摘要
本文选取了恩施地震台STS-2.5和CTS-1两台地震计2015年全年连续波形数据,计算其观测记录功率谱密度PSD和概率密度函数PDF,并对比两台地震计的计算结果,以分析总结恩施地震台测震背景噪声特征。结果显示:仪器观测频带内整体噪声处于正常水平,年变化形态不明显;高频部分受人文噪声影响,具有明显的日变特征;低频部分噪声较小,但受仪器自噪声影响,数据可能失真。
Using the continuous waveform data of the year of 2015 observed by STS-2.5 and CTS-1 seismometers,The PSDs(power spectrum density)and PDFs(probability density function)were calculated and compared to acquire the characteristics of the background noise of Enshi station.The conclusions were made:In the frequency band of observation,the background noise is in normal level.The high frequency band is under cultural disturbances.The low frequency band is quieter,but is influenced by the self-noise of seismometer.
出处
《科学技术创新》
2021年第18期122-125,共4页
Scientific and Technological Innovation
基金
中国地震局地震研究所所长基金(IS201526238)。
