Abstract
By the snow fall of 30th January 1925, Tokyo and its vicinity were mantled in silverly white. On the next morning the sky was characteristically blue and air was almost still. We enjoyed bright sunshine.
On a wooden fence in the compound of the Central Meteorological Observatory the author found a nicely developed snow garland as shown in Pl. 1. fig. 1. In his excellent book “Rain, ” Prof. T. Okada has made some remarks on this phenomenon and given the dimensions of one observed by Kassner in Berlin1). The present one was far larger than German one, which excited much the author's interest. He then found the second one which is shown in fig. 2. There were remains of many fallen garlands, some of them exceeding 6 feet in length. In one place the garlands hung outside, and in other place inside the fences, irrespective of the direction of fences-some run N-S and other E-W. It depends on the inclination of the upper surface of the fences. When it was inclined inwards accumulated snow slipped inside, and hang there forming snow garland, and vice versa. The slip took place when the snow began to melt from bottom. The dimenisions measured are as follows:-
Maximum dip means the distance between the lowest point of the garland and the upper surface of the fence. The meteorological elements observed at the Observatory was as follows:-
Densities of snow measured at 10h 25m of the 30th and 31st were respectively 0.058 and 0.0842).
It is noteworthy that a torsional tendency was perceived on the snow garlands on the present occasion. (Feb. 3rd. 1925. Central Meteorological Observatory)
