吉林台网测震台站监测效能评估
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摘要
由于种种原因,台站地震计的固有周期、阻尼、灵敏度、观测动态范围等参数和台基噪声在运行的过程中会发生变化。本文用阶跃标定和计算观测动态范围、台基噪声功率谱的方法,得到吉林测震台网各台站地震计参数和台基噪声的变化情况,掌握吉林测震台网各台站的监测能力,为以后吉林测震台网的建设和发展提出建议。
For all kinds of reasons, the parameters of a seismometer, such as natural period, damping, sensitivity, observational dynamic range, and station base noise will change during observing. In this paper, using methods of step calibration, calculation of observational dynamic range and station base noise power spectrum, variations of seismometers' parameters and station base noise of stations were obtained, the observational ability of stations were known well. That can offer a proposal for Jilin Seismic Network to improve observational ability.
For all kinds of reasons, the parameters of a seismometer, such as natural period, damping, sensitivity, observational dynamic range, and station base noise will change during observing. In this paper, using methods of step calibration, calculation of observational dynamic range and station base noise power spectrum, variations of seismometers' parameters and station base noise of stations were obtained, the observational ability of stations were known well. That can offer a proposal for Jilin Seismic Network to improve observational ability.
引文
[1]朱小毅,林湛,等.地震计阶跃标定自动处理算法研究[J].地震地磁观测与研究,2010,31(1):43-48.
[2]中国地震局监测预报司.数字地震观测技术[M].北京:地震出版社,2003:140-144.
[3]何彦,王宝柱,等.新疆数字地震台站观测动态范围和台基噪声的分析[J].内陆地震,2006,20(2):178-182.
[4]童汪练.国家数字地震台网台站地动噪声频谱分析报告[R].北京:2000.
[5]张宇,康建红,等.吉林测震台网数字台站台基噪声功率谱分析[J].地震地磁观测与研究,2013,34(3-4):118-121.
[2]中国地震局监测预报司.数字地震观测技术[M].北京:地震出版社,2003:140-144.
[3]何彦,王宝柱,等.新疆数字地震台站观测动态范围和台基噪声的分析[J].内陆地震,2006,20(2):178-182.
[4]童汪练.国家数字地震台网台站地动噪声频谱分析报告[R].北京:2000.
[5]张宇,康建红,等.吉林测震台网数字台站台基噪声功率谱分析[J].地震地磁观测与研究,2013,34(3-4):118-121.
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