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CHEN PEISHANup, HU RUIHUAup2, ZHOU KUNGENup3, LI WENXIANGuploans.com sh advancelucashadv. 1984: HOMOGENEOUS MAGNITUDE SYSTEM OF THE MAINLAND CHINA. Acta Seismologica Sinica, 6(4): 369-394.
Citation: CHEN PEISHANup, HU RUIHUAup2, ZHOU KUNGENup3, LI WENXIANGuploans.com sh advancelucashadv. 1984: HOMOGENEOUS MAGNITUDE SYSTEM OF THE MAINLAND CHINA. Acta Seismologica Sinica, 6(4): 369-394.
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HOMOGENEOUS MAGNITUDE SYSTEM OF THE MAINLAND CHINA

  • 1. Institute of Geophysics, State Seismological Bureau; 2. Wuhan Seismic Station, Seismological Bureau of Hubei Province; 3. Seismological Bureau of Hubei Province

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  • Published Date: August 31, 2011
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    • Abstract
  • Homogeneous magnitude system of the mainland China has been made from the data of SK instrumental network, using the method that together obtain earthquake magnitude, calibration function and correction of the site condition. Four new calibration functions have been obtained for P-wave PZ, PⅡ, and S-wave SH, SV from the distance of 2.5 to 100 degree. 21 corrections of the site condition are also obtained. The standard error of single station measurement of earthquake magnitude is about 0.21-0.23, utilizing the new calibration function and the corrections of site condition. The earthquake the magnitude of which is equal to or greater than 6.0 can be usually recorded by 16 stations. In this case, the standard error of average magnitude over the network is about 0.05. The body wave magnitude mSK, from SK instrumental measurement has a systematic difference to mb and mB, because mSK, mb and mB depend on instrument of measurement strongly. The principle of making mSK close to Ms is adopted.We have a suggestion of magnitude of displacement spectrum: the earthquake will be equal to each other at one frequency when their average displacement spectrum over on some focal reference sphere has the same value for P-wave (or S-wave). This magnitude scale has following advantage: 1. The magnitude of network on different region of all over world can be unified in view of it being absolute mechanical scale. 2. It has obvious meaning in physics. It can represent the size of earthquake and can be defined for any size and slow earthquakes as well as has no saturation trouble. 3. It can link up the current magnitude scale. 4. The measurement is easy and has less error for the displacement instrumental record.
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    • References (1)
  • [1] Nuttli, O. W., G. A. Bollinger, and D. W. Griffiths, on the relation between modified Mercalli intensity and body——wave magnitude, Bull. Seism. Soc. Am., 69, 893——909, 1979.

    [2] Christoskov, L, N. V. Kondorskaya, and J. Vanek, Homogeneous magnitude system of the Eura——sian Continent, Tectonophysics, 49, 131——138, 1978.

    [3] Christoskov, I. I. V. Fedorova, N. V. Kondorskaya, and J. Vanek, on a homogeneous system of selected Eurasian stations for magnitude determinations, Pure Appl. Geoplays. 112. 619——626, 1974.

    [4] Christoskov, L., N. V. Kondorskaya, J. Vanek, Homogeneous magnitude system of the Eurasian Continent, World Data Center A for Solid Earth Geophysics, Report 1979.

    [5] Kanamori, H. and G. Stewart, Mode of the strain release along the Gibbs fracture zone, Mid——Atlantic tidge, Phys. Earth Planet. Inter., 11, 312——332, 1976.

    [6] Gupta, H. K., and B. K. Kastogi, Earthquake u, h }——, 1!W relation and source multiplicity, Geophys.J. R. astr. Soc., 28, 65——89, 1972.

    [7] Duda, S. J., Physical significance of the earthquake magnitude——the present state of interpretation of the concept, Tectonophysics, 49, 3/4, 119——130, 1978.

    [8] Kanamori, H., and D. L. Anderson, Theoretical base of some empirical relations in seismology,Bull.. Seis. Soc. Am., 65, 5, 1073——1095, 1975.

    [9] 陈培善,分析地震波估算地壳内的应力值,地震学报,3, 3, 251——263, 1981,

    [10] 金严、陈培善,地震仪的暂态响应及其对地震波形的影响,地球物理学报,25,增刊,622——631,1982.

    [11] 维尔莫,p, L.地震观测业务手册,国家地震局地球物理研究所译,1979.

    [1] Nuttli, O. W., G. A. Bollinger, and D. W. Griffiths, on the relation between modified Mercalli intensity and body——wave magnitude, Bull. Seism. Soc. Am., 69, 893——909, 1979.

    [2] Christoskov, L, N. V. Kondorskaya, and J. Vanek, Homogeneous magnitude system of the Eura——sian Continent, Tectonophysics, 49, 131——138, 1978.

    [3] Christoskov, I. I. V. Fedorova, N. V. Kondorskaya, and J. Vanek, on a homogeneous system of selected Eurasian stations for magnitude determinations, Pure Appl. Geoplays. 112. 619——626, 1974.

    [4] Christoskov, L., N. V. Kondorskaya, J. Vanek, Homogeneous magnitude system of the Eurasian Continent, World Data Center A for Solid Earth Geophysics, Report 1979.

    [5] Kanamori, H. and G. Stewart, Mode of the strain release along the Gibbs fracture zone, Mid——Atlantic tidge, Phys. Earth Planet. Inter., 11, 312——332, 1976.

    [6] Gupta, H. K., and B. K. Kastogi, Earthquake u, h }——, 1!W relation and source multiplicity, Geophys.J. R. astr. Soc., 28, 65——89, 1972.

    [7] Duda, S. J., Physical significance of the earthquake magnitude——the present state of interpretation of the concept, Tectonophysics, 49, 3/4, 119——130, 1978.

    [8] Kanamori, H., and D. L. Anderson, Theoretical base of some empirical relations in seismology,Bull.. Seis. Soc. Am., 65, 5, 1073——1095, 1975.

    [9] 陈培善,分析地震波估算地壳内的应力值,地震学报,3, 3, 251——263, 1981,

    [10] 金严、陈培善,地震仪的暂态响应及其对地震波形的影响,地球物理学报,25,增刊,622——631,1982.

    [11] 维尔莫,p, L.地震观测业务手册,国家地震局地球物理研究所译,1979.
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