All issues
Successor
Volume 32 (1980)
- Issue 12 Pages 721-
- Issue 11 Pages 671-
- Issue 10 Pages 585-
- Issue 9 Pages 507-
- Issue 8 Pages 431-
- Issue 7 Pages 365-
- Issue 6 Pages 309-
- Issue 5 Pages 265-
- Issue 4 Pages 181-
- Issue 3 Pages 129-
- Issue 2 Pages 67-
- Issue 1 Pages 1-
- Issue Supplement3 Pag･･･
- Issue Supplement2 Pag･･･
- Issue Supplement1 Pag･･･
Volume 5 (1953)
- Issue 4 Pages 109-
- Issue 3 Pages 59-
- Issue 1-2 Pages 1-
Volume 5, Issue 1-2
Displaying 1-6 of 6 articles from this issue
- |<
- <
- 1
- >
- >|
-
Atsushi KIMPARA1953 Volume 5 Issue 1-2 Pages 1-7
Published: August 30, 1953
Released on J-STAGE: September 14, 2010
JOURNAL FREE ACCESSThe author observed atmospherics concerning the Typhoon Ruth which attacked Japan in October, 1951. He found that origins of atmospherics are not only scattered over the convergence area of the typhoon as in the case of the Typhoon Kezia in September, 1950, but also they are distributed in the convergence area in front of the trough of westerly waves as well as easterly waves, both of which are very likely connected with the typhoon.
In this case he employed fairly sensitive cathode ray direction finders, and he expects to be able to find more detailed characteristics of typhoons and other similar meteorological phenomena by using more sensitive apparata and waveforms measuring equipments.View full abstractDownload PDF (913K) -
Atsushi KIMPARA1953 Volume 5 Issue 1-2 Pages 8-13
Published: August 30, 1953
Released on J-STAGE: September 14, 2010
JOURNAL FREE ACCESSFor a long time a distinctive tonal distribution of atmospherics has been observed on the Pacific Ocean in lat. 30° to 40°N all the year round especially in autumn and winter. Although they are not so strong as those from southern districts, they are often found even in the interior of Asia at night and have a fairly narrow tonal distribution.
Abundant meteorological informations in the upper atmosphere, furnished by airplane observations and radio-soundings in the neighbourhood of Japan, show that they are generated in the convergence region of fronts in the upper atmosphere such as polar fronts. By extending this idea to the middle of the Pacific as well as in the inland of Asia, where no reliable informations are obtained, we could explain with ease the tonal distribution of atmospherics in lat. 30° to 40°N and long. 80° to 180°E.View full abstractDownload PDF (759K) -
Minoru KAWANO1953 Volume 5 Issue 1-2 Pages 14-21
Published: August 30, 1953
Released on J-STAGE: September 14, 2010
JOURNAL FREE ACCESSThe routine observations of the atmospheric electric field, atmospheric electric conductivity and space charge were carried out from Angust, 1948 to April, 1950 at Hongo, Tokyo.
In connexion with the electrical characteristics of the comparatively thin layer near the ground, which should play an important rôle for the localization of changes in the atmospheric electric field, electric disturbances on meteorologically quiet days are examined.
The electric disturbances on these days are divided into seven cases, and the correlation coefficients between these electric quantities in individual cases are obtained.
The result shows that, when the time derivative of electric field, ∂E/∂t is smaller than 4πλE, the electric field are mainly subject to its simple relation to conductivity λ, space charge ρ and vertical wind velocity w near the ground, namely, λE+ρw=const.View full abstractDownload PDF (503K) -
Motokazu HIRONO1953 Volume 5 Issue 1-2 Pages 22-38
Published: August 30, 1953
Released on J-STAGE: September 14, 2010
JOURNAL FREE ACCESSIn succession to Part I, the electrical conductivity of the E region is calculated in some detail for two atmospheric models. It is shown that the factor, by which the tidal oscillation of the E region exceeds that at ground level, should be less than 103, in order to give the observed lunar magnetic variation. The calculated lunar vertical movement of the E region is nearly in phase with that observed in South England and nearly opposite at Canberra. A possibility is shown that the calculated lunar vertical movement of the F2 region roughly agrees with that observed. It is suggested that the vertical drifts of the F2 region near the magnetic equator may be much greater than those in the other latitudes.View full abstractDownload PDF (1883K) -
Hiroshi MAEDA1953 Volume 5 Issue 1-2 Pages 39-51
Published: August 30, 1953
Released on J-STAGE: September 14, 2010
JOURNAL FREE ACCESSA detailed spherical harmonic analysis of the Sq-field shows that this field contains not only terms depending on local time but fairly conspicuous residual terms. These residual terms seem to arise mainly from an effect of the discrepancy between the earth's magnetic and rotational exec upon the dynamo-action in the Sq-layer.
By coordinate transformation to make the residuals least, we get a more suitable coordinate for the Sq-field than the geomagnetic one.View full abstractDownload PDF (1598K) -
Hiroshi MAEDA1953 Volume 5 Issue 1-2 Pages 52-57
Published: August 30, 1953
Released on J-STAGE: September 14, 2010
JOURNAL FREE ACCESSIn the preceding paper [1], we obtained a coordinate system for the geomagnetic Sq-field. The equator of this spherical coordinate may be regarded as an average equator for the Sq-field.
This equator is in good agreement with a line of eastward maximum current density calculated by the dynamo-theory taking account of the discrepancy between the geomagnetic and geographic axes and of the high electric conductivity in the equatorial zone.
These results seem to suggest the fairly deep-rooted effect of the dynamo-action due to the discrepancy of above two axes upon the Sq-field on one hand, and the high electric conductivity in the equatorial zone on the other.View full abstractDownload PDF (673K)
- |<
- <
- 1
- >
- >|