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Water Level and Temperature Anomalies Preceding the 2016 Cangwu M5.4 Earthquake in Guangxi
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Shuanglong QIN1, Ziyan WANG1, Chunheng YAN2, Peichan MO2, Xuan GONG3, Xuyu HONG1, *
Journal of Geodesy and Geodynamics | 2026, 46(2) : 194 - 200
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Journal of Geodesy and Geodynamics | 2026, 46(2): 194-200
Water Level and Temperature Anomalies Preceding the 2016 Cangwu M5.4 Earthquake in Guangxi
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Shuanglong QIN1, Ziyan WANG1, Chunheng YAN2, Peichan MO2, Xuan GONG3, Xuyu HONG1, *
Affiliations
  • 1 Fujian Earthquake Agency, Fuzhou 350003, China
  • 2 Earthquake Agency of Guangxi Zhuang Autonomous Region, Nanning 530022, China
  • 3 Guangdong Earthquake Agency, Guangzhou 510070, China
Published: 2026-02-15 doi: 10.14075/j.jgg.2025.02.056
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This study employs the probability density distribution method to extract and analyze high-frequency anomalies from digital water level and temperature records preceding the 2016 Cangwu M5.4 earthquake in Guangxi. The findings reveal: 1) Approximately 18 months pre-earthquake, five monitoring wells exhibited distinct high-frequency water-level anomalies demonstrating significant temporal synchronicity; 2) During 1-2 months prior to the event, two wells displayed pronounced short-term high-frequency anomalies, likely indicating a dynamic transition from regional stress accumulation to impending instability; 3) Spatially, anomalous points clustered predominantly along the SW direction of the epicenter, aligning with regional seismotectonic features. Most anomalies showed high spatial concentration consistent with the NW-SE oriented regional compressive stress field. This research establishes a viable methodology for identifying precursory anomalies in fluid monitoring data before moderate-to-strong earthquakes in south China.

Cangwu M5.4 earthquake  /  probability density distribution method  /  digital water level and temperature  /  high-frequency information
秦双龙, 王紫燕, 阎春恒, 莫佩婵, 龚萱, 洪旭瑜. 2016年广西苍梧5.4级地震前水位水温异常分析. 大地测量与地球动力学, 2026 , 46 (2) : 194 -200 . DOI: 10.14075/j.jgg.2025.02.056
Shuanglong QIN, Ziyan WANG, Chunheng YAN, Peichan MO, Xuan GONG, Xuyu HONG. Water Level and Temperature Anomalies Preceding the 2016 Cangwu M5.4 Earthquake in Guangxi[J]. Journal of Geodesy and Geodynamics, 2026 , 46 (2) : 194 -200 . DOI: 10.14075/j.jgg.2025.02.056
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Year 2026 volume 46 Issue 2
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Article Info
doi: 10.14075/j.jgg.2025.02.056
  • Receive Date：2025-02-27
  • Online Date：2026-10-29
  • Published：2026-02-15
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History
  • Received：2025-02-27
Funding
Affiliations
    1 Fujian Earthquake Agency, Fuzhou 350003, China
    2 Earthquake Agency of Guangxi Zhuang Autonomous Region, Nanning 530022, China
    3 Guangdong Earthquake Agency, Guangzhou 510070, China
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https://castjournals.cast.org.cn/joweb/ddcl/EN/10.14075/j.jgg.2025.02.056
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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
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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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