卫星测高反演重力场在西太平洋海域的应用
|
摘要
利用高精度卫星测高数据反演重力是获取海洋重力异常的重要方法。本文介绍了自2008年以来新一代高精度测高卫星的相关信息。在此基础上,联合多颗新型卫星,进行交叉点平差,通过中心差分代替常规Sandwell方法计算垂线偏差,利用改进的逆Vening-Meinesz法和Stokes数值反解法对西太平洋某区域进行了重力场反演。反演结果与NGDC提供的船测重力值比较表明,逆Vening-Meinesz法计算误差小于Stokes数值反解法。通过添加随机噪声数值实验,进一步证明逆Vening-Meinesz法对于测高数据误差的抗差能力更强,在研究区的重力异常计算结果可信度较高。
The application of gravity anomaly inversion from high quality satellite altimeter data is an important method to acquire marine gravity.The main characteristics of newly available satellite altimeter data since 2008 are reviewed in this paper.On the basis of multi-satellite data,we apply crossover adjustment and use central difference method to calculate deflection of the vertical instead of conventional Sandwell method.After that,improved inverse Vening-Meinesz method and numerical inverse-Stokes approach are adopted to calculate the gravity filed of certain area in the West Pacific.Comparision with the shipboard-based gravity provided by NGDC shows that inverse Vening-Meinesz method has smaller errors than numerical inverse-Stokes approach.With further numerical expericment ofadding stochastic noise,we show that inverse Vening-Meinesz method is more robust so that it can provide reliable gravity estimation for the target area.
The application of gravity anomaly inversion from high quality satellite altimeter data is an important method to acquire marine gravity.The main characteristics of newly available satellite altimeter data since 2008 are reviewed in this paper.On the basis of multi-satellite data,we apply crossover adjustment and use central difference method to calculate deflection of the vertical instead of conventional Sandwell method.After that,improved inverse Vening-Meinesz method and numerical inverse-Stokes approach are adopted to calculate the gravity filed of certain area in the West Pacific.Comparision with the shipboard-based gravity provided by NGDC shows that inverse Vening-Meinesz method has smaller errors than numerical inverse-Stokes approach.With further numerical expericment ofadding stochastic noise,we show that inverse Vening-Meinesz method is more robust so that it can provide reliable gravity estimation for the target area.
引文
[1]万剑华,李家军,刘善伟,等.基于Cryosat-2数据的南海2'×2'重力异常计算与分析[J].中国石油大学学报,2015,39(3):70-75.Wan J H,Li J J,Liu S W,et al.Calculation and analysis of 2′×2′gravity anomalies over the South China Sea based on Cryosat-2satellite altimeter data[J].Journal of China University of Petroleum,2015,39(3):70-75.
[2]彭富清,陈双军,金群峰.卫星测高误差对海洋重力场反演的影响[J].测绘学报,2014,43(4):337-340.Peng F Q,Chen S J,Jin Q F.Influence of altimetry errors on marine geopotential recovery[J].Acta Geodaetica et Cartographica Sinica,2014,43(4):337-340.
[3]李洋,张润宁.高度计测距精度对沿轨迹重力异常反演的影响[J].测绘学报,2015,44(4):G363-G369.Li Y,Zhang R N.Inference of altimeter accuracy on along-track gravity anomaly recovery[J].Acta Geodaetica et Cartographica Sinica,2015,44(4):G363-G369.
[4]Sandwell D,Garcia E,Soofi K,et al.Toward 1-mGal accuracy in global marine gravity from CryoSat-2,Envisat,and Jason-1[J].The Leading Edge,2013,32(8):892-899.
[5]Sandwell D T,Muller R D,Smith W H F,et al.New global marine gravity model from CryoSat-2and Jason-1reveals buried tectonic structure[J].Science,2014,346(6205):65-67.
[6]Hwang C,Hsu H Y.Shallow-water gravity anomalies from satellite altimetry:Case studies in the east china sea and Taiwan strait[J].Journal of the Chinese Institute of Engineers,2008,31(5):841-851.
