Abstract
EARLIER studies1,2 have shown that a geomagnetic disturbance will occur when, and only when, a coronal formation is directed towards the Earth. An idea of the features and the temporal changes of the solar corona which are not currently observable can be acquired through the known relations between coronal formations and prominences. It is also necessary to realize that the coronal structure is formed by local magnetic fields, the extent and temporal stability of which are studied by means of prominences and the chromospheric structure in general. Coronal formations can be divided into four groups: helmets, streams, equatorial helmet of the minimum type and polar rays. Streams are characterized by a relative instability of the local magnetic fields at their base, which is displayed especially by the occurrence of unstable filaments, surges and a changing chromospheric structure. The remaining coronal formations are characterized by relatively stable conditions in the chromosphere and the photosphere.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Bednářová-Nováková, B., Studia Geoph. Geod., 5, 138 (1961).
Bednářová-Nováková, B., J. Atmos. Terr. Phys., 29, 377 (1967).
Bednářová-Nováková, B., Geofysikální sborník 1965 (Travaux No. 230 Academia, Prague, 1966).
Halenka, J., Studia Geoph. Geod., 11, 101 (1967).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
BEDNÁŘOVÁ-NOVÁKOVÁ, B., HALENKA, J. New Method of Forecasting Geomagnetic Activity using Features of the Solar Corona. Nature 220, 250–251 (1968). https://doi.org/10.1038/220250b0
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1038/220250b0
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.