一种可靠的强噪声三分量微地震数据初至拾取方法

程一鸣, 李怀良, 庹先国, 王耀彬, 王亚娟, 沈统

A reliable first arrival picking method for high-noise three component microseismic data

Yi-Ming CHENG, Huai-Liang LI, Xian-Guo TUO, Yao-Bin WANG, Ya-Juan WANG, Tong SHEN

图4 采用合成三分量微地震数据的改进算法的拾取实例 a—随机噪声为60%;b—随机噪声为80%;P波的主频为100 Hz,采样间隔为0.25 ms,db10小波基,分解级为3

Fig.4 Picking example of improved algorithm using synthetic 3C microseismic data a—random noise account for 60%;b—random noise account for 80%;principal frequency of P-wave is 100 Hz,sample interval is 0.25 ms,mother wavelet is the db10,decomposition level is 3