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地温、气温、气压对精河台水平摆观测的影响
邢喜民,孙吉泽,高丽娟
新疆维吾尔自治区地震局,乌鲁木齐市新市区科学北路338 号830011
摘要:
形变台站观测的目标值是地球内力所导致的形变变化。由于形变台站建立在地壳表层,不可避免地要受到各种因素的影响,这也就意味着在观测值序列中不同程度上包含了来自地球外部的信息。为了更好地研究精河台水平摆观测数据中所包含的地球内力所导致的形变,本文分析了地温、气温、气压对精河台水平摆观测值的影响。结果表明,(1)地温和气温是影响精河台水平摆观测值序列年变化的主要因素,其间具有准线性关系; (2)通过直线拟合去掉趋势性变化之后,观测值与气象因素的线性相关性明显增强,说明观测值序列的趋势变化不是气象因素造成的。
关键词:  分段回归  水平摆  相关系数  回归方程
DOI:
分类号:
基金项目:中国地震局2015 年度震情跟踪合同制项目(2015010225)资助
Analysis on the influence of earth temperature, atmospheric temperature,pressure on the Jinghe station horizontal pendulum data
Xing Ximin Sun Jize Gao Lijuan
Earthquake Administration of Xinjiang Uygur Autonomous Region,Urumqi 830011,China
Abstract:
Deformation station observation target is the earth’s internal force caused by deformation change. As the deformation stations are set up in the earth’s crust surface,they are inevitably influenced by various factors,which means the observation sequence may contain information from outside the earth to different degrees. In order to better study the deformation information caused by the earth internal forces contained in Jinghe station horizontal pendulum, the paper studies the impact on the Jinghe station horizontal pendulum observations in ground temperature,air temperature and air pressure. The research shows that: (1) Ground temperature and air temperature are the main impact factors in the annual change of Jinghe station horizontal pendulum and show a quasi-linear relationship among them. (2) After fitting a straight line to remove trend,linear correlation between observed data and meteorological factors obviously increases,which is not a meteorological factor change.
Key words:  Piecewise regression analysis  Horizontal pendulum  Correlation coefficient  Regression equation