| 苏鲁交界至南黄海地区应力场的动态变化与地震活动 |
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| 引用本文： | 周翠英,姜早峰,王红卫,董旭光,马玉香,房玉兰.苏鲁交界至南黄海地区应力场的动态变化与地震活动[J].东北地震研究,1994(1). |
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| 作者姓名： | 周翠英 姜早峰 王红卫 董旭光 马玉香 房玉兰 |
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| 作者单位： | 山东省地震局 |
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| 摘 要： | 利用地震记录的初至波符号使用格点尝试法处理了苏鲁交界至南黄海地震重点监视区及其分区１９６９－１９９１年８月逐时段滑动小震综合震源机制解，研究了该区应力场的基本特征及其动态变化与中强地震活动的关系．发现该区应力场总体特征与华北大区域应力场基本一致，但稳定性较差，可能存在一定的垂向作用．该区中强地震多发生在综合机制解Ｐ、Ｔ轴仰角增大时段，震前多表现为矛盾符号比高值异常．这一现象对今后该区中强地震预报具有现实意义．
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| 关 键 词： | 综合震源机制解，应力场 动态变化 地震活动性 |
DYNAMIC VARIATION OF STRESS FIELD AND SEISMIC ACTIVITY IN JUNCTURE AREA OF JIANGSU,SHANDONG AND SOUTH YELLOW SEA |
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| Zhou Cuiying Jiang Zaofeng Wang Hongwei Dong Xuguang Ma Yuxiang Fang Yulan.DYNAMIC VARIATION OF STRESS FIELD AND SEISMIC ACTIVITY IN JUNCTURE AREA OF JIANGSU,SHANDONG AND SOUTH YELLOW SEA[J].Seismological Research of Northeast China,1994(1). |
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| Authors: | Zhou Cuiying Jiang Zaofeng Wang Hongwei Dong Xuguang Ma Yuxiang Fang Yulan |
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| Abstract: | Based on the P wave first motion data of small earthquakes we have used thegrid testing method to get the mean composite mechanism solutions for the juncture area ofjiangsu, Shandong and South Yellow Sea from 1969 to 1991 with time interval slid-ing. According to these results,the basic feature of stress field in this region and the relation-ship between seismic activity and dynamic variations of stress field have been analysed. It has been fount that the overall feature of stress field in the region is basically consis-tent with that in North China,however stability is not bettr.These phenomena will be useful to moderate-strong earthquake prediction in this re-gion. |
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| Keywords: | Composite mechanism solution Stress filed Dynamic variation seismicity |
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