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确定地震初至时间的计算机方法 (Computer methods for determining seismie first arrival times),P。J Hatherly (R—14) 在大多数地震资料处理和解释程序中使用初至时间。尽管许多程序常用计算机处理,但初至时间主要还靠人工拾取。如果获的了冗长的数据,人工拾取就格外费时。以前,研究拾取初至时间的计算机方法包括互相关法和相干法。这些方法逐道地寻找地震脉冲波形的相似性,并己成功地与地震反射和深层折射资料一起使用。然而,由于浅层地震脉冲形状从一道到另一道可以有较大的变化,故应用这些方法精确地确定脉
Computer methods for determining seismie first arrival times, p. J Hatherly (R-14) uses the first arrival time in most seismic data processing and interpretation procedures. Although many programs commonly use computer processing, the first arrival time is mainly based on manual picking. If you get the lengthy data, manual picking is particularly time-consuming. In the past, computerized methods of studying the first arrival time included cross-correlation and coherence. These methods look for the similarities of seismic pulse shapes on a per-channel basis and have been successfully used with seismic reflection and deep refraction data. However, since shallow seismic pulse shapes can vary widely from one to another, these methods should be used to accurately determine the pulse