荷载变化对张家口地震台伸缩仪异常的定量分析  

Quantitative Analysis of Load Variation on Telescopic Meter Anomaly of Zhangjiakou Station

作　　者：侯晓真 屈曼[1,2] 马栋 陈建国[1,2] 高晨 周亚[4] 王曰风 HOU Xiaozhen;QU Man;MA Dong;CHEN Jianguo;GAO Chen;ZHOU Ya;WANG Yuefeng(Hebei Hongshan National Observatory on Thick Sediments and Seismic Hazards,Xingtai 054000,China;Hebei Earthquake Agency,Shijiazhuang 050021,China;Innocative Research Team of Hebei Earthquake Agency for Seismographs Calibration,Valuation and Selection of Observation Sites,Shijiazhuang 050021,China;Zhangjiakou Earthquake Monitoring Center,Zhangjiakou 075000,China)

机构地区：[1]河北红山巨厚沉积与地震灾害国家野外科学观测研究站,河北邢台054000 [2]河北省地震局,石家庄050021 [3]河北省地震局测震专业仪器系统检测评估与观测场地遴选创新团队,石家庄050021 [4]张家口地震监测中心站,河北张家口075000

出　　处：《华北地震科学》2022年第4期95-99,共5页North China Earthquake Sciences

基　　金：中国地震局震情跟踪定向工作任务青年课题(2021010214,2022010214);中国地震局地震科技星火计划攻关项目(XH20008)。

摘　　要：为做好震情跟踪及异常性质研判工作,河北地震台联合中国地震台网中心、张家口地震监测中心站进行了详实的现场踏勘,并利用三种荷载计算模型对可能造成该影响的干扰源进行定量计算。根据干扰模型计算结果、干扰与异常出现的时间相关性,综合分析认为:张家口台伸缩仪NS分量记录到的异常变化现象非建筑施工干扰造成,为地壳真实运动的可能性较大。In order to track seismic situation and analyze abnormal properties,Hebei seismic station,China Earthquake Networks Center and Zhangjiakou Earthquake Monitoring Center Station worked together to conduct a detailed site visiting.We use three kinds of three-dimensional load model to quantify the potential interference sources,which may have caused the effect.According to the model calculation result and time correlation between the interference and the occurrence of anomalies,I think that abnormal changes of the extensometer in Zhangjiakou seismostation is not caused by the interference of construction,which is more likely to be the real movement of the earth.

关 键 词：载荷模型 张性变化 趋势转折 伸缩仪 张家口地震台 

分 类 号：P315.725[天文地球—地震学]