title: Response of plasmaspheric configuration to substorms revealed by Chang'e 3.
abstract: The Moon-based Extreme Ultraviolet Camera (EUVC) of the Chang'e 3 mission provides a global and instantaneous meridian view (side view) of the Earth's plasmasphere. The plasmasphere is one inner component of the whole magnetosphere, and the configuration of the plasmasphere is sensitive to magnetospheric activity (storms and substorms). However, the response of the plasmaspheric configuration to substorms is only partially understood, and the EUVC observations provide a good opportunity to investigate this issue. By reconstructing the global plasmaspheric configuration based on the EUVC images observed during 20-22 April 2014, we show that in the observing period, the plasmasphere had three bulges which were located at different geomagnetic longitudes. The inferred midnight transit times of the three bulges, using the rotation rate of the Earth, coincide with the expansion phase of three substorms, which implies a causal relationship between the substorms and the formation of the three bulges on the plasmasphere. Instead of leading to plasmaspheric erosion as geomagnetic storms do, substorms initiated on the nightside of the Earth cause local inflation of the plasmasphere in the midnight region.
authors: National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China.|Key Laboratory of Solar Activity, Chinese Academy of Sciences, Beijing, China.
authors: Han
authors: H
authors: He
authors: School of Natural Sciences and Humanity, Harbin Institute of Technology Shenzhen Graduate School, Shenzhen, China.|State Key Laboratory of Space Weather and National Space Science Center, Chinese Academy of Sciences, Beijing, China.
authors: Chao
authors: C
authors: Shen
authors: National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China.|Key Laboratory of Solar Activity, Chinese Academy of Sciences, Beijing, China.
authors: Huaning
authors: H
authors: Wang
authors: National Center for Space Weather, China Meteorological Administration, Beijing, China.
authors: Xiaoxin
authors: X
authors: Zhang
authors: Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, China.
authors: Bo
authors: B
authors: Chen
authors: National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China.
authors: Jun
authors: J
authors: Yan
authors: National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China.
authors: Yongliao
authors: Y
authors: Zou
authors: Electrical Engineering Department, New Mexico Institute of Mining and Technology, Socorro, New Mexico, USA.
authors: Anders M
authors: AM
authors: Jorgensen
authors: Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, China.
authors: Fei
authors: F
authors: He
authors: National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China.|Key Laboratory of Solar Activity, Chinese Academy of Sciences, Beijing, China.
authors: Yan
authors: Y
authors: Yan
authors: National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China.|Key Laboratory of Solar Activity, Chinese Academy of Sciences, Beijing, China.
authors: Xiaoshuai
authors: X
authors: Zhu
authors: State Key Laboratory of Space Weather and National Space Science Center, Chinese Academy of Sciences, Beijing, China.
authors: Ya
authors: Y
authors: Huang
authors: State Key Laboratory of Space Weather and National Space Science Center, Chinese Academy of Sciences, Beijing, China.
authors: Ronglan
authors: R
authors: Xu