Abstract
Sea breeze observed at Yuge Island in Seto-uchi and at Matsunaga on Sanyo coast, has some characters as follows.
(a) Sea breeze changes its direction from east to west during the dyatime, and west component increases towards late afternoon.
(b) The change mentioned above is remarkable in summer.
(c) The strongest breeze in a day appears later in summer than in any other season.
(d) The time of breeze starting and the time of the strongest breeze appearance are considerably later at Matsunaga than at Yuge.
(e) The changing range of breeze direction at Matsunaga is not so wide as at Yuge. Sea breeze on the coast of Bisan-seta has following characters.
(a) The breeze direction has two main different components.
(b) During the daytime, the breeze direction changes and east component increases towards late afternoon.
Sea breeze is said to be generated because of the difference of air temperature between on sea and on land. But I think it is fundamentally caused by the sunshine and it may change its direction from east to west according to the movement of sun. Moreover it is influenced by the distribution of land and sea as well as by sun, and changes its direction and strength. Therefore the feature of sea breeze must be explained in connection with the land and sea distribution of each area.
