Evolutionary charts of solar activity (calcium plages) as functions of heliographic longitude and time
Abstract
The richness and diversity of data relating to solar activity present a challenge from the point of view of organization and evaluation. For phenomena such as plages and centers of activity that tend to last for more than one solar rotation, a sequence of evolutionary charts based on heliographic longitude for successive solar rotations are discussed. Such a diagrammatic representation of calcium plages as a function of longitude and time, coupled with considerations of heliographic latitude, permits relatively easy and confident recognition of successively returning centers of activity.
- Publication:
-
Johns Hopkins Univ. Final Report
- Pub Date:
- August 1981
- Bibcode:
- 1981jhu..rept.....H
- Keywords:
-
- Charts;
- Faculae;
- Spectroheliographs;
- Calcium;
- Data Management;
- Latitude;
- Longitude;
- Solar Activity;
- Solar Rotation;
- Solar Physics