Time-distance helioseismology with f modes as a method for measurement of near-surface flows

Travel times measured for the f mode have been used to study flows near the solar surface in conjunction with simultaneous measurements of the magneti c field. Previous flow measurements of Doppler surface rotation, small magn etic feature rotation, supergranular pattern rotation, and surface meridion al circulation have been confirmed. In addition, the flow in supergranules due to Coriolis forces has been measured. The spatial and temporal power sp ectra for a six-day observing sequence have been measured.