KSS32-M型海洋重力仪动态性能分析
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摘要
采用测网交点差、重复测线和与KSS31-M型海洋重力仪重合测线对比的方法,利用近年来KSS32-M海洋重力仪的实测数据对KSS32-M海洋重力仪测量稳定性和数据可靠性进行分析。利用机动转向法验证重力仪阻尼延迟时间为70 s,基于70 s阻尼延迟时间计算的重力测网的测量准确度为0.65 m Gal,与KSS31-M型海洋重力仪采集的重力剖面对比结果看,重合测线相关性为高度相关,4条重合测线网的交点差绝对值最大为1.66 m Gal,准确度为0.59 m Gal,均达到国家标准要求的近海重力测网交点差均方根小于2 m Gal的技术指标。重复测线的幅值接近,相位吻合,匹配测点异常差的平均值小于0.9,均方根均小于0.8,相关性均在0.98以上。本研究表明KSS32-M型海洋重力仪动态测量性能稳定、测量数据可靠。
Based on the data measured using the KSS32-M ocean gravimeter in recent years,the measurement stability and data reliability of this instrument are analyzed; moreover,the methods employed to measure the intersection point difference,repeating survey line,and coincidence line using the gravimeter are compared.The delay time of the gravimeter is 70 s,calculated using the maneuver steering method.Based on this calculation,the accuracy of gravimetric measurement is found to be 0.65 m Gal.According to the gravity profile collected by the gravimeter,the correlations of the coincidence lines are highly correlated.The absolute value of the intersecting point difference of four coincident surveying lines is 1.66 m Gal,and the precision is 0.59 m Gal.All data meet the national standard of the intersection which the gravity measurement network of the national standard of the intersection point difference that less than 2 m Gal.The average value of the anomalies of the matching points is less than 0.9,the variance is less than 0.8,and the correlation is higher than 0.98.In summary,this study shows that the data measured by the KSS32-M gravimeter are stable and reliable.
Based on the data measured using the KSS32-M ocean gravimeter in recent years,the measurement stability and data reliability of this instrument are analyzed; moreover,the methods employed to measure the intersection point difference,repeating survey line,and coincidence line using the gravimeter are compared.The delay time of the gravimeter is 70 s,calculated using the maneuver steering method.Based on this calculation,the accuracy of gravimetric measurement is found to be 0.65 m Gal.According to the gravity profile collected by the gravimeter,the correlations of the coincidence lines are highly correlated.The absolute value of the intersecting point difference of four coincident surveying lines is 1.66 m Gal,and the precision is 0.59 m Gal.All data meet the national standard of the intersection which the gravity measurement network of the national standard of the intersection point difference that less than 2 m Gal.The average value of the anomalies of the matching points is less than 0.9,the variance is less than 0.8,and the correlation is higher than 0.98.In summary,this study shows that the data measured by the KSS32-M gravimeter are stable and reliable.
引文
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[14]张向宇,徐行,廖开训,等.多型号海洋重力仪的海上比测结果分析[J].海洋测绘,2015,35(5):71-74,78.Zhang Xiangyu,Xu Xing,Liao Kaixun,et al.Test analysis of difference coefficient calculations for surface ocean geostrophic currents[J].Hydrographic Surveying and Charting,2015,35(5):71-74,78.
[15]王功祥,赵强,廖开训.浅谈当今海洋重磁调查设备的现状[J].南海地质研究,2004,17(1):75-81.Wang Gongxiang,Zhao Qiang,Liao Kaixun.Simple discussion about the actuality of marine gravity and magnetism survey device[J].Gresearch of Eological South China Sea,2004,17(1):75-81.
[16]Bodensee Gravitymeter System.Marine gravity meter KSS32-M instruction manual[R].Germany:Bodenseewerk,2011.
[17]陈邦彦,梁广胜.海洋重力测量和KSS31型重力仪[J].海洋地质,1998,35(3):8-21.Chen Bangyan,Liang Guangsheng.Marine gravity measurement and KSS31-type gravimeter[J].Marine Geology,1998,35(3):8-21.
[18]宋文尧.海洋定位重力测量及其地质地球物理解释[M].北京:科学出版社,1993:267.Song Wenyao.Ocean Orientation Gravimetric Survey and its Geophysical and Geophysical Interpretation[M].Beijing:Science Press,1993:267.
[19]GB/T12763.8-2007.海洋调查规范-第8部分:海洋地质地球物理调查[S].GB/T12763.8-2007.Marine survey specification-part8:Marine geological and geophysical survey[S].
[2]宁津生,黄谟涛,欧阳永忠,等.海空重力测量技术进展[J].海洋测绘,2014,34(3):67-72,76.Ning Jingsheng,Huang Motao,Ouyang Yongzhong,et al.Development of marine and airborne gravity measurement technologies[J].Hydrographic Surveying and Charting,2014,34(3):67-72,76.
