Investigation on Strain Characteristics of Main Fault Zone in Yunan Area Based on Cross-fault Deformation Data
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摘要: 利用1982-2009年云南地区跨断层短基线观测资料,采用应变分析方法得到云南地区断裂带的应变特征,并探讨了云南地区断裂带应变变化与地震活动的关系。本次工作求解了断裂在各测点处的走滑速率。结果显示,楚雄-通海断裂带的应变量值高于剑川-丽江断裂带,云南地区主要断裂带对于本区域内的大地震的应变响应有一定的一致性。Abstract: Using cross-fault baseline observation data during 1982~2009 in Yunnan area, this paper analyzes the strain characteristics of main fault zone in Yunnan area, investigates the relationship between strain changing of fault zone and seismic activity, calculates the fault slip rate at each measuring site.The results show that the strain value of the Chuxiong-Tonghai fault zone is higher than that of the Jianchuan-Lijiang fault zone, which indicates that the impact of the main fault strain on the regional earthquake in Yunnan area has certain consistency.
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Key words:
- cross-fault baseline /
- strain /
- seismic activity
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