Surface tidal currents in the open sea area to the east of the Zhoushan Islands measured with high frequency surface wave radar
doi: 10.1007/s13131-013-0359-4
Surface tidal currents in the open sea area to the east of the Zhoushan Islands measured with high frequency surface wave radar
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摘要: Based on the quasi-harmonic analysis of 11 d vector ocean currents obtained from two high frequency surface wave radars located at Zhujiajian Island and Shengshan Island,the spatial distribution characteristics of surface tidal currents in the open sea area to the east of the Zhoushan Islands of Zhejiang Province,China are studied.The following conclusions are drawn from the analysis:the tidal current pattern in the open sea area to the east of Zhoushan Islands is primarily regular semidiurnal,which is significantly affected by the shallow water constituents.The directions of the major axes of tidal current ellipses of M2 lie approximately in the NW-SE direction.With the increasing of distance away from the coast,the directions of the tidal current ellipses gradually shift toward the E-W direction.The tidal currents are mainly reversing currents.The spatial distribution of probable maximum current velocities decreases gradually from northeast to southwest which is basically in accordance with the spatial distribution of measured maximum current velocities.The residual currents near the coast are larger than those far away from the coast.The directions of the residual currents are basically north by east,and the angle to the due north increases gradually with the increasing distance away from the coast.The topography shows a certain impact on the spatial distribution of shallow water constituents,the rotation of tidal currents,the probable maximum currents and the residual currents.Abstract: Based on the quasi-harmonic analysis of 11 d vector ocean currents obtained from two high frequency surface wave radars located at Zhujiajian Island and Shengshan Island,the spatial distribution characteristics of surface tidal currents in the open sea area to the east of the Zhoushan Islands of Zhejiang Province,China are studied.The following conclusions are drawn from the analysis:the tidal current pattern in the open sea area to the east of Zhoushan Islands is primarily regular semidiurnal,which is significantly affected by the shallow water constituents.The directions of the major axes of tidal current ellipses of M2 lie approximately in the NW-SE direction.With the increasing of distance away from the coast,the directions of the tidal current ellipses gradually shift toward the E-W direction.The tidal currents are mainly reversing currents.The spatial distribution of probable maximum current velocities decreases gradually from northeast to southwest which is basically in accordance with the spatial distribution of measured maximum current velocities.The residual currents near the coast are larger than those far away from the coast.The directions of the residual currents are basically north by east,and the angle to the due north increases gradually with the increasing distance away from the coast.The topography shows a certain impact on the spatial distribution of shallow water constituents,the rotation of tidal currents,the probable maximum currents and the residual currents.
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Anon. 2000. Technical Codes for Port Engineering: Sector Standardsof the People's Republic of China. Beijing: People's CommunicationsPublishing HouseBarnes L. 1998. HF Radar—The Key to Efficient Wide Area MaritimeSurveillance. London: ICG Publishing LTD, 115-118 Barrick D E. 2008. 30 years of CMTC and CODAR. IEEE/OES 9thWorking Conference on Current Measurement Technology.Charleston: IEEE Press, 131-136 Cao Xinzhon, Tang Longme, Zhang Yuexiu. 1996. The analysis of theobserved ocean current and the numerical model of the tidalcurrent field for the inner sea area of Ningbo and Zhoushan.DonghaiMarine science (in Chinese), 14(2): 1-9 Chen Qian, Huang Daji, Zhang Benzhao, et al. 2003. Characteristicsof the tidal current and residual current in the seas adjacent toZhejiang. Donghai Marine Science (in Chinese), 21(4): 1-14 Chuang W S. 1985. Dynamics of subtidal flow in the Taiwan Strait.Journal of the Oceanographical Society of Japan, 41(2): 65-72 ChuangWS. 1986. A note on the drivingmechanisms of Current in theTaiwan Strait. Journal of the Oceanographical Society of Japan,42(5): 355-361 Essen H H, Gurgel K W, Schlick T. 2000. On the accuracy of currentmeasurements by means of HF radar. IEEE Journal of OceanicEngineering, 25 (4): 472-480 Fang Guohong. 1986. Tide and Tidal Current Analysis and Prediction(in Chinese). Beijing: China Ocean Press Fang Guohong, Yang Jingfei. 1988. Numerical computation of tidalcurrents in the eastern and southern parts of the East ChinaSea. Acta Oceanologica Sinica, 7(3): 344-355 Frisch A S, Weber B L. 1980. A new technique for measuring tidal currentsby using a two-site HF Doppler radar system. J GeophysRes, 85(C1): 485-493 Gough Matt K, Garfield Newell, McPhee-Shaw Erika. 2010. An analysisof HF radar measured surface currents to determine tidal,wind-forced, and seasonal circulation in the Gulf of the Farallones,California, United States. J Geophys Res, 115(C4): C4019 Liu Lei,Wu Xiongbin, Cheng Feng, et al. 2007. Algorithm for HF radarvector current measurements. Journal of Oceanography, 63(1):47-66 Mau J C, Wang Dongping, Ullman David S, et al. 2007. Comparisonof observed (HF radar, ADCP) and model barotropic tidal currentsin the New York Bight and Block Island Sound. Estuarine,Coastal and Shelf Science, 72 (1-2): 129-137 Muscarella P A, Barton N P, Lipphardt Jr B L, et al. 2011. Surface currentsand winds at the Delaware Bay mouth. Continental ShelfResearch, 31(12): 1282-1293 Prandle D. 1987. The fine-structure of near-shore tidal and residualcirculations revealed by HF radar surface current measurements.J Phys Oceanogr, 17: 231-245 Wang Zhifeng, Zhou Liangming, Zhang Gongben, et al. 2010. Tidalstreamenergy assessment in specific channels of Zhoushan seaarea. Periodical ofOceanUniversity of China (in Chinese), 40(8):27-33 Wu Xiongbin, Yang Shaolin, Cheng Feng, et al. 2003. Ocean surfacecurrents detection at the eastern China sea by HF surface waveradar. Chinese Journal of Geophysics (in Chinese), 46(3): 340-346 Zhu Dayong. 2008. Applications of High Frequency Ground WaveRadar to Coastal Ocean (in Chinese) [dissertation]. Xiamen: Departmentof Oceanography, Xiamen University Zhu Dayong, Li Li, Li Yan, et al. 2008. Seasonal variation of surfacecurrents in the southwestern Taiwan Strait observed with HFradar. Chinese Science Bulletin, 53(15): 2385-2391 Zhang Yan, Zhang Yuemei, Sun Yinglan, et al. 2005. A three-dimensionnumerical tidal model for Ningbo Zhoushan sea area. MarineEnviromental Science (in Chinese), 24(3): 60-63
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