摘要
本文用标准偏差法和标度变换法，计算了云南省五个地震区带上１９６５─１９９５年间地震序列的自仿射分形的分维值Ｄ△ｔ（地震时间间隔序列自仿射分形）、ＤＭ－ｔ（地震震级－时间序列自仿射分形）及自相似分形的分维值Ｄ０（地震时间分布自相似分形），得到了相应的时间变化曲线：ＤＭ－ｔ～ｔ，Ｄ△ｔ～ｔ和Ｄ０～ｔ。通过相互比较发现，其中ＤＭ－ｔ的随时间变化在中强地震前的反应最为敏感。
Self - affine fractal dimension DΔt (self - affine fractal dimension for earthquake time interval sequence), DM - t, (self - affine fractal for earthquke magnitude - time) and D0 (temporal self similar fractal dimension) of earthquake sequences in five seismic belts in Yunnan in 1965 - 1995 are calculated by standard deviation and scale transformation methods respectively. Variation curves of DΔt ~ t, DM - t ~ t and D0 ~ t are obtained. It is discovered by comparison that variation of DM - t before moderate and strong earthquakes is most sensitive.
出处
《地震研究》
CSCD
北大核心
1996年第4期363-370,共8页
Journal of Seismological Research
关键词
地震预报
地震序列
分数维
云南
earthquake prediction
seismic sequence
fractal
Yunnan
