• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国政府科技报告 >Temporal and Spatial Variabilities in Shallow Water Acoustics: Measurements and Predictions
【24h】

Temporal and Spatial Variabilities in Shallow Water Acoustics: Measurements and Predictions

机译：浅水声学中的时空变化：测量和预测

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

An acoustic signal propagating in the sea is generally degraded not only by interactions with the bottom and surface boundaries, but also by volume inhomogeneities caused by non-uniformities in temperature, density, and salinity distributions. The degradations in the acoustical signal are manifested by fluctuations in its amplitude and phase and by an accompanying loss in its coherence properties. The results of experiments conducted in a shallow water area of the Mediterranean are used to establish correlations between fluctuations in acoustic transmission loss and variability in the environmental parameters. The physical processes responsible for the observed fluctuations are identified primarily with inertial effects, semidiurnal tides, and fine-structure. Using a modified version of SNAP (SACLANTCEN Normal Mode Acoustic Propagation Model) comparisons are made between measured and predicted acoustic transmission loss.

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号