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Noise Characteristics and Environmental Impact of GNSS Coordinate Time Series in the Urumqi Region
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Lixia LIU1, Guirong LI1, *, Dongya LIU1, Kui LI1, Qingyuan ZHANG1, GULIZHA·Aierken1
Journal of Geodesy and Geodynamics | 2026, 46(8) : 942 - 948
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Journal of Geodesy and Geodynamics | 2026, 46(8): 942-948
Noise Characteristics and Environmental Impact of GNSS Coordinate Time Series in the Urumqi Region
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Lixia LIU1, Guirong LI1, *, Dongya LIU1, Kui LI1, Qingyuan ZHANG1, GULIZHA·Aierken1
Affiliations
  • 1 Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China
Published: 2026-08-15 doi: 10.14075/j.jgg.2025.12.425
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Taking the Urumqi region characterized by complex tectonic activity and variable environment as a case study, we systematically analyze the noise characteristics and environmental loading impact of GNSS coordinate time series based on multi-year continuous GNSS observations. The results indicate that the regional noise time series are predominantly characterized by a combination model of white noise plus flicker noise or white noise plus power-law noise. The noise amplitude of vertical component is significantly higher than that of the horizontal component, and the spatial distribution exhibits notable heterogeneity. Influenced by seasonal hydrological mass migration and atmospheric loading, the annual signals in the vertical series are largely attributable to environmental loading (> 70%). Moreover, long-term variations in groundwater levels can introduce deviations comparable to tectonic trends. At URU2 station, the cumulative effect over 14.6 years without correction can reach up to ±36.5 mm. The study further reveals the heightened noise complexity and greater disturbance at urban and alluvial stations (URU2 station), highlighting the critical impact of local geological conditions and human activities on station stability.

GNSS coordinate time series  /  noise characteristics  /  environmental impact  /  loading deformation  /  Urumqi  /  maximum likelihood estimation
刘立霞, 李桂荣, 刘东亚, 李奎, 张青远, 古丽扎·艾尔肯. 乌鲁木齐地区GNSS坐标时间序列噪声特征及其环境影响. 大地测量与地球动力学, 2026 , 46 (8) : 942 -948 . DOI: 10.14075/j.jgg.2025.12.425
Lixia LIU, Guirong LI, Dongya LIU, Kui LI, Qingyuan ZHANG, GULIZHA·Aierken. Noise Characteristics and Environmental Impact of GNSS Coordinate Time Series in the Urumqi Region[J]. Journal of Geodesy and Geodynamics, 2026 , 46 (8) : 942 -948 . DOI: 10.14075/j.jgg.2025.12.425
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Year 2026 volume 46 Issue 8
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doi: 10.14075/j.jgg.2025.12.425
  • Receive Date：2025-12-05
  • Online Date：2026-10-30
  • Published：2026-08-15
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  • Received：2025-12-05
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    1 Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China
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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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