中国大陆地震视应力空间分布研究
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摘要
利用1900～2005年的中强震地震资料计算了中国大陆地震的平均视应力。中国大陆平均视应力为0.67MPa,略高于全球平均水平,中国东部平均视应力为0.32MPa,西部为0.97MPa。研究表明:利用地震震级计算的中国大陆地震视应力大小与利用数字地震波资料测定结果相差不大,其空间分布基本一致。
The average seismic apparent stress and its distribution in Chinese mainland are presented by use of data of medium-strong earthquake from 1900 to 2005.The stress is 0.67 MPa, more than the global level a little and 0.32 MPa in eastern China,0.97 MPa in western China. It is turns out that the average seismic apparent stress calculated with seismic magnitude in Chinese mainland is similar to that calculated with digital seismic wave data and the distribution is coincident with each other.
The average seismic apparent stress and its distribution in Chinese mainland are presented by use of data of medium-strong earthquake from 1900 to 2005.The stress is 0.67 MPa, more than the global level a little and 0.32 MPa in eastern China,0.97 MPa in western China. It is turns out that the average seismic apparent stress calculated with seismic magnitude in Chinese mainland is similar to that calculated with digital seismic wave data and the distribution is coincident with each other.
引文
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2Izutani Y and Kanamori H.Scale-dependence of seismic en-ergy to moment ratio for strike-slip earthquakes in Japan[J].Geophys Res Lett,2001,28:4007-4010.
3Wu Z L.Scaling of apparent stress from broadband radiatedenergy catalogue and seismic moment catalogue and its focal mechanism dependence[J].Earth Planets Space,2001,53:943-948.
4王卫东,等.陕西中南部的视应力场研究[J].西北地震学报,2004,26(4):343～346.Wang Weidong,et al.Study on apparent stress in the mid-dle and southern parts of Shanxi province[J].Northwestern Seismological Journal,2004,26(4):343-346.(in Chi-nese)
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9Wyss M.Apparent stresses of earthquakes on ridges com-pared to apparent stresses of earthquakes in trenches[J].Geophys J R astr Soc,1970,19:479-484.
10王辉,等.利用多种地震学参数研究中国大陆地壳应变场[J].地震,2005,25(2):9～18.Wang Hui,et al.Study on strain field of continental China using multiple seismological parameters[J].Earthquake,2005,25(2):9-18.(in Chinese)
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17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.Shi 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)
18Wyss M and Brune J N.Seismic moment,stress,and source dimensions for earthquakes in the California-Ne-vada region[J].J Geophys Res,1968,73:4681-4694.
19江在森,等.中国大陆地壳运动与强震关系研究[J].大地测量与地球动力学,2006,26(3):1～9.Jiang Zaisen,et al.On crustal movement in China continent and its relationship with strong earthquake[J].Journal of Geodesy and Geodynamics,2006,26(3):1-9.(in Chi-nese)
20敬少群,等.中国大陆及其周边块体的现时运动、变形及其动力学解释[J].地壳形变与地震,2001,21(4):8～16.Jing Shaoqun,et al.Current movement deformation and its dynamics explain in China continent and surrounding plates[J].Crustal Deformation and Earthquake,2001,21(4):8-16.(in Chinese)
21杨少敏,等.用双三次样条函数和GPS资料反演现今中国大陆构造形变场[J].大地测量与地球动力学,2002,22(1):68～75.Yang Shaomin,et al.Contemporary horizontal tectonic de-formation fields in China inversed from GPS observation[J].Journal of Geodesy and Geodynamics,2002,22(1):68-75.(in Chinese)
22陈学忠,等.地震视应力用于震后趋势快速判定的可能性[J].国际地震动态,2003,7:1～3.Chen Xuezhong,et al.Possibility of earlier judgement on seismic tendency after strong earthquake upon their appar-ent stresses[J].Recent Development in World Seismolo-gy,2003,7:1-3.(in Chinese)
2Izutani Y and Kanamori H.Scale-dependence of seismic en-ergy to moment ratio for strike-slip earthquakes in Japan[J].Geophys Res Lett,2001,28:4007-4010.
3Wu Z L.Scaling of apparent stress from broadband radiatedenergy catalogue and seismic moment catalogue and its focal mechanism dependence[J].Earth Planets Space,2001,53:943-948.
