Physics
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsa52a0409m&link_type=abstract
American Geophysical Union, Fall Meeting 2002, abstract #SA52A-0409
Physics
2431 Ionosphere/Magnetosphere Interactions (2736), 2435 Ionospheric Disturbances, 2439 Ionospheric Irregularities, 2768 Plasmasphere
Scientific paper
Korea has launched its first multi-purpose satellite, KOMPSAT-1, on December 21, 1999 into 685 km altitude sun-synchronous polar orbit with the descending node at 22:50 local time. The unique orbital characteristic of the spacecraft is suitable for the global study of upper ionosphere at fixed local time and altitude. Ionospheric Measurement Sensor (IMS), composed of a Langmuir Probe (LP) and the Electron Temperature Probe (ETP), monitored the variation of the nighttime local ionosphere along the satellite track until August 2, 2001. The present paper describes the variation of the mid-latitude ionospheric trough observed by IMS according to the geomagnetic disturbance as well as its possible seasonal variations. It is seen that the trough location moves equatorward and the subauroral temperature enhances as the Kp index increases, as previously reported. While the midlatitude electron density generally increases with Kp, it is seen that the density at the trough decreases with the increasing Kp. In order to study the storm and substorm features, both the Kp and the Dst indices are compared with these activities.
Lee Edward
Min Kyoung-Wook
Park Sahnggi
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