极地深海冰盖条件下声传播数值试验  

Numerical Simulations of Acoustic Propagation Under Ice Canopy in the Deep Arctic

作　　者：薛小强 高飞[2] 潘长明[2] 李胜全[2] 李佳讯[2] 陈符森 

机构地区：[1]中船黄埔文冲船舶有限公司,广东广州510715 [2]海军海洋测绘研究所,天津300061 [3]解放军理工大学气象海洋学院,江苏南京211101

出　　处：《海洋测绘》2015年第4期24-27,32,共5页Hydrographic Surveying and Charting

基　　金：国家自然科学基金(41406004)

摘　　要：研究极地深海声传播特征具有重要的经济、军事价值,战略意义重大。基于KRAKENC分层弹性介质简振波模型对极地深海冰盖条件下的声传播特征进行数值模拟,得出极地海域向上折射环境和较小深度声源,是形成声道现象必要条件;冰盖的散射作用导致声传播衰减强烈,且深度越大的水层受冰盖影响越小,受海底边界影响越大;声源深度越小,受冰盖影响越大。The research of the features of acoustic propagation in Arctic deep ocean owns great economy and military value, and of great strategic significance. Numerical simulations of acoustic propagation in deep Arctic are conducted using layered elastic media acoustic normal model-KRAKENC.The conclusions are：the upward refracting environment and small source depth are necessary conditions to the underwater tracks. Serious attenuation is brought about by ice scattering, and the deeper water layer is less affected by the ice canopy, but is more affected by the seabed interface.The shallower acoustic source is more affected by the ice canopy.

关 键 词：极地深海 冰层散射 KRAKENC模型 声传播衰减 数值模拟 

分 类 号：P733.23[天文地球—物理海洋学]