- 责任者：Wang Xingzhou (Earthquake Administration of Anhui Province ; Hefei 230031 ; China) ; Jiang Changsheng
- 刊名：Earthquake
- 出版年：2011
- 卷期：31(1)
- 关键词：大震 ; great earthquakes ; 地震活动性 ; seismicity ; 西部地区 ; West China
- 页码：p.58-66
- 图表：illus., 25 refs.
- 分类号：0500
- issnNo：ISSN1000-3274
- isbnNo：CN11-1893/P
In this paper, the authors analyze the state of strong earthquake activity based on seismic information entropy of Weibull distribution for West China continent. The result shows that the entropy value in the west area is low at present, which may mean that the west area is going to enter a new active period of strong earthquakes and the risk site may be in the Qingzang tectonic block. In the same scanning condition of seismic information entropy, the time-curves of different second grade blocks in each first grade block are highly similar, but have large difference among second grade blocks in different first grade blocks. Based on statistical physics analysis, this method can reflect the regional tectonic characteristics and overcome the disadvantage of lack of sample size in division of periodicity.