测绘工程
測繪工程
측회공정
ENGINEERING OF SURVEYING AND MAPPING
2015年
8期
20-22,26
,共4页
红河断裂带%GPS%断层闭锁程度%滑动亏损%走滑速率
紅河斷裂帶%GPS%斷層閉鎖程度%滑動虧損%走滑速率
홍하단렬대%GPS%단층폐쇄정도%활동우손%주활속솔
Red River fault zone%GPS%fault locking%slip deficit%slip rate
利用1999~2013年青藏高原东南缘的GPS速度场观测数据,采用DEFNODE程序反演红河断裂带走滑速率、三维闭锁程度和滑动亏损分布。反演结果表明:红河断裂带北、中、南段右旋走滑速率分别约为(5.9±1.2)mm/a ,(4.8±0.6) mm/a和(4.3±0.4) mm/a ,在地表以下6 km的闭锁程度分别为0.43,0.22和0.25,其滑动亏损速率分别为3.3mm/a,2.6mm/a和2.3mm/a,红河断裂带闭锁程度和应变积累程度都比较低,与近年来红河断裂带整体活动微弱的现状相吻合。
利用1999~2013年青藏高原東南緣的GPS速度場觀測數據,採用DEFNODE程序反縯紅河斷裂帶走滑速率、三維閉鎖程度和滑動虧損分佈。反縯結果錶明:紅河斷裂帶北、中、南段右鏇走滑速率分彆約為(5.9±1.2)mm/a ,(4.8±0.6) mm/a和(4.3±0.4) mm/a ,在地錶以下6 km的閉鎖程度分彆為0.43,0.22和0.25,其滑動虧損速率分彆為3.3mm/a,2.6mm/a和2.3mm/a,紅河斷裂帶閉鎖程度和應變積纍程度都比較低,與近年來紅河斷裂帶整體活動微弱的現狀相吻閤。
이용1999~2013년청장고원동남연적GPS속도장관측수거,채용DEFNODE정서반연홍하단렬대주활속솔、삼유폐쇄정도화활동우손분포。반연결과표명:홍하단렬대북、중、남단우선주활속솔분별약위(5.9±1.2)mm/a ,(4.8±0.6) mm/a화(4.3±0.4) mm/a ,재지표이하6 km적폐쇄정도분별위0.43,0.22화0.25,기활동우손속솔분별위3.3mm/a,2.6mm/a화2.3mm/a,홍하단렬대폐쇄정도화응변적루정도도비교저,여근년래홍하단렬대정체활동미약적현상상문합。
Using the GPS velocity field data from 1999~2013 in the southeastern margin of the Tibetan Plateau ,it presents the slip rate ,three‐dimensional fault locking and slip deficit rates of Red River fault zone through DEFNODE .The results show that right‐lateral strike‐slip rate of Red River fault zone in the north ,mid and south part are respectively about (5.9 ± 1.2) mm/a ,(4.8 ± 0.6) mm/a ,(4.3 ± 0.4) mm/a , and in 6 km below the surface the slip deficit rates arerespectively about 0.43 ,0.22 ,0.25 .T hese results show that the locking fraction and the degree of strain accumulation are low ,which is consistent with the fact that Red River fault zone appears weakly at present time .