and W. Marquette and S. Ehgamberdiev and S. Khalikov",

year = "1997",

doi = "10.1038/39822",

language = "英语",

volume = "389",

pages = "825--827",

journal = "Nature",

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T1 - Ambient acoustic imaging in helioseismology

AU - Chang, Hsiang Kuang

AU - Chou, Dean Yi

AU - LaBonte, Barry

AU - Sun, M. T.

AU - Mu, T. M.

AU - Chen, H. R.

AU - Loudagh, S.

AU - Yeh, S. J.

AU - Jimenez, A.

AU - Rabello-Soares, M. C.

AU - Ai, G.

AU - Wang, G. P.

AU - Zirin, H.

AU - Marquette, W.

AU - Ehgamberdiev, S.

AU - Khalikov, S.

PY - 1997

Y1 - 1997

N2 - The increasing availability of high spatial resolution data of velocity and intensity variations on the Sun has stimulated the development of helioseismological techniques that probe the solar interior in localized regions. The techniques developed so far have yielded information on physical quantities (such as the flow velocity and magnetic field) below the surface, but are still far from providing a detailed picture of local subsurface inhomogeneities. Here we report the development and application of a new method for constructing three-dimensional solar images, utilizing acoustic noise (or stochastic P-mode oscillations) in the Sun. We treat a region of the solar surface as a phased array of acoustic sensors, which acts as a computational 'lens'; acoustic waves 'scattered' by local inhomogeneities, such as sunspots, are collected and summed in phase, based on the knowledge of how (on average) they travel within the Sun. In this way, we are able to construct a three-dimensional image of a region of the solar interior.

AB - The increasing availability of high spatial resolution data of velocity and intensity variations on the Sun has stimulated the development of helioseismological techniques that probe the solar interior in localized regions. The techniques developed so far have yielded information on physical quantities (such as the flow velocity and magnetic field) below the surface, but are still far from providing a detailed picture of local subsurface inhomogeneities. Here we report the development and application of a new method for constructing three-dimensional solar images, utilizing acoustic noise (or stochastic P-mode oscillations) in the Sun. We treat a region of the solar surface as a phased array of acoustic sensors, which acts as a computational 'lens'; acoustic waves 'scattered' by local inhomogeneities, such as sunspots, are collected and summed in phase, based on the knowledge of how (on average) they travel within the Sun. In this way, we are able to construct a three-dimensional image of a region of the solar interior.

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DO - 10.1038/39822

M3 - 文章

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SN - 0028-0836

VL - 389

SP - 825

EP - 827

JO - Nature

JF - Nature

IS - 6653

ER -

Ambient acoustic imaging in helioseismology

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