TY  - JOUR
A1  - Park, Jaeheung
A1  - Lühr, Hermann
A1  - Stolle, Claudia
A1  - Rodriguez-Zuluaga, Juan
A1  - Knudsen, David J.
A1  - Burchill, Johnathan K.
A1  - Kwak, Young-Sil
T1  - Statistical survey of nighttime midlatitude magnetic fluctuations: Their source location and Poynting flux as derived from the Swarm constellation
JF  - Journal of geophysical research : Space physics
N2  - This is the first statistical survey of field fluctuations related with medium-scale traveling ionospheric disturbances (MSTIDs), which considers magnetic field, electric field, and plasma density variations at the same time. Midlatitude electric fluctuations (MEFs) and midlatitude magnetic fluctuations (MMFs) observed in the nighttime topside ionosphere have generally been attributed to MSTIDs. Although the topic has been studied for several decades, statistical studies of the Poynting flux related with MEF/MMF/MSTID have not yet been conducted. In this study we make use of electric/magnetic field and plasma density observations by the European Space Agency's Swarm constellation to address the statistical behavior of the Poynting flux. We have found that (1) the Poynting flux is directed mainly from the summer to winter hemisphere, (2) its magnitude is larger before midnight than thereafter, and (3) the magnitude is not well correlated with fluctuation level of in situ plasma density. These results are discussed in the context of previous studies.
Y1  - 2016
U6  - https://doi.org/10.1002/2016JA023408
SN  - 2169-9380
SN  - 2169-9402
VL  - 121
SP  - 11235
EP  - 11248
PB  - American Geophysical Union
CY  - Washington
ER  -