Deeply Penetrating Banded Zonal Flows in the Solar Convection Zone
Deeply Penetrating Banded Zonal Flows in the Solar Convection Zone
Helioseismic observations have detected small temporal variations of the rotation rate below the solar surface that correspond to the so-called "torsional oscillations" known from Doppler measurements of the surface. These appear as bands of slower- and faster-than-average rotation moving equatorward. Here we establish, using complementary helioseismic observations over 4 yr …