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Volume 28 Issue 4
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Article Navigation >  Acta Oceanologica Sinica  > 2009  >  (4): 96-106
YU Peilong, ZHANG Lifeng, ZHANG Yongchui, DENG Bing. Interdecadal change of winter SST variability in the Kuroshio Extension region and its linkage with Aleutian atmospheric low pressure system[J]. Acta Oceanologica Sinica, 2016, 35(5): 24-37. doi: 10.1007/s13131-016-0859-0
Citation: REN Chunping, ZOU Zhili. Laboratory study and analysis of the instability of alongshore currents[J]. Acta Oceanologica Sinica, 2009, (4): 96-106.
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Laboratory study and analysis of the instability of alongshore currents

  • State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China

  • Received Date: 2008-04-06
  • Rev Recd Date: 2008-11-27
    Abstract
  • A laboratory experiment on the instability of alongshore currents was conducted on a plane beach with slope 1:40. Low-frequency fluctuations of alongshore currents with the period of approximately 100 s were observed. The dominant frequency and amplitudes of the oscillations of alongshore currents were determined using the maximum entropy method and the regression method of trigonometric function. The variations across the beach cross-section of the oscillation amplitudes of the alongshore current were given. The linear shear instability theory was used to analyze the mechanism of the oscillation, and the calculated results agreed with measurements. This confirms that the observed fluctuation of alongshore currents is due to the shear instability of alongshore currents.
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    1. Zizhen Dong, Lin Wang, Shu Gui, et al. Diminished Impact of the East Asian Winter Monsoon on the Maritime Continent Rainfall After the Late‐1990s Tied to Weakened Siberian High–Aleutian Low Covariation. Journal of Geophysical Research: Atmospheres, 2023, 128(11) doi:10.1029/2022JD037336
    2. Peilong Yu, Minghao Yang, Chao Zhang, et al. Response of the North Pacific Storm Track Activity in the Cold Season to Multi-scale Oceanic Variations of Kuroshio Extension System: A Statistical Assessment. Advances in Atmospheric Sciences, 2023, 40(3): 514. doi:10.1007/s00376-022-2044-z
    3. Jiahao Wang, Kefeng Mao, Xi Chen, et al. Evolution and Structure of the Kuroshio Extension Front in Spring 2019. Journal of Marine Science and Engineering, 2020, 8(7): 502. doi:10.3390/jmse8070502
    4. Peilong Yu, Chao Zhang, Lifeng Zhang, et al. An Index for Depicting the Long-Term Variability of Mesoscale Eddy Activity over the Kuroshio Extension Region. Atmosphere, 2020, 11(8): 792. doi:10.3390/atmos11080792
    5. Peilong Yu, Lifeng Zhang, Mingyang Liu, et al. A comparison of the strength and position variability of the Kuroshio Extension SST front. Acta Oceanologica Sinica, 2020, 39(5): 26. doi:10.1007/s13131-020-1567-3
    6. Peilong Yu, Lifeng Zhang, Hu Liu, et al. A dual-period response of the Kuroshio Extension SST to Aleutian Low activity in the winter season. Acta Oceanologica Sinica, 2017, 36(9): 1. doi:10.1007/s13131-017-1104-1
    7. Yao Yao, Zhong Zhong, Xiu-Qun Yang, et al. An observational study of the North Pacific storm-track impact on the midlatitude oceanic front. Journal of Geophysical Research: Atmospheres, 2017, 122(13): 6962. doi:10.1002/2016JD026192

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