Both stations are located in the high latitude not only geographically but also geomagnetically.
Jong-Kyun Chung, Yong Ha Kim, Young-In Won, Bang Yong Lee 1997, 'A Study on Temperature Variation of the Upper Thermosphere in the High Latitude Throughthe Analysis of 6300 Å Airglow Data', Journal of Astronomy and Space Scienceshttp://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/1997/v14n1/OJOOBS_1997_v14n1_94.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Moreover, the pre-earthquake ionospheric anomalies were also observed in the geomagnetically conjugated region.
Yiyan Zhou, Jian Yang, Fuying Zhu, Fanfan Su, Liangchen Hu, Wenbo Zhai 2017, 'Ionospheric disturbances associated with the 2015 M7.8 Nepal earthquake', Geodesy and Geodynamicshttp://www.sciencedirect.com/science/article/pii/S1674984716301768. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The observed meridional winds turned from northward (geomagnetically equatorward) to southward (geomagnetically poleward) just before the wave was observed.
D. Fukushima, K. Shiokawa, Y. Otsuka, M. Kubota, T. Yokoyama, M. Nishioka, S. Komonjinda,C. Y. Yatini 2017, 'Geomagnetically conjugate observations of ionospheric and thermospheric variationsaccompanied by a midnight brightness wave at low latitudes', Earth, Planets and Spacehttp://link.springer.com/article/10.1186/s40623-017-0698-z. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
A small data set has been selected such that both geomagnetically quiet and disturbed conditions are represented.
B. Zolesi, M. I. Dick, L. R. Cander, P. A. Bradley, K. J. Kecic 1994, 'Further tests of the IRI and DGR model ionospheres', Annals of Geophysicshttp://www.annalsofgeophysics.eu/index.php/annals/article/view/4229. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)