[7]Keating P,Pinet N.Comparison of surface and ship borne gravity data with satellite-altimeter gravity data in Hudson Bay[J].The Leading Edge,2013,32(4):450-458.
[8]Garcia E S,Sandwell D T,Smith W H F.Retracking CryoSat-2,Envisat and Jason-1radar altimetry waveforms for improved gravity field recovery[J].Geophysical Journal International,2014:ggt469.
[9]Jiang X,Lin M,Liu J,et al.The HY-2satellite and its preliminary assessment[J].International Journal of Digital Earth,2012,5(3):266-281.
[10]彭海龙,林明森,穆博,等.HY-2A卫星雷达高度计数据的全球统计评价及质量分析[J].海洋学报,2015(7):54-66.Peng H L,Lin M S,Mu B,et al.HY-2AGlobal statistical evaluation and performance analysis of HY-2Asatellite radar altimeter data[J].Acta Oceanologica Sinica,2015(7):54-66.
[11]杨磊,周兴华,彭海龙,等.基于Jason-2的Saral/AltiKa高度计全球统计评估与交叉定标[J].海洋科学进展,2014,32(4):482-490.Yang L,Zhou X H,Peng H L,et al.Global assessment and cross-calibration of Saral/Altika based on Jason-2Altimeter[J].Advances in Marine Science,2014,32(4):482-490.
[12]Wingham D J,Francis C R,Baker S,et al.CryoSat:A mission to determine the fluctuations in Earth’s land and marine ice fields[J].Advances in Space Research,2006,37(4):841-871.
[13]Chaudhary A,Basu S,Kumar R,et al.Retrieving significant wave height in the Indian Ocean near Visakhapatnam using Jason-2altimeter data[J].Remote Sensing Letters,2015,6(4):286-294.
[14]褚坤.Geosat高度计数据处理与南海重力异常反演精度评价[D].青岛:中国石油大学,2010.Chu K.Geosat Altimeter Data Processing and Accuracy Assessment on the Inversion of Gravity Anomalies in the South Sea[D].Qingdao:China University of Petroleum,2010.
[15]王虎彪,王勇,陆洋,等.用卫星测高和船测重力资料联合反演海洋重力异常[J].大地测量与地球动力学,2005,25(1):81-85.Wang H B,Wang Y,Lu Y,et al.Inversion of marine gravity anomalies by combinating multi-altimeter data and ship borne gravimetric data[J].Journal of Geodesy and Geodynamics,2005,25(1):81-85.
[16]黄谟涛,翟国君,欧阳永忠,等.利用多代卫星测高数据反演海洋重力场[J].测绘科学,2006,31(6):37-39.Huang M T,Zhai G J,Ouyang Y Z,et al.Recovery of marine gravity field using in tegrated data from multi-satellite missions[J].Science of Surveying and Mapping,2006,31(6):37-39.
[17]王莉娟.多源卫星高度计中国近海及其邻域重力异常反演与精度检验[D].青岛:中国石油大学,2012.Wang L J.The Inversion of the Gravity Anomalies and the Assessment of Its Accuracy Based on Multi-satellite Altimeter Data in China Sea and Its Vicinity[D].Qingdao:China University of Petroleum,2012.
[18]Sandwell D T.A detailed view of the South Pacific geoid from satellite altimetry[J].Journal of Geophysical Research:Solid Earth,1984,89(B2):1089-1104.
[19]Olgiati A,Balmino G,Sarrailh M,et al.Gravity anomalies from satellite altimetry:comparison between computation via geoid heights and via deflections of the vertical[J].Bulletin géodésique,1995,69(4):252-260.
[20]黄谟涛.海洋重力场测定及其应用[M].北京:测绘出版社,2005.Huang M T.Determination and Application of Marine Gravity Field[M].Beijing:Surveying and Mapping Press,2005.
[21]胡淑梅,文汉江,李洪超,等.利用多种测高数据反演中国南海海域重力异常[J].大地测量与地球动力学,2011,31(4):56-59.Hu S M,Wen H J,Li H C,et al.Inversion of gravity anomalies over South China Sea by use of combination of multi-satellite altimeter data[J].Journal of Geodesy and Geodynamics,2011,31(4):56-59.
