单台测震分析与资料交换程序

按照地震台站测震分析处理过程,我们在长城0520DH微机上建立了一套地震分析与资料交换程序。该程序具有分析精度高、操作简便、易于掌握等特点,可供Ⅰ、Ⅱ类地震台站使用。     

ARS软件滤波器在CDSN台站中的扩展应用

在ＣＤＳＮ台站用数字滤波方法对数字地震仪进行抑制噪声滤波,方法简单易行。通过震例检验,把本人新创造的滤波器用ＡＲＳ软件中含有的滤波器相结合,对地震信号的识别有一定的参考意义,有助于提高编辑地震报告的Ｐ波利用率。     

在格陵兰地区地震图上记录到的一个附加震相——i震相的特征

在1976 ～1983 年期间,格陵兰地区共记录到53 个地震.所有的地震资料都用检查地震记录图纸的方式进行了复核审查,得到了该地区Pn ,Pg ,P11(PMP) ,Sn 和Lg 波的走时曲线及其视速度,这些结果与加拿大的走时曲线相一致.发现有9 个地震的11 张地震图上记录到一个附加的i震相.初步研究认为,i 震相的存在与震中距、震源深度和地震方向有关,不过此现象尚须进一步研究.     

Seismogram Analysis and Fitting of Three Earthquakes,West Papua,Recorded at Stations ENH and KMI,China

The S wave velocity structure of the earth below Eastern Southeast Asia has been investigated by analyzing the seismogram from surface wave to multiple depth waves in the time domain and three Cartesian components simultaneously. The wave passes across the front area of subduction zone between the Philippine plate and the Asian plate. The main data are waveform comparisons, instead of the arrival times. The synthetic seismogram is calculated using the GEMINI method. The synthetic seismogram constructed by PREMAN global earth model deviates greatly from the measured one. To solve this problem, corrections are needed for the β speed structure. Corrections cover the gradient change of βh, which turns from negative to positive in upper mantle layers as in the PREMAN, change of earth crust depth and change of zero order coefficients of β velocity function in all earth mantle layers. So, the fitting is obtained, as well as the arrival time or the waveform of Love and Rayleigh surface waves, the S wave and the repetitive depth waves ScS2 and ScS3. This result reveals that the Southeast Asia, being stretched due to tectonic release, has a mantle in some parts with negative anomaly of S wave velocity and vertical anisotropy in all earth mantle layers.     

太原盆地小地震时间序列A(b)-N法之研究

通过山西太原基准地震台测震和遥测台网记录的小地震，运用A(b)-N法以太原盆地为窗口，对太原盆地及周边地区1989年至2002年7月发生的3．6级以上的地震进行分析。结果表明，地震与异常的对应率约60％，说明此方法对今后地震预报的研究似有一定的参考价值。     

1995年1月克孜尔水库小震群考察研究

１９９５年１月２日至２月５日在克孜尔水库０～１ｋｍ范围内发生了４０次小震。通过对小震群记录资料分析研究及实地考察，找到了发生小震群的原因。     

Seismogram Analysis of Earthquake C060394F,South Java: S-wave Velocity Structure

The S wave velocity structure between the hypocenter of C060394F earthquake,South Java and a series of observatory stations located in Australia and South-East Asia have been investigated through seismogram analysis in the time domain and the three Cartesian components.The synthetic seismogram is constructed from the PREMAN global earth model.Seismogram comparison between the measured and synthetic seismograms shows large discrepancies.A correction to the S wave velocity structure is needed to solve these d...     

Seismogram Analysis of Indonesian Earthquakes at DAV Observation Station

The S-wave velocity across the earth structure under Indonesia for Indonesia earthquakes has been investigated through seismogram analysis, simultaneously in the time domain and three Cartesian components. The data were recorded at DAV observational station, the Philippines. The main data set is the seismogram comparison between the measured and synthetic seismogram, instead of travel time data, as commonly used in other seismological research. The synthetic seismogram is calculated using the GEMINI method, which is equivalent to Mode Summation. The above seismogram comparison shows that the global earth mantle of PREMAN gives a deviating synthetic seismogram and has earlier arrival times than those of the measurement. The gradient of β_h in the upper mantle layers is altered into a positive, rather than negative slope as stated in the PREMAN model, and negative corrections are imposed to the zero order of the polynomials coefficients in all earth mantle layers. The excellent fitting, as well as travel time or waveform, is obtained from the surface waves of Love and Rayleigh, surface wave to the S and SS mantle waves as well as the core reflected waves. This result expresses that part of the earth mantle, due to a collision between India and Asia tectonic released zones, has a negative anomaly in S-wave velocity and vertical anisotropy in all of the earth mantle layers.     

巧用画图板进行图象格式转换

介绍了通过使用Ｗｉｎｄｏｗｓ９ｘ系统的画图板将屏幕上显示的地震时空图象快速转换成ＢＭＰ通用图象格式的方法。     

两岸地震记录交流初探

本文指出了海峡两岸在测量地震震级中存在的差异，并对此开展深入研究，提出了建议。