Acoustic Tomography Of Solar Convective Flows
We present a new method for helioseismic diagnostics of the three-dimensional structure of sound speed, magnetic fields and flow velocities in the convection zone by inversion of acoustic travel-time data. The data are measurements of the time for acoustic waves to travel between points on the solar...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.62.754 2023-05-15T18:22:27+02:00 Acoustic Tomography Of Solar Convective Flows And Structures Kosovichev A. G. Kosovichev T. L. Duvall The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.62.754 http://quake.stanford.edu/~sasha/PAPERS/score_tomography.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.62.754 http://quake.stanford.edu/~sasha/PAPERS/score_tomography.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://quake.stanford.edu/~sasha/PAPERS/score_tomography.pdf text ftciteseerx 2016-01-08T14:57:21Z We present a new method for helioseismic diagnostics of the three-dimensional structure of sound speed, magnetic fields and flow velocities in the convection zone by inversion of acoustic travel-time data. The data are measurements of the time for acoustic waves to travel between points on the solar surface and surrounding annuli obtained from continuous observations at the South Pole in 1991 and from high-resolution observations from the Solar and Heliospheric Observatory (SOHO) in 1996. The travel time of the waves depends primarily on the sound speed perturbations and the velocity of flow along the ray paths. The e#ects of the sound speed perturbations and flows can be separated by measuring the travel time of waves propagating in opposite directions along the same ray paths. Magnetic fields result in anisotropy of the wave speed. A 3D inversion method based on Fermat's Principle and a regularized least-squares technique have been applied to infer the properties of convection in the quiet Sun and in active regions. Text South pole Unknown South Pole |
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We present a new method for helioseismic diagnostics of the three-dimensional structure of sound speed, magnetic fields and flow velocities in the convection zone by inversion of acoustic travel-time data. The data are measurements of the time for acoustic waves to travel between points on the solar surface and surrounding annuli obtained from continuous observations at the South Pole in 1991 and from high-resolution observations from the Solar and Heliospheric Observatory (SOHO) in 1996. The travel time of the waves depends primarily on the sound speed perturbations and the velocity of flow along the ray paths. The e#ects of the sound speed perturbations and flows can be separated by measuring the travel time of waves propagating in opposite directions along the same ray paths. Magnetic fields result in anisotropy of the wave speed. A 3D inversion method based on Fermat's Principle and a regularized least-squares technique have been applied to infer the properties of convection in the quiet Sun and in active regions. |
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The Pennsylvania State University CiteSeerX Archives |
format |
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And Structures Kosovichev A. G. Kosovichev T. L. Duvall |
spellingShingle |
And Structures Kosovichev A. G. Kosovichev T. L. Duvall Acoustic Tomography Of Solar Convective Flows |
author_facet |
And Structures Kosovichev A. G. Kosovichev T. L. Duvall |
author_sort |
And Structures Kosovichev |
title |
Acoustic Tomography Of Solar Convective Flows |
title_short |
Acoustic Tomography Of Solar Convective Flows |
title_full |
Acoustic Tomography Of Solar Convective Flows |
title_fullStr |
Acoustic Tomography Of Solar Convective Flows |
title_full_unstemmed |
Acoustic Tomography Of Solar Convective Flows |
title_sort |
acoustic tomography of solar convective flows |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.62.754 http://quake.stanford.edu/~sasha/PAPERS/score_tomography.pdf |
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South Pole |
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South Pole |
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South pole |
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South pole |
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http://quake.stanford.edu/~sasha/PAPERS/score_tomography.pdf |
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http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.62.754 http://quake.stanford.edu/~sasha/PAPERS/score_tomography.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766201860289462272 |