用“MISO”法进行井水位观测资料中的气压改正问题  

THE PROBLEM OF AIR PRESSURE CORRECTION IN UNDERGROUND WATER LEVEL DATA BY MISO METHOD

作　　者：符永好[1] 李辉[2] 周坤根 胡延昌[2] 周旭明[3] 

机构地区：[1]云南省地震局 [2]国家地震局地震研究所 [3]国家地震局分析预报中心

出　　处：《地壳形变与地震》1991年第3期7-14,共8页Crustal Deformation and Earthquake

摘　　要：本文将潮汐分析的多道输入单道输出方法(简称MISO法)应用于地下水位观测资料的分析。分析计算结果表明它能够有效地分析和改正气压变化对地下水位的影响。京14井水位观测受气压的影响较严重,长周期部份的最大气压系数为6.67mm/100Pa,最大影响量为246.79mm;短周期部份的最大气压系数为5.42mm/100Pa,最大影响量为32.52mm;经气压改正后的水位调和分析得出Mf波和S_1波的潮汐因子的改正量分别达到70.7％和76.2％。In this paper, MISO method is theoretically studied and firstly used to analyses underground water level data. The results obtained show that MISO method can effectively analyse and correct the air pressure influence on water level. There is rather serious influence in Jing No.14 well. For example, the maximum barometric coefficients of LP-part and SP-part are 6.67mm/100Pa and 5.42mm/100Pa, and their maximum influence can he up to 246.79mm and 32.52mm separately. The differences of tidal factors of wave Mf and S_1 between with and without air pressure correction are 70.7％ and 76.2％.

关 键 词：地震 预测 地下水 观测 水位 

分 类 号：P315.7[天文地球—地震学]