十年震兆十年活动之后的思考
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摘要
根据1900年以来的地震活动资料,从整体活动的观点出发,对30多a的地震活动演变特点研究后,认为1966年到1976年华北地区发生的4次Ms≥7.0地震是一组时间相随有序、空间成带有节而且相互关连的一个大系统的整体链式大活动。并由此而提出了对今后地震活动的粗浅看法,认为由邢台、渤海、海城、唐山4大地震围限的主活动区在今后一个相当长的时期内难于重复同级大地震,而且受影响所及的山西地震带、华北块体北缘的阴山—燕山等地的一些“衍射活动”也将随大区的演变逐渐成为华北的常态活动,今后Ms6.0左右的地震活动将被视为本区的高峰活动
Starting with the viewpoint of the overall seismicity,it is showed that the 4 earthquakes with Ms≥7 0 from 1966 to 1976 in North China are the overall chain activity in a major system with the successive order in time and the zonal and segmental relation in space based on the seismicity data since 1900.A superficial view was proposed from this,it was showed that there will be difficult to reoccur the same magnitude earthquakes in the active region of main body bounded by the 4 earthquakes at Xingtai,Bohai,Haicheng and Tangshan.And some“diffraction seismicity” in Shanxi seismic belt and Yinshan-Yanshan seismic belt will develop the common activity in North China,the earthquake activity with Ms6 0 in future will be seen as the peak activity in the region.
引文
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