Time-Distance Helioseismology with f Modes as a Method for Measurement of Near-Surface Flows
Abstract
Travel times measured for the f mode have been used to study flows near the solar surface in conjunction with simultaneous measurements of the magnetic field. Previous flow measurements of Doppler surface rotation, small magnetic feature rotation, supergranular pattern rotation, and surface meridional circulation have been confirmed. In addition, the flow in supergranules due to Coriolis forces has been measured. The spatial and temporal power spectra for a six-day observing sequence have been measured.
- Publication:
-
Solar Physics
- Pub Date:
- March 2000
- DOI:
- 10.1023/A:1005239503637
- Bibcode:
- 2000SoPh..192..177D
- Keywords:
-
- Magnetic Field;
- Travel Time;
- Power Spectrum;
- Flow Measurement;
- Simultaneous Measurement