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Asymmetric High and Steep Valley Slope Ground Motion Response for the Luding MS4.5 Earthquake
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Huaying SONG1, Yunsheng WANG1, *, Jianxian HE1, Yongjiang DU1, Tao TANG1, Haochen WU1
Journal of Geodesy and Geodynamics | 2025, 45(1) : 60 - 65, 71
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Journal of Geodesy and Geodynamics | 2025, 45(1): 60-65, 71
Asymmetric High and Steep Valley Slope Ground Motion Response for the Luding MS4.5 Earthquake
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Huaying SONG1, Yunsheng WANG1, *, Jianxian HE1, Yongjiang DU1, Tao TANG1, Haochen WU1
Affiliations
  • 1 State Key Laboratory of Geohazard and Geoenvironment Protection, Chengdu University of Technology, 1 Dongsan Road, Chengdu 610059, China

    • SONG Huaying, postgraduate, majors in geological engineering and geological hazards, E-mail:

About Author:

SONG Huaying, postgraduate, majors in geological engineering and geological hazards, E-mail:

Published: 2025-01-15 doi: 10.14075/j.jgg.2024.03.100
Outline
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Based on the measured ground motion data of the MS4.5 earthquake in Luding, Sichuan in 2023, we conduct an asymmetric slope time-frequency domain data analysis. The results show that: 1) The PGA amplification factor at monitoring point 1# on the right bank is highest, with horizontal and vertical values of 3.16 to 15.08 and 4.37, respectively. 2) The maximum Arias intensity on the right bank is 2.24 cm/s, and the maximum Arias intensity on the left bank is 0.79 cm/s, indicating that the seismic energy on the right bank is stronger. 3) The dominant frequency distribution of the monitoring points on the right bank of the slope is 2 to 9 Hz, while the dominant frequency on the left bank is 2 to 17 Hz. The energy presented by the seismic amplitude is more concentrated in the horizontal than in the vertical direction. On the right bank of the asymmetric high steep valley slope, the protruding peninsula shaped slope terrain has a stronger response than the straight shaped slope.

Luding MS4.5 earthquake  /  terrain amplification effect  /  Hilbert-Huang transformation  /  slope ground motion  /  high and steep covering layer
宋华英, 王运生, 贺建先, 杜勇江, 唐涛, 吴昊宸. 泸定MS4.5地震不对称高陡谷坡地震动响应. 大地测量与地球动力学, 2025 , 45 (1) : 60 -65, 71 . DOI: 10.14075/j.jgg.2024.03.100
Huaying SONG, Yunsheng WANG, Jianxian HE, Yongjiang DU, Tao TANG, Haochen WU. Asymmetric High and Steep Valley Slope Ground Motion Response for the Luding MS4.5 Earthquake[J]. Journal of Geodesy and Geodynamics, 2025 , 45 (1) : 60 -65, 71 . DOI: 10.14075/j.jgg.2024.03.100
Funding
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  • National Natural Science Foundation of China(41877235)
  • National Key Research and Development Program of China(2017YFC1501000)
Appendix
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Year 2025 volume 45 Issue 1
15
5
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Article Info
doi: 10.14075/j.jgg.2024.03.100
  • Receive Date：2024-03-11
  • Online Date：2026-10-30
  • Published：2025-01-15
Article Data
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History
  • Received：2024-03-11
Funding
National Natural Science Foundation of China(41877235)
National Key Research and Development Program of China(2017YFC1501000)
Affiliations
    1 State Key Laboratory of Geohazard and Geoenvironment Protection, Chengdu University of Technology, 1 Dongsan Road, Chengdu 610059, China
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Citations
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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