GONG Observations of Solar Surface Flows     

DH Hathaway  PA Gilman  JW Harvey  F Hill  RF Howard  HP Jones  JC Kasher  JW Leibacher  JA Pintar  GW Simon 《Science (New York, N.Y.)》1996,272(5266):1306-1309

Doppler velocity observations obtained by the Global Oscillation Network Group (GONG) instruments directly measure the nearly steady flows in the solar photosphere. The sun's differential rotation is accurately determined from single observations. The rotation profile with respect to latitude agrees well with previous measures, but it also shows a slight north-south asymmetry. Rotation profiles averaged over 27-day rotations of the sun reveal the torsional oscillation signal-weak, jetlike features, with amplitudes of 5 meters per second, that are associated with the sunspot latitude activity belts. A meridional circulation with a poleward flow of about 20 meters per second is also evident. Several characteristics of the surface flows suggest the presence of large convection cells.  相似文献   

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SJ Potter  NJ Bamford  PA Harris  SR Bailey 《Australian veterinary journal》2017,95(10):370-374

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