[22]孙凤华,郭玉良,陈春旺,等.我国沿海及海域1'×1'垂线偏差模型的研究与建立[J].海洋测绘,2002,22(5):12-15.Sun F H,Guo Y L,Chen C W,et al.Research and construction of 1'×1'deflection of the vertical model for China sea area[J].Hydrographic Surveying and Charting,2002,22(5):12-15.
[23]黄谟涛,翟国君,管铮,等.利用卫星测高数据反演海洋重力异常研究[J].测绘学报,2001,30(2):179-184.Huang M T,Zhai G J,Guan Z,et al.On the recovery of gravity anomalies from altimeter data[J].Acta Geodaetica et Cartographica Sinica,2001,30(2):179-184.
[24]杨乐,林明森,张有广,等.中国近岸海域高度计JASON-1测量数据的波形重构算法研究[J].海洋学报,2010,32(6):91-101.Yang L,Lin M S,Zhang Y G,et al.Improving the quality of JASON-1altimetry data by waveform retracking in coastal waters off China[J].Acta Oceanologica Sinica,2010,32(6):91-101.
[25]Sandwell D T,Smith W H F.Retracking ERS-1altimeter waveforms for optimal gravity field recovery[J].Geophysical Journal International,2005,163(1):79-89.
[2]彭富清,陈双军,金群峰.卫星测高误差对海洋重力场反演的影响[J].测绘学报,2014,43(4):337-340.Peng F Q,Chen S J,Jin Q F.Influence of altimetry errors on marine geopotential recovery[J].Acta Geodaetica et Cartographica Sinica,2014,43(4):337-340.
[3]李洋,张润宁.高度计测距精度对沿轨迹重力异常反演的影响[J].测绘学报,2015,44(4):G363-G369.Li Y,Zhang R N.Inference of altimeter accuracy on along-track gravity anomaly recovery[J].Acta Geodaetica et Cartographica Sinica,2015,44(4):G363-G369.
[4]Sandwell D,Garcia E,Soofi K,et al.Toward 1-mGal accuracy in global marine gravity from CryoSat-2,Envisat,and Jason-1[J].The Leading Edge,2013,32(8):892-899.
[5]Sandwell D T,Muller R D,Smith W H F,et al.New global marine gravity model from CryoSat-2and Jason-1reveals buried tectonic structure[J].Science,2014,346(6205):65-67.
[6]Hwang C,Hsu H Y.Shallow-water gravity anomalies from satellite altimetry:Case studies in the east china sea and Taiwan strait[J].Journal of the Chinese Institute of Engineers,2008,31(5):841-851.
[7]Keating P,Pinet N.Comparison of surface and ship borne gravity data with satellite-altimeter gravity data in Hudson Bay[J].The Leading Edge,2013,32(4):450-458.
[8]Garcia E S,Sandwell D T,Smith W H F.Retracking CryoSat-2,Envisat and Jason-1radar altimetry waveforms for improved gravity field recovery[J].Geophysical Journal International,2014:ggt469.
[9]Jiang X,Lin M,Liu J,et al.The HY-2satellite and its preliminary assessment[J].International Journal of Digital Earth,2012,5(3):266-281.
[10]彭海龙,林明森,穆博,等.HY-2A卫星雷达高度计数据的全球统计评价及质量分析[J].海洋学报,2015(7):54-66.Peng H L,Lin M S,Mu B,et al.HY-2AGlobal statistical evaluation and performance analysis of HY-2Asatellite radar altimeter data[J].Acta Oceanologica Sinica,2015(7):54-66.
[11]杨磊,周兴华,彭海龙,等.基于Jason-2的Saral/AltiKa高度计全球统计评估与交叉定标[J].海洋科学进展,2014,32(4):482-490.Yang L,Zhou X H,Peng H L,et al.Global assessment and cross-calibration of Saral/Altika based on Jason-2Altimeter[J].Advances in Marine Science,2014,32(4):482-490.
