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雷声在大气中传播的吸收衰减特性研究

张景川 袁萍 欧阳玉花

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雷声在大气中传播的吸收衰减特性研究

张景川, 袁萍, 欧阳玉花

Characteristics of absorption and attenuation of thunder propagating in atmosphere

Ouyang Yu-Hua, Yuan Ping, Zhang Jing-Chuan
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  • 选取青海大通地区一次地闪过程的雷声信号,利用信号处理理论,得到了观测点雷声的频谱;依据声波在大气中传播的理论,计算了大气对雷声传播的吸声系数,分析了吸声系数随环境因素的变化,结果表明:闪电发生距离、大气湿度和温度是影响雷声传播的主要因素.在一定闪电距离和大气环境下,吸声系数随频率的增加而增大;频率小于100 Hz的雷声衰减很慢,空气相对湿度和温度对其吸声系数的影响也比较小,在一定距离内的衰减可以忽略;频率大于500 Hz的高频信号吸声系数较大,并且随相对湿度的增加而快速递增;吸声系数随温度呈非单调变化,频
    Using the thunder signals of a C-G lightning process recorded in the Qinghai region and the theory of signal processing, the frequency spectrum of thunder at observation point is obtained; Based on the propagation theory of acoustic waves, the absorption coefficients in air are calculated and their variations with environmental factors are analyzed. The results show that under a certain profpagation distance and environmental condition, the absorption coefficient increases with frequency increasing. The attenuation of signal below 100Hz is negligible under a certain propagation distance and environmental factors. The attenuations for high-frequency signals of more than 500 Hz are large, their absorption coefficients increase rapidly with the relative humidity inereasing and vary nor-monotonical with temperature. It is deduced that high frequency components of more than 500Hz should be contained in the thunder source.
    • 基金项目: 国家自然科学基金(批准号:40475007),西北师范大学科技创新工程项目(批准号: NWNU -KJCXGC-03-21)资助的课题.
    [1]

    Uman M A 2001 The Lightning Discharge ( New york: Dover )p377

    [2]

    Few A A 1968 Thunder Ph.D. Dissertation (Texas: Rice university)p26

    [3]

    Bhartendu H 1968 Can.J.Phys.46 269

    [4]

    Few A A 1969 J.geophys.Res.74 6926

    [5]

    Holmes C R, Brook M 1971 J.geophys.Res.76 2106

    [6]

    Remillard W J 1960 The acoustics of thunder (Cambridge: Havard University)p387

    [7]

    Harris C M 1967 Absorption of sound in air versus humidity and temperature NASA Report CR-647 (New york: Columbia University)p34

    [8]

    Bass H E, Losely R E 1975 J.Acoustsoc.Am.57 822

    [9]

    Few A A 1982 Acoustic radiations from lightning. In Handbook of Atmospherics,ed. H.Volland, vol.Ⅱ(Boca Raton, Florida: CRC Press )p257

    [10]

    Few A A 1995 Acoustic radiations from lightning. In Handbook of Atmospherics ,ed. H. Volland,vol.Ⅱ (Boca Raton, Florida: CRC Press)p11

    [11]

    Yang X R 2007 Atmospheric Acoustics (Beijing: Science Press)p120 (in Chinese) [杨训仁 2007 大气声学(北京:科学出版社)第120页]

    [12]

    Ma D Y, Shen H 1983 Acoustics Handbook (Beijing: Science Press)p113 (in Chinese) [马大猷、沈 壕1983 声学手册(北京:科学出版社)第113页]

    [13]

    Shen X Z, Yuan P 2007 Acta Phys.Sin.56 5715(in Chinese) [申晓志、袁 萍 2007物理学报 56 5715]

    [14]

    Evans L B, Sutherland L C 1970 Wyle Rep. N o. WR 70-14.for U.S. Army Res. Off 1 14

    [15]

    Monk R 1969 J.Acoust.soc.Amer. 46 580

    [16]

    Evans L B 1972 Acoust.soc. Amer. 51 409

    [17]

    Yuan P, OuYang Y H, Lv S H 2006 Plateau Meteorology 25 503(in Chinese) [袁 萍、欧阳玉花、吕世华 2006 高原气象 25 503]

    [18]

    Depass P 1994 J. Geophys. Res. 99 25 933

    [19]

