Search: onr:"swepub:oai:DiVA.org:kth-39270" >
Electromagnetic cha...
Electromagnetic characteristics of the high-latitude ionosphere during the various phases of magnetic substorms
- Article/chapterEnglish1996
Publisher, publication year, extent ...
Numbers
-
LIBRIS-ID:oai:DiVA.org:kth-39270
-
https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-39270URI
-
https://doi.org/10.1029/96JA00514DOI
Supplementary language notes
-
Language:English
-
Summary in:English
Part of subdatabase
Classification
-
Subject category:ref swepub-contenttype
-
Subject category:art swepub-publicationtype
Notes
-
NR 20140805
-
Model calculations of the electrodynamics of the high-latitude ionosphere are compared to measurements made by the Viking satellite during July-August 1986. The model calculations are based on the IZMEM procedure, where the electric field and currents in the ionosphere are given as functions of the interplanetary magnetic field. The events chosen correspond to the growth, the expansion, and the recovery phases of substorms. During the growth and expansion phases the correlation between the model results and the satellite data is rather good. During recovery phase the correlation is not as good. The correlation between modeled and observed quantities suggest that during growth and expansion phase the magnetosphere is mainly directly driven by the solar wind, whereas during recovery phase it is mainly driven by internal processes, i.e., loading-unloading. Best fit is obtained when averaging the measured quantities over a few minutes, which means adjusting the spatial resolution of the measurements to the resolution of the model. Different time delays between the interplanetary magnetic field observations and those of Viking were examined. Best agreement was obtained, not surprisingly, for time delays corresponding to the estimated information transit time from the solar wind spacecraft to the ionosphere.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
-
Gromova, L I
(author)
-
Levitin, A E
(author)
-
Blomberg, LarsKTH,Alfvénlaboratoriet,Rymd- och plasmafysik(Swepub:kth)u1sm5h8r
(author)
-
Marklund, GöranKTH,Alfvénlaboratoriet,Rymd- och plasmafysik(Swepub:kth)u1yq52h6
(author)
-
Lindqvist, Per-ArneKTH,Alfvénlaboratoriet,Rymd- och plasmafysik(Swepub:kth)u1yukyk9
(author)
-
KTHAlfvénlaboratoriet
(creator_code:org_t)
Related titles
-
In:Journal of Geophysical Research101:A9, s. 19921-199360148-02272156-2202
Internet link
Find in a library
To the university's database