Acoustical method for measuring the gas content in bottom sediments

被引：6
|
作者：
Komissarova, NN [1 ]
Furduev, AV [1 ]
机构：
[1] Russian Acad Sci, NN Andreev Acoust Inst, Moscow 117036, Russia
来源：
ACOUSTICAL PHYSICS | 2004年 / 50卷 / 05期
基金：
俄罗斯基础研究基金会;
关键词：
D O I：
10.1134/1.1797462
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
Gas bubbles in the bottom of shallow-water seas and freshwater basins lead to a substantial decrease in the sound speed. The gas content in the bottom changes because of the variability of the biological activity and water contamination, therefore serving as an indicator of the environmental equilibrium in the basin. It is proposed to monitor the gas content in bottom sediments by measuring the frequency spectrum of the bottom reflection coefficient in a broad frequency band. The data of calculations are presented for the sound speed in gas-containing sediments and for the values of the bottom reflection coefficient. A method is proposed for monitoring the gas content by measuring the frequency and angular characteristics of the natural ambient noise. (C) 2004 MAIK "Nauka/Interperiodica".
引用
收藏
页码：571 / 574
页数：4
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