Papers in Meteorology and Geophysics

If earthquakes are produced by stress, the radiation patterns fo. them must be the quadrant type. But many observed radiation pat terns are not quadrant, but conical type. This points to the fac'that earthquakes are not produced by stress.
If earthquakes are produced by stress, earthquakes which havl the same radiation patterns ought to cause the same faults (topo graphical changes). But, in practice, the radiation patterns are no in agreement with faults (topographical changes). To show this, thl author took up the Toonankai earthquake of December 7,1944 an the Nankaido earthquake of December 21,1946.
If earthquakes are produced by stress, their momentum should bl conserved at any initial time. But, in many of actual earthquakes their momentum is not conserved, as is seen in the Fukui earthquake of June 28,1948.
The Mag m a Explosion theory of earthquakes reconciles these con tradictions.

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The sea wave spectra on the ocean surface has to be measured accurately under various synoptic weather conditions. The present paper, rather than similar methods such as by the TUCKER (1952)system, deals with the method by which the ship's vertical acceleration Z and the vertical height ζ from one fixed point upon the ship to the sea level are measured at the same time, without recording the wave profile on the sea-surface, and carrying out the spectral synthesis on the basis of the following spectral synthesis theorem:
and directly determine the wave spectrum Sη(ω) by the computation of each spectrum from those measured values.
Inasmuch as the existing instrumentation is inconvenient in practicing the observing method of new high quality based upon the abovementioned theory, a more convenient and feasible instrumentation model will be proposed, and its benefits and available extetnt of use as well as accuracy will be referred to.

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