3D Sunspot

The subsurface structure (sound speed) below a sunspot as derived from Doppler measurements by MDI. Using the technique of time-distance helioseismology, three planes are shown. The surface intensity shows the sunspot with the dark central umbra surrounded by the somewhat brighter, filamentary penumbra. The second plane cuts from the surface to 24000 km deep showing areas of faster sound speed as reddish colors and slower sound speed as bluish colors. The third plane (bottom) is a horizontal cut at a depth of 22000 km showing the horizontal variation of sound speed.





To read more about NASA Celebrating 400 Years of Sunspot Observations go here: www.nasa.gov/mission_pages/sunearth/news/400yrs-spots.html


NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.


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  • Ken_Lord 4y

    The sunspot is 'plane' to see! hehe
  • John Pritchard 4y

  • Yaroslav Bondarenko 3y

    More incredible! 4DSunSEIS tomography model (
    4D SunSEIS Tomography Model of an Internal 4D SpaceTime structure of the Sun by Jaroslove Bondarenko
    ) of an internal 4D space-time structure of the Sun it is created by the 3D GeoSEIS transformations of the satellite image 20020227eit171.
    Uniqueness of 3D GeoSEIS technology is determined by algorithms that transforms digital images of physical fields into volumetric space-time models which reflects not only an internal structure, but also evolution of field`s structures.
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Uploaded on March 8, 2011
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