複雑な地形・海陸分布上の海風の動態

Abstract

In order to investigate the characteristics of the seabreeze over the complex terrain including land-sea distribution, wind system in and around the Kyoto Basin is studied from statistics and observations for summer season from May to September. The Kyoto Basin, which is located between the Osaka Bay and the Wakasa Bay, is chosen for the research field. According to the statistical study, when the upper general wind is westerly, the Kyoto Basin is dominated by south-westerly wind system in the afternoon to midnight because of the seabreeze development from the Osaka Bay. On the other hand, when the upper general wind is northerly, the seabreeze from the Wakasa Bay develops and the Kyoto Basin is dominated by easterly wind from Lake Biwa after daytime. The characteristics of the easterly wind are investigated by pilot balloon observations. From the above results, the easterly wind is considered to be the lakebreeze of Lake Biwa, which is cooled by the seabreeze of the Wakasa Bay.