    Hao Z Q, YU J, Zhang J, Yuan X H 2005 Acta Phys.Sin.54 1290 (in Chinese) [郝作强、俞 进、张 杰、远晓辉 2005 物理学报 54 1290]

  • [1]

    Uman M A 2001 The Lightning Discharge ( New york: Dover )p377

    [2]

    Few A A 1968 Thunder Ph.D. Dissertation (Texas: Rice university)p26

    [3]

    Bhartendu H 1968 Can.J.Phys.46 269

    [4]

    Few A A 1969 J.geophys.Res.74 6926

    [5]

    Holmes C R, Brook M 1971 J.geophys.Res.76 2106

    [6]

    Remillard W J 1960 The acoustics of thunder (Cambridge: Havard University)p387

    [7]

    Harris C M 1967 Absorption of sound in air versus humidity and temperature NASA Report CR-647 (New york: Columbia University)p34

    [8]

    Bass H E, Losely R E 1975 J.Acoustsoc.Am.57 822

    [9]

    Few A A 1982 Acoustic radiations from lightning. In Handbook of Atmospherics,ed. H.Volland, vol.Ⅱ(Boca Raton, Florida: CRC Press )p257

    [10]

    Few A A 1995 Acoustic radiations from lightning. In Handbook of Atmospherics ,ed. H. Volland,vol.Ⅱ (Boca Raton, Florida: CRC Press)p11

    [11]

    Yang X R 2007 Atmospheric Acoustics (Beijing: Science Press)p120 (in Chinese) [杨训仁 2007 大气声学(北京:科学出版社)第120页]

    [12]

    Ma D Y, Shen H 1983 Acoustics Handbook (Beijing: Science Press)p113 (in Chinese) [马大猷、沈 壕1983 声学手册(北京:科学出版社)第113页]

    [13]

    Shen X Z, Yuan P 2007 Acta Phys.Sin.56 5715(in Chinese) [申晓志、袁 萍 2007物理学报 56 5715]

    [14]

    Evans L B, Sutherland L C 1970 Wyle Rep. N o. WR 70-14.for U.S. Army Res. Off 1 14

    [15]

    Monk R 1969 J.Acoust.soc.Amer. 46 580

    [16]

    Evans L B 1972 Acoust.soc. Amer. 51 409

    [17]

    Yuan P, OuYang Y H, Lv S H 2006 Plateau Meteorology 25 503(in Chinese) [袁 萍、欧阳玉花、吕世华 2006 高原气象 25 503]

    [18]

    Depass P 1994 J. Geophys. Res. 99 25 933

    [19]

    Hao Z Q, YU J, Zhang J, Yuan X H 2005 Acta Phys.Sin.54 1290 (in Chinese) [郝作强、俞 进、张 杰、远晓辉 2005 物理学报 54 1290]

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  • 被引次数: 0
出版历程
  • 收稿日期:  2009-03-31
  • 修回日期:  2010-02-18
  • 刊出日期:  2010-11-15

雷声在大气中传播的吸收衰减特性研究

  • 1. (1)西北师范大学物理与电子工程学院,兰州 730070; (2)西北师范大学物理与电子工程学院,兰州 730070;兰州交通大学数理与软件工程学院,兰州 730070; (3)西北师范大学物理与电子工程学院,兰州 730070;塔里木大学机械电气化工程学院,阿拉尔 843300
    基金项目: 国家自然科学基金(批准号:40475007),西北师范大学科技创新工程项目(批准号: NWNU -KJCXGC-03-21)资助的课题.

摘要: 选取青海大通地区一次地闪过程的雷声信号,利用信号处理理论,得到了观测点雷声的频谱;依据声波在大气中传播的理论,计算了大气对雷声传播的吸声系数,分析了吸声系数随环境因素的变化,结果表明:闪电发生距离、大气湿度和温度是影响雷声传播的主要因素.在一定闪电距离和大气环境下,吸声系数随频率的增加而增大;频率小于100 Hz的雷声衰减很慢,空气相对湿度和温度对其吸声系数的影响也比较小,在一定距离内的衰减可以忽略;频率大于500 Hz的高频信号吸声系数较大,并且随相对湿度的增加而快速递增;吸声系数随温度呈非单调变化,频

English Abstract

参考文献 (19)

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