利用短期静态PPP结果反演海潮负荷位移
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摘要
采用香港11个GPS测站的观测资料进行1 h、2 h、3 h和4h静态PPP解算,获得4组PPP坐标序列,利用调和分析求取11个测站处8个主要分潮的负荷位移参数(振幅和相位),将其与海潮模型计算的负荷位移参数进行对比,并比较分析PPP反演值与海潮模型值改正海潮负荷信号的效果。结果表明,垂直和水平方向上,不同PPP结果反演8个分潮的负荷位移分别具有约5 mm和7 mm的差异;PPP反演8个分潮垂向负荷位移优于全球海潮模型,但水平方向上的反演效果稍弱。
In this paper, we first do 1 h, 2 h, 3 h and 4 h static PPP solutions by using short time-scale observation data from 11 GPS stations in Hong Kong, and then 4 sets of PPP coordinate sequences are obtained. Second, ocean tide loading(OTL) displacement parameters(amplitude and phase) of 8 main tidal constituents of 11 stations are obtained by harmonic analysis. Third, the misfits between PPP inversion value and ocean tide model value are analyzed. Finally, we compare the effect of correcting OTL signals by PPP inversion value and ocean tide model value. The results show that in vertical and horizontal directions, the OTL discrepancies of 8 tidal constituents inverted by static PPP with different sampling rates are about 5 mm and 7 mm, respectively; the vertical OTL of 8 tidal constituents by static PPP are better than global ocean tide model, but in horizontal direction the OTL signals inverted by static PPP are slightly weaker.
In this paper, we first do 1 h, 2 h, 3 h and 4 h static PPP solutions by using short time-scale observation data from 11 GPS stations in Hong Kong, and then 4 sets of PPP coordinate sequences are obtained. Second, ocean tide loading(OTL) displacement parameters(amplitude and phase) of 8 main tidal constituents of 11 stations are obtained by harmonic analysis. Third, the misfits between PPP inversion value and ocean tide model value are analyzed. Finally, we compare the effect of correcting OTL signals by PPP inversion value and ocean tide model value. The results show that in vertical and horizontal directions, the OTL discrepancies of 8 tidal constituents inverted by static PPP with different sampling rates are about 5 mm and 7 mm, respectively; the vertical OTL of 8 tidal constituents by static PPP are better than global ocean tide model, but in horizontal direction the OTL signals inverted by static PPP are slightly weaker.
引文
[1] 刘经南,张化疑,刘焱雄,等.GNSS研究海潮负荷效应进展[J].武汉大学学报:信息科学版,2016,41(1):9-14(Liu Jingnan,Zhang Huayi,Liu Yanxiong,et al.Progress of Ocean Tide Loading Inversion Based on GNSS[J].Geomatics and Information Science of Wuhan University,2016,41(1):9-14)
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[8] King M A,Penna N T,Clarke P J,et al.Validation of Ocean Tide Models around Antarctica Using Onshore GPS and Gravity Data[J].Journal of Geophysical Research:Solid Earth,2005,110(B8)
[9] 吴志露,刘焱雄,何秀凤,等.基于近岸海岛GPS数据反演海洋分潮负荷影响[J].地球物理学报,2017,60(1):61-69(Wu Zhilu,Liu Yanxiong,He Xiufeng,et al.Inversion of Ocean Tidal Loadings of Marine Constituents Based on the GPS Measurements in the Offshore Islands[J].Chinese J Geophys,2017,60(1):61-69)
[10] 郑凯,马兰,季伟,等.利用PPP反演海潮负荷位移参数[J].大地测量与地球动力学,2015,35(3):485-489(Zheng Kai,Ma Lan,Ji Wei,et al.Estimates of Ocean Tide Loading with PPP Displacements[J].Journal of Geodesy and Geodynamics,2015,35(3):485-489)
[11] 张小红,马兰,李盼.利用动态PPP技术确定海潮负荷位移[J].测绘学报,2016,45(6):631-638(Zhang Xiaohong,Ma Lan,Li Pan.Determination of Ocean Tide Loading Displacements Using Kinematic PPP[J].Acta Geodaetica et Cartography Sinica,2016,45(6):631-638)
[12] 暴景阳,许军.卫星测高数据的潮汐提取与建模应用[M].北京:测绘出版社,2013(Bao Jingyang,Xu Jun.Tide Analysis from Altimeter Data and the Establishment and Application of Tide Model[M].Beijing:Surveying and Mapping Press,2013)
