台风“天秤”对两种深海声道下声传播的影响

doi:10.3969/j.issn.1001-909X.2019.03.005

海洋学研究 ›› 2019, Vol. 37 ›› Issue (3): 40-48.DOI: 10.3969/j.issn.1001-909X.2019.03.005

台风“天秤”对两种深海声道下声传播的影响

马志康, 付东洋^*, 屈科, 朱凤芹

广东海洋大学电子与信息工程学院,广东湛江 524088

收稿日期:2018-11-07 修回日期:2019-05-20 出版日期:2019-09-15 发布日期:2022-11-14
通讯作者: *付东洋(1969-),男,教授,主要从事海洋遥感方面的研究。E-mail:fdy163@163.com
作者简介:马志康(1996-),男,山西长治市人,主要从事海洋声场建模及应用方面的研究。E-mail:mzk@hrbeu.edu.cn
基金资助:
国家海洋公益性行业科研专项项目资助(201305019);广东省自然科学基金资助(2014A030313603,2014A030310256);广东省科技计划项目资助(2013B030200002,2016A020222016);广东海洋大学创新强校项目资助(GDOU2014050226);广东省普通高校优秀青年创新人才培养计划项目资助(2012WYM_0077)

Effects of typhoon Tembin on underwater acoustic wave propagation in two kinds of deep sound channel

MA Zhi-kang, FU Dong-yang^*, QU Ke, ZHU Feng-qin

College of Electronics and Information Engineering,Guangdong Ocean University,Zhanjiang 524088,China

Received:2018-11-07 Revised:2019-05-20 Online:2019-09-15 Published:2022-11-14

摘要/Abstract

摘要： 将Argo浮标资料与卫星遥感再分析数据相结合,调用基于抛物方程算法的RAM(Range-dependent Acoustic Model)模型,研究了2012年第14号台风“天秤”对不完整深海声道(3 000 m)和完整深海声道(5 500 m)两种水深条件下声传播特性的影响。结果显示:台风对海水的影响局限于表层水体,具体为混合层加厚,混合层内温度梯度接近于零,声速在混合层内正梯度分布;混合层下方一定深度的水体增温,相应的声速也增大。声源在混合层内时,主要对海表层的声传播产生影响,两种水深条件下均出现表面波导声传播模式以及泄漏模式。声源在混合层以下时,不完整深海声道条件下台风使得会聚区向着声源方向靠近;完整深海声道条件下台风对会聚区的位置影响不明显,但声波的翻转深度增加近500 m。

关键词: 台风, 西太平洋海域, 声传播, 抛物方程

Abstract: Using RAM (Range dependent Acoustic Model) model which was based on parabolic equation algorithm and combined Argo floats with multi-satellite data, effects of typhoon on acoustic propagation characteristics for incomplete deep-sound channel(3 000 m) and complete deep-sound channel(5 500 m) were researched. Results show that the influence of typhoon on sea water is confined in surface layer, which is characterized by the thickening of the mixed-layer, zero temperature gradient and positive sound speed gradient in the mixed-layer. At a certain depth below the mixed-layer, the water temperature increases, and the corresponding sound speed increases. When the sound source is placed in the mixed-layer, sound propagation in sea surface layer will be affected, the surface waveguide sound propagation and leakage modes appear in both incomplete and complete deep-sound channels. When the source is under the mixed layer, typhoon makes the convergence zone close to the sound source under the condition of incomplete deep-sound channel.Under the condition of complete deep-sound channel, the disturbance of typhoon on the location of convergence zone is not obvious, but the flip depth of the sound wave increases nearly 500 m.

Key words: typhoon, the western Pacific Ocean, sound propagation, parabolic equation

中图分类号:

P444
P733.2

马志康, 付东洋, 屈科, 朱凤芹. 台风“天秤”对两种深海声道下声传播的影响[J]. 海洋学研究, 2019, 37(3): 40-48.

MA Zhi-kang, FU Dong-yang, QU Ke, ZHU Feng-qin. Effects of typhoon Tembin on underwater acoustic wave propagation in two kinds of deep sound channel[J]. Journal of Marine Sciences, 2019, 37(3): 40-48.

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台风“天秤”对两种深海声道下声传播的影响

Effects of typhoon Tembin on underwater acoustic wave propagation in two kinds of deep sound channel

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