Daytime Evolution of Equatorial Plasma Bubbles Observed by the First Republic of China Satellite
Abstract
Plasma bubbles in the equatorial F region are thought of as nighttime phenomena because they develop at night and are assumed to vanish after sunrise. However, bubbles occasionally persist throughout the night and into the day. This study investigates the origin of daytime irregularities and their evolution using data from the first Republic of China satellite. Our results show that daytime irregularities occur in the longitudes where bubbles have developed on previous nights. A newly reported feature is the observation of the temporal variation of the locations of daytime irregularities; daytime irregularities are concentrated near the magnetic equator early in the morning, but the location gradually shifts to higher latitudes with time. This phenomenon is explained in terms of the latitudinal redistribution of fossil bubbles by the ionospheric fountain effect.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- May 22, 2019
- Source ID
- 10.1029/2019gl082903
Entities
People
- Geonhwa Jee
- Hyosub Kil
- Larry J. Paxton
- Woo Kyoung Lee
Organizations
- Air Force Research Laboratory
- Johns Hopkins University
- Korea Astronomy and Space Science Institute
- Korea Polar Research Institute
- Korea University of Science and Technology
- National Research Foundation of Korea