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本文基于Nonlinear Progressive Equation (NPE方程)开展了对非均匀大气中次声波超视距传播特性的研究, 通过数值模拟实验对武汉上空四季次声波传播情况以及路径传输损耗进行了模拟, 获取了次声波在非均匀大气中的超视距传播特性. 计算结果表明, 非均匀大气的性质及其中存在的风对次声波传播有明显的影响, 平流层折射与风速和声波传播方向密切相关, 数值模拟结果表明, 当高斯声源主频为0.1 Hz时, 在不同的背景风场传播条件下, 存在着两个反射高度, 其中40 km 高度反射传输损耗约为25 dB, 110 km反射传输损耗约为50 dB.This paper explores the properties of over-the-horizon propagation of infrasonic wave in the inhomogeneous atmosphere using the nonlinear progressive equation (NPE). It has been calculated for propagation and path transmission loss of infrasonic wave all the year round in Wuhan. Results show that it is obviously influenced due to infrasonic wave propagation with properties of the inhomogeneous atmosphere and winds in the inhomogeneous atmosphere. Refraction in stratosphere is related to the speed of winds and propagation direction of infrasonic wave. The minimum propagation loss is achieved when the main frequency of gauss infrasonic wave source is 0.1Hz.
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Keywords:
- infrasonic wave /
- over-the-horizon propagation /
- inhomogeneous atmosphere /
- refraction in stratosphere
[1] Cox E F 1949 J. Acoust. Soc. Am. 21 501
[2] Zhao Z Y, Song Y, Lv J 2008 J. Wuhan Univ. (Nat. Sci. Edn.) 54 375 (in Chinese) [赵正予, 宋杨, 吕君 2008 武汉大学学报 (理学版) 54 375]
[3] Georges T M, Beasley W H 1977 J. Acoust. Soc. Am. 61 28
[4] Jones R M, Riley J P, Georges T M 1986 NOAA Report, Boulder Colo. USA
[5] West M, Gilbert K, Sack R 1992 Appl. Acoust. 37 31
[6] Groot-Heldlin C 2008 J. Acoust. Soc. Am. 124 1430
[7] L J, Zhao Z Y, Zhang Y N, Zhou C 2010 Acta Phys. Sin. 59 8662 (in Chinese) [吕君, 赵正予, 张援农, 周晨 2010 物理学报 59 8662]
[8] L J, Zhao Z Y, Zhou C, Zhang Y N 2011 Acta Phys. Sin. 60 084301 (in Chinese) [吕君, 赵正予, 周晨, 张援农 2011 物理学报 60 084301]
[9] L J, Zhao Z Y, Zhou C 2011 Acta Phys. Sin. 60 104301 (in Chinese) [吕君, 赵正予, 周晨 2011 物理学报 60 104301]
[10] Song Y, Zhou C, Zhang Y N, Zhao Z Y 2011 Chinese J. Geophys. 54 5733 (in Chinese) [宋杨, 周晨, 张援农, 赵正予 2011 地球物理学报 54 5733]
[11] McDonald B E, Kuperman W A 1987 J. Acoust. Soc. Am. 81 1406
[12] Castor K, Gerstoft P, Roux P, Kuperman W A 2004 J. Acoust. Soc. Am. 116 2004
[13] Too G P J, Ginsberg J H 1991 J. Acoust. Soc. Am. 91 59
[14] McDonald B E, Caine P, West M 1994 Appl. Acoust. 43 159
[15] Caine P, West M 1995 Appl. Acoust. 45 155
[16] Leissing T 2009 Nonlinear acoustic wave propagation in complex media: application to propagation over urban enviroments (Paris：University Paris-est)
