温泉台体应变观测的影响因素及特征分析  

Analysis of Influencing Factors and Characteristics of Body Strain Observation in Wenquan Station

作　　者：许璐 邢喜民 张治广 XU Lu;XING Ximin;ZHANG Zhiguang(College of Mathematics and Statistics,Yili Normal University,448 Jiefang Road,Yining 835000,China;College of Mathematics and Physics,Xinjiang Institute of Engineering,1350 Aidinghu Road,Urumqi 830023,China)

机构地区：[1]伊犁师范大学数学与统计分院,新疆伊宁市835000 [2]新疆工程学院数理学院,乌鲁木齐市830023

出　　处：《大地测量与地球动力学》2020年第3期327-330,共4页Journal of Geodesy and Geodynamics

基　　金：新疆维吾尔自治区“十三五”重点学科(数学)开放课题(XJZDXK-M2017003);中国地震局地震科技星火计划(XH19049);中国地震局“三结合”课题(CEA-JC/3JH-173103)~~

摘　　要：为定量估计观测序列所包含的各种成分,评定台站的观测环境、观测质量及对地形变的监测能力,加深对观测数据的理解,准确识别震前异常,以温泉台体应变为例,选择体应变、辅助观测及气象三要素等观测数据,利用别尔采夫滤波、小波分析和相关性分析等方法,分析温泉台体应变观测各周期变化的影响因素及特征。结果表明:1)温泉台体应变年周期变化的影响因素可能为钻孔水位,体应变相位滞后水位约31 d;2)气压是温泉台体应变月波的主要影响因素;3)固体潮汐是温泉台体应变日波、半日波的主要影响因素;4)温泉台体应变与水位、气压、固体潮汐等具有较强的线性相关性。To quantitatively estimate the various components contained in the observation sequence,deepen understanding of the physical meaning of observation,evaluate the observation environment,observation quality and monitoring capability of topographic change and seismic topographic change of the station,deepen the understanding of the observation data,and accurately identify the pre-earthquake anomalies,this paper takes the thermal body strain in Wenquan station as an example,selects the observation data of the three elements of thermal body strain in Wenquan station,auxiliary observations and meteorology,and uses the methods of Pertesv’s filtering,wavelet analysis and correlation analysis,etc.The influencing factors and characteristics of the periodic changes of the thermal body strain observation in Wenquan station are analyzed.The results show that:1)The influencing factors of the annual periodic changes of the thermal body strain in Wenquan station may be at the borehole water level,and the thermal spring body strain phase lags the water level by about 31 days.2)Air pressure is the main influence factor of thermal body strain monthly wave in Wenquan station.3)Solid tide is the main influence factor of daily wave and semi-daily wave on thermal body strain in Wenquan station.4)Body strain in Wenquan station has strong linear correlation with water level,air pressure and solid tide.

关 键 词：体应变 相关系数 月波 散点图 别尔采夫滤波 

分 类 号：P315[天文地球—地震学]