Multi-scale analysis of gravity anomaly models in sea area

doi:10.11947/j.AGCS.2024.20230309

Abstract

Abstract: Different from the traditional analysis method for gravity anomaly models, DOG (difference of Gauss) spherical wavelet is used to extract the gravity anomaly signals of DTU10, DTU17 and SIO V32.1 models in different bands for Mariana Trench area (140 °E-150°E, 10°N-20°N) as an example. The differences between the models are analyzed in depth. An initial attempt of multi-scale analysis in different depths and different resolutions based on RBF (radial basis function) are proposed. The results of multi-scale analysis using DOG spherical wavelet show that as the scale becomes smaller, the difference between the models becomes larger. The differences between DTU10 and DTU17 models are mainly concentrated in the band of 10.9~43.6 km, around the coast, trench and submarine mountain, which reflects the contribution of Cryosat-2, Jason-1/GM observation data and FES2014 ocean tide model. Due to the different methods for model construction, the increase of observations and the impact of waveform retracking, the difference between DTU17 and SIO V32.1 models is greater than that between DTU10 and DTU17. The traditional radial basis function is improved, and the multi-scale analysis of radial basis function under multi-depth and multi-spatial resolution is realized. The result is slightly better than that from single-depth and single-spatial resolution radial basis function. It is expected to be applied to the construction of gravity field model using multi-source data.

Key words: satellite altimetry, gravity anomaly model, spherical wavelet, radial basis function, multi-scale analysis

CLC Number:

P223

LIU Huanling, YANG Weiran, ZHANG Fang, WEN Hanjiang, HU Minzhang, JIANG Tao, LIN Wenqi, LI Chenxi. Multi-scale analysis of gravity anomaly models in sea area[J]. Acta Geodaetica et Cartographica Sinica, 2024, 53(2): 274-285.

