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Plasmapause location under quiet geomagnetic conditions (Kp≤1): THEMIS observations

Cited 26 time in wos
Cited 25 time in scopus
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Plasmapause location under quiet geomagnetic conditions (Kp≤1): THEMIS observations
Other Titles
THEMIS 위성관측 활용 플라즈마권 권계면의 위치 변화 연구
Kwon, H.-J.
Y. Nishimura
J.-S. Park
Jin, Ho
Jee, Geonhwa
Kim, Khan-Hyuk
Location of auroral oval; Plasmapause location
Issue Date
Kwon, H.-J., et al. 2015. "Plasmapause location under quiet geomagnetic conditions (Kp≤1): THEMIS observations". GEOPHYSICAL RESEARCH LETTERS, 42(18): 7303-7310.
We statistically examined the plasmapause location (Lpp) under quiet geomagnetic conditions (Kp ≤ 1) using the electron density inferred from the Time History of Events and Macroscale Interactions during Substorms (THEMIS) spacecraft potential for 2 year period (2008 and 2009). Five hundred forty-three Lpp samples were identified under steady quiet conditions with Kp values ≤ 1 during 12 h prior to the plasmapause crossing. From our large data set, we determined the medians and means of Lpp in L and magnetic local time (MLT). They are located near geosynchronous orbit and nearly circular. The Lpp medians show a slight bulge located in postdusk sector. Comparing with previous models, our median or mean Lpp is extended ∼1?2 L from the Earth than the model Lpp along the local time from 0800 to 2400 MLT. That is, Lpp locations in the previous models are underestimated during quiet geomagnetic conditions.
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