| 释义 |
ˌsupergranuˈlation Astr.
[super- 6 b.]
A pattern of large convective cells, each thousands of miles across, covering the surface of the sun. So superˈgranular a., of or pertaining to supergranulation; superˈgranule, an individual cell of this kind.
1962R. B. Leighton et al. Astrophysical Lett. CXXXV. 494 Some of the properties of the large cells suggest that they may be a giant system of convective cells—a supergranulation—analogous to the ordinary granulation but originating in deeper layers where the scale height is relatively great. 1964Astrophysical Jrnl. CXL. 1120 The velocity cells (called ‘supergranules’)..have an average diameter of 32000 km. 1967K. O. Kiepenheuer in J. N. Xanthakis Solar Physics xiii. 385 Even large spots, with their strong magnetic fields and complex structures, seem to be tied into the pattern of the supergranular network. 1973Nature 14 Dec. 412/1 Spicules..cluster favourably in regions of enhanced magnetic fields along supergranular boundaries within the chromosphere. 1976D. F. Gray Observation & Analysis Stellar Photospheres xviii. 442 The gas flow in a supergranule mimics that of the granule, but the size of the convective cell is about 20 times as large..and there is no brightness variation across a supergranule. 1977New Scientist 13 Jan. 77/1 The supergranulation ‘cells’, unlike the small convective granulations visible on the Sun's surface, are of the order of 15000 to 30000 km across. |