Extreme solar activity of early February 1986 and its geophysical consequences

Title:

Extreme solar activity of early February 1986 and its geophysical consequences

Creator:

Marková, E., Pastorek, L., Zloch, F., Laštovička, J., Perglerová, P., and Pýcha, J.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:3ffeac07-8a4a-434a-b3ef-cda3c6c29786
uuid:3ffeac07-8a4a-434a-b3ef-cda3c6c29786

Subject:

geophysics, flares, and extreme solar activity

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

During the solar cycle minimum period, a period of a suddenly enhanced solar activity occurred in early February 198d. Two proton flares were observed during this period after a long period of a totally quiet solar activity (R = 0 on most days in the second half of December and in January). Other flares, various phenomena accompanying proton flares, like type II and type IV radio bursts and a large Forbush deerease of cosmic ray intensity were observed as well as an extremely severe geomagnotic storm (Kp = 9) and strong disturbances in the Earth´s ionosphere (SIDs and ionospheric storm), Czechoslovak solar and geophysical observations for this period are presented and interpreted with the use of other observations. Special attention is given to the flares of February 4 (start 0732 and 1025 UT) and February 5 (start 0934 UT) because spectrohelioscopic observations from the Hurbanovo observatory are available for these events.

Language:

Czech

Rights:

http://creativecommons.org/publicdomain/mark/1.0/
policy:public

Coverage:

65-68

Source:

Publications of the Astronomical Institute of the Academy of Sciences of the Czech Republic | 1987 Volume:63-70 | Number:66

Harvested from:

CDK

Metadata only:

false