Academic Journal of Environment & Earth Science, 2025, 7(4); doi: 10.25236/AJEE.2025.070405.
Tao Fangyu1, Zhu Houlin1, He Kang1, Zhou Zhi2, Xiong Siceng2
1Lu'an Earthquake Monitoring Center Station, Lu'an, Anhui, 237300, China
2Anhui Seismological Bureau, Hefei, Anhui, 230031, China
This study analyzes continuous gravity observations from the Huaibei GPhone gravimeter (2010-2015) through systematic data processing and quality assessment. The raw data were preprocessed using TSoft software to eliminate tidal components (solid earth tide, ocean tide loading, polar motion correction) with local atmospheric pressure compensation and segmented drift fitting, yielding refined non-tidal signals. A tripartite evaluation framework incorporating conventional assessment, Nakai statistical testing, and harmonic analysis was implemented to examine data quality and anomalous deformation patterns. Key findings reveal: (1) Distinct seasonal variations in tidal gravity signals, particularly in the M2 wave component showing amplitude stability within 0.001; (2) Primary interference factors including power outages (causing 12-72 hour data gaps), pendulum adhesion events (inducing 0.5-1.2 μGal offsets), anthropogenic disturbances (generating 0.3-5.0 μGal noise), and typhoon impacts (correlating with 0.8-1.5 μGal deviations). Comparative analysis with superconducting gravimeter data confirms the GPhone's reliability under normal conditions (DRMS <0.2 μGal), though extreme weather resilience requires improvement. This work establishes a reference protocol for environmental noise identification in spring gravimeter observations.
Continuous Gravity Mass Assessment, Interference Characteristics, High-Frequency Information
Tao Fangyu, Zhu Houlin, He Kang, Zhou Zhi, Xiong Siceng. Study on Observation Results and Interference Characteristics of Huaibei Station Gphone Gravimeter 2010-2015. Academic Journal of Environment & Earth Science (2025), Vol. 7, Issue 4: 41-48. https://doi.org/10.25236/AJEE.2025.070405.
[1] Sun Heping, Xu Houze, Xu Jianqiao, et al. Observation of the tidal changes of the gravitational field and its study [J]. Progress in Earth science, 2000, 15 (1): 53-57.
[2] Dehant V, Defraigne P, Wahr J. Tides for a convective Eatrth[J]. Journal of Geophysical Research, 1999, 104(B1): 1035-1058.
[3] Daniel Chan. Preprocessing and analysis of solid tide observation data of Wuhan Jiufeng tai superconducting gravimeter [D]. The Graduate School of the Chinese Academy of Sciences, 2003.
[4] Sun Heping, Xu Houze, Tao Guoxiang, et al. Earth tidal constants with superconducting gravitometers [J]. Crustal deformation and earthquake, 1997, 17 (4): 17-25.
[5] Sun Heping. The Atmospheric gravity Grynynn's function [J]. Scientific Bulletin, 1997, 42 (15): 1640-1646.
[6] VXu Weimin, Chen Shi, Gao Mengtan, et al. A preliminary analysis of the non-tidal characteristics of Chinese mainland gravitational field [J]. Progress in Geophysics, 2012, 27 (3): 861-871.
[7] Zhong Jimao, Guan Yumei, Yang Jinling. The activity characteristics of Typhoon Madm were studied with the continuous gravity data of Fujian province [J]. Journal of Earthquake Engineering, 2015, 37 (12): 1092-1094.
[8] Tao Fangyu, Lu Dongliang, Wang Fei, et al. Analysis and judgment of data characteristics of Huaibei Taiwan gPhone gravimeter [J]. Geodey and geodynamics, 2017, 37 (added 1): 62-65.