References

[1] MARKS K M. Resolution of the Scripps/NOAA marine gravity field from satellite altimetry[J]. Geophysical Research Letters, 1996, 23(16):2069-2072.
[2] SANDWELL D T, SMITH W H F. Marine gravity anomaly from Geosat and ERS 1 satellite altimetry[J]. Journal of Geophysical Research:Solid Earth, 1997, 102(B5):10039-10054.
[3] ANDERSEN O B, KNUDSEN P. Global marine gravity field from the ERS-1 and Geosat geodetic mission altimetry[J]. Journal of Geophysical Research:Oceans, 1998, 103(C4):8129-8137.
[4] HWANG C, KAO E C, PARSONS B. Global derivation of marine gravity anomalies from Seasat, Geosat, ERS-1 and TOPEX/POSEIDON altimeter data[J]. Geophysical Journal International, 1998, 134(2):449-459.
[5] 张胜军,李建成,孔祥雪. 基于Laplace方程的垂线偏差法反演全球海域重力异常[J].测绘学报,2020,49(4):452-460. DOI:10.11947/j.AGCS.2020.20190108. ZHANG Shengjun, LI Jiancheng, KONG Xiangxue. Inversion of global marine gravity anomalies with vertical deflection method deduced from Laplace equation[J]. Acta Geodaetica et Cartographica Sinica, 2020, 49(4):452-460. DOI:10.11947/j.AGCS.2020.20190108.
[6] ZHU Chengcheng, GUO Jinyun, YUAN Jiajia, et al. SDUST2021GRA:global marine gravity anomaly model recovered from Ka-band and Ku-band satellite altimeter data[J]. Earth System Science Data, 2022, 14(10):4589-4606.
[7] WAN Xiaoyun, HAO Ruijie, JIA Yongjun, et al. Global marine gravity anomalies from multi-satellite altimeter data[J]. Earth, Planets and Space, 2022, 74:165.
[8] 孙中苗,管斌,翟振和,等. 海洋卫星测高及其反演全球海洋重力场和海底地形模型研究进展[J]. 测绘学报,2022,51(6):923-934. DOI:10.11947/j.AGCS.2022.20220069. SUN Zhongmiao, GUAN Bin, ZHAI Zhenhe, et al. Research progress of ocean satellite altimetry and its recovery of global marine gravity field and seafloor topography model[J]. Acta Geodaetica et Cartographica Sinica, 2022, 51(6):923-934. DOI:10.11947/j.AGCS.2022.20220069.
[9] GUO Jinyun, HWANG Cheinway, DENG Xiaoli. Application of satellite altimetry in marine geodesy and geophysics[J]. Frontiers in Earth Science, 2022,10:910562.
[10] SANDWELL D T, GARCIA E S, SOOFI K A, 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.
[11] LI Qianqian, BAO Lifeng, WANG Yong. Accuracy evaluation of altimeter-derived gravity field models in offshore and coastal regions of China[J]. Frontiers in Earth Science, 2021, 9:649.
[12] CHAO Nengfang, WANG Shuai, OUYANG Guichong, et al. An improved triple collocation-based integration of multiple gravity anomaly grids from satellite altimetry:contribution of ICESat-2[J]. Remote Sensing of Environment, 2023, 292:113582.
[13] ANDERSEN O B, KNUDSEN P. The DTU17 global marine gravity field:first validation results[C]//Proceedings of 2019 International Review Workshop on Satellite Altimetry Cal/Val Activities and Applications. Cham:Springer International Publishing, 2019:83-87.
[14] ANDERSEN O B, KNUDSEN P, BERRY P A M. The DNSC08GRA global marine gravity field from double retracked satellite altimetry[J]. Journal of Geodesy, 2010, 84(3):191-199.
[15] 程鹏飞, 文汉江, 孙罗庆, 等. 中国大陆GPS速度场的球面小波模型及多尺度特征分析[J]. 测绘学报, 2015, 44(10):1063-1070. DOI:10.11947/j.AGCS.2015.20140141. CHENG Pengfei, WEN Hanjiang, SUN Luoqing, et al. The spherical wavelet model and multiscale analysis of characteristics of GPS velocity fields in China's mainland[J]. Acta Geodaetica et Cartographica Sinica, 2015, 44(10):1063-1070. DOI:10.11947/j.AGCS.2015.20140141.
[16] 蔺文奇, 文汉江, 刘焕玲, 等. 局部重力异常的球面小波多尺度信号分析[J]. 测绘科学, 2022, 47(3):9-15. LIN Wenqi, WEN Hanjiang, LIU Huanling, et al. Spherical wavelet multiscale signal analysis of regional gravity anomaly[J]. Science of Surveying and Mapping, 2022, 47(3):9-15.
[17] TAPE C, MUSÉ P, SIMONS M, et al. Multiscale estimation of GPS velocity fields[J]. Geophysical Journal International, 2009, 179(2):945-971.
[18] KLEES R, TENZER R, PRUTKIN I, et al. A data-driven approach to local gravity field modelling using spherical radial basis functions[J]. Journal of Geodesy, 2008, 82(8):457-471.
[19] TENZER R, KLEES R. The choice of the spherical radial basis functions in local gravity field modeling[J]. Studia Geophysica et Geodaetica, 2008, 52(3):287-304.
[20] XU Ya, HAO Tianyao, LI Zhiwei, et al. Regional gravity anomaly separation using wavelet transform and spectrum analysis[J]. Journal of Geophysics and Engineering, 2009, 6(3):279-287.
[21] 汤井田, 杨磊, 任政勇, 等. 基于小波细节信息的重力源参数估算[J]. 地球物理学进展, 2019, 34(6):2320-2327. TANG Jingtian, YANG Lei, REN Zhengyong, et al. Gravity source parameters estimation based on wavelet details information[J]. Progress in Geophysics, 2019, 34(6):2320-2327.
[22] TOZER B, SANDWELL D T, SMITH W H F, et al. Global bathymetry and topography at 15ArcSec:SRTM15+[J]. Earth and Space Science, 2019, 6(10):1847-1864.