地震地质 ›› 1988, Vol. 10 ›› Issue (2): 29-38.

• 科研简报 • 上一篇    下一篇

大地震前地震信息熵的异常——以乌恰地震为例

朱令人   

  1. 新疆维吾尔自治区地震局
  • 收稿日期:1987-08-31 出版日期:1988-06-01 发布日期:2009-11-25

ANOMALY OF INFORMATION ENTROPY BEFORE GREAT EARTHQUAKES——THE CASE STUDY OF WUQIA EARTHQUAKES

Zhu Ling-ren   

  1. The Seismological Bureau of Xinjiang Uygur Autonomous Region
  • Received:1987-08-31 Online:1988-06-01 Published:2009-11-25

摘要: 在大地震酝育准备过程中,总是出现种种小地震活动的异常,如条带、空区,成丛、成串等。这些异常从不同角度反映了小地震(微破裂)活动随机性的降低、有序度的增加。本文引入信息熵的概念,定量地研究大震前小震活动从无序到有序的演化,以1983年2月和1985年8月乌恰6.8和7.4级地震为例,表明震前地震信息熵确有明显异常。

关键词: 新疆, 乌恰, 信息熵, 地震

Abstract: The small earthquake activity often presents various anomaly, such as strip, gap, crowd and string etc., during preparing process of a great earthquake. The anomaly reflects the decreasing randomness and the increasing orderness for the samll earthquake activity(microfracture). Here the envolution of small earthquake activity from dis-order to order before great earthquake is studied quantitatively by introducing the concept of information entropy.

Key words: Xinjiang, Wuqia, Information entropy, Earthquake