[12]Wingham D J,Francis C R,Baker S,et al.CryoSat:A mission to determine the fluctuations in Earth’s land and marine ice fields[J].Advances in Space Research,2006,37(4):841-871.
[13]Chaudhary A,Basu S,Kumar R,et al.Retrieving significant wave height in the Indian Ocean near Visakhapatnam using Jason-2altimeter data[J].Remote Sensing Letters,2015,6(4):286-294.
[14]褚坤.Geosat高度计数据处理与南海重力异常反演精度评价[D].青岛:中国石油大学,2010.Chu K.Geosat Altimeter Data Processing and Accuracy Assessment on the Inversion of Gravity Anomalies in the South Sea[D].Qingdao:China University of Petroleum,2010.
[15]王虎彪,王勇,陆洋,等.用卫星测高和船测重力资料联合反演海洋重力异常[J].大地测量与地球动力学,2005,25(1):81-85.Wang H B,Wang Y,Lu Y,et al.Inversion of marine gravity anomalies by combinating multi-altimeter data and ship borne gravimetric data[J].Journal of Geodesy and Geodynamics,2005,25(1):81-85.
[16]黄谟涛,翟国君,欧阳永忠,等.利用多代卫星测高数据反演海洋重力场[J].测绘科学,2006,31(6):37-39.Huang M T,Zhai G J,Ouyang Y Z,et al.Recovery of marine gravity field using in tegrated data from multi-satellite missions[J].Science of Surveying and Mapping,2006,31(6):37-39.
[17]王莉娟.多源卫星高度计中国近海及其邻域重力异常反演与精度检验[D].青岛:中国石油大学,2012.Wang L J.The Inversion of the Gravity Anomalies and the Assessment of Its Accuracy Based on Multi-satellite Altimeter Data in China Sea and Its Vicinity[D].Qingdao:China University of Petroleum,2012.
[18]Sandwell D T.A detailed view of the South Pacific geoid from satellite altimetry[J].Journal of Geophysical Research:Solid Earth,1984,89(B2):1089-1104.
[19]Olgiati A,Balmino G,Sarrailh M,et al.Gravity anomalies from satellite altimetry:comparison between computation via geoid heights and via deflections of the vertical[J].Bulletin géodésique,1995,69(4):252-260.
[20]黄谟涛.海洋重力场测定及其应用[M].北京:测绘出版社,2005.Huang M T.Determination and Application of Marine Gravity Field[M].Beijing:Surveying and Mapping Press,2005.
[21]胡淑梅,文汉江,李洪超,等.利用多种测高数据反演中国南海海域重力异常[J].大地测量与地球动力学,2011,31(4):56-59.Hu S M,Wen H J,Li H C,et al.Inversion of gravity anomalies over South China Sea by use of combination of multi-satellite altimeter data[J].Journal of Geodesy and Geodynamics,2011,31(4):56-59.
[22]孙凤华,郭玉良,陈春旺,等.我国沿海及海域1'×1'垂线偏差模型的研究与建立[J].海洋测绘,2002,22(5):12-15.Sun F H,Guo Y L,Chen C W,et al.Research and construction of 1'×1'deflection of the vertical model for China sea area[J].Hydrographic Surveying and Charting,2002,22(5):12-15.
[23]黄谟涛,翟国君,管铮,等.利用卫星测高数据反演海洋重力异常研究[J].测绘学报,2001,30(2):179-184.Huang M T,Zhai G J,Guan Z,et al.On the recovery of gravity anomalies from altimeter data[J].Acta Geodaetica et Cartographica Sinica,2001,30(2):179-184.
[24]杨乐,林明森,张有广,等.中国近岸海域高度计JASON-1测量数据的波形重构算法研究[J].海洋学报,2010,32(6):91-101.Yang L,Lin M S,Zhang Y G,et al.Improving the quality of JASON-1altimetry data by waveform retracking in coastal waters off China[J].Acta Oceanologica Sinica,2010,32(6):91-101.
[25]Sandwell D T,Smith W H F.Retracking ERS-1altimeter waveforms for optimal gravity field recovery[J].Geophysical Journal International,2005,163(1):79-89.