中国物理B ›› 2001, Vol. 10 ›› Issue (5): 395-397.doi: 10.1088/1009-1963/10/5/306

• GENERAL • 上一篇    下一篇

EARTHQUAKE SCALING PARADOX

吴忠良   

  1. Institute of Geophysics, China Seismological Bureau, Beijing 100081, China
  • 收稿日期:2000-12-21 修回日期:2000-11-30 出版日期:2005-06-12 发布日期:2005-06-12
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 49725410) and the Lamont-Doherty Earth Observatory, Columbia University, NY.

EARTHQUAKE SCALING PARADOX

Wu Zhong-liang (吴忠良)   

  1. Institute of Geophysics, China Seismological Bureau, Beijing 100081, China
  • Received:2000-12-21 Revised:2000-11-30 Online:2005-06-12 Published:2005-06-12
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 49725410) and the Lamont-Doherty Earth Observatory, Columbia University, NY.

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摘要： Two measures of earthquakes, the seismic moment and the broadband radiated energy, show completely different scaling relations. For shallow earthquakes worldwide from January 1987 to December 1998, the frequency distribution of the seismic moment shows a clear kink between moderate and large earthquakes, as revealed by previous works. But the frequency distribution of the broadband radiated energy shows a single power law, a classical Gutenberg-Richter relation. This inconsistency raises a paradox in the self-organized criticality model of earthquakes.

Abstract: Two measures of earthquakes, the seismic moment and the broadband radiated energy, show completely different scaling relations. For shallow earthquakes worldwide from January 1987 to December 1998, the frequency distribution of the seismic moment shows a clear kink between moderate and large earthquakes, as revealed by previous works. But the frequency distribution of the broadband radiated energy shows a single power law, a classical Gutenberg-Richter relation. This inconsistency raises a paradox in the self-organized criticality model of earthquakes.

Key words: earthquake size, scaling, self-organized criticality

中图分类号:  (Earthquakes)

  • 91.30.Px
91.30.Mv (Strong motions and shock waves) 91.30.Bi (Seismic sources (mechanisms, magnitude, moment frequency spectrum)) 05.65.+b (Self-organized systems)