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Analysis of the characteristics of offshore currents in the Changjiang (Yangtze River) estuarine waters based on buoy observations

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Abstract

A buoy of 10 m in diameter was used to record the current speed and direction in a vertical profile in the offshore area of the Changjiang (Yangtze River) Estuary (with an average water depth of 46.0 m) for one year. The results include: (1) the currents rotate clockwise and the current direction is consistent in a vertical profile without clear seasonal variations. (2) The horizontal current speeds are generally high, with a maximum of 128.5 cm/s occurring in summer and 105.5 cm/s appearing in winter commonly close to the surface. The average current speeds in the vertical profile fall in the same range (the differences are less than 8.0 cm/s), with the maximum of 47.0 cm/s occurring in summer and 40.8 cm/s in winter. The average current speed during spring tides is twice that during neap tides (26.5 cm/s). (3) Significant differences of speeds are observed in the vertical profile. The maximum current speed occurs at either surface (spring and winter) or sub-surface (summer and autumn), with the minimum current speed appearing at the bottom. The maximum average current speed of all layers is 57.9 cm/s, which occurs in the 18-m layer during summer. (4) The average speed of the residual currents ranges from 7.5 cm/s to 11.3 cm/s, with the strongest occurring in spring and weakest in winter. The residual currents of all layers are eastward during spring and winter, whereas northeastward or northward during summer and autumn. (5) The currents in the offshore of Changjiang Estuary are impacted collectively by diluted Changjiang River discharge, the Taiwan Warm Current, monsoon and tides.

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References

  • Chang P H, Isobe A, Kang K R, et al. 2014. Summer behavior of the Changjiang diluted water to the East/Japan Sea: a modeling study in 2003. Continental Shelf Research, 81: 7–18

    Article  Google Scholar 

  • Chen Jiyu, Shen Huanting, Yun Caixing, et al. 1988. Processes of Dynamics and Geomorphology of the Changjiang Estuary (in Chinese). Shanghai: Shanghai Scientific and Technical Publishers, 48–62

  • Chen Xiaoyao, Wang Xiuhong, Guo Jingsong. 2006. Seasonal variability of the sea surface salinity in the East China Sea during 1990–2002. Journal of Geophysical Research, 111(C5): C05008, doi: 10.1029/2005jc003078

    Article  Google Scholar 

  • Dai Zhijun, Chu Ao, Stive M, et al. 2011a. Unusual salinity conditions in the Yangtze Estuary in 2006: impacts of an extreme drought or of the Three Gorges Dam. AMBIO, 40(5): 496–505

    Article  Google Scholar 

  • Dai Zhijun, Du Jinzhou, Chu Ao, et al. 2011b. Sediment characteristics in the North Branch of the Yangtze Estuary based on radioisotope tracers. Environmental Earth Sciences, 62(8): 1629–1634

    Article  Google Scholar 

  • Dai Zhijun, Du Jinzhou, Li Jiufa, et al. 2008. Runoff characteristics of the Changjiang River during 2006: effect of extreme drought and the impounding of the Three Gorges Dam. Geophysical Research Letters, 35(7): L07406, doi: 10.1029/2008GL033456

    Article  Google Scholar 

  • Dai Zhijun, Du Jinzhou, Zhang Xiaoling, et al. 2010. Variation of riverine material loads and environmental consequences on the Changjiang (Yangtze) estuary in recent decades (1955–2008). Environmental Science & Technology, 45(1): 223–227

    Article  Google Scholar 

  • Guan Bingxian. 1978. A summary of current system in the East China Sea (in Chinese) [dissertation]. Qingdao: Institute of Oceanology, Chinese Academy of Sciences, 126–183

    Google Scholar 

  • Huang Y, Yin Baoshu, Perrie W, et al. 2008. Responses of summer time extreme wave heights to local climate variations in the East China Sea. Journal of Geophysical Research, 113(C9): C09031

    Google Scholar 

  • Isobe A, Ando M, Watanabe T, et al. 2002. Freshwater and temperature transports through the Tsushima-Korea Straits. Journal of Geophysical Research, 107(C7): 3065, doi: 10.1029/2000 JC000702

