| 1556年1月23日关中大地震 |
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| 引用本文： | 郭增建.1556年1月23日关中大地震[J].地球物理学报,1957,6(1):59-68. |
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| 作者姓名： | 郭增建 |
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| 作者单位： | 中国科学院地球物理研究所 |
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| 摘 要： | 一、引言 1556年1月23日关中大地震是我国历史上最大的地震之一,震中区在渭河下游的渭南、华县、华阴、潼关和山西的蒲州一带,波及陕西、甘肃、山西、河南、河北、山东和湖北等省。据明实录记载,这次地震“压死官吏军民奏报有名者八十二万有奇”。虽然
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| 关 键 词： | 地震活动性 大地震 地震波 渭河下游 渭河流域 秦岭南坡 秦岭北坡 震中区 破坏性地震 地球物理学 |
ON THE SHENSI EARTHQUAKE OF JANUARY 23, 1556. |
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| KUO TSENG-CHIEN.ON THE SHENSI EARTHQUAKE OF JANUARY 23, 1556.[J].Chinese Journal of Geophysics,1957,6(1):59-68. |
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| Authors: | KUO TSENG-CHIEN |
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| Institution: | Institute of Geophysics and Meteorology, Academia Sinica |
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| Abstract: | The discussion of one of the greatest earthquakes in Chinese history are made possible by the recent publication of a very complete catalogue of Chinese historical earthquakes by the Institute of History,Academia Sinica. This earthquake, which was reported to have caused the loss of more than eight hundred thousand lives, has an epicentral intensity near to 12 degrees. The shock was felt over an area of more than one million square kilometers. The depth of focus is estimated to be 38-45 km from the radius ro of perceptible area and 10. The isoseismal lines are quite eccentric and they indicate a fault striking EEN and dipping to the Wei-ho Valley. Foreshocks, aftershoeks, earthquake sound and optical phenomenon in connection with this earthquake are also discussed briefly. The historical seismicity of the Wei-ho Valley area is also discussed. It appears that the time distribution of earthquake occurrences in this area is not uniform. The seismicity intensifies cyclically in every 6 or 7 hundred years. The 16th century is by far the most active period and from the trend of variation of the intensity, the present seems to be a time of declining activity. The space distribution of seismieity in this area is also not uniform. On the east of 108.8°E, the seismicity is stronger than that on the west. On the south of Chin-ling the seismicity is much weaker than that on its north. |
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