| 长岛附近地区小震精定位及地震趋势分析 |
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| 引用本文： | 李亚军,李永红,胡旭辉,许萍,李瑞红,石玉燕.长岛附近地区小震精定位及地震趋势分析[J].华北地震科学,2008,26(2):22-26. |
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| 作者姓名： | 李亚军 李永红 胡旭辉 许萍 李瑞红 石玉燕 |
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| 作者单位： | 1. 山东省地震局,山东,济南,250014
2. 呼伦贝尔市地震局,内蒙古,呼伦贝尔,021008 |
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| 基金项目： | 山东省自然科学基金，地震科学联合基金 |
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| 摘 要： | 对长岛附近地区（N35．8°～38．7°，E119．4°～122．9°）2000年以来数字记录的中小地震进行了双差定位，对重新定位结果的时空特征进行分析。发现双差定位后的地震与断层关系更为密切；中小地震深度具有分区差异，长岛附近较浅（平均6km），1548年7级震源区附近较深（平均13km）。结合长岛附近地区中等地震活动特点和地震活动性参数时序变化，综合分析长岛附近地区的地震趋势。
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| 关 键 词： | 地震趋势 双差定位 长岛附近地区 |
Fine positioning for the small earthquakes near Changdao area and analysis of earthquake tendency |
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| LI Ya-jun,LI Yong-hong,HU Xu-hui,XU Ping,LI Rui-hong,SHI Yu-yan.Fine positioning for the small earthquakes near Changdao area and analysis of earthquake tendency[J].North China Earthquake Sciences,2008,26(2):22-26. |
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| Authors: | LI Ya-jun LI Yong-hong HU Xu-hui XU Ping LI Rui-hong SHI Yu-yan |
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| Institution: | LI Ya-jun, LI Yong-hong, HU Xu-hui, XU Ping, LI Rui-hong, SHI Yu-yan (1.Earthquake Administration of Shandong province, Jinan 250014, China; 2. Earthquake Administration of Hulunbeier city, Hulunbeier 021008, Inner Mongolia Autonomous Region, China) |
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| Abstract: | The moderate and small earthquakes in Chang Dao area （35.8°-38.7 N°, 119.4°- 122.9°E） since 2000 are relocated with double difference method. Through analysis to the results, we find that the relocated earthquakes are relevant much closer with faults. The depth of moderate and small earthquakes have regional dif- ference, which is shallower near Changdao （6km in average）, but is deeper near the source region of Ms7 event in 1548 （13km in average）. Combined with seismicity, the earthquake tendency of Changdao area is analyzed. |
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| Keywords: | earthquake tendency double difference location area near Changdao |
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