地震电磁波发射的一种机制
THE MECHANISM OF ELECTROMAGNETIC WAVE RADIATION DURING AN EARTHQUAKE
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摘要: 本文介绍用天然石英岩块等所进行的电磁波发射实验.得到了频段范围和强度.提出岩层突然破裂和断层两侧岩石剧烈摩擦是产生地震电磁波的一种重要机制,其机理是石英晶体破碎时,电偶极子群的产生和消失.Abstract: By using small natural rocks and some artificial crystals as samples we observed the electromagnetic waves which radiated during collision,friction or breaking. The experiments were well repeatable anywhere at any time without any screen. The radiation-spectrum of tens of kHz-500 kHz was obtained by using a frequency analyzer in the course of collision of two pieces of quartz. Experimental results showed that the impulses clustered within 200 kHz and the singnals of about 100 kHz were densest and strongest. The electric field strength at a point about 10 cm from the quartz could be as large as 69.8 mv/m,and the background strength about 14.5 mv/m. The fiels strength for quartzite was larger than that of granite by two orders of magnitude,and the field strength of quartz was larger than that of quartzite by the same .orders of magnitude. The rediation strength of rock depended evidently on the contents of quartzite. We found that crystal sugar,alum and ruby may radiate electromagnetic waves when they were breaking. The field intensity of waves radiated by a small sugar crystal at a distance 10 cm was 19 mv/m which could compare with that of quartzite. Even white quartzite sand may emit observable radiation. The smallest volume of fragment quartz which can radiate measurable electromagnetic waves is about 0.1 mm3.
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[1] 《一九七六年唐山地震》编辑组,1982.一九七六年唐山地震,339——352.地震出版社.
[2] B.Ф.萨瓦连斯基主编,1980.地震前兆探索,20——21,地震出版社.
[3] 李均之、曹明、夏雅琴、毛浦森,1982岩石压缩试验与震前电磁波辐射的研究.北京工业大学学报,4,47——53.
[4] 徐为民、童芜生,1983.安徽省地震局进行电磁波辐射实验取得一些结果(简讯).国际地震动态,2: 32,
[5] 徐为民、童芜生、王自成,1984.单轴压缩下岩样破坏过程中的发光现象.地震,1: 8——10,
[6] 郑联达,1986.地震发光成因的一种新假设.光学学报,8,763——769,
[7] 戈赫贝尔格(М.Ъ.Гохбер), 1981.地震活动的高频电磁辐射.国外地震,4: 64,
[8] D.哈里德、R.瑞斯尼克,1979,物理学,二卷一册,396——397.科学出版社.
[9] 徐为民、昊培稚,1983.人工地震的电磁效应.地震,1: 29——31,
[10] Mykura, H.,黄宗洋译,1973,固体表面和界面,台湾中华书局.
[11] Jenkins, F. A., White, H. E.,清华大学物理系译,1953.物理光学基础,399,414,商务印书局.
[12] Jenkins, F. A., White, H. E.,清华大学物理系译,1953.物理光学基础,253——256,商务印书馆.
[13] F. S.克劳福德,1981.伯克利物理教程波动学,三卷下册,431——442,科学出版社.[1] 《一九七六年唐山地震》编辑组,1982.一九七六年唐山地震,339——352.地震出版社.
[2] B.Ф.萨瓦连斯基主编,1980.地震前兆探索,20——21,地震出版社.
[3] 李均之、曹明、夏雅琴、毛浦森,1982岩石压缩试验与震前电磁波辐射的研究.北京工业大学学报,4,47——53.
[4] 徐为民、童芜生,1983.安徽省地震局进行电磁波辐射实验取得一些结果(简讯).国际地震动态,2: 32,
[5] 徐为民、童芜生、王自成,1984.单轴压缩下岩样破坏过程中的发光现象.地震,1: 8——10,
[6] 郑联达,1986.地震发光成因的一种新假设.光学学报,8,763——769,
[7] 戈赫贝尔格(М.Ъ.Гохбер), 1981.地震活动的高频电磁辐射.国外地震,4: 64,
[8] D.哈里德、R.瑞斯尼克,1979,物理学,二卷一册,396——397.科学出版社.
[9] 徐为民、昊培稚,1983.人工地震的电磁效应.地震,1: 29——31,
[10] Mykura, H.,黄宗洋译,1973,固体表面和界面,台湾中华书局.
[11] Jenkins, F. A., White, H. E.,清华大学物理系译,1953.物理光学基础,399,414,商务印书局.
[12] Jenkins, F. A., White, H. E.,清华大学物理系译,1953.物理光学基础,253——256,商务印书馆.
[13] F. S.克劳福德,1981.伯克利物理教程波动学,三卷下册,431——442,科学出版社.
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