【摘要】 根据20世纪50～60年代高等级三角测量资料和2004～2005年GPS复测数据,计算了新疆富蕴地区近50年的区域形变场。结果表明:富蕴断裂带中部的相对位移最大,约300mm,中误差约为60mm,平均形变速率最大达6mm/a;不管是采用GPS分析得到的断裂长期滑动速率(2mm/a)还是采用地质资料得到的滑动速率(4mm/a),根据弹性应变积累模型,扣除断裂长期构造运动的影响后还有较大的剩余形变场。富蕴地区近50年的区域形变场可能是地壳长期构造运动和强震(例如1931年富蕴8级地震)震后粘弹性松弛共同影响的结果。更多还原

【Abstract】 On the basis of the GPS data during 2004-2005 and the triangulation during 1950s-1960s,the regional deformation field in Fuyun area in the past 50 years is obtained.The results show that the maximal relative displacement along the Fuyun fault zone is about 300 mm, mean square error is about 60 mm,average deformation velocity about 6 mm/a; there has been a considerable residual deformation field after deleting the elastic deformation caused by the secular blocks movement, no matter adopting 2 mm/a of secular sliping velocity based on the GPS data ,or 4 mm/a from geological data.The regional deformation field in Fuyun area is likely to be caused by the secular tectonic movement and the viscoelastic relax after strong earthquake(such as M 8 Fuyun earthquake in 1931).更多还原