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1 Vol128 No14 GLOBAL GEOLOGY Dec : (2009) ,,,, :,, ( ), 44 N,, 4 6 km 8 12 km ; 8 12 km km,, Vp V s, : ; ; ; : P31511 : A do i: / j1issn Earthquake space distribution and its relationships with ma in faults, deep structure and stress field in Northeast China WANG Zhao2guo, L IU Cai, FENG Xuan, Q IN Shu2hong College of Geoexploration Science and Technology, J ilin U niversity, Changchun , China Abstract: Under the control of northeast2east stress field, the earthquakes in Northeast China have their spe2 cial characteristics. The statistical results of earthquake space distribution and dep th indicate that the earthquakes are mainly controlled by the lithospheric fault ( Kaiyuan 2Chifeng fault) between the north and the south. in Northeast China w ith great differences The earthquakes occurred in the north are less than in the south, divided by the boundry of 44 N, and the earthquakesmainly concentrated in 4 6 km and 8 12 km in dep th in the north, and in 8 12 km and km in the south. thermal areas beneath Kaiyuan2Chifeng fault, earthquakes getting ready in deep part. The analysis of earthquake dep th indicates that there have p robably low Tanlu fault and Daxinganling fault, which p rovide the conditions for The analysis of Vp and V s sectional data of earthquake distribution suggests that the earthquakes are often centralized in the intersectant zones of faults w ith velocity change zone and faults w ith faults. Key words: Northeast China; earthquake distribution; fault system; tectonic stress field 0 ( ),, : ; : : (19782),,,. E2mail: qinshuhong3993@1631com

2 [ 1 ] [ 1 ] ( 1), [ 2 ],,, [ 3210 ],,,, 20 [ 9211 ],,,, : 1 - ; 2 ; 3 ; 4 ; 5 ; ; 1. ( ) ; 2. ; 3. ; 4. ( ) ; 5. ; 6. ; 7. ; 8. ; 9. ; [ 1] F ig11 M a in structure un its and faults system in Northea st Ch ina [ 1] E, N, [ 12 ] [ 13 ] ML [ ]

4 : 515 ML 210 ( 2 3) 2 1831 1982 2001 2007 F ig12 Earthquake d istr ibution map in Northea st Ch ina from B1C. 1832 to A1D. 1982 and from A. D.

3 4 : 515 ML 210 ( 2 3) F ig12 Earthquake d istr ibution map in Northea st Ch ina from B1C to A1D and from A. D to ,, 3,, 2 1, [ 17 ],, F ig13 D istr ibution map of earthquake depth in North2 ea st Ch ina from 2001 to 2007, :, ,, 44 N, 1 516, 7812% ;, ;, 44 N, ( 4), 44 N, 8 12 km km, 4 6 km 8 12 km ;,,, 22 km, 450, quake1cn. H ttp: / /data1earth2

516 28 [ 18 ],, 3, 22 km,, ( a) 44, ( b) 44 4 F ig14

21, 22 ] [ 22224 ] Q [ 24 ],, [ 25 ] V s - V p 1 1,

4 [ 18 ],, 3, 22 km,, ( a) 44, ( b) 44 4 F ig14 Sta tistica l map of earthquake depth, [ 19, 20 ] [ 21, 22 ] [ ] Q [ 24 ],, [ 25 ] V s - V p 1 1, 6 ( 5) 5 44 N, 4 6 km, 8 12 km, 30 km, [ 5 ],,, L1 L2

5 第 4期王兆国刘财等 : 中国东北地区地震空间分布与主要断裂带 L3 线 L4 线 L5 线 ( a) ( b) L6 线 ( a) 为 Vp 等值线, ( b) 为 V s等值线剖面位置如图 3 所示, 黑粗线为莫霍界面位置, 天然地震位置图 5 速度结构等值线与地震分布图 F ig15 Isolin es of veloc ity structure and d istr ibution s of earthquake China Academic Journal Electronic Publishing House. All rights reserved

6 ,, [ 8 ],, 4 (1), (2),, 44 N,, 4 6 km 8 12 km, 8 12 km km (3), (4) : [ 1 ],,. 2 ( ) [M ]. :, 2003: YANG Bao2jun, ZHANG Mei2sheng, WANG Pu2jun. Geological 2geophysical analytic interp retation on oil and gas potential region of China (Volume 1) [M ]. Beijing: Science Press, 2003: [ 2 ],,,. [M ]. :, 2000: WANG Xiao2feng, L I Zhong2jian, CHEN Bai2qing, et al. Tanlu fault zone [M ]. Beijing: Geological Publish2 ing House, 2000: [ 3 ]. 2 [ J ]., 1997, 16 (1) : WU M ing2da. The features of activities and seism ic at J inzhou22chaoyang fault belt in L iaoning Province [ J ]. Global Geology, 1997, 16 ( 1) : [ 4 ],. [ J ]., 1999, 18 (2) : FU W ei2zhou, HE R i2zheng. Structural characteristics of earthquakes in Songliao Basin and its peripheral regions [ J ]. Global Geology, 1999, 18 ( 2) : [ 5 ],. [ J ]., 1989, 5 (2) : ZHONG Yi2zhang, GAO Chang2bo. A study on active faults in the northeast part of block2faulting area of North China and their relation to the earthquake [ J ]. Seismo2 logical Research of Northeast China, 1989, 5 ( 2) : [ 6 ],,,. [ J ]., 2007, 23 (1) : ZHANG Feng2m ing, ZHANG Ya2jiang, XU Xiao2yan, et al. Dynam ic action on the subduction movement of the west part of Japan sea2deep focus earthquake region in Northeast area of China to the shallow source earthquake in Northeast A rea [ J ]. Seismological Research of North2 east China, 2007, 23 ( 1) : [ 7 ],,,. [ J ]., 2005, 21 (2) : 128. SUN W en2bin, WANG Xiao2feng, CHANG Zheng, et al. D iscussion on time2space evolutionary characteristics of seism icity in Northeast of China and dynam ic mechanism [ J ]. Seismological Research of Northeast China, 2005, 21 (2) : 128. [ 8 ]. [ J ]., 1983, 38 ( 9) : YANG J ing2chun. Relationship between morphotectonic evolution and Quaternary tectonic stress state in north and northeastern China [ J ]. Acta Geographica Sinica, 1983, 38 ( 9) : [ 9 ],,,. [ J ]., 2002, 11 (3) : MENG Xian2sen, GUAN Yu2hui, ZHU Fu2xiang, et al. Seism icity and postseism ic early trend p rediction for the north region of Northeast China [ J ]. Journal of Natural D isasters, 2002, 11 ( 3) : [ 10 ],,,.

