论中国西北某些地区的高导电层及地震区划的深部电性指标.
ON THE CONDUCTIVE LAYERS IN SOME REGIONS OF NORTHWESTERN CHINA AND THE DEEP ELECTRICAL INDEXES FOR SEISMOLOGICAL ZONING
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摘要: 本文分析研究了中国西北某些地区地壳上地幔內的五类高导电层的分布及横向变化,探讨了其性质、成因及其与地震的关系。以中国南北地震带(北段)为例,探讨了圈划地震带轮廓的深部电性标志;分析了地壳上地幔电导率分布所揭示的地震活动深部物理环境的某些问题,尝试给出了地震带內地震危险区划分的几个深部电性指标,以及利用这些电性指标进行地震危险区划分的实施方法。Abstract: In this paper distributions and lateral changes of five kinds of conductive layers in the crust and upper mantle of Northwestern China are studied; their properties, origins and relations to earthquakes are discussed. Taking the northern portion of the North-South Seismic Belt of China as an example, the deep electrical indexes for delineating the contours of the seismic belt are discussed, and their roles in earthquake activity explained. Analysing some problems of the deep physical circumstance relative to earthquake activity, revealed by the conductivity distributions in the crust and upper mantle, the ability of various deep electrical parameters, as indexes for earthquake risk zoning is discussed; and a method for delineating regions of seismic risk using the above mentioned indexes is given.
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[1] 林长佑、张云琳,河西走廊地区下部地壳异常低阻层的发现,西北地震学报,1982,4,1,141——142,
[2] 林长佑、张云琳、粱恕信、司玉兰、蒋梅、江钊,内蒙、甘、宁某些地区地球上部电导率分布的横向变化特征,西北地震学报,1983,5,1,31——42,
[3] 国家地震局兰州地震大队大地电磁测深组,中国南北地震带北段地壳和上地慢的电性特征,地球物理学报,1976,19,28——34,
[4] 林长佑、张云琳、司玉兰、蒋梅、李柱国,河西走廊东部地区的大地电磁测深研究,地球物理学报,1984,27,131——143,
[5] E. P.波波夫,固体力学引论,王士耕、韩二丽译,165——188,1985,人民邮电出版社.
[6] 秦保燕、郭增建,由地震时震中区的显著下沉讨论震源的底部条件,西北地震学报,1979,1,1,8——15,
[7] 国家地震局兰州地震研究所大地电磁测深组,与大地震有关的地壳深部的电性变化,大地电磁测深,8 0——8 8 ,1981,地震出版社.
[8] 林长佑,大震孕震物理过程的初步探讨,西北地震学报,1979,1,3,42——48,
[9] 姚振兴、李白基、梁尚鸿、朱培定、张立敏、卢善声,青藏高原地区瑞利波群速度和地壳构造,地球物理学报,1981,24,287——295,
[10] Kurd., R. D., Magnetotelluric interpretation of crust al and mantle structure in the Grenvilleprovince, Geophys. J. R. Astr. Soc., 1982, 70, 373——397,
[11] Kern, H., Elestic——wave velocity in crust al and mantle rocks at high pressure and temperature:the role of the high——low quartz transition and of dehydration reaction, Phyr. Earth Planet. In t.,1982, 29, 12——23,
[12] 张少泉、武利均、郭建明等,中国西部地区门源——平凉——渭南地震测深剖面资料的分析解释,地球物理学报,1985,28,460——472.
[13] Lin Changyou, Phase transition dehydration—A possible way of interior source of the water in the focal region,西北地震学报,1964,6,1,64——92,
[14] Word, D. R., H. W. Smith, and F. X. Jr, Bostic, Crustal investigations Uy the magnetotelluric tensor impeuance method, The structure and physical properties of the earth's crust, Geophysical Monograph 14, 145——167, 1971 American geophysical Union, Washington, D. C.
[15] 林长佑,第八章地壳上地慢条件下岩石的导电性,大地电磁测深研究,301——341地震出版社,1985,
[16] 荣代潞,像力及其在震源过程中的作用,西北地震学报,1952,4,1,7——23,
[17] ELsasser, W. M., Sea——floor spreading as thermal convection, ,l. Grophys. Res., 1971, 76, 1101——1111,
[18] Stacey, F. D., Chapter 7, Physics of the Earth, John wiley a,:,l Sons, lnc., 1969,[1] 林长佑、张云琳,河西走廊地区下部地壳异常低阻层的发现,西北地震学报,1982,4,1,141——142,
[2] 林长佑、张云琳、粱恕信、司玉兰、蒋梅、江钊,内蒙、甘、宁某些地区地球上部电导率分布的横向变化特征,西北地震学报,1983,5,1,31——42,
[3] 国家地震局兰州地震大队大地电磁测深组,中国南北地震带北段地壳和上地慢的电性特征,地球物理学报,1976,19,28——34,
[4] 林长佑、张云琳、司玉兰、蒋梅、李柱国,河西走廊东部地区的大地电磁测深研究,地球物理学报,1984,27,131——143,
[5] E. P.波波夫,固体力学引论,王士耕、韩二丽译,165——188,1985,人民邮电出版社.
[6] 秦保燕、郭增建,由地震时震中区的显著下沉讨论震源的底部条件,西北地震学报,1979,1,1,8——15,
[7] 国家地震局兰州地震研究所大地电磁测深组,与大地震有关的地壳深部的电性变化,大地电磁测深,8 0——8 8 ,1981,地震出版社.
[8] 林长佑,大震孕震物理过程的初步探讨,西北地震学报,1979,1,3,42——48,
[9] 姚振兴、李白基、梁尚鸿、朱培定、张立敏、卢善声,青藏高原地区瑞利波群速度和地壳构造,地球物理学报,1981,24,287——295,
[10] Kurd., R. D., Magnetotelluric interpretation of crust al and mantle structure in the Grenvilleprovince, Geophys. J. R. Astr. Soc., 1982, 70, 373——397,
[11] Kern, H., Elestic——wave velocity in crust al and mantle rocks at high pressure and temperature:the role of the high——low quartz transition and of dehydration reaction, Phyr. Earth Planet. In t.,1982, 29, 12——23,
[12] 张少泉、武利均、郭建明等,中国西部地区门源——平凉——渭南地震测深剖面资料的分析解释,地球物理学报,1985,28,460——472.
[13] Lin Changyou, Phase transition dehydration—A possible way of interior source of the water in the focal region,西北地震学报,1964,6,1,64——92,
[14] Word, D. R., H. W. Smith, and F. X. Jr, Bostic, Crustal investigations Uy the magnetotelluric tensor impeuance method, The structure and physical properties of the earth's crust, Geophysical Monograph 14, 145——167, 1971 American geophysical Union, Washington, D. C.
[15] 林长佑,第八章地壳上地慢条件下岩石的导电性,大地电磁测深研究,301——341地震出版社,1985,
[16] 荣代潞,像力及其在震源过程中的作用,西北地震学报,1952,4,1,7——23,
[17] ELsasser, W. M., Sea——floor spreading as thermal convection, ,l. Grophys. Res., 1971, 76, 1101——1111,
[18] Stacey, F. D., Chapter 7, Physics of the Earth, John wiley a,:,l Sons, lnc., 1969,
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