 |
| Titel |
Some characteristics of large-scale travelling ionospheric disturbances and a relationship between the F2 layer height rises of these disturbances and equatorial pre-sunrise events |
| VerfasserIn |
G. G. Bowman, I. K. Mortimer |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
0992-7689
|
| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 28, no. 7 ; Nr. 28, no. 7 (2010-07-12), S.1419-1430 |
| Datensatznummer |
250016857
|
| Publikation (Nr.) |
 copernicus.org/angeo-28-1419-2010.pdf |
|
|
|
|
|
| Zusammenfassung |
| Initially some characteristics of large-scale travelling ionospheric
disturbances (LS-TIDs) have been discussed briefly particularly as
reported in the early literature. These discussions also involve the
literature on the generation of LS-TIDs at times of geomagnetic bays.
Secondly, the possibility that LS-TIDs may be responsible for the F2
layer equatorial pre-sunrise height rises is investigated. Tabulations at
hourly intervals of h'F at Huancayo and Washington for a Rz max period
(1957–1960) have been used to identify height rises. For a three-hour
interval at Huancayo h'F levels equal to or greater than 40 km of medians are
used to identify the pre-sunrise height rises. Also height rises at
Washington, which occurred earlier than those at Huancayo, have been
considered for evidence of travelling disturbances. For 40 events analysed
using geomagnetic bays and Washington height rises, a few hours before they
occur at Huancayo, indicate the statistical significance of an association
with LS-TIDs. Similar results of statistical significance have been obtained
using Washington events and bays on average 34 h before 46 Huancayo events.
These delays ranged from 29 h to 38 h. The results indicate that bays which
occur the day before are responsible for LS-TIDs which encircle the earth. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|