    Article  Google Scholar 

  • Kim H C, Yamaguch H, Yoo S, et al. 2009. Distribution of Changjiang diluted water detected by satellite chlorophyll-a and its interannual variation during 1998–2007. Journal of Oceanography, 65(1): 129–135

    Article  Google Scholar 

  • Le Kentang. 1984. A preliminary study of the path of the Changjiang diluted water: I. Model. Oceanologia et Limnologia Sinica (in Chinese), 15(2): 157–167

    Google Scholar 

  • Li Daoji, Zhang Jing, Huang Daji, et al. 2002. Oxygen depletion off the Changjiang (Yangtze River) estuary. Science in China Series D: Earth Sciences, 45(12): 1137–1146

    Article  Google Scholar 

  • Liao Qiyu, Guo Binghuo, Liu Zanpei. 2001. Analysis of direction change mechanism of the Changjiang river diluted water in summer. Journal of Oceanography of Huanghai & Bohai Seas (in Chinese), 19(3): 19–25

    Google Scholar 

  • Lie H J, Cho C H, Lee J H, et al. 2003. Structure and eastward extension of the Changjiang River plume in the East China Sea. Journal of Geophysical Research, 108(C3): 3077

    Article  Google Scholar 

  • Liu Baochao, Li Jianping, Feng Licheng. 2013. A modeling study of the effect of wind on Changjiang (Yangtze) River diluted water in summer. Haiyang Xuebao (in Chinese), 35(1): 25–37

    Google Scholar 

  • Mao Hanli, Gan ZiJun, Lan Shufang. 1963. A preliminary study of the Yangtze diluted water and its mixing processes. Oceanologia et Limnologia Sinica (in Chinese), 5(3): 183–206

    Google Scholar 

  • Moon J H, Pang I C, Yoon J H. 2009. Response of the Changjiang diluted water around Jeju Island to external forcings: a modeling study of 2002 and 2006. Continental Shelf Research, 29(13): 1549–1564

    Article  Google Scholar 

  • Park T, Jang C J, Jungclaus J H, et al. 2011. Effects of the Changjiang River discharge on sea surface warming in the Yellow and East China Seas in summer. Continental Shelf Research, 31(1): 15–22

    Article  Google Scholar 

  • Pu Yongxiu, Hang Weigeng, Xu Jianping. 2002. The spreading direction change of the Changjiang River diluted water in 7~10 days. Donghai Marine Science (in Chinese), 20(2): 1–5

    Google Scholar 

  • Rabouille C, Conley D J, Dai M H, et al. 2008. Comparison of hypoxia among four river-dominated ocean margins: the Changjiang (Yangtze), Mississippi, Pearl, and Rhône rivers. Continental Shelf Research, 28(12): 1527–1537

    Article  Google Scholar 

  • Senjyu T, Enomoto H, Matsuno T, et al. 2006. Interannual salinity variations in the Tsushima Strait and its relation to the Changjiang discharge. Journal of Oceanography, 62(5): 681–692

    Article  Google Scholar 

  • Su Jilan. 2005. Zhongguo Jinhai Shuiwen (in Chinese). Beijing: China Ocean Press, 229–249

    Google Scholar 

  • Su Jilan, Pan Yuqiu. 1989. A preliminary study of shelf circulation dynamics north of Taiwan. Haiyang Xuebao (in Chinese), 11(1): 1–14

    Google Scholar 

  • Tang Jun, Shen Yongming, Qiu Dahong. 2008. Numerical simulation of longshore currents and pollutant movement in waves and currents in coastal zone. Haiyang Xuebao (in Chinese), 30(1): 147–155

    Google Scholar 

  • Wang Ya, He Qing, Shen Jian. 2014. The study of the transport timescale in the Changjiang Estuary. Haiyang Xuebao (in Chinese), 36(1): 45–55

    Google Scholar 

  • Wang Xiaohong, Yu Zhiming, Fan Wei, et al. 2015. Water flux and exchange in Changjiang River estuary and adjacent waters on coupled model of hydrodynamic roms and box model. Oceanologia et Limnologia Sinica (in Chinese), 46(1): 118–132

