48 2 2005 3 CHINESE JOURNAL OF GEOPHYSICS Vol. 48, No. 2 Mar., 2005,,. M S 811.,2005,48 (2) :321 326 Shan X J, Li J H, Ma C. Study on the feature of surface rupture zone of the West of Kunlunshan Pass earthquake (M S 811) with high spatial resolution satellite images. Chinese J. Geophys. (in Chinese), 2005, 48 (2) :321 326 M S 811,,,, 100029 2001 11 14 811.,10m SPOT, 1m IKONOS., 811,. 350km, 3, 100., 1314 1618mmΠa, AA. 718m, 1250m, 93 17 E,35 47 N,. SPOT, IKONOS,,, 0001-5733(2005) 02-0321 - 06 P315 2004-06 - 21, 2004-11 - 21 Study on the feature of surface rupture zone of the west of Kunlunshan pass earthquake ( M S 811) with high spatial resolution satellite images SHAN Xin2Jian, LI Jian2Hua, MA Chao State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China Abstract On November 14, 2001, a M S = 811 earthquake occurred in the west of Kunlunshan pass. High spatial resolution satellite images are used to study the earthquake surface rupture zone. By means of 10m spatial resolution SPOT images the major rupture zone can be revealed distinctly, meanwhile, 1m spatial resolution IKONOS images display the fine structures and kinematical characteristics of the surface rupture of the earthquake. The result shows that the main rupture consisting of three sub2rupture zones is about 350km long on the east side of Bukadabanfeng peak and its strike is about 100 degrees. The surface rupture zone is located mainly in a graben zone and fault valleys consisting of flood mesa or the rear edge of flood mesa in the southern foot of Kunlunshan and is superimposed on a pre2existing fault. A series of dongas and valleys cut by the rupture show isochronous sinistral strike slip, the slip rate is 1314 1618mmΠa on an average that belongs to AA activity level. The maximum sinistral horizontal dislocation is 718m and the maximum rupture zone width is 1250m. The macroscopic epicenter lies in 93 17 E,35 47 N on the surface rupture zone nearby Yuxifeng peak. Keywords SPOT images, IKONOS images, The earthquake rupture zone, High spatial resolution, The west of Kunlunshan pass (40374013) (2002DIA10001).,,1966,,, INSAR GIS. E2mail :xjshan @1631net
322 (Chinese J. Geophys. ) 48 1 2001 11 14, 811, 1950 8 15 816 1951 11 18 810,. [1 3 ],.,, NWW. N, S, 55 85, 1000km. [4 7 ].,.,, [8 ]. 1902 7,1937 715,1947 717,1963 7-1973 713, 1979 719 [9 ]., 13000a, 12 [8 ]. 811, [10 14 ]. 4500m,,,. 811 350km, 26km. SPOT HRV 5m, 10m. 10 25000km 2 SPOT 10m (92 42 94 54 E,35 36 36 12 N) 1 25000,.,,,. 1999 IKONOS, 1m. 8 IKONOS, 1 5000,,. IKONOS,, ;,.,,,. 2 811. 25000 SPOT 5000 IKONOS,, 3. 211,, (91 61433 E 36 01000 N ), ( 92 131500 E, 35 531417 N), 100, 107km ( 1). [12 16 ]. SPOT., IKONOS 92 12 E, 100m. 1 The earthquake surface rupture zone ; 2 The macroscopic epicenter. 1 811 Fig. 1 The surface rupture zone of the M S = 811 earthquake occurred in the West of Kunlunshan Pass 91 161368 E, 36 11370 N 91 171594 E,36 11210 N ( a2a ). SPOT,,,,, 3 ( 2 (a1) ).,25000, 5m, 015m. 17115 17615m 13310m. 3km,, -
2 : M S 811 323 4 [8 ]. 1018 1417mmΠa, AA [15 ]. 2 SPOT (a) IKONOS (b) (a1) ( a2a ),,, ; (a2) 2002 ( b2b ),, ; (a3) 1997, 811 ( c2c ) ; (a4), (d2d ) ; (b1) (e2e ) ; (b2) ( f2f ),B 718m ; (b3) B C ( g2g ) D ; (b4) B, C D ( h2h ). Fig. 2 SPOT images (a) and IKONOS images (b) (a1) Displaying a flat2straight fault ( a2a ) forming the rupture zone of eastern Kunlunshan ; The surface rupture zone coincides with the fault ; A series of dongas and valleys cut by the rupture show isochronous deformation and display a sinistral strike slip ; (a2) Displaying a surface rupture zone ( b2b ) from the image taken in 2002 ; a series of dongas and runways running out the rupture underwent isochronous distortion and display a sinistral strike slip ; (a3) The image was taken in 19971Displaying the pre2existing surface rupture zone ( c2c ) ; (a4) Reflecting the rupture zone figure by the linear image ( d2d ) in the joint of distinct different terrains ; (b1) Displaying the surface rupture zone ( e2e ) consisting of shear crack and tensile crack ; (b2) Displaying a dislocation physiognomy formed by the rupture zone ( f2f ) ; The maximum sinistral horizontal dislocation is 718m ; (b3) The surface rupture zones consisting of shear cracks and tension cracks and tension shearing cracks ( g2g ) ; (b4) The surface rupture zone ( h2h ), being made up of shear cracks and tension cracks and tension shearing cracks, coincides with the eastern Kunlunshan fault. 92 61792 E, 35 531901 N 92 71044 E,35 531889 N ( e2e ). IKONOS,, 100 75.,, 2m. 2611m, ( 2 ( b1) ).,., 811. 92 91492 E, 35 531603 N 92 101723 E,35 531425 N ( b2b ). SPOT
324 (Chinese J. Geophys. ) 48,,,, 95 ( 2 (a2) ). 1km. 1,2,3 8, 8015, 6710,8515 8410m. 811,., 1km, 5, [8 ], 1314 1618mmΠa, AA [15 ],,, 3816mmΠa 36 [16 18 ]. 1997 9 28 SPOT, 2001 11 14 811, ( 2 (a3) ). 1,2,3 8, 7515, 6310,8015 7915m., 1,2,3 8 811 510,410,510 415m. 212 (92 131108 E, 35 521833 N), [19 ] [12 ]. SPOT IKONOS,, 2km ( 93 261500 E, 35 451000 N), 95, 114km. 1,, 6, 1250m.,,,. 2002 5 29 SPOT, 92,, 271333 E,35 521133 N 92 311500 E,35 511917 N,, 10km,, 612km. 1997 9 28 SPOT, 811,,.. IKONOS, 93 131200 E,35 461707 N 93 131695 E,35 461666 N,, 100, 5,, 1250m,. IKONOS, 93 151408 E,35 461516 N 93 151652 E,35 461486 N (f2f ),, ( 2 (b2) ).,. 93 151522 E,35 451504 N, 100m 500m B C 711m 718m. IKONOS. 213. (93 271616 E, 35 451133 N), (94 481000 E,35 321383 N), 100, 124km.,.,,.,,. 94 42 E,, 94 48 E. IKONOS,. 93 371483 E,35 431947 N, 2m,, 100m. 95, 100m 411m. 93 381664 E, 35 431753 N,, 93 361280 E,35 441086 N,,. 9km.,.. IKONOS, 94 91159 E,35 381896 N 94 91439 E,35 381859 N ( g2g ),, 100, (B), 60, (C), 200 300m (D), (D) 512m, ( 2 (b3) ). SPOT, 94 131622 E,35 381124 N 94 141854 E,35 371863 N ( d2d ),
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