POLARIZATION AND ARRIVING DIRECTION OF VLF EMISSIONS AT SHOWA BASE
1969-03-30 Polarization and direction of arrival of VLF emissions have been observed at Showa Base in the Antarctic by using a combination of a vertical antenna and corossed loop antenna with their planes lying in geomagnetic E-W and N-S directions. The results obtained with a polarimeter show that...
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The Research Institute of Atmospherics, Nagoya University
1969
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ftnagoyauniv:oai:nagoya.repo.nii.ac.jp:00020043 2023-05-15T14:02:41+02:00 POLARIZATION AND ARRIVING DIRECTION OF VLF EMISSIONS AT SHOWA BASE NISHINO, Masanori 58672 TANAKA, Yoshito 58673 1969-03-30 http://hdl.handle.net/2237/22005 eng eng The Research Institute of Atmospherics, Nagoya University Proceedings of the Research Institute of Atmospherics, Nagoya University 16 81 89 http://hdl.handle.net/2237/22005 0077-264X 1969 ftnagoyauniv 2023-02-20T14:26:55Z 1969-03-30 Polarization and direction of arrival of VLF emissions have been observed at Showa Base in the Antarctic by using a combination of a vertical antenna and corossed loop antenna with their planes lying in geomagnetic E-W and N-S directions. The results obtained with a polarimeter show that the emissions at 750Hz, 12KHz and 25KHz were left-handed polarization wave in all seasons, if one looks towards the observation site on earth's magnetic field. But there seemed to be seasonal variation in the ratio of righthanded polarization wave to left-handed polarization wave. A pronounced evidence is that the emission at 25KHz was linearly polarized in winter (July and August). The oscillographic patterns obtained here with a direction finder seem to indicate that the emission at 12KHz simultaneously arrived from various directions, and that the emission was elliptically polarized. But some few cases, the emission seemed to come down roughly from vertical direction along a geomagnetic field line, and to be circularly polarized. departmental bulletin paper Other/Unknown Material Antarc* Antarctic Nagoya University: NAGOYA Repository Antarctic The Antarctic Showa ENVELOPE(39.582,39.582,-69.004,-69.004) |
institution |
Open Polar |
collection |
Nagoya University: NAGOYA Repository |
op_collection_id |
ftnagoyauniv |
language |
English |
description |
1969-03-30 Polarization and direction of arrival of VLF emissions have been observed at Showa Base in the Antarctic by using a combination of a vertical antenna and corossed loop antenna with their planes lying in geomagnetic E-W and N-S directions. The results obtained with a polarimeter show that the emissions at 750Hz, 12KHz and 25KHz were left-handed polarization wave in all seasons, if one looks towards the observation site on earth's magnetic field. But there seemed to be seasonal variation in the ratio of righthanded polarization wave to left-handed polarization wave. A pronounced evidence is that the emission at 25KHz was linearly polarized in winter (July and August). The oscillographic patterns obtained here with a direction finder seem to indicate that the emission at 12KHz simultaneously arrived from various directions, and that the emission was elliptically polarized. But some few cases, the emission seemed to come down roughly from vertical direction along a geomagnetic field line, and to be circularly polarized. departmental bulletin paper |
author |
NISHINO, Masanori 58672 TANAKA, Yoshito 58673 |
spellingShingle |
NISHINO, Masanori 58672 TANAKA, Yoshito 58673 POLARIZATION AND ARRIVING DIRECTION OF VLF EMISSIONS AT SHOWA BASE |
author_facet |
NISHINO, Masanori 58672 TANAKA, Yoshito 58673 |
author_sort |
NISHINO, Masanori |
title |
POLARIZATION AND ARRIVING DIRECTION OF VLF EMISSIONS AT SHOWA BASE |
title_short |
POLARIZATION AND ARRIVING DIRECTION OF VLF EMISSIONS AT SHOWA BASE |
title_full |
POLARIZATION AND ARRIVING DIRECTION OF VLF EMISSIONS AT SHOWA BASE |
title_fullStr |
POLARIZATION AND ARRIVING DIRECTION OF VLF EMISSIONS AT SHOWA BASE |
title_full_unstemmed |
POLARIZATION AND ARRIVING DIRECTION OF VLF EMISSIONS AT SHOWA BASE |
title_sort |
polarization and arriving direction of vlf emissions at showa base |
publisher |
The Research Institute of Atmospherics, Nagoya University |
publishDate |
1969 |
url |
http://hdl.handle.net/2237/22005 |
long_lat |
ENVELOPE(39.582,39.582,-69.004,-69.004) |
geographic |
Antarctic The Antarctic Showa |
geographic_facet |
Antarctic The Antarctic Showa |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Proceedings of the Research Institute of Atmospherics, Nagoya University 16 81 89 http://hdl.handle.net/2237/22005 0077-264X |
_version_ |
1766273037568573440 |