    Google Scholar 

  • Wen Wei, Chang Yuanpin, Dai Zhijun. 2014. Streamflow changes of the Changjiang (Yangtze) River in the recent 60 years: impacts of the East Asian summer monsoon, ENSO, and human activities. Quaternary International, 336: 98–107

    Article  Google Scholar 

  • Wu Hui, Shen Jian, Zhu Jianrong, et al. 2014. Characteristics of the Changjiang plume and its extension along the Jiangsu Coast. Continental Shelf Research, 76: 108–123

    Article  Google Scholar 

  • Zhang Wenjing, Zhu Shouxian, Li Xunqiang, et al. 2014. Impact of tide induced residual current and tidal mixing on the low salinity water lens in the northeast out of the Changjiang Estuary. Haiyang Xuebao (in Chinese), 36(3): 9–18

    Google Scholar 

  • Zhao Baoren. 1991. Mechanism of expansion trend of the Yangtze diluted water. Haiyang Xuebao (in Chinese), 13(5): 600–610

    Google Scholar 

  • Zhao Baoren. 1993. The upwelling off Yangtze River estuary. Haiyang Xuebao (in Chinese), 15(2): 108–114

    Google Scholar 

  • Zhou Feng, Xuan Jiliang, Ni Xiaobo, et al. 2009. A preliminary study on variations of the Changjiang Diluted Water between August 1999 and 2006. Haiyang Xuebao (in Chinese), 31(4): 1–12

    Google Scholar 

  • Zhu Jianrong, Hu Dunxin, Xiao Chengyou. 2004a. Observed residual currents off the Changjiang (Yangtze) River mouth in winter time of 1959 and 1982. Chinese Journal of Oceanology and Limnology, 22(3): 244–249

    Article  Google Scholar 

  • Zhu Jianrong, Qi Dingman, Xiao Chengyou. 2004b. Observed residual currents off the Changjiang (Yangtze) River mouth in summer time of 1959 and 1982. Chinese Journal of Oceanology and Limnology, 22(3): 250–255

    Article  Google Scholar 

  • Zhu Jianrong, Shen Huanting, Zhou Jian. 1997. Numerical simulation of the impact of the Subei Coastal Current on the expansion of the Changjiang River diluted water in summer. Journal of East China Normal University (Natural Science) (in Chinese), 2): 62–67

    Google Scholar 

  • Zhu Jianrong, Wang Jinhui, Shen Huanting, et al. 2005. Observation and analysis of the diluted water and red tide in the sea off the Changjiang River mouth in middle and late June 2003. Chinese Science Bulletin, 50(3): 240–247

    Article  Google Scholar 

  • Zhu Jianrong, Xiao Chengyou, Shen Huanting. 1998. Numerical model simulation of expansion of Changjiang diluted water in summer. Haiyang Xuebao (in Chinese), 20(5): 13–22

    Google Scholar 

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Authors and Affiliations

  1. Forecast Center for East China Sea, State Oceanic Administration, Shanghai, 200136, China

    Peng Li, Yangang Li & Jian Chen

  2. Ministry of Education Key Laboratory for Coast and Island Development, Nanjing University, Nanjing, 210093, China

    Benwei Shi & Yaping Wang

  3. Marine Environment Investigation Center of East China Sea, State Oceanic Administration, Shanghai, 200137, China

    Weihua Qin

Authors
  1. Peng Li
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  2. Benwei Shi
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  3. Yaping Wang
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  4. Weihua Qin
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  5. Yangang Li
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  6. Jian Chen
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Correspondence to Benwei Shi.

Additional information

Foundation item: The Major State Basic Research Development Program under contract No. 2013CB956502; the State Key Laboratory of Estuarine and Coastal Research Funds under contract No. SKLEC200906; the National Natural Science Foundation of China under contract No. 41625021.

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Li, P., Shi, B., Wang, Y. et al. Analysis of the characteristics of offshore currents in the Changjiang (Yangtze River) estuarine waters based on buoy observations. Acta Oceanol. Sin. 36, 13–20 (2017). https://doi.org/10.1007/s13131-017-0973-7

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  • DOI: https://doi.org/10.1007/s13131-017-0973-7

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