文献类型：期刊文献

中文题名：台风“天秤”对两种深海声道下声传播的影响

英文题名：Effects of typhoon Tembin on underwater acoustic wave propagation in two kinds of deepsound channel

作者：马志康[1];付东洋[1];屈科[1];朱凤芹[1]

机构：[1]广东海洋大学电子与信息工程学院,广东湛江524088

年份：2019

期号：3

起止页码：40

中文期刊名：海洋学研究

外文期刊名：Journal of Marine Sciences

收录：CSTPCD、、北大核心2017、CSCD2019_2020、北大核心、CSCD

基金：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)

语种：中文

中文关键词：台风;西太平洋海域;声传播;抛物方程

外文关键词：typhoon;the western Pacific Ocean;sound propagation;parabolic equation

中文摘要：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(3000 m)和完整深海声道(5500 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。

外文摘要：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(3000m)and complete deep-sound channel(5500m)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 500m.