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本文所论震前气象要素异常,是指在破坏性地震发生前一个月里,在震中附近的一定区域内:1.日平均气压,达到历年同日平均气压的最低值;2.日平均气温、日最高气温、日最低气温分别是历年同日平均气温、日最高气温、日最低气温的最高值或最低值;3.日降水(雪)量达到历年同日降水(雪)量的最高值。近几年来突出的震例如表1(据震中区附近气象台、站的资料):
In this paper, the anomalies of the meteorological elements before the earthquake mean that in a month before the devastating earthquake, in a certain area near the epicenter: 1. The mean daily pressure, which reached the lowest of the mean pressure over the same day in previous years; 2. The average daily temperature, The daily maximum temperature and daily minimum temperature are respectively the highest and lowest daily mean temperature, daily maximum temperature and daily minimum temperature of the same day in previous years. 3. Daily precipitation (snowfall) reaches the highest level of precipitation (snowfall) on the same day in previous years. Outstanding earthquakes in recent years, such as Table 1 (based on epicenter near the epicenter, station information):