芦山M_S7.0级地震与龙门山断裂带的活动性

2013年4月20日四川省芦山县发生了MS7.0级强烈地震,该地震的发生与龙门山断裂带的活动有直接关系。通过研究龙门山断裂带及周边区域的形变监测资料,得出：龙门山断裂带的活动趋势取决于巴颜喀拉块体与四川盆地的相对运动,而其运动的主要动力来自青藏高原和上扬子克拉通地块的推挤。结合发震区域地质构造和地壳形变观测数据分析结果,论述此次地震与龙门山断裂带的活动关系,并提出未来5年重点监视区域。

The MS7.0 Lushan Earthquake and Longmenshan Fault Zone Activity

On April 20th, 2013, a Ms7.0 earthquake occurred in Lushan County, Sichuan province. The earthquake is directly related to the activity of Longmenshan fault zone. In this article, deformation monitoring data in longmenshan and its surrounding areas was analyzed and the result shows that the activity trend of longmenshan fault zone depends on the relative motion between Bayan Har block and sichuan basin, and the main power of the movement comes from the Tibetan plateau and the upper Yangtze craton massif of push. In recent years, the longmenshan and its surrounding areas is one of the main seismogenic area in China mainland. In this paper, in combination with seismogenic area of geological structure and crustal deformation observation data analysis results, The earthquake and longmenshan fault zone activity relationship, and put forward the key monitoring area in the next five years.