Supergranulation
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Image:Sun, Earth size comparison labeled.jpg
Supergranulation is a particular pattern on the Sun surface. It was discovered in the 1950s by A.B.Hart on Doppler velocity measurements showing horizontal flows on the photosphere (flow speed about 300 to 500 m/s).
Later works (1960's) by Leighton, Noyes and Simon established a typical size of about 30000 km for supergranules with a lifetime of about 24 hours. Supergranulation has long been interpreted as a specific convection scale, however its origin is not exactly known nowadays.
[edit] External links
- SOHO/MDI Dopplergram showing supergranular speed pattern
- NASA: The Sun Does The Wave
- Information at Nature.com
| Image:Sun picture.png |
| Structure: Solar Core - Radiation Zone - Convection Zone |
| Atmosphere - Photosphere - Chromosphere - Transition region - Corona |
| Extended Structure: Termination Shock - Heliosphere - Heliopause - Heliosheath - Bow Shock |
| Solar Phenomena: Sunspots - Faculae - Granules - Supergranulation - Solar Wind - Spicules |
| Solar flares - Solar Prominences - Coronal Mass Ejections |
| Other: Solar System - Solar Variation - Solar Dynamo - Heliospheric Current Sheet - Solar Radiation - Solar Eclipse |
| The Sun is also occasionally referred to by its Latin name: Sol. |
