| 月亮山东麓断裂古地震活动的初步研究 |
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| 引用本文： | 闵伟,张淑萍.月亮山东麓断裂古地震活动的初步研究[J].西北地震学报,2001,23(1):36-40. |
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| 作者姓名： | 闵伟 张淑萍 |
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| 作者单位： | 中国地震局地质研究所, |
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| 基金项目： | 地震科学联合基金资助项目(9507421)；国家重点基础研究发展规划项目(95-13-01-04) |
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| 摘 要： | 月亮山东麓断裂位于海原断裂带的东段。1920年海原大地震时该断裂也发生了破裂。对该段断裂的古地震活动特征的初步研究表明，全新世以来，月亮山东断裂可能发生过5次破裂事件，主要分布在全新世的早期和末期。海原断裂带具有分段破裂的特征，因此需要对照整个断裂带的古地震活动特征，才能确定月亮山东断裂是一个独立的破裂单元还是其他段落破裂的影响段。
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| 关 键 词： | 宁夏 海原断裂带 古地震 月亮山断裂 |
| 文章编号： | 1000-0844(2001)01-0036-04 |
| 收稿时间： | 2000/1/18 0:00:00 |
| 修稿时间： | 2000年1月18日 |
A PRELIMINARY STUDY ON PALAEOEARTHQUAKES OF YUELIANGSHAN FAULTS |
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| MIN Wei and ZHANG Shu-ping.A PRELIMINARY STUDY ON PALAEOEARTHQUAKES OF YUELIANGSHAN FAULTS[J].Northwestern Seismological Journal,2001,23(1):36-40. |
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| Authors: | MIN Wei and ZHANG Shu-ping |
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| Institution: | Institute of Geology, CSB, Beijing 100029, China and Institute of Geology, CSB, Beijing 100029, China |
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| Abstract: | Yueliangshan fault is the east segment of Haiyuan fault zone.Thefault had ruptured during the Haiyuan MS8.5 earthquake in 1920.The recurrence behavior of palaeoearthquakes haven't been studied on the Yueliangshan fault.The preliminary study shows that there may be five palaeoearthquakes to occur on the fault at the early and late Holocene.The Haiyuan fault zone has the property of grade rupture. After studying the palaeoearthquake recurrence behavior of the whole fault zone, it is possible to determine whether the Yueliangshan fault is an independent rupture segment or a secondary segment influenced by other rupture segment. |
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| Keywords: | Ningxia Haiyuan fault zone Palaeoearthquake Yueliangshan fault |
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