选取2013年松原5.8级震群23个MS≥3.0地震事件，通过地震波的振动持续时间、速度、周期、振幅等，进行震相识别，综合分析发现：该区域土层较厚，且震源相对较浅，面波较发育，波列的振动持续时间较长；地震震相主要以Pn、Sn、Pg、Sg、PmP、SmS为主：其中PmP、SmS震相在震中距70—110 km范围内较易识别；Pn、Sn震相在震中距150 km以上可较清晰的识别，随着震中距增大，Sn震相在震中距350 km以上将不易识别。
In this paper, we collected 23 earthquake waveform (MS ≥ 3.0) of Songyuan M 5.8 earthquake swarm in 2013. We made the phase identification to the collected earthquake waveform through the earthquake duration of vibrations, velocitys, periods, amplitude and so on. By analyses:The waveforms have the amplified activate to amplitude because the soil layer is thicker and the source is relatively shallow. It leads to surface wave development, longer duration of earthquake vibration. Earthquake phase mainly contain Pn, Sn, Pg, Sg, PmP, SmS. PmP and SmS can easily identified between 70 km to 110 km. Pn and Sn can clearly identified after about 150 km. With the increasing of the epicenter distance, the Sn becomes hardly identified after about 350 km.
2018,39(1): 67-72 收稿日期：2017-02-09
DOI：10.3969/j.issn.1003-3246.2018.01.011
基金项目：测震台网青年骨干培养专项（项目编号：20170608）；中国地震局监测、预测、科研三结合课题（项目编号：160703）
作者简介：卢燕红(1982-),女,工程师,从事地震速报与地震编目工作
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