4王卫东,等.陕西中南部的视应力场研究[J].西北地震学报,2004,26(4):343～346.Wang Weidong,et al.Study on apparent stress in the mid-dle and southern parts of Shanxi province[J].Northwestern Seismological Journal,2004,26(4):343-346.(in Chi-nese)
5黄显良,等.华东地区视应力场的研究[J].地震地磁观测与研究,2005,26(5):22～29.Huang Xianliang,et al.Study on the apparent stress field in East China[J].Seismological and Geomagnetic Observation and Research,2005,26(5):22-29.(in Chinese)
6吴忠良,等.中国西部地震视应力的空间分布[J].地震学报,2002,24(3):293～301.Wu Zhongliang,et al.Distribution of apparent stress in western China[J].Acta Seismologica Sinaca,2002,24(3):293-301.(in Chinese)
7江在森,等GPS初步结果揭示的中国大陆水平应变场与构造变形[J].地球物理学报,2003,46(1):352-358.Jiang Zaisen,et al.Horizontal strain field and tectonic de-formation of China Mainland revealed by preliminary GPS re-sult[J].Chinese Journal of Geophysics,2003,46(1):352-358.(in Chinese)
8杨国华,等.由GPS观测结果推导中国大陆现今水平应变场[J].地震学报,2002,24(4):337～342.Yang Guohua,et al.Current horizontal strain field in Chi-nese mainland derived from GPS data[J].Acta Seismologica Sinica,2002,24(4):337-342.(in Chinese)
9Wyss M.Apparent stresses of earthquakes on ridges com-pared to apparent stresses of earthquakes in trenches[J].Geophys J R astr Soc,1970,19:479-484.
10王辉,等.利用多种地震学参数研究中国大陆地壳应变场[J].地震,2005,25(2):9～18.Wang Hui,et al.Study on strain field of continental China using multiple seismological parameters[J].Earthquake,2005,25(2):9-18.(in Chinese)
11Gutenberg B.Magnitude determination for deep-focus earth-quakes[J].Bull.Seism.Soc.Amer,1945,35:117-130.
12徐果明,周蕙兰.地震学原理[M].北京:地震出版社,1982.Xu Guoming and Zhou Huilan.The principle of seismology[M].Beijing:Seismological Press,1982.(in Chinese)
13虞廷林.中国东部应力场与板块运动[J].地震学刊,1994,14(2):13～17.Yu Tinglin.Stress field and plate motions in eastern area of China[J].Journal of Seismology,1994,14(2):13-17(in Chinese)
14丁国瑜,有关西藏高原活动构造的一些问题[J].西北地震学报,1988,10(增刊):1～11.Ding Guoyu.Several questions of the Tibet altiplano’activ-ity structure[J].Northwestern Seismological Journal,1988,10(Supp.):1-11.(in Chinese)
15游新兆,等.中国大陆地壳现今运动的GPS测量结果与初步分析[J].地壳形变与地震,2001,21(3):1～8.You Xinzhao,et al.GPS results of current crustal movement of China Continent and primary analysis[J].Crustal De-formation and Earthquake,2001,21(2):1-8.(in Chi-nese)
16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.Sun 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)
17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.Shi 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)
18Wyss M and Brune J N.Seismic moment,stress,and source dimensions for earthquakes in the California-Ne-vada region[J].J Geophys Res,1968,73:4681-4694.
19江在森,等.中国大陆地壳运动与强震关系研究[J].大地测量与地球动力学,2006,26(3):1～9.Jiang Zaisen,et al.On crustal movement in China continent and its relationship with strong earthquake[J].Journal of Geodesy and Geodynamics,2006,26(3):1-9.(in Chi-nese)
20敬少群,等.中国大陆及其周边块体的现时运动、变形及其动力学解释[J].地壳形变与地震,2001,21(4):8～16.Jing Shaoqun,et al.Current movement deformation and its dynamics explain in China continent and surrounding plates[J].Crustal Deformation and Earthquake,2001,21(4):8-16.(in Chinese)
21杨少敏,等.用双三次样条函数和GPS资料反演现今中国大陆构造形变场[J].大地测量与地球动力学,2002,22(1):68～75.Yang Shaomin,et al.Contemporary horizontal tectonic de-formation fields in China inversed from GPS observation[J].Journal of Geodesy and Geodynamics,2002,22(1):68-75.(in Chinese)
22陈学忠,等.地震视应力用于震后趋势快速判定的可能性[J].国际地震动态,2003,7:1～3.Chen Xuezhong,et al.Possibility of earlier judgement on seismic tendency after strong earthquake upon their appar-ent stresses[J].Recent Development in World Seismolo-gy,2003,7:1-3.(in Chinese)
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