An Observing Plan of Wave Normal Direction of Auroral VLF Emissions on Board a Rocket at Syawa Station
P(論文) Recent in situ observations of auroral VLF emissions have shown that there are two types of emissions; one is generated at high altitudes by incoherent Cerenkov radiation and the other is generated locally in the auroral ionosphere. Hence the determination of wave normal direction of auroral V...
Main Authors: | , , |
---|---|
Language: | English |
Published: |
1978
|
Subjects: | |
Online Access: | https://nipr.repo.nii.ac.jp/record/909/files/KJ00000011882.pdf |
id |
ftnipr:oai:nipr.repo.nii.ac.jp:00000909 |
---|---|
record_format |
openpolar |
spelling |
ftnipr:oai:nipr.repo.nii.ac.jp:00000909 2024-09-09T19:51:58+00:00 An Observing Plan of Wave Normal Direction of Auroral VLF Emissions on Board a Rocket at Syawa Station Tanaka, Yoshihito Hayakawa, Masashi Nishino, Masanori 1978-10 application/pdf https://nipr.repo.nii.ac.jp/record/909/files/KJ00000011882.pdf eng eng Memoirs of National Institute of Polar Research. Special issue 9 76 86 AA00733561 https://nipr.repo.nii.ac.jp/record/909/files/KJ00000011882.pdf 1978 ftnipr 2024-06-17T04:04:30Z P(論文) Recent in situ observations of auroral VLF emissions have shown that there are two types of emissions; one is generated at high altitudes by incoherent Cerenkov radiation and the other is generated locally in the auroral ionosphere. Hence the determination of wave normal direction of auroral VLF emissions has been planned at Syowa Station, based on the measurement of the polarization ratio on a rocket. The measurement provides information on a 'cone angle' of the wave normal direction about the rocket spin axis. Since the rocket is planned to be launched along the geomagnetic field, such a cone angle is of sufficient use in the study of the generation and propagation mechanisms of auroral VLF emissions. The exact measurement of the electric field intensity is also proposed by adopting a positive feedback amplifier in an antenna-preamplifier network, which will enable us to know the ambient field intensity independently of the variation of plasma parameters. departmental bulletin paper Other/Unknown Material Memoirs of National Institute of Polar Research Polar Research National Institute of Polar Research Repository, Japan Syowa Station |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
description |
P(論文) Recent in situ observations of auroral VLF emissions have shown that there are two types of emissions; one is generated at high altitudes by incoherent Cerenkov radiation and the other is generated locally in the auroral ionosphere. Hence the determination of wave normal direction of auroral VLF emissions has been planned at Syowa Station, based on the measurement of the polarization ratio on a rocket. The measurement provides information on a 'cone angle' of the wave normal direction about the rocket spin axis. Since the rocket is planned to be launched along the geomagnetic field, such a cone angle is of sufficient use in the study of the generation and propagation mechanisms of auroral VLF emissions. The exact measurement of the electric field intensity is also proposed by adopting a positive feedback amplifier in an antenna-preamplifier network, which will enable us to know the ambient field intensity independently of the variation of plasma parameters. departmental bulletin paper |
author |
Tanaka, Yoshihito Hayakawa, Masashi Nishino, Masanori |
spellingShingle |
Tanaka, Yoshihito Hayakawa, Masashi Nishino, Masanori An Observing Plan of Wave Normal Direction of Auroral VLF Emissions on Board a Rocket at Syawa Station |
author_facet |
Tanaka, Yoshihito Hayakawa, Masashi Nishino, Masanori |
author_sort |
Tanaka, Yoshihito |
title |
An Observing Plan of Wave Normal Direction of Auroral VLF Emissions on Board a Rocket at Syawa Station |
title_short |
An Observing Plan of Wave Normal Direction of Auroral VLF Emissions on Board a Rocket at Syawa Station |
title_full |
An Observing Plan of Wave Normal Direction of Auroral VLF Emissions on Board a Rocket at Syawa Station |
title_fullStr |
An Observing Plan of Wave Normal Direction of Auroral VLF Emissions on Board a Rocket at Syawa Station |
title_full_unstemmed |
An Observing Plan of Wave Normal Direction of Auroral VLF Emissions on Board a Rocket at Syawa Station |
title_sort |
observing plan of wave normal direction of auroral vlf emissions on board a rocket at syawa station |
publishDate |
1978 |
url |
https://nipr.repo.nii.ac.jp/record/909/files/KJ00000011882.pdf |
geographic |
Syowa Station |
geographic_facet |
Syowa Station |
genre |
Memoirs of National Institute of Polar Research Polar Research |
genre_facet |
Memoirs of National Institute of Polar Research Polar Research |
op_relation |
Memoirs of National Institute of Polar Research. Special issue 9 76 86 AA00733561 https://nipr.repo.nii.ac.jp/record/909/files/KJ00000011882.pdf |
_version_ |
1809921314012528640 |