【摘要】 利用山东数字化测震单台三分向记录,选择2种测定地震方位角方法和7种数据预处理方法,通过对实际结果的系统对比分析,确定了最佳的测定地震方位角的技术方案和适于地震预警的测震台站。对测定震中距和震级的方法进行了改进,得到了最佳的根据直达P波前2s波形的包络特征参数求震中距、峰值速度的统计关系,以及根据包络特征参数求震级的标度关系。快速测定震中距和震级方法在实时地震预警中具有应用前景。更多还原

【Abstract】 Based on initial motions of the three-component P wave data recorded at a single station in Shandong Seismic Network,compared with actual results,we established the optimum technical scheme of measuring earthquake azimuth and the stations applying to earthquake early warning from two kinds of measuring earthquake azimuth methods and seven kinds of data preprocessing methods.We improved the method of determining earthquake magnitude and epicenter distance,and got the best statistical relation between epicenter distance and peak velocity using envelop characteristic parameters of 2s waveforms before the P arrivals.We also got magnitude scaling relation based on the envelope characteristic parameter.The quick measuring method for earthquake epicenter and magnitude exhibits practical application prospect in real-time earthquake early warning.更多还原