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A Study on the Seismogenic Structure of MS4.7 Earthquake in Ar Horqin Banner Based on Machine Learning
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Dongyang PEI1, Fan ZHANG1, *, Juan LI1, Lujun WANG1, Lei WANG1, Fengzhi CUI1, Shaoqi BAI1
Journal of Geodesy and Geodynamics | 2025, 45(5) : 470 - 476
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Journal of Geodesy and Geodynamics | 2025, 45(5): 470-476
A Study on the Seismogenic Structure of MS4.7 Earthquake in Ar Horqin Banner Based on Machine Learning
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Dongyang PEI1, Fan ZHANG1, *, Juan LI1, Lujun WANG1, Lei WANG1, Fengzhi CUI1, Shaoqi BAI1
Affiliations
  • 1 Earthquake Agency of Inner Mongolia Autonomous Region, 80 Jirem Road, Hohhot 010010, China

    • PEI Dongyang, engineer, majorsin earthquake prediction, E-mail:

About Author:

PEI Dongyang, engineer, majorsin earthquake prediction, E-mail:

Published: 2025-05-15 doi: 10.14075/j.jgg.2024.05.260
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Based on continuous waveform data from the MS4.7 earthquake in Ar Horqin Banner on October 15, 2021, for three months post-earthquake, machine learning methods were utilized for picking earthquake phases and associating them. The preliminary machine learning-based earthquake catalog constructed includes 386 seismic events, which is 17 times the number of events in the manual catalog of the Inner Mongolia seismic network for the same period. Subsequently, using the P/S phase arrival time information from the event waveforms, a double-difference location method was applied to precisely locate the aforementioned aftershocks and study the seismogenic structure of the earthquake. The results indicate that the aftershocks of the MS4.7 earthquake in Ar Horqin Banner have two main directions of distribution, nearly NW and nearly NEE, within a 1-5 km range around the mainshock. Based on the relocation results and combined with linear geological structures on the topography, it is suggested that there exists an unidentified hidden faults. The distribution of the 4.7 magnitude earthquake and its aftershocks is primarily controlled by the nearly NW-oriented hidden faults and the nearly NEE-oriented structures.

Ar Horqin Banner MS4.7 earthquake  /  machine learning  /  double-difference location  /  seismogenic structure
裴东洋, 张帆, 李娟, 王禄军, 王磊, 崔丰智, 白少奇. 基于机器学习的阿鲁科尔沁旗MS4.7地震发震构造研究. 大地测量与地球动力学, 2025 , 45 (5) : 470 -476 . DOI: 10.14075/j.jgg.2024.05.260
Dongyang PEI, Fan ZHANG, Juan LI, Lujun WANG, Lei WANG, Fengzhi CUI, Shaoqi BAI. A Study on the Seismogenic Structure of MS4.7 Earthquake in Ar Horqin Banner Based on Machine Learning[J]. Journal of Geodesy and Geodynamics, 2025 , 45 (5) : 470 -476 . DOI: 10.14075/j.jgg.2024.05.260
Funding
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  • Director Fund of Earthquake Agency of Inner Mongolia Autonoumous Region(2023MS05)
  • The Earthquake Tracking Task of CEA(2024010104)
  • The Earthquake Tracking Task of CEA(2022010128)
Appendix
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Year 2025 volume 45 Issue 5
27
11
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Article Info
doi: 10.14075/j.jgg.2024.05.260
  • Receive Date：2024-05-30
  • Online Date：2026-10-30
  • Published：2025-05-15
Article Data
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History
  • Received：2024-05-30
Funding
Director Fund of Earthquake Agency of Inner Mongolia Autonoumous Region(2023MS05)
The Earthquake Tracking Task of CEA(2024010104)
The Earthquake Tracking Task of CEA(2022010128)
Affiliations
    1 Earthquake Agency of Inner Mongolia Autonomous Region, 80 Jirem Road, Hohhot 010010, 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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