[13] Lefèvre F,Provost C L,Lyard F H.How Can We Improve a Global Ocean Tide Model at a Regional Scale?A Test on the Yellow Sea and the East China Sea[J].Journal of Geophysical Research Oceans,2000,105(C4):8 707-8 725
[14] 李大炜,李建成,金涛勇,等.利用验潮站资料评估全球海潮模型的精度[J].大地测量与地球动力学,2012,32(4):106-110(Li Dawei,Li Jiancheng,Jin Taoyong,et al.Accuracy Estimation of Recent Global Ocean Tide Models Using Tide Gauge Data[J].Journal of Geodesy and Geodynamics,2012,32(4):106-110)
[15] Matsumoto K,Takanezawa T,Ooe M.Ocean Tide Models Developed by Assimilating TOPEX/POSEIDON Altimeter Data into Hydro Dynamical Model:A Global Model and a Regional Model around Japan[J].Journal of Oceanography,2000,56(5):567-581
[2] Farrell W E.Deformation of the Earth by Surface Loads[J].Reviews of Geophysics,1972,10(3):761-797
[3] Farrell W E.Earth Tides,Ocean Tides and Tidal Loading[J].Philosophical Transactions of the Royal Society of Biological Sciences,1973,274(1 239):253-259
[4] 赵红,张勤,黄观文,等.基于不同海潮模型研究海潮负荷对GPS精密定位的影响[J].大地测量与地球动力学,2012,32(5):108-112(Zhao Hong,Zhang Qin,Huang Guanwen,et al.Effect of Ocean Tide Loading on GPS Precise Positioning Based on Different Ocean Tide Models[J].Journal of Geodesy and Geodynamics,2012,32(5):108-112)
[5] Yun H S,Lee D H,Song D S.Determination of Vertical Displacements over the Coastal Area of Korea Due to the Ocean Tide Loading Using GPS Observations[J].Journal of Geodynamics,2007,43(4-5):528-541
[6] Vergnolle M,Bouin M N,Morel L,et al.GPS Estimates of Ocean Tide Loading in NW-France:Determination of Ocean Tide Loading Constituents and Comparison with a Recent Ocean Tide Model[J].Geophysical Journal of the Royal Astronomical Society,2010,173(2):444-458
[7] Allinson C R,Clarke P J,Edwards S J,et al.Stability of Direct GPS Estimates of Ocean Tide Loading[J].Geophysical Research Letters,2004,31(15):121-141
[8] King M A,Penna N T,Clarke P J,et al.Validation of Ocean Tide Models around Antarctica Using Onshore GPS and Gravity Data[J].Journal of Geophysical Research:Solid Earth,2005,110(B8)
[9] 吴志露,刘焱雄,何秀凤,等.基于近岸海岛GPS数据反演海洋分潮负荷影响[J].地球物理学报,2017,60(1):61-69(Wu Zhilu,Liu Yanxiong,He Xiufeng,et al.Inversion of Ocean Tidal Loadings of Marine Constituents Based on the GPS Measurements in the Offshore Islands[J].Chinese J Geophys,2017,60(1):61-69)
[10] 郑凯,马兰,季伟,等.利用PPP反演海潮负荷位移参数[J].大地测量与地球动力学,2015,35(3):485-489(Zheng Kai,Ma Lan,Ji Wei,et al.Estimates of Ocean Tide Loading with PPP Displacements[J].Journal of Geodesy and Geodynamics,2015,35(3):485-489)
[11] 张小红,马兰,李盼.利用动态PPP技术确定海潮负荷位移[J].测绘学报,2016,45(6):631-638(Zhang Xiaohong,Ma Lan,Li Pan.Determination of Ocean Tide Loading Displacements Using Kinematic PPP[J].Acta Geodaetica et Cartography Sinica,2016,45(6):631-638)
[12] 暴景阳,许军.卫星测高数据的潮汐提取与建模应用[M].北京:测绘出版社,2013(Bao Jingyang,Xu Jun.Tide Analysis from Altimeter Data and the Establishment and Application of Tide Model[M].Beijing:Surveying and Mapping Press,2013)
[13] Lefèvre F,Provost C L,Lyard F H.How Can We Improve a Global Ocean Tide Model at a Regional Scale?A Test on the Yellow Sea and the East China Sea[J].Journal of Geophysical Research Oceans,2000,105(C4):8 707-8 725
[14] 李大炜,李建成,金涛勇,等.利用验潮站资料评估全球海潮模型的精度[J].大地测量与地球动力学,2012,32(4):106-110(Li Dawei,Li Jiancheng,Jin Taoyong,et al.Accuracy Estimation of Recent Global Ocean Tide Models Using Tide Gauge Data[J].Journal of Geodesy and Geodynamics,2012,32(4):106-110)
[15] Matsumoto K,Takanezawa T,Ooe M.Ocean Tide Models Developed by Assimilating TOPEX/POSEIDON Altimeter Data into Hydro Dynamical Model:A Global Model and a Regional Model around Japan[J].Journal of Oceanography,2000,56(5):567-581