固体潮磁带记录的重取样及强地震干扰的消除

李鸿吉

摘要: 本文讨论取样间距为5s的固体潮磁带数据的重取样及消除强地震干扰的方法.所提出的多项式拟合平滑取样方法(PFSS)使读带、平滑、取样同步进行.读带一结束,计算机内存就有了按给定间距的取样结果.由于只对有关点作格式变换和预处理,故可以节省计算时间;由于只存取样结果,故可以节省计算机空间.因此,这种方法适用于小间距而延续时间长的固体潮磁带数据.采用功率谱分析,并对PFSS方法的结果作了检验,证明这种方法具有良好的滤波功能.为了消除强地震干扰所引起的畸变,采用Nakai方法并给出迭代程序,也用谱分析作了检验.校正后的观测数据,其谱分析结果与理论潮结果相似.

Abstract: In this paper, the re-sampling of tidal tape data at 5-second intervals and the method of elimination of strong earthquake noise are discussed.The polynomial fit smooth sample (PFSS) method is given in this paper. The PFSSsynchronizes tape reading, smoothing and sampling. The memory of the computer has already had sampling results in the light of the given interval as soon as the tape reading finishes. Since format translation and preprocessing are performed for the relevant points, computer time is minimized. And since only sampling results are stored, less computer space is required. So the PFSSis usefull for processing of tidal tape data of small interval and long duration.In order to check the results of the PPSS, analysis of power spectra is used. The calculated example shows that the PFSShas a good filtering function.Nakai method is used to eliminate distortion caused by a strong earthquake and an iterated procedure is given. The calculated results are checked by analysis of power spectra, top. The results of spectral analysis of observed data which have been corrected for earthquake noise are similar to the results of theoretical tide analysis.

[1] 陈冬生、李瑞浩、傅兆珠、翩大西,固休潮观侧数据中惜误数据的自动以别与改正,地壳形变与地震,4,42——46, 1984,

[2] Becker, M. De, B. Ducarme, Sampling and p:e——processing of tidal data of one minute interval,BIM, 91, 5992——5996, 1984.

[3] Godin, G., The analysis of tides, University of Toronto Press, 1972.

[4] Jetjsch, G., Automatic treatment and pre——processing of tidal data recorded at 1 min. intervals,BIM, 85, 5415——5424, 1981.

[5] 李鸿吉、薛恩、吴勇强,最佳数字滤波器及其应用,地震地质,1, 79——89, 1979.

[6] Melchior, P., The tides of the p:anet earth (second edition), Pergamon Press, Oxford, 1983.

[7] Nakai, S., Pre——processing of tidal data, BIM, 75, 4334一4340, 1977.

[8] Nakai, S., Revised method of the pre——processing of tidal data, BIM, 81, 4955——4961, 1979.

[9] Nakai, S,On the interpolation of interruption in tidal record, BIM, 85, 5457——54GG, 1981

[10] Plag, H. P., and Jahr, t,On processing of earth tidal data, BIM. 89, 5759——5786, 1983.

期刊类型引用(9)

1.	罗超，曹晓雨，高阳，徐飞，徐旸，王昊. 基于物理震源模型的跨断层隧道地震响应分析方法. 振动与冲击. 2024(22): 293-304 . 百度学术
2.	宗周红，林元铮，林津，黎雅乐. 跨断层地震动及其对桥梁结构影响研究进展. 中国公路学报. 2023(01): 80-96 . 百度学术
3.	巴振宁，赵靖轩，张郁山，梁建文，张玉洁. 基于GP14.3运动学混合震源模型和SPECFEM 3D谱元法的宽频地震动模拟. 地球物理学报. 2023(03): 1125-1138 . 百度学术
4.	王玉婕，张丽芬，孙晓丹，赵艳南，李井冈. 2022年四川泸定M_S6.8地震近场强震动模拟. 大地测量与地球动力学. 2023(05): 441-446+516 . 百度学术
5.	张凡，李帅，王景全. 跨倾滑正断层桥梁地震响应数值模拟. 建筑结构学报. 2022(05): 205-216 . 百度学术
6.	曹泽林，陶夏新，陶正如，王可意. FK法合成地震动的频带范围研究. 地震学报. 2022(01): 145-157 . 本站查看
7.	党鹏飞，刘启方，王冲，夏松林. 地震动随机有限断层模拟方法综述. 地震工程与工程振动. 2020(06): 131-139 . 百度学术
8.	曹泽林，陶夏新. 基于频率波数域格林函数的宽频带地震动合成方法综述. 地震工程与工程振动. 2018(05): 33-40 . 百度学术
9.	高阳，潘华，汪素云. 中强地震随机有限断层模型应力降参数的确定方法. 震灾防御技术. 2014(04): 733-747 . 百度学术