PREVAILING WIND OVER THE CITY AREA OF TOKAI, ESTIMATED FROM DUST DEPOSITS ON THE SURFACE OF LEAVES

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  • 葉面付着ばいじんを指標としてみた東海市の卓越風
  • ハ メンツケチャク バイジン オ シヒョウ ト シテ ミタ トウカイシ ノ タクエツフウ

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Abstract

The K amount of dust deposit on a leaf reflects wind direction, namely the amount of dust which adhered to the surface of the leaf facing windward direction is larger than that of any other direction. In this study, in order to clarify the distribution of the prevailing wind over the city area of Tôkai, Aichi Prefecture, the authors investigated the amount o dust deposit on the surface of leaves. The results are summarized as follows:<br> (1) Summer ( Fig. 2)<br> (a) The southerly winds, summer monsoon, from the Mikawa Pay flow to the north along the Sakai River, and then the winds change their direction to the northwest in the southern and the eastern parts of city area.<br> (b) The westerly winds which are considered to be sea breeze flow into the northern part and the coast area of city.<br> (2) Winter (Fig. 3)<br> The northwesterly winds, winter monsoon, prevail over the city area.<br> (3) It is clear that the topography in local scale chang the wind direction, as shown in Figs. 2 and 3.

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