大气降水对数字化地倾斜观测干扰特征分析  

ANALYSIS OF DISTURBANCE CHARACTERISTICS FROM RAINFALL ON TILT TIDE DEFORMATION AT WUHAN SEISMOSTATION

作　　者：孙伶俐[1] 罗俊秋[1] 龙涛[2] 

机构地区：[1]中国地震局地震研究所,武汉430071 [2]华中科技大学计算机学院,武汉430074

出　　处：《大地测量与地球动力学》2010年第A01期105-110,共6页Journal of Geodesy and Geodynamics

基　　金：中国地震局地震研究所所长基金(6086);中国地震局三结合课题(22004041828)

摘　　要：对武汉基准地震台倾斜固体潮观测资料的研究表明,固体潮曲线畸变是降雨渗透使基岩膨胀的结果。降雨对记录曲线的影响主要表现在:1)时间上具有同步效应。降雨发生后倾斜仪的NS分量发生南倾,EW分量发生东倾;2)量级上受降雨干扰严重的主要为NS分量,EW分量受干扰程度较轻;3)垂直摆受降雨的干扰程度比水管仪的大。The disturbance patterns of the tihmeter observation of VS and DSQ at Wuhan station during the period of ＂Tenth Five Year Project＂ were studied. It is found that the rainfall and other factors may have the serious effect on the tide distortions. By analyzing the abnormal phenomena of the tilt tide curves, it seems that above anomalies arised from rainfall osmosis bringing about the expansion of base rock. It can be seen that there is a close correlation between the tile tide aberration and rainfall. The disturbance curve configuration is complicated and of 3 types. On the view of time there is synchronization that the NS component of tilemeter trends to S as well as the EW component to W after the rainfall. On the view of quantity it is found that NS component is disturbed by rainfall more seriously than EW component as well as VS tiltmeter is disturbed by rainfall more seriously than DSQ tiltmeter.

关 键 词：大气降水 倾斜固体潮 干扰特征 相关性 机理分析 

分 类 号：P315.725[天文地球—地震学]