王亚茹,刘晓丹,郭蕾,等. 河北涿鹿ML4.8地震前后单台波速比特征[J]. 华北地震科学,2021, 39(2):87-95. doi:10.3969/j.issn.1003−1375.2021.02.013.
引用本文: 王亚茹,刘晓丹,郭蕾,等. 河北涿鹿ML4.8地震前后单台波速比特征[J]. 华北地震科学,2021, 39(2):87-95. doi:10.3969/j.issn.1003−1375.2021.02.013.
WANG Yaru,LIU Xiaodan,GUO Lei,et al. Temporal Variation of vP/vS at Single Seismic Station before and after Zhuolu ML4.8 Earthquake in 2014[J]. North China Earthquake Sciences,2021, 39(2):87-95. doi:10.3969/j.issn.1003−1375.2021.02.013.
Citation: WANG Yaru,LIU Xiaodan,GUO Lei,et al. Temporal Variation of vP/vS at Single Seismic Station before and after Zhuolu ML4.8 Earthquake in 2014[J]. North China Earthquake Sciences,2021, 39(2):87-95. doi:10.3969/j.issn.1003−1375.2021.02.013.

河北涿鹿ML4.8地震前后单台波速比特征

Temporal Variation of vP/vS at Single Seismic Station before and after Zhuolu ML4.8 Earthquake in 2014

  • 摘要: 2014年9月6日河北涿鹿ML4.8地震打破了晋冀蒙地区长达4年的地震平静。通过收集并整理2008—2019年河北台网的震相数据,挑选涿鹿地震周边数据连续性较好的10个台站,分别计算这10个台站的单台波速比并滑动平均,结合涿鹿地震对其时序特征进行讨论和分析,认为涿鹿地震前SHC台站波速比出现低值—持续—回升—发震这一典型异常形态,与涿鹿地震可能存在一定关系,推断延怀盆地可能是涿鹿地震的孕震区域。

     

    Abstract: The Zhuolu ML4.8 earthquake On September 6, 2014 broke the 4-year calm of earthquakes in the Jinjimeng area. In this paper, we collect seismic phases records from 2008 to 2019 and select 10 stations around Zhuolu ML4.8 earthquake to calculate the wave velocity ratio using Wadati method of single station and average the initial data using moving average model. The wave velocity ratio calculated by the single Shacheng station shows a typical abnormal morphology of beginning at a low data and back to higher value before Zhuolu earthquake, which shows that the Yanhuai Basin, in where Shacheng station located, may be the seismogenic body.

     

/

返回文章
返回