Bibcode
Schroeter, E. H.; Woehl, H.; Soltau, D.; Vazquez, M.
Bibliographical reference
Solar Physics, vol. 60, Nov. 1978, p. 181-201. Deutsche Forschungsgemeinschaft
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11
1978
Journal
Citations
12
Refereed citations
12
Description
Results of almost simultaneous observations of the differential rotation
of the Ca(plus) chromosphere and the photospheric plasma are reported.
The observations (tracings of Ca(plus) mottles and Doppler shift
measurements in a photospheric line) were performed at the Locarno
station during two extended periods in 1976. Both data sets were used to
search for a large scale circulation pattern. A regular long-lived
pattern could not be detected, but a single cell with radial outflow
(approximately 40 m/sec) extending over more than 50 deg in longitude
has been found. Statistically significant temporal changes of the
differential rotation law of the Ca(plus) chromosphere correlated with
changes of meridional motions, and differences in the rotation of the
two hemispheres were observed.