利用GNSS数据分析大港验潮站地壳沉降
|
摘要
青岛大港验潮站的地壳沉降关系到该站平均海平面的绝对变化,因而也就关系到我国高程基准面的变化。本文利用青岛GNSS基准站约10年的观测数据对该站的地壳沉降变化进行分析。首先将青岛GNSS基准站纳入由50个国际IGS站和43个国内陆态网络基准站组成的全球网中,进行单日松弛解和单日约束解解算,获得该站坐标时间序列。然后对该站垂向坐标时间序列进行分析,利用粗差探测、偏差探测、趋势项分析、频谱分析等方法对粗差、偏差、趋势项和周期项进行探测、分析,并通过时间序列模型估计获得时间序列中的周期项振幅和偏差估值。分析表明青岛GNSS基准站垂直方向近一段时间未发现存在显著性的地壳沉降变化,但受到比较明显的周年和半周年周期变化影响。结合青岛大港验潮站验潮数据分析结果得出结论:青岛大港验潮站平均海平面的绝对上升速率是1.62mm/a。
Crustal subsidence at Dagang tidal station affects the Huanghai mean sea level which defines the national height datum.The crustal subsidence at Dagang tidal station located 1.5km away from Qingdao GNSS fiducial station is analyzed,by using approximately 10 years of GNSS observations.Firstly,the daily relax solutions and daily constrained solutions for coordinates of this station are computed in a combined adjustment involving aglobal GNSS net of 50 IGS stations and a regional net of 43 CMONOC stations.Then,a time series spanning 10 years for station coordinates aligned to ITRF2014 is obtained.And next,the time series of height components is analyzed to detect outliers,offsets,trends and frequencies and the amplitudes of periodic parts and the values of offsets are obtained.It is shown that no trend is found in the series.But it is found that the annual and semi-annual signals influence the changes of the series obviously.Finally,it is concluded in combination with the analysis of tidal data for Dagang tidal station that the mean sea level at Dagang tidal station is ascending with a speed of 1.62mm/a.
Crustal subsidence at Dagang tidal station affects the Huanghai mean sea level which defines the national height datum.The crustal subsidence at Dagang tidal station located 1.5km away from Qingdao GNSS fiducial station is analyzed,by using approximately 10 years of GNSS observations.Firstly,the daily relax solutions and daily constrained solutions for coordinates of this station are computed in a combined adjustment involving aglobal GNSS net of 50 IGS stations and a regional net of 43 CMONOC stations.Then,a time series spanning 10 years for station coordinates aligned to ITRF2014 is obtained.And next,the time series of height components is analyzed to detect outliers,offsets,trends and frequencies and the amplitudes of periodic parts and the values of offsets are obtained.It is shown that no trend is found in the series.But it is found that the annual and semi-annual signals influence the changes of the series obviously.Finally,it is concluded in combination with the analysis of tidal data for Dagang tidal station that the mean sea level at Dagang tidal station is ascending with a speed of 1.62mm/a.
引文
[1]郭海荣,焦文海,杨元喜,等.1985国家高程基准的系统差[J].武汉大学学报(信息科学版),2004,29(8):715-719.GUO Hairong,JIAO Wenhai,YANG Yuanxi,et al.Systematic Error of the 1985National Height Datum[J].Geomatics and Information Science of Wuhan University,2004,29(8):715-719.
[2]陈宗镛.计算平均海面的方法[J].山东海洋学院学报,1960(1):65-73.CHEN Zongyong.The Method of Calculating the Mean Sea Level[J].Journal of Ocean Institute of Shandong,1960(1):65-73.
[3]陈宗镛.潮汐学[M].北京:科学出版社,1980.CHEN Zongyong.Tide[M].Beijing:Science Press,1980.
[4]陈俊勇.对我国建立现代大地坐标系统和高程系统的建议[J].测绘通报,2002(8):1-5.CHEN Junyong.On the Chinese Modern Geodetic Coordinate System and Height System[J].Bulletin of Surveying and Mapping,2002(8):1-5.
[5]文援兰,杨元喜.我国近海平均海面及其变化的研究[J].武汉大学学报(信息科学版),2001,26(2):127-132.WEN Yuanlan,YANG Yuanxi.Research on Sea Level and Rising Trend of Coastal Waters in China[J].Geomatics and Information Science of Wuhan University,2001,26(2):127-132.
[6]吴富梅,魏子卿,李迎春.大港验潮站潮汐分析与国家高程基准面变化[J].测绘学报,2015,44(7):709-716.DOI:10.11947/j.AGCS.2015.20140110.WU Fumei,WEI Ziqing,LI Yingchun.Analysis of Tidal Data for Dagang Tidal Gauge and Study of the Changes for the National Height Datum[J].Acta Geodaetica et Cartographica Sinica,2015,44(7):709-716.DOI:10.11947/j.AGCS.2015.20140110.
[7]ALTAMIMI Z,SILLARD P,BOUCHER C.ITRF2000:A New Release of the International Terrestrial Reference Frame for Earth Science Applications[J].Journal of Geophysical Research,2002,107(B10):2214.DOI:10.1029/2001JB000561.
[8]ALTAMIMI Z,COLLILIEUX X,LEGRAND J,et al.ITRF2005:A New Release of the International Terrestrial Reference Frame Based on Time Series of Station Positions and Earth Orientation Parameters[J].Journal of Geophysical Research,2007,112(B9):B09401.DOI:10.1029/2007JB004949.
