| 裘辛方,张仁和,殷业.黄海中部高频反向体积声散射的观察[J].声学技术,1999,(2):50~53 |
| 黄海中部高频反向体积声散射的观察 |
| Observations of high-frequency acoustic volume backscattering in the mid-Yellow Sea |
| 投稿时间：1999-01-06 修订日期：1999-03-16 |
| DOI： |
| 中文关键词: 体积散射 声散射层 内波 |
| 英文关键词: volume backscattering acoustic scattering layer internal wave |
| 基金项目:国家自然科学基金;美国海军研究署资助 |
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| 中文摘要: |
| 本文利用频率为200kHz的垂直探鱼仪对黄海中部夏季反向体积声散射进行了观察,对散射回波信号作了录音。发现晚上散射很强,白天则很弱。给出了经计算机处理后不同深度散射信号随时间的变化,获得了散射体在黎明天亮时垂直向下移动的动态记录和由散射层垂直起伏所反映出的海洋内波图象。 |
| 英文摘要: |
| Observations of high-frequency acoustic volume backscattering in the mid-Yellow Sea were made in the summer of 1996 by a 200kHz fish finder.The received scattering signals were recorded by a tape recorder and then processed by a computer. It was found that the backscattering was strong at night and became much weak in the daytime. The echo images showing the depth-dependent backscattering as a function of time, the downward movement of scatters near dawn and internal waves are presented. |
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