Interior Flows

Interior Flows

. In this picture, red corresponds to faster-than-average flows, yellow to slower than average, and blue to slower yet. On the left side, deeply rooted zones (yellow bands), analogous to the Earth’s trade winds, travel slightly faster than their surroundings (blue regions). The right-hand cutaway reveals a slow movement poleward from the equator shown by the streamlines; the return flow below it is inferred. This image is the result of computations using one year of continuous observation, from May 1996 to May 1997, with the Michelson Doppler Imager (MDI) instrument aboard SOHO. (Courtesy of Philip H. Scherrer and the SOHO SOI/MDI consortium. SOHO is a project of international cooperation between ESA and NASA.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University