If the distribution of winds differs from the steady state corrsponding to the stationary distribution of atmospheric pressure, the system of current approaches to the steady state (obtained by G. I. Taylor), oscillating with a period π/ωsinψ, under the action of earth's rotation and the friction of the earth's surface.
This report is presented for the purpose of showing the general activity of recent large earthquakes (1919-1928, Sep.) in the world. The materials were all taken from I. S. S. issued from the University Observatory, Oxford.
This paper aims at the report in the geophysical seminary of the Faculty of Science, Tokyo Imperial University. First, we compared two statoscopes made by Richard Frères in the same room, and the magnification was tested by using the lift in the Physical Institute. A capillary glass tube for the mercury thermometer was connected with the exhaustion cock in open state to avoid the scale out of the pen. We installed the instrument at Suginami and Takinogawa, which situate the west end and the northern parts of the city of great Tokyo respectively, Using the records at these two stations and at Kodimati, those from the apparatus in the forecast room of the Central Meteorological Observatory, we investigated the microbarometric ripples on the surface of discontinuity. However we missed the record in the rainy season of the early summer- “Tuyu”, we could record many oscillations in the autumn, and proved the ripples is progressive. The velocity and direction of propagation of ripples were calculated by the equation applied by Prof. G. Chrystal. The analysis for the rest records are now carried on, and the total report will be published another day.
In this report, are given the results of observation of twilight concerning with their colours and intensities, which have been carried out at Kyu-Honmaru, Tokyo, since Nov. 1931 to march 1932. The apparatus used for these Observations is consisted of three films, and each films have been coloured by three original colours of various concentrations. When the author observe a twilight, two or three pieces of them are properly combined and this conbined colours can be compared to a colour of twilight. The author classified the twilights in several forms respecting of their colours and intensities from the results of observation, and further, investigated the relations between weather and “Dammerungserscheinungen”.