[9]ALTAMIMI Z,COLLILIEUX X,MTIVIER L.ITRF2008:An Improved Solution of the International Terrestrial Reference Frame[J].Journal of Geodesy,2011,85(8):457-473.DOI:10.1007/s00190-011-0444-4.
[10]明锋,杨元喜,曾安敏,等.顾及有色噪声的GPS位置时间序列中断探测法[J].武汉大学学报(信息科学版),2016,41(6):745-751.MING Feng,YANG Yuanxi,ZENG Anmin,et al.Offset Detection in GPS Position Time Series with Colored Noise[J].Geomatics and Information Science of Wuhan University,2016,41(6):745-751.
[11]KOCH K R,YANG Y.Konfidenzbereiche und Hypothesentests für Robuste Parameterschtzungen[J].Zeitschrift für Vermessungswesen,1998,123(1):20-26.
[12]KOCH K R.Parameter Estimation and Hypothesis Testing in Linear Models[M].Berlin:Springer-Verlag,1988:271-307.
[13]SERGEI N,RODIONOV.A Sequential Algorithm for Testing Climate Regime Shifts[J].Geophysical Research Letters,2004,31(9):L09204.
[14]MING Feng,YANG Yuanxi,ZENG Anmin,et al.Analysis of Seasonal Signals and Long-term Trends in the Height Time Series of IGS Sites in China[J].Science China Earth Sciences,2016,59(6):1283-1291.DOI:10.1007/s11430-016-5285-9.
[15]KENDALL M G.Rank Correlation Measures[M].London:Charles Griffin,1975:202.
[2]陈宗镛.计算平均海面的方法[J].山东海洋学院学报,1960(1):65-73.CHEN Zongyong.The Method of Calculating the Mean Sea Level[J].Journal of Ocean Institute of Shandong,1960(1):65-73.
[3]陈宗镛.潮汐学[M].北京:科学出版社,1980.CHEN Zongyong.Tide[M].Beijing:Science Press,1980.
[4]陈俊勇.对我国建立现代大地坐标系统和高程系统的建议[J].测绘通报,2002(8):1-5.CHEN Junyong.On the Chinese Modern Geodetic Coordinate System and Height System[J].Bulletin of Surveying and Mapping,2002(8):1-5.
[5]文援兰,杨元喜.我国近海平均海面及其变化的研究[J].武汉大学学报(信息科学版),2001,26(2):127-132.WEN Yuanlan,YANG Yuanxi.Research on Sea Level and Rising Trend of Coastal Waters in China[J].Geomatics and Information Science of Wuhan University,2001,26(2):127-132.
[6]吴富梅,魏子卿,李迎春.大港验潮站潮汐分析与国家高程基准面变化[J].测绘学报,2015,44(7):709-716.DOI:10.11947/j.AGCS.2015.20140110.WU Fumei,WEI Ziqing,LI Yingchun.Analysis of Tidal Data for Dagang Tidal Gauge and Study of the Changes for the National Height Datum[J].Acta Geodaetica et Cartographica Sinica,2015,44(7):709-716.DOI:10.11947/j.AGCS.2015.20140110.
[7]ALTAMIMI Z,SILLARD P,BOUCHER C.ITRF2000:A New Release of the International Terrestrial Reference Frame for Earth Science Applications[J].Journal of Geophysical Research,2002,107(B10):2214.DOI:10.1029/2001JB000561.
[8]ALTAMIMI Z,COLLILIEUX X,LEGRAND J,et al.ITRF2005:A New Release of the International Terrestrial Reference Frame Based on Time Series of Station Positions and Earth Orientation Parameters[J].Journal of Geophysical Research,2007,112(B9):B09401.DOI:10.1029/2007JB004949.
[9]ALTAMIMI Z,COLLILIEUX X,MTIVIER L.ITRF2008:An Improved Solution of the International Terrestrial Reference Frame[J].Journal of Geodesy,2011,85(8):457-473.DOI:10.1007/s00190-011-0444-4.
[10]明锋,杨元喜,曾安敏,等.顾及有色噪声的GPS位置时间序列中断探测法[J].武汉大学学报(信息科学版),2016,41(6):745-751.MING Feng,YANG Yuanxi,ZENG Anmin,et al.Offset Detection in GPS Position Time Series with Colored Noise[J].Geomatics and Information Science of Wuhan University,2016,41(6):745-751.
[11]KOCH K R,YANG Y.Konfidenzbereiche und Hypothesentests für Robuste Parameterschtzungen[J].Zeitschrift für Vermessungswesen,1998,123(1):20-26.
[12]KOCH K R.Parameter Estimation and Hypothesis Testing in Linear Models[M].Berlin:Springer-Verlag,1988:271-307.
[13]SERGEI N,RODIONOV.A Sequential Algorithm for Testing Climate Regime Shifts[J].Geophysical Research Letters,2004,31(9):L09204.
[14]MING Feng,YANG Yuanxi,ZENG Anmin,et al.Analysis of Seasonal Signals and Long-term Trends in the Height Time Series of IGS Sites in China[J].Science China Earth Sciences,2016,59(6):1283-1291.DOI:10.1007/s11430-016-5285-9.
[15]KENDALL M G.Rank Correlation Measures[M].London:Charles Griffin,1975:202.