地震流动观测防护罩集成优化与效果分析  

Integration Optimization and Effect Analysis of Earthquake Flow Observation Shield

作　　者：宫杰[1] 居海华[1] 鲍海英[1] 立凯 单菡[1] 王佳 Gong Jie;Ju Haihua;Bao Haiying;Li Kai;Shan Han;Wang Jia(Jiangsu Earthquake Administration,Nanjing 210014;Lianyungang seismic station of Jiangsu Province,Lianyungang 222061)

机构地区：[1]江苏省地震局,南京210014 [2]江苏省连云港地震台,江苏连云港222061

出　　处：《震灾防御技术》2020年第4期855-867,共13页Technology for Earthquake Disaster Prevention

基　　金：江苏省地震局青年科学基金项目(201902);徐州市重点研发计划(社会发展)项目(KC20185);地震科技星火计划(XH21011);中国地震局监测、预测、科研三结合课题(3JH-202001035)。

摘　　要：为提升地震流动观测质量,适应恶劣条件下野外长期工作,研制集传感器、供电、通讯网络三大模块于一体的流动观测仪器整体防护罩。利用2套GL-PS2一体化短周期地震仪进行对比观测,一套安装于南京台室内基岩观测墩,另一套配备防护罩浅层掩埋于户外。结果表明新型研制的观测仪整体集成防护罩具有以下优点:①保温性能好,内部环境日温差小于3℃,月温度变化小于5℃。②防水性好,经历多次暴雨大雪天气后,防护罩内部干燥,无水滴或结露现象。③台基噪声略优于室内观测墩。④2台设备相关系数垂直向优于水平向,夜晚优于白天。⑤地震记录波形相关系数均在0.6以上,震级越大,相关性越高,且信噪比差距较小。In order to improve the earthquake flow observation quality,a new seismograph shield is developed.Integrated optimization of sensor,power supply and communication network is able to achieve overall protection,which is adapted to long-term field work under severe conditions.Comparative observation with two GL-PS2 integrated short period seismograph has been done,one is installed on the bedrock observation pier of Nanjing seismic station,the other is shallowly buried out of doors with integrated optimization of shield.The results show that the newly developed observer Shield and integrated protection have the following advantages:①good thermal insulation,internal environment daily temperature difference less than 3℃,monthly temperature change less than 5℃.②good water resistance,and the interior of the protective cover is dry without water drop or condensation after heavy rain and heavy snow.③the noise with integrated protection is slightly better than that of indoor observation pier.④the correlation coefficient of the two is better in the vertical direction than in the horizontal direction,and better in the night than in the day.⑤the correlation coefficients of the waveforms of seismic records are all above 0.6,the larger the magnitude,the higher the correlation,and the difference between the signal to noise ratio is small.

关 键 词：防护罩 整体集成 对比观测 台基噪声 相关系数 信噪比 

分 类 号：P315.7[天文地球—地震学]