最新全球重力数据库V23中陆域重力资料质量评估

doi:10.11867/j.issn.1001-8166.2017.01.0075

地球科学进展 ›› 2017, Vol. 32 ›› Issue (1): 75 -82. doi: 10.11867/j.issn.1001-8166.2017.01.0075

张春灌 ¹(

), 袁炳强 ¹, 张国利 ²

1.西安石油大学地球科学与工程学院, 陕西西安 710065
2.中国地质调查局天津地质调查中心, 天津 300170

收稿日期:2016-10-27 修回日期:2016-12-20 出版日期:2017-01-20
基金资助:
*中国地质调查局项目“新疆东部地质—地球物理资料综合研究”(编号:121201011000150012-01);西安石油大学项目“新疆东北部盆地基底构造属性及盆山构造关系研究”(编号:2016BS10)资助.

Quality Evaluation of Land Gravity Data in the Latest Global Gravity Database V23

Chunguan Zhang ¹( ), Bingqiang Yuan ¹, Guoli Zhang ²

1.School of Earth Science and Engineering, Xi’an Shiyou University, Xi’an 710065, China;
2.Tianjin Geological Survey Center, China Geological Survey, Tianjin 300170, China

Received:2016-10-27 Revised:2016-12-20 Online:2017-01-20 Published:2017-01-10
About author:
First author:Zhang Chunguan (1981-), male, Yudu County, Jiangxi Province, Associate professor. Research areas include integrated geophysical exploration and tectonophysics. E-mail: chunguan-zhang@163.com
Supported by:
Project supported by the China Geological Survey Project “Integrated study of the geological data and geophysical data in Eastern Xinjiang” (No. 121201011000150012-01);Xi’an Shiyou University Project “Tectonic attribute of basin basement and basin-mountain tectonic relation of the Northeastern Xinjiang” (No. 2016BS10).

全文 ( 13 ) 下载PDF ( 581 )

为了评估最新全球重力数据库V23中陆域重力资料的质量问题,选择了美国、秘鲁、爱尔兰、南非、肯尼亚、澳大利亚、中国等7个国家的8个区块约133万km²的重力数据进行对比分析。基于V23中自由空间重力异常数据,利用纯球坐标系内重力校正方法获得了这些区块的计算布格重力异常。利用相关分析的方法对这些区块的实测布格重力异常和计算布格重力异常进行相关分析,得到了相应的相关系数。通过对实测布格重力异常和计算布格重力异常之间相关系数及差值特征的综合分析,评估了全球重力数据库V23中选取的8个区块重力数据的质量。研究结果表明,斯克里普斯海洋研究所发布的最新全球重力数据库V23中陆域重力资料融合了大量测量年代较早的地面重力数据或者航空重力数据,而近十几年新完成的地面重力资料或者航空重力资料可能未融合进该数据库。具有大量年代较早的地面或者航空重力测量资料的区域,该数据库中陆域重力资料的质量较高,而重力工作程度较低的区域,其资料的质量则较低。

关键词: 质量评估, 陆域重力资料, 全球重力数据库, 斯克里普斯海洋研究所

In order to evaluate the quality of the land gravity data in the latest global gravity database V23, the authors chose the gravity data of eight blocks with a total area of 1 330 000 km² to compare and analyze, and these blocks involved seven countries, including the United States, Peru, Ireland, South Africa, Kenya, Australia, and China. Based on the free-air gravity anomaly data of the latest global gravity database V23, the authors obtained the calculated Bouguer gravity anomaly using the gravity correction methods within the pure spherical coordinate system in these eight blocks. Then, the correlation coefficients between the measured Bouguer gravity anomaly and the calculated Bouguer gravity anomaly were calculated by the correlation analysis method in these eight blocks. Finally, through comprehensive analysis of the features of these correlation coefficients and differences between the measured Bouguer gravity anomaly and the calculated Bouguer gravity anomaly in these eight blocks, the quality of the gravity data of these eight blocks was evaluated in the latest global gravity database V23. The results showed that the latest global gravity database V23, released by Scripps Institution of Oceanography, integrated a large number of the ground or airborne gravity data measuring in an earlier era, and the newly surveyed ground or airborne gravity data may not be integrated into the database. The quality of land gravity data is relatively high in the areas with a large number of older ground or airborne gravity data, otherwise it is low in the zones with a lower gravity working degrees.

Key words: Quality evaluation, Land gravity data, Global gravity database, Scripps Institution of Oceanography.

