| 博阿断裂西段重复地震识别及断层深部滑移速率研究 |
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| 引用本文： | 高朝军,韩立波,蒋长胜,李志海.博阿断裂西段重复地震识别及断层深部滑移速率研究[J].地震学报,2017,39(3):307-314. |
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| 作者姓名： | 高朝军 韩立波 蒋长胜 李志海 |
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| 作者单位： | 1.中国乌鲁木齐 830011 新疆维吾尔自治区地震局 |
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| 基金项目： | 中国地震局“三结合”项目163103地震行业专项201408019-01中央级基本科研业务费DQJB15C10地震行业专项(201408019-01)、中国地震局“三结合”项目(163103) 和中央级基本科研业务费(DQJB15C10) 联合资助 |
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| 摘 要： | 本文选取博阿断裂西段周围30 km范围内2010年1月—2015年12月期间9个台站记录到的1272次地震事件的波形记录，利用波形互相关技术从中识别出65组(231次)重复地震，并且基于这些重复地震事件估算该断层的滑移速率.结果显示:该区域重复地震比例为18.2%；博阿断裂阿拉山口—精河段、精河—新源段的平均滑移速率分别约为0.99 mm/a和1.35 mm/a，乌苏—石场段、巴仑台—乌什城段的平均滑移速率分别为1.36 mm/a和2.03 mm/a，这与GPS观测结果基本一致；深部滑移速率的极大值分布在2—10 km深度范围内，其中巴仑台—乌什城段在8 km深度处达到了极大值8.6 mm/a.
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| 关 键 词： | 博阿断裂 波形互相关 重复地震 深部滑移速率 |
| 收稿时间： | 2016-11-30 |
Repeating earthquake identification and deep slip rates for western Bolokenu-Aqikekuduke fault |
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| Affiliation: | 1.Earthquake Administration of Xinjiang Uygur Autonomous Region, Xinjiang 830011, China2.Institute of Geophysics, China Earthquake Administration, Beijing 100081, China |
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| Abstract: | In this paper, the waveforms of 1272 earthquake events recorded by nine stations are selected in the western section of the Bolokenu-Aqikekuduke fault around 30 km during 2010-2015. Using cross-correlation analysis of waveforms, we identify 65 groups of repeating earthquakes. The results show that the repeating earthquakes make up 18.2% of total events. Furthermore, we obtain the average slip rate about 0.99 mm/a at the Alashankou-Jinghe section, 1.35 mm/a at the Jinghe-Xinyuan section, 1.36 mm/a at the Usu-Shichang section, and 2.03 mm/a at the Balguntay-Wushicheng section, which is consistent with GPS observations. The maximum deep slip rate appears at the depth ranging from 2 km to 10 km, and the Balguntay-Wushicheng section reaches a maximum of 8.6 mm/a at the depth of 8 km. |
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