摘要
台湾海峡内的潮运动是相当强烈和复杂的,一方面由于自海峡外传入的两支太平洋溯波在海峡内传播、相汇,形成强烈的潮运动;另一方面海峡内地形的复杂和岸线的曲折又使海峡内潮汐、潮流的分布变得特别复杂。自80年代以来,国内学者对海峡内的潮汐、潮流进行了不少研究（丁文兰,1983;方国洪等,1985;叶安乐等,1985,1986;李立等,1990;陈新忠,1983;郑文振等,1982）,并获得了有价值的成果。但是,他们对海峡内潮运动的过程、性质等尚有许多不同的看法。例如,关于M<sub>2</sub>分潮最大流速同潮时线的分布状况。
To study the effect of tidal mixture on the formation of upwelling along the Fujian coast, The tide and tidal current in the Taiwan Strait were calculated with the method of ADI and splitting operator. The present results show that the M2 components of tidal wave entering the Strait from the south are stronger than those calculated previously and can influence the region adjoining Jinmen island. The section linked by two points, Weitou (24°40’N, 118°30’E) and Xianxi (24°11’N, 120°25’E), can be considered as the middle line of demarcation of the Strait. In the south and north sides of the Strait, The M2 constituent features are determined mainly by the two M2 tidal waves entering the Strait from the south and north, respectively. The section linked by Weitou and Xianxi is the intersect of the two branches of the M2 tidal waves.Affected by sea bottom topography、 coastal line and tidal wave propagation, there are three regions with high tidal current velocity and two regions with low tidal current velocity in the Taiwan Strait. Tidal current velocity is high in the vicinity of the Haitan, Nanri, Penghu islands and Taiwan shoal, and low at the south-east side of Taiwan and the middle Strait. Results obtained from the model show that maximum velocity of M2 tidal current is 2.0 m/s which appears in the offshore of Haitan island. Velocities in the low tidal current velocity region are generally about 0.1m/s-0.3m/s.Average values of amplitude and phase of K1 and O1 constituents representing amplitude and phase of M1 constituent were used to calculate M1 tide and M1 tidal current.
出处
《海洋科学集刊》
CAS
1995年第1期47-53,共7页
Studia Marina Sinica
基金
国家重点基金
49136140号
