气温、降雨对巴里坤水平摆观测的影响分析  

STUDY OF RAINFALL AND AIR TEMPERATURE EFFECT ON HORIZONTAL PENDULUM AT BARKOL SEISMIC STATION

作　　者：孔静静 高朝军[1] 侯赛因.赛买提 周康云 KONG Jing-jing,GAO Chao-jun,Housaiyin Saimaiti,ZHOU Kang-yun(Barkol Seismic Station of Earthquake Agency of Xinjiang Uygur Autonomous Region, Hami 839000, Xinjiang, China)

机构地区：[1]新疆维吾尔自治区地震局巴里坤地震台,新疆哈密839000

出　　处：《内陆地震》2018年第2期119-127,共9页Inland Earthquake

摘　　要：选取2011~2016年巴里坤水平摆观测资料及降雨、气温数据,采用形态法、年变曲线、相关和回归分析方法,研究了气温、降雨对巴里坤水平摆的干扰特征及机理。结果表明:(1)持续降雨可造成巴里坤水平摆月频段和日频段曲线形态的变化,表现为NS分量加速南倾,EW分量西倾,NS分量较EW分量更易受降雨干扰的影响;(2)通过一般多项式曲线拟合去趋势后,气温和水平摆两分量观测值的相关系数明显变大。与NS分量相关性的显著提高说明巴里坤水平摆NS分量的趋势性异常并非由气温引起;与EW分量相关性的提高说明EW分量的整体西倾与气温无关。(3)通过曲线回归拟合可知,气温是巴里坤水平摆年变频段信息的重要影响因素,EW分量与气温的回归拟合结果优于NS分量。Based on the horizontal pendulum data of Barkol seismic station from 2011 to 2016,with the methods of morphology,annual variation curve and correlation and regression analysis,explore the characteristics and mechanism of the influence of air temperature and rainfall on the Barkol horizontal pendulum. The results show that：（ 1） The continuous rainfall can cause the daily and monthly frequency variation curve of the horizontal pendulum at Barkol seismic station,NS component tilted southward rapidly,and EW component tilted westward,the NS component are more susceptible to the rainfall disturbance.（ 2） After remove trend,correlation coefficient between temperature and observed data obviously increases,the feature is notable to the NS component,which shows that the trend change of the NS component is not related to the change of air temperature. And the improvement of the correlation with the EW component indicates that the overall west dump of the EW component is independent of the temperature.（ 3） The results of curve regression fitting show that the temperature is the important factor of the frequency information of the Barkol horizontal pendulum,and the fitting result of EW component and air temperature is better than NS component.

关 键 词：气温 降雨干扰 相关系数 回归分析 水平摆倾斜仪 

分 类 号：P315.7[天文地球—地震学]