王雅灵. 天津咸水层水动态映震特征剖析[J]. 华北地震科学, 1988, 6(2): 7-16.
引用本文: 王雅灵. 天津咸水层水动态映震特征剖析[J]. 华北地震科学, 1988, 6(2): 7-16.
Wang Yialing. THE ANALYSIS FOii THE PRECURSORY EFFECT CHARACTERISTICS OF WATER DYNAMIC VARIATION IN THE SALT WATER LAYER IN TIANJIN[J]. North China Earthquake Sciences, 1988, 6(2): 7-16.
Citation: Wang Yialing. THE ANALYSIS FOii THE PRECURSORY EFFECT CHARACTERISTICS OF WATER DYNAMIC VARIATION IN THE SALT WATER LAYER IN TIANJIN[J]. North China Earthquake Sciences, 1988, 6(2): 7-16.

天津咸水层水动态映震特征剖析

THE ANALYSIS FOii THE PRECURSORY EFFECT CHARACTERISTICS OF WATER DYNAMIC VARIATION IN THE SALT WATER LAYER IN TIANJIN

  • 摘要: 本文首先概述了唐山地震孕发过程中,天津咸水位在映震前期不同速度下降异常、临震反向回升、震时剧烈上升的映震特征。其后,利用咸水层的测试与观测资料,说明咸水层具有良好的封闭性,是造成咸水位震兆性变化的结构条件;咸水层的分布紧邻唐山震源体外围西南侧,是造成咸水位震兆性变化的受力条件。又通过实际观测资料对比与计算得出,咸水层具有反映微弱、短暂应力变化的显示能力,其引起的咸水位变化量级小,形态特殊,不足以影响咸水位震兆的判别,却引证了在中强以上地震的孕震构造力作用下,必然要产生咸水位的升降变化。文末综合简述了咸水位震兆特征的映震过程。

     

    Abstract: The precursory effect characteristics of the salt water level in the developing process of the Tangshan earthquake, such as anomalous drop with Hie different ratio in the early period, the inverse rise in imminent stage and the sharp rise in the coseismic period, have been described. However, according to the measuremnt and observation data in the salt water layer, it is shown that the salt layer has a good confining property which is the structure condition for causing the precursor change in the salt water level and the distribution of the salt water layer closely near the southwestern side of the Tangshan earthquake source zonc is the forced condition which causes the precursory change of salt water level. By the comparision among the actural observartion data and computed results, the salt water layer can reflect the micro- and shorl-strees variation, by which the caused change ia salt waierl level is particular in sharp and too small to affect the identification for the precursor phenomena of the salt water level. Inversely, it is quoted that the rise and drop variations in the salt water level must be resulted in under the tectonic force in the developing process of the moderate strong earthquake, Finally, the premonitory process of the salt wafer level has been described.

     

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