Backscattering of Explosive Sound from the Deep‐Sea Bed
Backscattering of Explosive Sound from the Deep‐Sea Bed
复制标题
深海海底爆炸声的后向散射
DOI：
10.1121/1.1909106
复制
发表时间：
1962
影响因子：
2.4
通讯作者：
D. S. Saling
中科院分区：
文献类型：
--
作者：
R. Urick;D. S. Saling
爆炸装药产生的声音在深海海底的返回是一种衰减的爆发，代表着与海底的掠射角逐渐减小的散射。对哈特拉斯角和百慕大之间三个深水位置的射击记录进行分析，得出了海底在30°和90°之间的频率和角度范围内的后向散射强度。在30°至约65°的范围内，海底似乎表现为声音的扩散后向散射体;在65°至90°（垂直入射）之间，返回的增加可能代表来自海底倾斜平面或海底下沉积层的反射。在0.5和8.0 kc之间的几个频带中的分析表明，散射强度没有频率依赖性，这可能不是由于海洋中的冲击波衰减效应。系数同意与脉冲正弦声源。
The return by the deep ocean bottom of the sound produced by an explosive charge consists of a decaying burst representing scattering at successively decreasing grazing angles with the bottom. An analysis of shot records at three deep‐water locations between Cape Hatteras and Bermuda has yielded the backscattering strength of the sea bottom over a range of frequencies and angles between 30° and 90°. In the range 30° to about 65° the bottom appears to behave as a diffuse backscatterer of sound; between 65° and 90° (normal incidence) an increased return may represent reflection from inclined flat facets of the sea bed or from sub‐bottom sediment layers. Analyses in several frequency bands between 0.5 and 8.0 kc indicate no frequency dependence of the scattering strength that could not be due to shock‐wave attenuation effects in the sea. The coefficients agree with those obtained with pulsed sinusoidal sound sources.