摘要
介绍了丽江地震台新台址勘选过程。使用GL-PS2型一体化地震计进行测点勘选工作,计算分析了2021年12月28日13时至30日12时连续48 h内的地脉动速度均方根值(RMS)和噪声功率谱密度,并对该时段内记录到的天然地震事件进行分析。结果表明,记录到的4次天然地震事件震相清晰易识,拟选台址背景噪声达到Ⅰ类台基噪声水平。综合分析认为,该拟选台址观测环境较好,符合地震台建设要求。
This paper introduces the exploration and selection process of new station site of Lijiang Seismic Station.The GL-PS2 integrated seismometer was used to carry out the site selection survey.The Root Mean Square(RMS)of background noise and power spectrum density of 48 continuous hours from 13:00 on Dec 28 to 12:00 on Dec 30,2021 were calculated,and the natural seismic events recorded in this period were analyzed.The results show that the seismic phases of the four recorded natural earthquake events are clear and easy to recognize,and the background noise level of the station base of the proposed site has arrived at“I-class station base level”.Comprehensive analysis shows that the observation environment of the proposed site is fine and meets the requirements of seismic array construction.
作者
匡泳庄
黑贺堂
吴会梁
顾慧冬
穆志军
KUANG Yongzhuang;HEI Hetang;WU Huiliang;GU Huidong;MU Zhijun(Lijiang earthquake monitoring center station,Yunnan Province 674100,China;Dali Center of China Earthquake Science Experimental Site,Yunnan Province 671000,China)
出处
《地震地磁观测与研究》
2022年第4期73-79,共7页
Seismological and Geomagnetic Observation and Research
关键词
丽江地震台
观测环境
台址勘选
地脉动噪声
功率谱密度
Lijiang Seismic Station
observation environment
station site survey
ground pulsation noise
power spectrum density
