利用GPS观测研究中国西北地区应变能变化特征
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摘要
利用1999～2001年和2001～2004年中国大陆西北地区的GPS观测资料,对该地区的应变能进行了计算,并对照该地区同时期发生的地震活动、地质构造分布,讨论了地震活动、断层分布和应变能变化之间的关系。结果表明:大多数地震发生在主要断裂附近而不是具有最大应变能的地区。
The strain energy is computed by use of GPS data in the northwest of China during 1999-2001 and 2001-2004 respectively.Through the comparison among strain energy variation,earthquakes occurred in the two GPS measurement periods and fault distribution in the area,it is found that the most earthquakes occurred near main fault other than the area with largest strain energy.
The strain energy is computed by use of GPS data in the northwest of China during 1999-2001 and 2001-2004 respectively.Through the comparison among strain energy variation,earthquakes occurred in the two GPS measurement periods and fault distribution in the area,it is found that the most earthquakes occurred near main fault other than the area with largest strain energy.
引文
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15武际可,王敏中,王炜.弹性力学引论[M].北京:北京大学出版社,2000.15Wu Jike,Wang Minzhong and Wang Wei.Intruduction of elastic mechnics[M].Beijing:Beijing University Press,2000.(in Chinese)
16沈正康,王敏,甘卫军,等.中国大陆现今构造应变率场及其动力学成因研究[J].地学前缘,2003,10(特刊):94～100.16Shen Zhengkang,Wang Min,Gan Weijun,et al.Contem-porary tectonic strain rate field of Chinese continent and its geodynamic implications[J].Earth Science Frontiers,2003,10(Spec.):94-100.(in Chinese)
2Takao T.Crustal deformation associated with the1995Hyogo-ken Nanbu earthquake,Japan,derived from GPS measurements[J].Special Issue on the1995Hyogo-ken Nanbu Earthquake of Journal of the Earth,1996.
3Snay R A,Neugebauer H C and Prescott W H.Horizontal deformation associated with the Loma Prieta earthquake[J].Bull.S.S.A.,1991,81(5):1647-1659.
4Heki K,Miyazaki S and Tsuji H.Silent fault slip following an interplate earthquake at the Japan Trench[J].Nature,1997,386:595-597.
5Larson K M,Burgmann R,Bilham R and Freymueller J.Ki-nematics of the India-Eurasia collision zone from GPS measurements[J].J.Geophys.Res.1999,104,1077-1093.
6黄立人,郭良迁.华北(北部)地区的地壳水平运动特征及其模型——GPS测量结果的初步分析[J].地壳形变与地震,1998,18(2):20～27.6Huang Liren and Guo Liangqian.The characteristics and model of horizontal deformation in Northern China——anal-ysis of GPS data[J].Crustal Deformation and Earthquake,1998,18(2):20-27.(in Chinese)
7宋成骅,许才军,刘经南,等.青藏高原块体相对运动模型的GPS方法确定与分析[J].武汉测绘科技大学学报,1998,23(1):22～25.7Song Chenhua,Xu Caijun,Liu Jingnan,et al.The determi-nation of relative motion model by GPS data in Qinhai-Tibet Plateau[J].Journal of Wuhan Technical University in Sur-veying and Mapping,1998,23(1):20-25.(in Chinese)
8王琪,赖锡安,游新兆,等.红河断裂的GPS监测与构造应力场[J].地壳形变与地震,1998,18(2),49～56.8Wang Qi,Lai Xian,You Xinzhao,et al.The tectenic stress monitored by GPS in Honghe faults[J].Crustal Deformationand Earthquake,1998,18(2):20-27.(in Chinese)
9黄立人,马青,郭良迁,等.华北部分地区水平变形的力学机制——三维有限元和GPS复测结果的分析[J].地震学报,1999,21(1):50～56.9Huang Liren,Ma Qing,Guo Liangqian,et al.The mechanism of horizontal deformation in Northern China——analysis of result computed by three dimensional elements with GPS data[J].Acta Seismological Sinica,1999,21(1):50-56.(in Chinese)
10甘卫军,等.青藏高原地壳水平差异运动的GPS观测研究[J].大地测量与地球动力学,2004,24(1):29～35.10Gan Weijun,et al.Horizontal crustal movement of Tibetan plateau from GPS measurements[J].Journal of Geodesy and Geodynamics,2004,24(1):29-35.(in Chinese)
11孙建中,杨少敏.用GPS资料揭示现今中国大陆构造运动[J].大地测量与地球动力学,2005,25(3):75～80.11Sun Jianzhong and Yang Shaomin.Tectonic movement of Chinese mainland revealed from GPS data[J].Journal of Geodesy and Geodynamics,2005,25(3):75-80.(in Chi-nese)
12王双绪,等.昆仑8.1级地震前青藏块体东北缘构造运动特征[J].大地测量与地球动力学,2004,24(1):50～55.12Wang Shuangxu,et al.Features of horizontal movement in northeastern margin of Qinghai-Tibet block beforeMs8.1Kunlun earthquake[J].Journal of Geodesy and Geodynam-ics,2004,24(1):50-55.(in Chinese)
13张跃刚,等.从GPS观测看华北地区的形变场演化[J].大地测量与地球动力学,2006,26(1):36～41.13Zhang Yuegang,et al.Study on evolution of deformation field in North China area with GPS data[J].Journal of Ge-odesy and Geodynamics,2006,26(1):36-41.(in Chi-nese)
14石耀霖,朱守彪.用GPS位移资料计算应变方法的讨论[J].大地测量与地球动力学,2006,26(1):1～8.14Shi Yaolin and Zhu Shoubiao.Discussion on method of cal-culating strain with GPS displacement data[J].Journal of Geodesy and Geodynamics,2006,26(1):1-8.(in Chi-nese)
15武际可,王敏中,王炜.弹性力学引论[M].北京:北京大学出版社,2000.15Wu Jike,Wang Minzhong and Wang Wei.Intruduction of elastic mechnics[M].Beijing:Beijing University Press,2000.(in Chinese)
16沈正康,王敏,甘卫军,等.中国大陆现今构造应变率场及其动力学成因研究[J].地学前缘,2003,10(特刊):94～100.16Shen Zhengkang,Wang Min,Gan Weijun,et al.Contem-porary tectonic strain rate field of Chinese continent and its geodynamic implications[J].Earth Science Frontiers,2003,10(Spec.):94-100.(in Chinese)
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