2014年2月12日新疆和田地区于田县MS7.3地震发生在塔里木盆地的南边,昆仑山区海拔4 500 m左右地带,青藏高原边界的阿尔金断裂带。阿尔金断裂带属于大陆内巨型断裂带,绵延1 600 km,此次地震位于阿尔金断裂带的西南段,震区内断裂带呈放射状,由多条断裂构成,规模较大,根据震源机制解得到本次地震为左旋走滑破裂形式。结合GF-1高分辨卫星数据,对比震前、后影像,在硝尔库勒盆地南缘断裂带发现一系列新的地表破裂带。 February 12, 2014 Xinjiang Yutian MS7.3 earthquake in Yutian County occurs in the south of the Tarim Basin, Kunlun Mountains at an elevation of 4 500 m and the Altyn Tagh Fault at the border of the Qinghai-Tibet Plateau. The Altyn Tagh fault belongs to the intracontinental giant fault belt stretching for 1 600 km. This earthquake is located in the southwestern segment of the Altyn Tagh fault zone. The fault zone in the quake zone is radial and consists of multiple faults with a large scale. According to the focal mechanism solution The earthquake was obtained as a left-lateral strike-slip rupture. Combined with high-resolution satellite data of GF-1, a series of new surface rupture zones were discovered on the southern margin of the Qunker basin comparing the pre-seismic and post-seismic images.