基于声学调查实测传播损失数据和UMPE（the University of Miami parabolic equation）模型仿真，研究东海近海温跃层对水声场的影响。针对传统声学模型对不同水文要素和海洋过程难以综合考虑的限制，利用同一海域不同航次不同季节声学调查数据，综合海底地形、底质和海面实时气象水文特点，研究水声场声传播损失在浅海温跃层影响下的变化特征。结果表明，水声传播损失场是声源和水听器间几何位置及水体温、盐要素的综合反映，水声场受温跃层季节变换强烈影响。夏季正跃层海洋环境，传播损失随深度增加而较小；春季逆跃层海洋环境，声传播损失随深度增加而增大，无跃层时影响较小。温跃层对高频声场环境影响较小，对低频声场环境影响较大。
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