제주도 지방의 해륙풍 특성에 관한 연구

Abstract

1973-1977년 동안 운량이 7.5미만인 날의 시각별 풍향. 풍속 자료로부터 평균 벡터풍을 계산하여 제주도(제주, 서귀포)지방의 해륙풍의 1차원적 특성을 조사하였다. 1) 섬의 북단에 위치한 제주에서는 SWW-N-NEE계열의 바람이 해풍, NEE-S-SWW계열의 바람이 육풍이며 섬의 남단에 위치한 서귀포에서는 E-S-W계열의 바람이 해풍, W-N-E계열의 바람이 육풍이다. 2) 이 지역에서 해풍은 오전8시에서 오전10시 사이에 시작되며 풍속은 2.5 m/sec이하이며 육풍은 오후6시에서 오후8시 사이에 시작되며 풍속은 1.9m/sec이하로 해풍이 육풍보다 강하게 나타났다. 3) 해풍의 지속시간은 8시간내지 11시간이며 여름철이 겨울철에 비하여 길게 나타났다. 4) 풍향의 변화는 해풍이 육풍보다 규칙적이며 해륙풍의 특성은 한랭한 계절보다 온난한 계절에 보다 더 잘 나타났다.;The one dimensional characteristics of Cheju-Island (Cheju and Soˇgwipo cities) were studied with the mean vector wind calculated from the data of hourly direction and velocity of wind for those days having the cloud amount less than 7.5 from 1973 to 1977. The outcomes of the studies are as follows. 1. In Cheju located in the northern area of Cheju-Island, the sea breeze had the direction of SWW-N-NEE range, but the land breeze had the direction of NEE-S-SWW range. In Soˇgwipo located in the southern area of Cheju-Island, the sea breeze had the direction of E-S-W range, but the land breeze had the direction of W-N-E range. 2. In this region, the sea breeze began to occur from 8 a.m. to 10 a.m. and had the velocity of less than 2.5 m/sec. The land breeze began to occur from 6 p.m. to 8 p.m. with the velocity of less than 1.9 m/sec. The sea breeze occurred more strongly than the land breeze. 3. The duration of the sea breeze was about 8-11 hours. The sea breeze in summer season was longer than that in winter season. 4. The changes in the direction of the sea breeze occurred more regularly than that of the land breeze. The characteristics of sea and land breeze in the warm season occurred to be more conspiciously than those in chilly season.