CAJ | 학술논문

利用 GAMIT/GLOBK软件分析了1998—2010年间多期 GPS 观测数据,获得了 ITRF2005框架下广西区域现今地壳运动三维速度场和应变场参数,并对区域形变场和现今构造运动动力学机制进行了初步讨论.GPS监测结果显示：广西区域现今地壳运动随华南块体作南东东方向的逆时针构造运动,ITRF2005框架下水平方向平均速率为33．49 mm/a,优势方向为 N 109．3°E；垂直方向平均速率为＋1．30 mm/a,整体趋势是自桂东向桂西方向垂向速率逐步增加.现今应变状态以 N 127．3°±4．8°E 挤压为主,最大主压应变率－2．7±0．5×10－9/a；兼有 N 37．3°±4．8°E 方向的拉张作用,最大主张应变率1．8±0．2×10－9/a.本文研究结果为描述广西区域现今地壳运动提供了一个更加精细的三维速度场.
이용 GAMIT/GLOBK연건분석료1998—2010년간다기 GPS 관측수거,획득료 ITRF2005광가하엄서구역현금지각운동삼유속도장화응변장삼수,병대구역형변장화현금구조운동동역학궤제진행료초보토론.GPS감측결과현시：엄서구역현금지각운동수화남괴체작남동동방향적역시침구조운동,ITRF2005광가하수평방향평균속솔위33．49 mm/a,우세방향위 N 109．3°E；수직방향평균속솔위＋1．30 mm/a,정체추세시자계동향계서방향수향속솔축보증가.현금응변상태이 N 127．3°±4．8°E 제압위주,최대주압응변솔－2．7±0．5×10－9/a；겸유 N 37．3°±4．8°E 방향적랍장작용,최대주장응변솔1．8±0．2×10－9/a.본문연구결과위묘술엄서구역현금지각운동제공료일개경가정세적삼유속도장.
The 3D crustal movement velocities filed and strain parameters of Guangxi area are acquired in the coordinate frame of ITRF2005 with the multi-period GPS data from 1998 to 2010 analyzed by using GAMIT/GLOBK software,and the area deformation field and present-day construction mechanism are also discussed in this paper.From the GPS monitoring results,the crustal movement of Guangxi area coincides with south China movement in the South-East-East anticlockwise direction,the average vertical velocity value is 33.49 mm/a in ITRF2005 frame,the preponderant direction is N 109.3°E,the average horizon velocity value is +1.30 mm/a,and the trend becomes increasing from East to West of Guangxi province. The present-day strain status is extrusion in N 127.3°±4.8°E direction,the main maximum extrusion strain is -2.7±0.5×10-9/a with a tension effect in the N 37.3°±4.8°E direction,and the main maximum tension strain is 1.8±0.2×10-9/a.A more precise 3D present-day crustal velocity filed of Guangxi area is presented in this paper with the full analyzing of GPS data.