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Propagation characteristics of the VLF waves observed by the plasma wave experiment (PWE) on board the Arase - Collaborative observations with the Van Allen Probes
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SYSNO ASEP 0497688 Document Type A - Abstract R&D Document Type The record was not marked in the RIV R&D Document Type Není vybrán druh dokumentu Title Propagation characteristics of the VLF waves observed by the plasma wave experiment (PWE) on board the Arase - Collaborative observations with the Van Allen Probes Author(s) Kasahara, Y. (JP)
Matsuda, S. (JP)
Shoji, M. (JP)
Hikishima, M. (JP)
Santolík, Ondřej (UFA-U) RID, ORCID
Ishisaka, K. (JP)
Hospodarsky, G. (US)
Kumamoto, A. (JP)
Kurita, S. (JP)
Yagitani, S. (JP)
Ota, M. (JP)
Kojima, H. (JP)
Colpitts, Ch. (US)
Kletzing, C. (US)
Ozaki, M. (JP)
Miyoshi, Y. (JP)
Matsuoka, A. (JP)
Wygant, J. (US)
Tsuchiya, F. (JP)
Kasaba, Y. (JP)
Katoh, Y. (JP)Number of authors 21 Source Title 2 nd URSI AT-RASC Proceedings. - Gent : URSI, 2018 Number of pages 1 s. Publication form Online - E Action URSI Atlantic Radio Science Meeting (AT-RASC) /2./ Event date 28.05.2018 - 01.06.2018 VEvent location Gran Canaria Country ES - Spain Event type WRD Language eng - English Country BE - Belgium Keywords very low frequency (VLF) waves ; extremely low frequency (ELF) waves ; plasma waves ; Van Allen Probes Subject RIV BL - Plasma and Gas Discharge Physics OECD category Fluids and plasma physics (including surface physics) Institutional support UFA-U - RVO:68378289 Annotation The Plasma Wave Experiment (PWE) is one of scientific instruments on board the Arase (ERG) satellite
launched on December 20, 2016 to measure electric field from DC to 10 MHz and magnetic field from a few Hz
to 100 kHz in the inner magnetosphere [1). Varieties of operation modes are implemented in the PWE, and the
data products from the PWE are classified into continuous data and burst data. The continuous data consists of
waveform in ELF range and wave spectra in ELF/VLF/HF range for surveying the entire observation. We also
produce spectral matrices as continuous data to derive wave normal direction and Poynting flux of the plasma
waves detected by the PWE. On the other hand, the burst data is used for waveform measurements less than 20
kHz, but the data are intermittently obtained due to the limitation of the telemetry capacity. As the Arase carries
a huge mission data recorder (MDR), we store the intermittent waveform data in the MDR and transmit them to
the ground after data selection.
Since mid-March, 2017, we have been operating the PWE
optimizing its observation mode and data selection process according to the decision at the weekly data-survey
meeting. In addition, we also performed collaborative observations with the ground-based stations, Van Allen
Probes and the other satellites in the magnetosphere. We intensively conducted the burst mode operations, by
which huge amount of waveforms were continuously captured and downloaded to the ground. During the
conjunction periods between the Arase and Van Allen Probes in summer, 2017, we could identify several
correlated wave spectra for both satellites. Although the orbit of the Arase satellite is quite similar to the ones of
the Van Allen Probes, it is important to note that the inclination of Arase (31°) is much larger than the ones of
Van Allen Probes (~ 10°), which will allow us to study propagation characteristics of plasma waves not only in
the equatorial region but also in the off-equatorial region.Workplace Institute of Atmospheric Physics Contact Kateřina Adamovičová, adamovicova@ufa.cas.cz, Tel.: 272 016 012 ; Kateřina Potužníková, kaca@ufa.cas.cz, Tel.: 272 016 019 Year of Publishing 2019
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