7 4 : 519 [ J ]., 2004, 20 (1) : SUN W en2fu, GUAN Ying2mei, L I Fang, et al. Study on the seism icity law in Northeast China and its develo2 p ing trend [ J ]. Seismological Research of Northeast China, 2004, 20 ( 1) : [ 11 ]. [ J ]., 1987, 3 (1) : YU Long2wei. The characteristics of the space and time distributions in Northeast China [ J ]. Seismological Re2 search of Northeast China, 1987, 3 ( 1) : [ 12 ]. [M ]. :, 1983: GU Gong2xu. Seismological catalogue of China [ M ]. Beijing: Science Press, 1983: [ 13 ]. [M ]. :, 1980: Bureau. Seismological catalogue of East China [ M ]. Beijing: Seismological Press, 1980: [ 14 ]. ( 1980 ) [M ]. :, 1986: Bureau. Annual seismological report of China ( 1980 ) [M ]. Beijing: Seismological Press, 1986: [ 15 ]. ( 1981 ) [M ]. :, 1986: Bureau. Annual seismological report of China ( 1981 ) [M ]. Beijing: Seismological Press, 1986: [ 16 ]. ( 1982) [M ]. :, 1987: Bureau. Annual seismological report of China ( 1982 ) [M ]. Beijing: Seismological Press, 1987: [ 17 ] Stein S, W ysession M. An introduction to seismology, earthquakes, and earth structure [ M ]. Cornwall: B lackwell Publishing House, 2003: [ 18 ],,, : [ J ]., 2009, 52 (1) : W E I Sheng2ji, N I Si2dao, CHONG J ia2jun, et al. The 16 August 2003 Chifeng earthquake: is it a lower crust earthquake? [ J ]. Chinese Journal of Geophysics, 2009, 52 (1) : [ 19 ]. [ J ]., 1983, 1: LU Zao2xun. The deep2seated structures and the earth2 quakes in Northeast China [ J ]. Journal of Changchun University of Earth Science, 1983, 1: [ 20 ],,,. [ J ]., 2006, 21 (3) : TU Guang2hong, J IANG W ei2wei, ZHU Dong2ying, et al. The relationship s between the characteristics of Northeast China residual gravity and magnetic anomalies and geological tectonic & metallogenic belt [ J ]. Pro2 gress in Geophysics, 2006, 21 ( 3) : [ 21 ],,,. [ J ]., 1998, 28 ( 2) : FU W ei2zhou, YANG Bao2jun, L IU Cai, et al. Study on the seismology in Manzhouli 2Suifenghe geoscience transect of China [ J ]. Journal of Changchun University of Science and Technology, 1998, 28 (2) : [ 22 ],,. [ J ]., 2006, 33 (4) : YANG Bao2jun, L IU Cai, L IU W an2song. Seismological features of the lithospheric structure in Northeast China and dynam ic controls on m ineral resources [ J ]. Geolo2 gy in China, 2006, 33 ( 4) : [ 23 ],,,. [ J ]., 2008, 23 (3) : L IU Yang, L IU Cai, YANG Bao2jun, et al. Regional characteristic analysis of P2wave velocity and deep oil2 gas in the northern Songliao Basin [ J ]. Progress in Ge2 ophysics, 2008, 23 ( 3) : [ 24 ]. : [ D ]. :, 2006: L IU Yang. D istrubutional characteristics and relation2 ship with geotectonics about crust physical p roperty in Northeast of China: Ph. D degree thesis [D ]. Chang2 chun: J ilin University, 2006: [ 25 ],,,. [ J ]., 1997, 40 ( 5) : ZHU J ie2shou, CAO J ia2m in, L I Xian2gui, et al. The reconstruction of p relim inary three2dimensional earthπs model and its imp lications in China and adjacent regions [ J ]. Acta Geophysica Sinica, 1997, 40 ( 5 ) :

14 17.,., Fig. 1 Bougeur gravity map of research region 2 Fig. 2 Magnetic map of research region

14 17.,., Fig. 1 Bougeur gravity map of research region 2 Fig. 2 Magnetic map of research region 1 7 1 Vol. 17 No. 1 2002 3 (13 23) PROGRESS IN GEOPHYSICS March 2002 (,,100101) [ ],, 39.,,. [ ] ; ; [] P738 [] A [ ]100422903 (2002) 0120013211 0,,.,,, NE [1 ],.., ( NE, EW,NE ),.,.,,. 1 20 20 km ( 10