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地震

地震 ›› 2002, Vol. 22 ›› Issue (1): 9-16.

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青藏高原东北隅强震构造模型

田勤俭, 丁国瑜, 申旭辉   

  1. 中国地震局分析预报中心,北京 100036
  • 收稿日期:2001-04-26 修回日期:2001-07-03 出版日期:2002-01-31 发布日期:2021-12-21
  • 作者简介:田勤俭(1966-),男,河北徐水人,副研究员,1998年获博士学位,主要从事地震构造等研究。
  • 基金资助:
    国家重点基础研究项目(G199804070102); 国家自然科学基金项目(49732095); 地震联合基金项目(95-07-422)

Seismic tectonic model of the northeastern corner of the Tibet Plateau

TIAN Qin-jian, DING Guo-yu, SHEN Xu-hui   

  1. Center for Analysis and Prediction, CSB, Beijing 100036, China
  • Received:2001-04-26 Revised:2001-07-03 Online:2002-01-31 Published:2021-12-21

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摘要： 海原断裂带和中卫-同心断裂带是青藏高原东北隅二条主要断裂带。通过区域地质、地貌分析和二条断裂带的结构、活动历史的对比研究,建立了该区走滑和挤压活动的应变分配模型。通过对主要断裂带破裂分段的研究,确定了该区的强震破裂单元。应变分配和破裂分段是建立地震构造模型的二个方面。

关键词: 地震构造, 应变分配, 破裂分段, 海原断裂带

Abstract: The Haiyuan fault zone and the Zhongwei-Tongxin fault zone are main faults in the northeastern corner of the Tibet Plateau. Basedon analysis of geology and geomor-phology of the region and study on structure and revolution of the two faults, a strain par-tition model is built to adjust the strike slipping and com pressional deformation of the area. Through rupture segmentation study along main faults, rupture units of large earth-quakes are also identified in the region. The seismic tectonic model of the region consists of strain partitioning and fault segmentation.

Key words: Seismic tectonics, Strain partitioning, Fault segmentation, Haiyuan fault

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