The Determination of the Velocity Amplitude of the Total Photospheric Motion Field. I: The Use of the Weak and Moderately Weak Lines
Abstract
By the analysis of the profiles of 20 weak lines observed at five centre-to-limb positions on the solar disk, radial and tangential components of the velocity amplitude of the photospheric motion field are derived in the range of optical depth - 3.0 ⩽ lgτ5 ⩽ +0.5.
- Publication:
-
Solar Physics
- Pub Date:
- February 1974
- DOI:
- 10.1007/BF00153666
- Bibcode:
- 1974SoPh...34..291K
- Keywords:
-
- Optical Depth;
- Tangential Component;
- Solar Disk;
- Velocity Amplitude;
- Motion Field