中图分类号:

P312.9

图1 数据对比区块分布图

Fig.1 The block distribution map for data comparison

图2 南半球区块数据对比图
(a)澳大利亚区块;(b)南非区块;(c)秘鲁区块;(d)肯尼亚区块;1.实测布格重力异常;2.计算布格重力异常;3.实测布格重力异常与计算布格重力异常的差值;4.实测布格重力异常与计算布格重力异常的相关系数;c4中黑色十字点为重力路线测点;d4中黑色十字点为2008年重力测点、红色圆点为早期重力路线测点

Fig.2 The data comparison map in the Southern Hemisphere
(a)Australia block;(b)South Africa block;(c)Peru block;(d)Kenya block; 1.Measured Bouguer gravity anomaly; 2.Calculated Bouguer gravity anomaly; 3.The difference between the measured Bouguer gravity anomaly and the calculated Bouguer gravity anomaly; 4.The correlation coefficient between the measured Bouguer gravity anomaly and the calculated Bouguer gravity anomaly; The black cross points are the points of gravity lines in c4; The black cross points are the gravity points in 2008 and the red dots are the points of early gravity lines in d4

图3 北半球区块数据对比图
(a)爱尔兰区块;(b)美国区块;(c)渭河区块;(d)青藏区块;1.实测布格重力异常;2.计算布格重力异常;3.实测布格重力异常与计算布格重力异常的差值;4.实测布格重力异常与计算布格重力异常的相关系数

Fig.3 The data comparison map in the Northern Hemisphere
(a)Ireland block;(b)America block;(c)Weihe block;(d)Qinghai Tibet block; 1.Measured Bouguer gravity anomaly; 2.Calculated Bouguer gravity anomaly; 3.The difference between the measured Bouguer gravity anomaly and the calculated Bouguer gravity anomaly; 4.The correlation coefficient between the measured Bouguer gravity anomaly and the calculated Bouguer gravity anomaly

