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Research on Very Low Frequency Earthquakes before the Jishishan MS6.2 Earthquake Using Envelope Cross-Correlation Localization Method
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Xiaoyang ZHANG1, Jin DENG1, 2, *, Shuting LI1
Journal of Geodesy and Geodynamics | 2025, 45(1) : 66 - 71
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Journal of Geodesy and Geodynamics | 2025, 45(1): 66-71
Research on Very Low Frequency Earthquakes before the Jishishan MS6.2 Earthquake Using Envelope Cross-Correlation Localization Method
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Xiaoyang ZHANG1, Jin DENG1, 2, *, Shuting LI1
Affiliations
  • 1 Lanzhou Institute of Seismology, CAE, 450 West-Donggang Road, Lanzhou 730000, China
  • 2 Lanzhou Geophysics National Observation and Research Station, 450 West-Donggang Road, Lanzhou 730000, China
  • ZHANG Xiaoyang, postgraduate, majors in slow earthquakes, E-mail:

About Author:

ZHANG Xiaoyang, postgraduate, majors in slow earthquakes, E-mail:

Published: 2025-01-15 doi: 10.14075/j.jgg.2024.03.123
Outline
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Utilizing the envelope cross-correlation method, we localize the very low frequency earthquakes(VLFEs) before the Jishishan MS6.2 earthquake. We conduct preliminary localization over a larger area, followed by precise localization within a smaller area. Analysis by increasing or decreasing the number of stations in different directions from the epicenter reveals that an even distribution of stations in all directions is crucial, effectively reducing localization errors. The localization results indicate that the VLFEs before the Jishishan earthquake were primarily distributed near the fault zone, with their distribution orientation is consistent with the fault direction.

Jishishan earthquake  /  very low frequency earthquake(VLFE)  /  earthquake location  /  envelope cross-correlation
张晓阳, 邓津, 李淑婷. 基于包络互相关定位方法的积石山MS6.2地震前超低频地震研究. 大地测量与地球动力学, 2025 , 45 (1) : 66 -71 . DOI: 10.14075/j.jgg.2024.03.123
Xiaoyang ZHANG, Jin DENG, Shuting LI. Research on Very Low Frequency Earthquakes before the Jishishan MS6.2 Earthquake Using Envelope Cross-Correlation Localization Method[J]. Journal of Geodesy and Geodynamics, 2025 , 45 (1) : 66 -71 . DOI: 10.14075/j.jgg.2024.03.123
  • Project of Lanzhou Geophysics National Observation and Research Station(2021Y02)
  • National Natural Science Foundation of China(51578518)
  • The Youth Science Foundation of Gansu Province(22JR11RA089)
Year 2025 volume 45 Issue 1
16
5
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Article Info
doi: 10.14075/j.jgg.2024.03.123
  • Receive Date:2024-03-21
  • Online Date:2026-10-30
  • Published:2025-01-15
Article Data
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History
  • Received:2024-03-21
Funding
Project of Lanzhou Geophysics National Observation and Research Station(2021Y02)
National Natural Science Foundation of China(51578518)
The Youth Science Foundation of Gansu Province(22JR11RA089)
Affiliations
    1 Lanzhou Institute of Seismology, CAE, 450 West-Donggang Road, Lanzhou 730000, China
    2 Lanzhou Geophysics National Observation and Research Station, 450 West-Donggang Road, Lanzhou 730000, China
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表12种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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