Tidal currents in the Tsushima Straits estimated from ADCP data by ferryboat
Tidal currents in the Tsushima Straits estimated from ADCP data by ferryboat
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DOI：
10.1023/a:1022864306103
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发表时间：
2003-02-01
影响因子：
2.3
通讯作者：
Cho, KD
中科院分区：
文献类型：
--
作者：
Takikawa, T;Yoon, JH;Cho, KD
利用1997年2月以来安装在“茶花号”渡船上的声学多普勒海流剖面仪所获得的测量数据，对对马海峡的潮流进行了分析。在Q（1）、O-1、P-1、K-1、N-2、M2、S2、K-2等10个分潮中，以M-2、S-2、K-1、O-1分潮为主。西海峡的风场一般比东海峡强1.4-2.1倍。沿渡船轨迹沿着平均的M-2、S2、K和01的振幅之间的比率为1：0.45：0.59：0.51。潮流椭圆的长轴方向一般为西南至东北，对马群岛附近例外。从朝鲜半岛一侧接近对马群岛，长轴逐渐顺时针旋转。在西槽，M2和K1分量在90-130 m深度处将流矢量的旋转方向从顺时针方向改变为逆时针方向。潮流对渡船航迹平均动能和平均涡动动能的贡献平均分别为0.56和0.71。这表明潮流活动比平均流活动更占优势，比涡动活动更占优势。涡动活动与潮流活动相当的区域只有对马群岛东侧。
Tidal currents in the Tsushima Straits have been analyzed using measurements obtained since February 1997 by an acoustic Doppler current profiler (ADCP) mounted on the ferryboat Camellia. Tidal current constituents M-2 S-2, K-1, O-1) Are dominant among the ten tidal current constituents (Q(1), O-1, P-1, K-1, N-2, M2, S2, K-2. Msf Mf), and generally 1.4-2.1 times stronger at the western channel of the straits than those at the eastern channel. The ratio between amplitude Of M-2, S2, K, and 01 averaged along the ferryboat track is 1:0.45:0.59:0.51. The major axis directions of tidal current ellipses are generally SW to NE, exceptionally in the vicinity of the Tsushima Islands. Approaching the Tsushima Islands from the Korean Peninsula side, the major axis gradually rotates clockwise. At the western channel, the M2 and K, constituents change the rotation direction of current vectors from clockwise to counterclockwise at about 90-130 m depth. The contributions of the tidal currents to the mean kinetic energy and the mean eddy kinetic energy along the ferryboat track are, on average, 0.56 and 0.71, respectively. This suggests that tidal current activities are gene : rally more dominant than the mean current activities and much more dominant than eddy activities. The only region where the eddy activities are comparable to the tidal current activities is located on the east side of the Tsushima Islands.