[1]	Sandwell D T, Muller R D, Smith W H F,et al. New global marine gravity model from CryoSat-2 and Jason-1 reveals buried tectonic structure[J]. Science, 2014, 346(6 205): 65-67.
[2]	Sandwell D T, Smith W H F. Global marine gravity from retracked Geosat and ERS-1 altimetry: Ridge Segmentation versus spreading rate[J].Journal of Geophysical Research, 2009, 114(1): 1-18.
[3]	Sandwell D T, Garcia E, Soofi K,et al. Towards 1-mGal Global Marine Gravity from CryoSat-2, Envisat, and Jason-1[J]. The Leading Edge, 2013, 32(8): 892-899.
[4]	Zhang Minghua, Zhang Jiaqiang.Resolution of modern satellite altimetric gravity anomaly and its application to marine geological survey[J].Geophysical & Geochemical Exploration, 2005, 29(4): 295-298.
	[张明华, 张家强. 现代卫星测高重力异常分辨能力分析及在海洋资源调查中应用[J]. 物探与化探, 2005, 29(4): 295-298.]
[5]	Liang Ziliang, Chen Lu, Xie Kun,et al. Inversion of marine gravity anomalies and geoid using multi-satellite altimeter data[J]. Journal of Geodesy and Geodynamics, 2015, 35(1): 40-44.
	[梁子亮, 陈路, 解琨, 等. 利用多代卫星测高数据反演海洋重力异常及大地水准面[J]. 大地测量与地球动力学, 2015, 35(1): 40-44.]
[6]	Liu Shanwei, Li Jiajun, Wan Jianhua,et al. Calculation of gravity anomalies over China Sea and its vicinity based on multi-generation satellite altimetry data[J]. Marine Sciences, 2015, 39(12): 130-134.
	[刘善伟, 李家军, 万剑华, 等. 利用多代卫星测高数据计算中国近海及邻域重力异常[J]. 海洋科学, 2015, 39(12): 130-134.]
[7]	Guan Yihe, Sheng Hui, Liu Shanwei,et al. Inversion of the gravity anomalies by using multi-generation satellite altimeter data in the South China Sea[J]. Hydrographic Surveying and Charting, 2016, 36(1): 11-14.
	[管一鹤, 盛辉, 刘善伟, 等. 联合多代卫星测高资料反演中国南海重力异常[J]. 海洋测绘, 2016, 36(1): 11-14.]
[8]	Hu yi, Wang Liming, Zhong Guicai,et al.Gravity and magnetic characteristics of the Weddell Sea and its tectonic significance[J]. Advances in Earth Science, 2015, 30(11): 1 231-1 238.
	[胡毅, 王立明, 钟贵才, 等. 威德尔海的重磁场特征及其构造意义[J]. 地球科学进展, 2015, 30(11): 1 231-1 238.]
[9]	Xu Haijun, Zhang Yongzhi, Duan Hurong,et al. Gravity anomaly detected by GOCE satellite in China[J]. Progress in Geophysics, 2012, 27(2): 404-408.
	[徐海军, 张永志, 段虎荣, 等. GOCE卫星监测的中国区域重力异常[J]. 地球物理学进展, 2012, 27(2): 404-408.]
[10]	Xie Rong, Liu Yawen, Li Xiangxiang.Key technologies of Earth observation satellite data integration system under big data environment[J].Advances in Earth Science, 2015, 30(8): 855-862.
	[谢榕, 刘亚文, 李翔翔. 大数据环境下卫星对地观测数据集成系统的关键技术[J]. 地球科学进展, 2015, 30(8): 855-862.]
[11]	Miao Chunsheng, Cheng Yuan, Wang Jianhong,et al. Data fusion of offshore SST from China FY and HY2 satellites and its application[J]. Advances in Earth Science, 2015, 30(10): 1 127-1 143.
	[苗春生, 程远, 王坚红, 等. 中国风云卫星与海洋卫星近海SST资料融合技术及应用研究[J]. 地球科学进展, 2015, 30(10): 1 127-1 143.]
[12]	Liu Daizhi.A number of research directions in geophysics for national security[J]. Progress in Geophysics, 2007, 22(4): 1 327-1 331.
	[刘代志. 国家安全地球物理学的若干研究方向[J]. 地球物理学进展, 2007, 22(4): 1 327-1 331.]
[13]	Xu Zunyi, Yan Lei, Ning Shunian,et al. Situation and development of marine gravity aided navigation system[J]. Progress in Geophysics, 2007, 22(1): 104-111.
	[徐遵义, 晏磊, 宁书年, 等. 海洋重力辅助导航的研究现状与发展[J]. 地球物理学进展, 2007, 22(1): 104-111.]
[14]	Wang Liupeng, Guo Yanping, Feng Wei.GOCE satellite in the military applications[J]. Geospatial Information, 2011, 9(1): 11-15.
	[王留朋, 郭燕平, 冯炜. GOCE重力卫星在军事上的应用前景分析[J]. 地理空间信息, 2011, 9(1): 11-15.]
[15]	An Yulin, Zhang Minghua, Huang Jinming,et al. The computation scheme and computation process for gravity correction values within the pure spherical coordinate system[J]. Geophysical & Geochemical Exploration, 2010, 34(6): 1-9.
	[安玉林, 张明华, 黄金明, 等. 纯球坐标系内各项重力校正值计算方案和过程[J]. 物探与化探, 2010, 34(6): 1-9.]
[16]	Zhang C, Dong Y, Yuan B,et al. A genesis analysis of the regional gravity and magnetic anomalies in the northern part of eastern Xinjiang, Northwest China[J]. Petroleum Science and Technology, 2014, 32(17): 2 075-2 085.
[17]	Smith W H F, Sandwell D T. Global seafloor topography from satellite altimetry and ship depth soundings[J]. Science, 1997, 277(5 334): 1 957-1 962.
[18]	Becker J J, Sandwell D T, Smith W H F,et al. Global bathymetry and elevation data at 30 Arc seconds resolution: SRTM30_PLUS[J]. Marine Geodesy, 2009, 32(4): 355-371.
[19]	Wellman P, Murray A S.Bouguer Gravity Anomalies[R]. Australia: Bureau of Mineral Resources, Geology and Geophysics,Department of National Development, 1979.
[20]	Webb S J,Cawthorn R G, Nguuri T,et al. Gravity modeling of Bushveld Complex connectivity supported by Southern African Seismic Experiment results[J]. South African Journal of Geology, 2004, 107: 207-218,doi:10.2113/107.1-2.207.
[21]	Yuan B, Xie W, Liu G,et al. Gravity field and tectonic features of Block L2 in the Lamu Basin[J]. Geophysical Prospecting, 2012, 60(1): 161-178.
[22]	Readman P W, O’Reilly B M, Murphy T. Gravity gradients and upper-crustal tectonic fabrics,Ireland[J]. Journal of the Geological Society, 1997, 154: 817-828.
[23]	Seeley J M, Randy Keller G.Delineation of subsurface Proterozoic Unkar and Chuar Group sedimentary basins in northernArizona using gravity and magnetics: Implications for hydrocarbon source potential[J]. AAPG Bulletin, 2003, 87: 1 299-1 321, doi:10.1306/0319.03200198.
[24]	Zhang Minghua, He Hao, Qiao Jihua, et al.Integration of Regional Gravity Survey in Qinghai-Tibet Plateau[M]. Beijing: Geological Publishing House, 2015.
	[张明华, 贺颢, 乔计花, 等. 青藏高原区域重力调查成果综合研究[M]. 北京: 地质出版社, 2015.]

[1]	张春灌,李想,袁炳强,宋立军. 地球磁异常( EMAG2)数据中海域资料质量评估[J]. 地球科学进展, 2019, 34(3): 288-294.

阅读次数

全文

摘要