| 阿尔金断裂带中东段地震活动特征及危险性讨论 |
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| 引用本文： | 马玉虎,马辉青.阿尔金断裂带中东段地震活动特征及危险性讨论[J].高原地震,2014(2):1-6. |
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| 作者姓名： | 马玉虎 马辉青 |
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| 作者单位： | 青海省地震局,青海西宁810001 |
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| 基金项目： | 中国地震局监测预报司专项“中国大陆7-8级地震中长期预测研究”和“2012年全国地震形势跟踪”项目（1012600106）联合资助. |
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| 摘 要： | 讨论了阿尔金断裂带1900年以来的5级以上地震活动,结果显示空间上地震活动具有分段性,其中在青海段出现5级地震填空性空段,并形成5级地震的平静区,时间上具有平静和活跃交替的特征。进一步分析阿尔金断裂带青海段(茫崖北—肃北)现代小震活动,结果显示:茫崖以西震源深度约40 km以内,青海段(茫崖北—肃北)震源深度约10 km范围内,超过10 km较少,肃北—黑崖子以东约100 km处震源深度由浅逐渐变深,从10 km左右逐渐变化到40 km左右。与此同时,依据上述资料探讨了阿尔金断裂带青海段的强震危险性。
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| 关 键 词： | 阿尔金断裂带 阿尔金断裂带青海段 地震活动 现代小震活动 强震危险性 |
DISCUSSION ON EARTHQUAKE RISK AND CHARACTERISTICS OF SEISMIC ACTIVITY IN THE MIDDLE-EAST SECTION ALONG THE ALKIN FAULT ZONE |
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| MA Yuhu,MA Huiqing.DISCUSSION ON EARTHQUAKE RISK AND CHARACTERISTICS OF SEISMIC ACTIVITY IN THE MIDDLE-EAST SECTION ALONG THE ALKIN FAULT ZONE[J].Plateau Earthquake Research,2014(2):1-6. |
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| Authors: | MA Yuhu MA Huiqing |
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| Institution: | ( Earthquake Administration of Qinghai Province, Xining 810001, China) |
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| Abstract: | This seismic activity of the Ms ≥5.0 earthquakes in the Alkin fault zone since 1900 is discussed, the results show the spatial characteristic is segmentation, and five quiet gaps of Ms5 earthquakes in Qinghai section with the characteristics of quiet and active in time sequence. The modem activity of small earthquakes in Qinghai section （North of Mang＇ ai-Subei） in the Alkin fault zone is analyzed, the results show that the small earthquake focal depth in Mang＇ ai west is about 40 km, and focal depth in Qinghai section （North of Mang＇ ai-Subei） is about 10 km and less than 10 km, and the focal depth of Subei-Black cliffs east from about 10 km to 40 kin. At the same time, the strong earthquake risk in Qinghai section is analyzed by the data of the Alkin fault zone. |
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| Keywords: | Alkin fault zone Qinghai section in the Alkin fault zone Seismic activity Modern activity of small earthquake Strong earthquake risk |
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