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气压对银川基准台重力观测的影响
THE INFLUENCE OF AIR PRESSURE ON THE GRAVETY OBSERVATION IN YINCHUAN STANDARD STATION
【摘要】 分析研究了银川基准台重力非潮汐变化与气压的相关性,结果表明重力非潮汐变化与气压存在较好的负相关。利用两者间高度相关性,对重力潮汐变化、非潮汐变化进行了气压改正,改正前后重力潮汐参数的精度没有显著变化,非潮汐变化漂移稳定,为捕捉地震前兆异常提供了有力的帮助。
【Abstract】 The analysis and study have been done on the correlatability between gravity non-tide change and air pressure,the results show that there is relatively good negative correlation between them.By using the high correlation between them, the air pressure correction has been done on the gravity tide and non-tide changes.Before and after the correction,there aren’t obvious changes in the precision of the gravity tide parameters,but the drift of non-tide change is steady.This may help to catch the precursory anomalies before earthquakes.
【关键词】 重力观测;
气压;
潮汐参数;
非潮汐变化;
相关分析;
前兆异常;
【Key words】 Gravity observation; Air pressure; Tide parameters; Non-tide change; Correlation analysis; Precursory anomaly;
【Key words】 Gravity observation; Air pressure; Tide parameters; Non-tide change; Correlation analysis; Precursory anomaly;
- 【文献出处】 高原地震 ,Plateau Earthquake Research , 编辑部邮箱 ,2008年01期
- 【分类号】P315.726
- 【被引频次】3
- 【下载频次】37