Conjugate aurora: A case study of westward traveling surge

Author

Sato, Natsuo ; Doi, Hiroko

Author_Institution

Nat. Inst. of Polar Res., Tokyo, Japan

fYear

2009

fDate

26-27 Oct. 2009

Firstpage

1

Lastpage

4

Abstract

We report on spatial and temporal conjugacy of meso-scale (~10-200 km) westward traveling surge auroras that were simultaneously acquired with all-sky TV cameras situated at two geomagnetically conjugate points, at Raufarhofn in Iceland and at Syowa Station in Antarctica on 30 September 2000. During this event, dynamic features of WTS for westward traveling, meso-scale vortex and curl structure and small-scale ray structure, latitudinal location of surge front of WTS showed good conjugacy. On the other hand, longitudinal displacement of surge front between Syowa and Raufarhofn was 570 km, and westward traveling speed is about 1.4 km/sec in the southern hemisphere but it is about 0.8 km/sec in the northern hemisphere.

Keywords

aurora; ionosphere; AD 2000 09 30; Antarctica; Iceland; Raufarhofn; Syowa Station; all-sky TV cameras; curl structure; geomagnetically conjugate points; mesoscale vortex; ray structure; spatial-temporal conjugacy; westward traveling surge auroras; Antarctica; Cameras; Conductivity; Electrons; Large-scale systems; Magnetic field measurement; Magnetosphere; Plasma accelerators; Surges; TV; Antarctica; Aurora; Iceland; conjugacy; westward travelling surge;

fLanguage

English

Publisher

ieee

Conference_Titel

Space Science and Communication, 2009. IconSpace 2009. International Conference on

Conference_Location

Negeri Sembilan

Print_ISBN

978-1-4244-4956-9

Electronic_ISBN

978-1-4244-4956-9

Type

conf

DOI

10.1109/ICONSPACE.2009.5352683

Filename

5352683