[17] Qian Z W 2009 Nonlinear Acoustics (Beijing: Science Press) p33 (in Chinese) [钱祖文 2009 非线性声学 (北京: 科学出版社) 第33页]
[18] Bérenger J P 1994 J. Comp. Phys. 114 185
[19] Hedin A, Fleming E, Manson A, Scmidlin F, Avery S, Clark R, Frank S, Fraser G, Tsunda T, Vial F, Vincent R 1996 J. Atmos. Terr. Phys. 58 1421
[20] Picone J M, Hedin A E, Drob D P, Aiken A C 2002 J. Geophys. Res. 107 1468
[21] Yang X R, Chen Y 2007 Atmospheric Acoustics (Beijing: Science Press) (in Chinese) [杨训仁, 陈宇 2007 大气声学 (北京: 科学出版社)]
[22] Sutherland L C, Bass H E 2004 J. Acoust. Soc. Am. 115 1012
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[1] Cox E F 1949 J. Acoust. Soc. Am. 21 501
[2] Zhao Z Y, Song Y, Lv J 2008 J. Wuhan Univ. (Nat. Sci. Edn.) 54 375 (in Chinese) [赵正予, 宋杨, 吕君 2008 武汉大学学报 (理学版) 54 375]
[3] Georges T M, Beasley W H 1977 J. Acoust. Soc. Am. 61 28
[4] Jones R M, Riley J P, Georges T M 1986 NOAA Report, Boulder Colo. USA
[5] West M, Gilbert K, Sack R 1992 Appl. Acoust. 37 31
[6] Groot-Heldlin C 2008 J. Acoust. Soc. Am. 124 1430
[7] L J, Zhao Z Y, Zhang Y N, Zhou C 2010 Acta Phys. Sin. 59 8662 (in Chinese) [吕君, 赵正予, 张援农, 周晨 2010 物理学报 59 8662]
[8] L J, Zhao Z Y, Zhou C, Zhang Y N 2011 Acta Phys. Sin. 60 084301 (in Chinese) [吕君, 赵正予, 周晨, 张援农 2011 物理学报 60 084301]
[9] L J, Zhao Z Y, Zhou C 2011 Acta Phys. Sin. 60 104301 (in Chinese) [吕君, 赵正予, 周晨 2011 物理学报 60 104301]
[10] Song Y, Zhou C, Zhang Y N, Zhao Z Y 2011 Chinese J. Geophys. 54 5733 (in Chinese) [宋杨, 周晨, 张援农, 赵正予 2011 地球物理学报 54 5733]
[11] McDonald B E, Kuperman W A 1987 J. Acoust. Soc. Am. 81 1406
[12] Castor K, Gerstoft P, Roux P, Kuperman W A 2004 J. Acoust. Soc. Am. 116 2004
[13] Too G P J, Ginsberg J H 1991 J. Acoust. Soc. Am. 91 59
[14] McDonald B E, Caine P, West M 1994 Appl. Acoust. 43 159
[15] Caine P, West M 1995 Appl. Acoust. 45 155
[16] Leissing T 2009 Nonlinear acoustic wave propagation in complex media: application to propagation over urban enviroments (Paris：University Paris-est)
[17] Qian Z W 2009 Nonlinear Acoustics (Beijing: Science Press) p33 (in Chinese) [钱祖文 2009 非线性声学 (北京: 科学出版社) 第33页]
[18] Bérenger J P 1994 J. Comp. Phys. 114 185
[19] Hedin A, Fleming E, Manson A, Scmidlin F, Avery S, Clark R, Frank S, Fraser G, Tsunda T, Vial F, Vincent R 1996 J. Atmos. Terr. Phys. 58 1421
[20] Picone J M, Hedin A E, Drob D P, Aiken A C 2002 J. Geophys. Res. 107 1468
[21] Yang X R, Chen Y 2007 Atmospheric Acoustics (Beijing: Science Press) (in Chinese) [杨训仁, 陈宇 2007 大气声学 (北京: 科学出版社)]
[22] Sutherland L C, Bass H E 2004 J. Acoust. Soc. Am. 115 1012
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