摘要
本文认为云南破坏性地震与降水和地面气温之间有着密切的关系。在雨季,震中位于发震前一月内降水分布高值中心附近,发震前半月内震中均有中雨以上的降水出现,且其中出现大～暴雨的概率为60%,发震前一月内震中降水量比同期多,年平均值偏高,震前半月内地面平均气温距平值的高值中心总是位于震中附近。而在干季则恰恰与此相反,即震中位于降水分布低值区,发震前后降水都很少,震中降水量比同期多年平均偏低,震前半月内地面平均气温距平值的高值中心总是位于震中下风方向约120km处。这些结果对提高震前短期预报水平具有现实意义。
In this paper a close relationship between destructive earthqaukes and rainfall and atmospheric temperature in Yunnan Area is presented. During the rainy season, epicenters were located comewhere around the distributive center of high rainfall values in one month before the events. And in 15 days before them, the rainfall level was over the moderate, with a 60% probability of large rainstorm. In 30 days before them the amount of rainfall was higher than the average in the same period over the years. In 15 days before them, the high value center of average temperature anomalies was always located around epicenters. It was on the contrary in the dry season, i. e. epicenters would be in an area with tow rainfall distribution, less amount of rainfall before and after the events, and lower values compared to the same period over the years, and the high value center of average temperature anomalies was always located about 120 km downward. Those results might have practical significance in upgrading the short-term earthquake prediction level.
出处
《地震研究》
CSCD
北大核心
1993年第2期148-155,共8页
Journal of Seismological Research
基金
云南省科委应用基础研究基金的资助(项目号90A026)
关键词
地震预报
地震
降水
气温
气象要素
Earthquake prediction
Rainfall distribution
Temperature anomaly value
Yunnan Area
