 |
| Titel |
MU head echo observations of the 2010 Geminids: radiant, orbit, and meteor flux observing biases |
| VerfasserIn |
J. Kero, C. Szasz, T. Nakamura |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
0992-7689
|
| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 31, no. 3 ; Nr. 31, no. 3 (2013-03-06), S.439-449 |
| Datensatznummer |
250019004
|
| Publikation (Nr.) |
 copernicus.org/angeo-31-439-2013.pdf |
|
|
|
|
|
| Zusammenfassung |
| We report Geminid meteor head echo observations with the high-power large-aperture (HPLA) Shigaraki middle and upper atmosphere (MU) radar in Japan
(34.85° N, 136.10° E). The MU radar observation campaign was
conducted from 13 December 2010, 08:00 UTC to 15 December, 20:00 UTC and
resulted in 48 h of radar data. A total of ~ 270 Geminids were observed
among ~ 8800 meteor head echoes with precisely determined orbits. The
Geminid head echo activity is consistent with an earlier peak than the visual
Geminid activity determined by the International Meteor Organization (IMO).
The observed flux of Geminids is a factor of ~ 3 lower than the
previously reported flux of the 2009 Orionids measured with an identical
MU~radar setup. We use the observed flux ratio to discuss the relation
between the head echo mass–velocity selection effect, the mass distribution
indices of meteor showers and the mass threshold of the MU radar. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|