[3]曾华霖.重力场与重力勘探[M].北京:地质出版社,2005:273.Zeng Hualin.Gravity Field and Gravity Exploration[M].Beijing:Geological Publishing House,2005:273.
[4]廖开训,徐行.KSS31海洋重力仪的长期零点漂移特征[J].海洋测绘,2015,35(03):32-35.Liao Kaixun,Xu Xing.Long tern zero drift characteristics of KSS31 marine gravimeter[J].Hydrographic Surveying and Charting,2015,35(03):32-35.
[5]许时耕.GSS2型34号海洋重力仪13年零点漂移的分析[J].海洋技术,1982,1(4):98-102.Xu Shigeng.Analysis of the zero drift of marine gravimeter model GSS-2 No.34 during its thirteen years of operation[J].Journal of Ocean Technology,1982,1(4):98-102.
[6]张遴梁.海洋重力仪的现状和发展[J].海洋科学,2001,25(9):18-20.Zhang Linliang.Present state and development of marine gravimeters[J].Marine Sciences,2001,25(9):18-20.
[7]Bodensee Gravitymeter System.Instruction manual for marine gravity meter system KSS31M[R].Germany:Bodenseewerk,2004.
[8]栾锡武.KSS31M型海洋重力仪在动、静态条件下观测到的读数变化及分析[J].地球物理学进展,2004,19(2):442-448.Luan Xiwu.The fixed points gravity data measurment used by KSS31M and data analysis[J].Progress in Geophysics,2004,19(2):442-448.
[9]王秀东,王真,王先超,等.KSS31M型海洋重力仪阻尼延迟时间修正后对重力测网精度的影响[J].海洋通报,2010,39(3):320-323.Wang Xiudong,Wang Zhen,Wang Xianchao,et al.Effect of the corrected KSS31M marine gravity-meter's delay-time on the marine gravity measurement precision[J].Marine Science Bulletin,2010,39(3):320-323.
[10]付永涛,王先超,谢天峰.KSS31 M型海洋重力仪动态性能的分析[J].海洋科学,2007,31(6):29-33.Fu Yongtao,Wang Xianchao,Xie Tianfeng.Verfying the dynamic properties of KSS31M marine gravimeter by the observed gravity reading and GPS data[J].Marine Sciences,2007,31(6):29-33.
[11]顾兆峰,张志珣,杨慧良,等.KSS 31M海洋重力仪静态观测结果及分析[J].海洋测绘,2005,25(2):66-68.Gu Zhaofeng,Zhang Zhixun,Yang Huiliang,et al.The static measurement result of KSS31M marine gravimeter and its analysis[J].Hydrographic Surveying and Charting,2005,25(2):66-68.
[12]付永涛,王先超,谢天峰.KSS31 M型海洋重力仪在海边静态观测的结果——兼与栾锡武先生商榷[J].地球物理学进展,2007,22(1):308-311.Fu Yongtao,Wang Xianchao,Xie Tianfeng.The static measurement of KSS31M marine gravity meter at coast[J].Process in Geophysics,2007,22(1):308-311.
[13]张振波,赵俊峰,付永涛,等.GT-1M海洋重力仪与KSS31M海洋重力仪的对比[J].海洋科学,2015,39(5):85-91.Zhang Zhenbo,Zhao Junfeng,Fu Yongtao,et al.The comparison between GT-1M and KSS31M marine Gravitymeters[J].Marine Sciences,2015,39(5):85-91.
[14]张向宇,徐行,廖开训,等.多型号海洋重力仪的海上比测结果分析[J].海洋测绘,2015,35(5):71-74,78.Zhang Xiangyu,Xu Xing,Liao Kaixun,et al.Test analysis of difference coefficient calculations for surface ocean geostrophic currents[J].Hydrographic Surveying and Charting,2015,35(5):71-74,78.
[15]王功祥,赵强,廖开训.浅谈当今海洋重磁调查设备的现状[J].南海地质研究,2004,17(1):75-81.Wang Gongxiang,Zhao Qiang,Liao Kaixun.Simple discussion about the actuality of marine gravity and magnetism survey device[J].Gresearch of Eological South China Sea,2004,17(1):75-81.
[16]Bodensee Gravitymeter System.Marine gravity meter KSS32-M instruction manual[R].Germany:Bodenseewerk,2011.
[17]陈邦彦,梁广胜.海洋重力测量和KSS31型重力仪[J].海洋地质,1998,35(3):8-21.Chen Bangyan,Liang Guangsheng.Marine gravity measurement and KSS31-type gravimeter[J].Marine Geology,1998,35(3):8-21.
[18]宋文尧.海洋定位重力测量及其地质地球物理解释[M].北京:科学出版社,1993:267.Song Wenyao.Ocean Orientation Gravimetric Survey and its Geophysical and Geophysical Interpretation[M].Beijing:Science Press,1993:267.
[19]GB/T12763.8-2007.海洋调查规范-第8部分:海洋地质地球物理调查[S].GB/T12763.8-2007.Marine survey specification-part8:Marine geological and geophysical survey[S].