海洋学研究 ›› 2022, Vol. 40 ›› Issue (1): 101-111.DOI: 10.3969/j.issn.1001-909X.2022.01.011

• • 上一篇    

台风期间浮标和潜标上ADCP的空间变化、数据误差及校正#br#

基于南海北部浮标和潜标的声学多普勒流速剖面仪(ADCP)数据，通过一套几何算法计算了台风海鸥(1415)期间ADCP的空间变化和流速误差，并进行数据校正。浮标上，台风过后ADCP的水平位移最大可达2.61 km，水平流速误差最大可达0.27 m/s，垂向流速误差最大仅为5×10-4 m/s；温跃层流速校正值在台风过后显著大于流速测值，这表明水平校正对于温跃层流速的质量控制很重要。潜标上，ADCP最大垂向位移增量为179 m，最大绳子倾角为35°，最大水平位移为1.5 km；ADCP水平流速误差和倾角误差都很小，在数据校正中可忽略不计，但对台风过后中层流速的垂向校正不能忽略。


  

  1. 1.河海大学海洋学院，江苏 南京 210098; 
    2.卫星海洋环境动力学国家重点实验室，浙江 杭州 310012;
    3.自然资源部第二海洋研究所，浙江 杭州 310012; 
    4.南方海洋科学与工程广东省实验室(珠海)，
    广东 珠海 519082; 
    5.北大不列颠大学环境科学与工程学院，大不列颠哥伦比亚，
    乔治王子城 V2N4Z9; 
    6.上海海洋大学海洋学院，上海 201306
  • 出版日期:2022-03-15 发布日期:2022-03-15
  • 基金资助:
    国家重点研发计划 (2017YFA0604202)；中央级公益性科研院所基本科研业务费专项资金项目(JG2008，QNYC2002)；南方海洋科学与工程广东省实验室(珠海)资助项目(SML2021SP207)；南方海洋科学与工程广东省实验室(珠海)创新团队建设项目(311021001)；浙江省重点研发计划(2021C03186)；国家自然科学基金项目(42176015，41730535) 

Based on the Acoustic Doppler Current Profiler (ADCP) data of buoy and mooring during Typhoon Kalmaegi (1415) in the northern South China Sea, a set of algorithms were proposed to calculate the spatial variation, data bias and correction. On buoys, the maximum horizontal displacement of ADCP can reach 2.61 km, the maximum horizontal velocity bias can reach 0.27 m/s, but the maximum vertical velocity bias is only 5×10-4 m/s after the typhoon. The velocity in thermocline of horizontal correction after typhoon is prominently larger than the observed velocity, indicating the horizontal correction is necessary for the quality control of the thermocline velocity. On moorings, the maximum displacement increments on the mooring are closed to 179 m, the maximum rope tilt angle can reach 35°, the maximum horizontal displacement of ADCP can reach 1.5 km. The horizontal velocity bias and tilt bias of ADCP are small to be ignored,the vertical correction can not be ignored for velocity of middle layer after typhoon.   

  1. 1.College of Oceanography, Hohai University, Nanjing 210098, China; 
    2.State Key Laboratory of Satellite Ocean 
    Environment Dynamics, Hangzhou 310012, China; 
    3.Second Institute of Oceanography, Ministry of Natural Resources, 
    Hangzhou 310012, China; 
    4.Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, 
    China; 
    5.Environmental Science and Engineering, University of Northern British Columbia, Prince George V2N4Z9,
     British Columbia, Canada; 
    6.College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China
  • Online:2022-03-15 Published:2022-03-15

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摘要： 基于南海北部浮标和潜标的声学多普勒流速剖面仪(ADCP)数据，通过一套几何算法计算了台风海鸥(1415)期间ADCP的空间变化和流速误差，并进行数据校正。浮标上，台风过后ADCP的水平位移最大可达2.61 km，水平流速误差最大可达0.27 m/s，垂向流速误差最大仅为5×10-4 m/s；温跃层流速校正值在台风过后显著大于流速测值，这表明水平校正对于温跃层流速的质量控制很重要。潜标上，ADCP最大垂向位移增量为179 m，最大绳子倾角为35°，最大水平位移为1.5 km；ADCP水平流速误差和倾角误差都很小，在数据校正中可忽略不计，但对台风过后中层流速的垂向校正不能忽略。


关键词: ADCP, 台风, 位移, 误差, 校正

Abstract: Based on the Acoustic Doppler Current Profiler (ADCP) data of buoy and mooring during Typhoon Kalmaegi (1415) in the northern South China Sea, a set of algorithms were proposed to calculate the spatial variation, data bias and correction. On buoys, the maximum horizontal displacement of ADCP can reach 2.61 km, the maximum horizontal velocity bias can reach 0.27 m/s, but the maximum vertical velocity bias is only 5×10-4 m/s after the typhoon. The velocity in thermocline of horizontal correction after typhoon is prominently larger than the observed velocity, indicating the horizontal correction is necessary for the quality control of the thermocline velocity. On moorings, the maximum displacement increments on the mooring are closed to 179 m, the maximum rope tilt angle can reach 35°, the maximum horizontal displacement of ADCP can reach 1.5 km. The horizontal velocity bias and tilt bias of ADCP are small to be ignored,the vertical correction can not be ignored for velocity of middle layer after typhoon.

Key words: ADCP, typhoon, displacement, bias, correction

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