地震地磁观测与研究
地震地磁觀測與研究
지진지자관측여연구
Seismological and Geomagnetic Observation and Research
2015年
4期
59-63
,共5页
潮汐变化%相位滞后%仪器零漂%人为干扰%自然干扰
潮汐變化%相位滯後%儀器零漂%人為榦擾%自然榦擾
조석변화%상위체후%의기령표%인위간우%자연간우
tidal variation%phase delay%instrument drift%human disturbance%natural disturbance
对兰州十里店地震台重力观测资料进行分析,发现重力资料受停电、仪器检修干扰较大,在剔除潮汐变化和人为干扰后,重力观测资料显示长期正向漂移趋势.利用Nakai拟合检验发现,2008—2013年的重力数据小于1×10-8/s2拟合残差的逐年增多,表明仪器观测噪声较小,观测资料状态稳定.对重力观测资料进行维尼狄可夫调和分析,确认兰州十里店地震台重力观测潮汐因子较稳定,精度高,映震效果较好.
對蘭州十裏店地震檯重力觀測資料進行分析,髮現重力資料受停電、儀器檢脩榦擾較大,在剔除潮汐變化和人為榦擾後,重力觀測資料顯示長期正嚮漂移趨勢.利用Nakai擬閤檢驗髮現,2008—2013年的重力數據小于1×10-8/s2擬閤殘差的逐年增多,錶明儀器觀測譟聲較小,觀測資料狀態穩定.對重力觀測資料進行維尼狄可伕調和分析,確認蘭州十裏店地震檯重力觀測潮汐因子較穩定,精度高,映震效果較好.
대란주십리점지진태중력관측자료진행분석,발현중력자료수정전、의기검수간우교대,재척제조석변화화인위간우후,중력관측자료현시장기정향표이추세.이용Nakai의합검험발현,2008—2013년적중력수거소우1×10-8/s2의합잔차적축년증다,표명의기관측조성교소,관측자료상태은정.대중력관측자료진행유니적가부조화분석,학인란주십리점지진태중력관측조석인자교은정,정도고,영진효과교호.
In this paper, though the analysis of the gravity observations data at Shilidian Seismic Station in Lanzhou, we found the gravity data suffer significant interference of power failure and maintenance equipment. After eliminating tidal change and human disturbance, the gravity observation data show a long-term positive drift trend. Using the Nakai fitting inspection found the dataless than Fitting residual 1×10-8/s2 increased year by year from 2008 to 2013. This shows that the instrument observation noise is small, the observation data is stable. Through the study of the pooh Dikefu harmonic analysis of observation data. It is affirmed that the tidal factor is relatively stable and high precision of gravity observation at Shilidian Seismic Station.
