On the Ocean waves due do Tropical Cyclones (2nd paper) Distribution of Waves viewed from Geometric Consideration and Typhoon Reconnaissance by Aircrafts

[摘要] Distribution diagrams of swell in a tropical cyclone, constructed under a simple geometric consideration, agreed satisfactorily with what had been shown by Cline, Tannehill, Ootani, Arakawa and others, and the variety of the distribution according to the speed and track of the storm was discussed quantitatively. Particularly, when the speed of the storm exceeds that of swell, it is noticeable that we can find the swell with almost an opposite direction from the wind in the left rear quadrant of the storm and the swell with a direction deviating from the wind to the left, contrary to Tannehill's consideration, in the right rear quadrant.Based upon a report on the typhoon reconnaissance by aircrafts, the variation of the state of the sea and swell with the development of the storm was investigated. It was also shown that in the case of typhoon associated with a frontal system the confused sea or the swell with an unusual direction is likely to be raised in the adjacent seas of the front. The facts that the sea in the eye of the storm is less confused when the storm moves slowly, very confused when it moves with almost the same speed as that of the wave and somewhat confused when it moves very rapidly were found and were explained theoretically. Moreover, a discussion was made with respect to the being of other regions in the storm than the eye, where the confused sea is raised.

[学科分类] 大气科学