第二室戸台風通過時の強風の分布について

Abstract

Typhoon Nancy (6118) called Second Muroto Typhoon passed over the Japan Islands, remaining remarkable records of high wind and low pressure on Sept. 16, 1961. First, the positions of the typhoon center after its landing are studied from several points ofview. Definitions of the typhoon center employed in this study are 1) the geometricalcenter of the pressure distribution, 2) the center determined by the minimum pressuredistribution and its occurrence time, 3) the geometrical center of the wind system and4) the geometrical center of the rader echo. The results determined by available datacoincide each other within their ranges of error in determination which are fairly large.Second, distribution of maximum wind speed is studied. The axis of maximum wind zoneruns about 20 km east of the path of the typhoon center. And the other characteristicfeature of the high wind distribution of this typhoon is existence of anothor high windzone along the cost line of Japan Sea, which is caused by the cold front stimulated bytyphoon movement. Lastly, topographic effect on high wind is studied by use of theelectric power line damage distribution.