海水的非线性声学参量B／A的研究  

Study of acoustic nonlinearity parameter B/A for sea water

作　　者：鲁志劬[1] 龚秀芬[1] 王玉琴[1] 

机构地区：[1]南京大学声学研究所,南京大学近代声学实验室

出　　处：《声学学报》1995年第6期432-436,共5页Acta Acustica

摘　　要：本文对不同盐度、不同温度下的ＮａＣｌ溶液及按Ｌｙｍａｎ—Ｆｌｅｍｉｎｇ配方配制的人造海水的非线性声学参量Ｂ／Ａ进行了测量，并与文献中的计算值进行比较。结果表明，ＮａＣｌ溶液的Ｂ／Ａ值随温度的增加而线性增加，随盐度的增加略有增加，人造海水的Ｂ／Ａ值随温度的增加而线性增加，相同盐度的ＮａＣｌ溶液的Ｂ／Ａ的测量值与文献中的计算值基本相符，ＮａＣｌ溶液可近似模拟同样盐度的海水。The B / A values of NaCl solution and artificial sea water (prepared by Lyman-Fleming formula)with different salinities and different temperatures have been measured and compared with the calculated B / A values in literature. The results show that the B / A values of NaCl solution increase linearly with increasing temperature, and increase slightly with increasing salinity; the B / A values of artificial sea water increase as temperature increases . The results indicate satisfactory agreement with those values obtained in literature, NaCl solution can be used to simulate sea water approximately.

关 键 词：海水 超声 传播 参量 非线性声学 

分 类 号：P733.21[天文地球—物理海洋学]