Tsuda, T., Rietveld, M., Kosch, M., Oyama, S., Ogawa, Y., Hosokawa, K., Nozawa, S., Kawabata, T., Mizuno, A. (2018) Survey of conditions for artificial aurora experiments by the second electron gyro-harmonic at EISCAT Tromsø using dynasonde data. Earth, Planets and Space, 70 (1), 94. doi:10.1186/s40623-018-0864-y
Survey of conditions for artificial aurora experiments by the second electron gyro-harmonic at EISCAT Tromsø using dynasonde data
|Author:||Tsuda, T. T.1; Rietveld, M. T.2,3; Kosch, M. J.4,5,6;|
1Department of Computer and Network Engineering, The University of Electro-Communications (UEC)
2European Incoherent SCATter (EISCAT) Scientific Association
3Department of Physics and Technology, University of Tromsø (UiT) - The Arctic University of Norway
4South African National Space Agency (SANSA)
5Department of Physics, Lancaster University
6Department of Physics and Astronomy, University of the Western Cape
7Institute for Space-Earth Environmental Research (ISEE), Nagoya University
8National Institute of Polar Research (NIPR)
9Ionosphere Research Unit, University of Oulu
10Department of Polar Science, Graduate University for Advanced Studies (SOKENDAI)
|Online Access:||PDF Full Text (PDF, 0.9 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2018082233893
|Publish Date:|| 2018-08-22
We report a brief survey of matching conditions for artificial aurora optical experiments utilizing the second electron gyro-harmonic (2.7-MHz frequency) in F region heating with O-mode at the EISCAT Tromsø site using dynasonde data from 2000 to 2017. Our survey indicates the following: The possible conditions for successful artificial aurora experiments are concentrated on twilight hours in both evening and morning, compared with late night hours; the possible conditions appear in fall, winter, and spring, while there is no chance in summer, and the month-to-month variation among fall, winter, and spring is not so clear; the year-to-year variation is well correlated with the solar activity. These characteristics in the case of 2.7-MHz frequency are basically similar to those previously reported in the case of 4-MHz frequency. However, the number of days meeting the possible condition in the case of 2.7-MHz frequency is obviously large, compared with that in the case of 4-MHz frequency. In particular, unlike the 4-MHz frequency operation, the 2.7-MHz frequency operation can provide many chances for successful artificial aurora experiments even during the solar minimum.
Earth, planets and space
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
115 Astronomy and space science
This work was supported in part by MEXT/JSPS KAKENHI grants, JP26610157, JP15H05747, JP15H05815, JP16H01171, JP16H02230, JP16H06021, JP16H06286, JP16K05569, and JP17H02968, by the Sumitomo Foundation Basic Science Research grant, 150627, by National Institute of Polar Research (NIPR) through General Collaboration Project, 28-2, and by the joint research program of the Institute for Space-Earth Environmental Research (ISEE), Nagoya University.
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