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Pronunciation varies by accent · noun
The study of the propagation of pressure waves in the Sun..
2012, T. L. Duvall, Jr., S. M. Hanasoge, Subsurface Supergranular Vertical Flows as Measured Using Large Distance Separations in Time-Distance Helioseismology, Solar Physics, reprinted in 2014, Nagi N. Mansour, Alexander G. Kosovichev, Rudolf Komm, Dana Longcope (editors), Solar Dynamics and Magnetism from the Interior to the Atmosphere, Springer, page 71, We find that the large-separation travel times associated with supergranulation cannot be studied using the standard phase-speed filters of time–distance helioseismology.
Helioseismology, like terrestrial seismology, provides information about the interior of the body under study by using observations of slight motions on the surface.
Helioseismology provides unique information about the global dynamics of the Sun and local flows in active regions in the upper convection zone.
Use helioseismology when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Helioseismology means The study of the propagation of pressure waves in the Sun..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
2012, T. L. Duvall, Jr., S. M. Hanasoge, Subsurface Supergranular Vertical Flows as Measured Using Large Distance Separations in Time-Distance Helioseismology, Solar Physics, reprinted in 2014, Nagi N. Mansour, Alexander G. Kosovichev, Rudolf Komm, Dana Longcope (editors), Solar Dynamics and Magnetism from the Interior to the Atmosphere, Springer, page 71, We find that the large-separation travel times associated with supergranulation cannot be studied using the standard phase-speed filters of time–distance helioseismology.
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