HIGH-LATITUDE ARCTIC: STATE AND PROSPECTS FOR USING MODERN GLOBAL MODELS OF THE EARTH'S GRAVITY FIELD
1 Schmidt Institute of Physics of the Earth, Russian Academy of Sciences
2 Vladimir State University named after Alexander and Nikolay Stoletovs
Journal: Geophysical research
Tome: 25
Number: 3
Year: 2024
Pages: 75-86
UDK: 550.831.015: 550.831.3: 528.27
DOI: 10.21455/gr2024.3-5
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Mikhailov
V.N P.S. HIGH-LATITUDE ARCTIC: STATE AND PROSPECTS FOR USING MODERN GLOBAL MODELS OF THE EARTH'S GRAVITY FIELD
// . 2024. Т. 25. № 3. С. 75-86. DOI: 10.21455/gr2024.3-5
@article{Mikhailov
V.NHIGH-LATITUDE2024,
author = "Mikhailov
V.N, P. S.",
title = "HIGH-LATITUDE ARCTIC: STATE AND PROSPECTS FOR USING MODERN GLOBAL MODELS OF THE EARTH'S GRAVITY FIELD
",
journal = "Geophysical research",
year = 2024,
volume = "25",
number = "3",
pages = "75-86",
doi = "10.21455/gr2024.3-5",
language = "English"
}
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Keywords: Arctic, Earth's gravity field, gravity anomalies, global models, accuracy estimation.
Аnnotation: A comparative analysis of the accuracy of modern global high-level models of the Earth's gravity field in water areas located in the Arctic region is presented. Due to its remoteness and inaccessibility, this territory has been instrumentally explored to a lesser extent than most other areas of the World Ocean. The more valuable is the data obtained using existing global models of the entire water area of the Arctic basin.
The purpose of the study is a practical assessment of the accuracy of modern models of the gravitational field in the Arctic and the identification of patterns in the distribution of errors in the model data. The most effective way to assess models is to compare model data with areal marine surveys. Since it is difficult to carry out this type of work in the high-latitude Arctic, it is possible to use individual route measurements to study the characteristics of the gravitational field, especially on extended profiles.
The estimates were made using data obtained during measurements on individual extended profiles and profile systems conducted at different times and at different latitudes. The calculations were performed taking into account the full gradient (second derivatives) of the anomalous field, previously calculated for the entire high-latitude Arctic region. The most current global gravity field models were considered: EGM2008, WGM2012, XGM2019, SGG-UGM-2, DTU21 and Sandwell and Smith versions SSv29 and SSv32. It was found that the accuracy of these models in the Arctic is several times lower than on similar structures located in open and more southern waters. There are also regional features associated with the specific topography of the Arctic Ocean bottom and affecting the accuracy of model data. In addition, the set of models of different years included in the analysis shows the increase in the accuracy of newer and more detailed models in the Arctic, as well as in other water areas, from 2008 to 2022.
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Wu Y., Wang J., Abulaitijiang A., He X., Luo Z., Shi H., Wang H., Ding Y., Local Enhancement of Marine Gravi-ty Field over the Spratly Islands by Combining Satellite SAR Altimeter-Derived Gravity Data, Remote Sensing, 2022, vol. 14, iss. 3, 19 p. DOI: 10.3390/rs14030474
Zhang S., Abulaitijiang A., Andersen A.B., Sandwell D.T., Beale J.R., Comparison and evaluation of hight-resolution marine gravity recovery via sea surface heights or sea surface slopes, Journal of Geodesy, 2021, vol. 95, 17 p. DOI: 10.1007/s00190-021-01506-8
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Andersen O.B., Marine Gravity and Geoid from Satellite Altimetry, in Geoid Determination – Theory and Meth-ods. Lecture Notes in Earth Science. Vol. 110, Berlin, Springer, 2013, pp. 401-451.
Andersen O.B., Knudsen P., The DTU17 global marine gravity field: First validation results, in International Association of Geodesy Symposia, Cham, Springer, 2020, pp. 83-87. DOI: 10.1007/1345_2019_65
Balmino G., Vales N., Bonvalot S., Briais A., Spherical harmonic modelling to ultra-high degree of Bouguer and isostatic anomalies, Journal of Geodesy, 2012, vol. 86, pp. 499-520.
Bekhterev S.V., Drobyshev M.N., Zheleznyak L.K., Koneshov V.N., Mikhailov P.S., Solovyev V.N., Errors of Earth Gravity Models as depending on seafloor morphology, Izvestiya, Physics of the Solid Earth, 2019, vol. 55, no. 5, pp. 806-810. DOI: 10.1134/S1069351319050021
Chen X., Kong X., Zhou R., Zhang S., Fusion of altimetry-derived model and ship-borne data in preparation of high-resolution marine gravity determination, Geophysical Journal International, 2024, vol. 236, pp. 1262-1274. https://doi.org/10.1093/gji/ggad471
Koneshov V.N., Nepoklonov V.B., Studying the representation accuracy of the Earth’s gravity field in the polar regions based on the global geopotential models, Izvestiya, Physics of the Solid Earth, 2018, vol. 54, no. 3, pp. 504-512. DOI: 10.1134/S1069351318030047
Koneshov V.N., Nepoklonov V.B., Solovyev V.N., Zheleznyak L.K., Comparison of modern global ultra-high-grade models of the Earth gravitational field, Geofizicheskie issledovaniya (Geophysical Research), 2019, vol. 20, no. 1, pp. 13-26. [In Russian]. https://doi.org/10.21455/gr2019.1-2
Koneshov V.N., Nepoklonov V.B., Stolyarov I.A., Study of the anomalous gravity field in the Arctic based on modern geopotential models, Izvestiya, Physics of the Solid Earth, 2012, vol. 48, no. 7, pp. 587-593.
Li Q., Bao L., Wang Y., Accuracy Evaluation of Altimeter-Derived Gravity Field Models in Offshore and Coastal Regions of China, Frontiers in Earth Science, 2021, vol. 9, 11 p. DOI: 10.3389/feart.2021.722019
Liang W., Li J., Xu X., Zhang S., Zhao Y., A High-Resolution Earth’s Gravity Field Model SGG-UGM-2 from GOCE, GRACE, Satellite Altimetry, and EGM2008, Engineering, 2020, vol. 6, iss. 8, pp. 860-878. https://doi.org/10.1016/j.eng.2020.05.008
Ling Z., Zhao L., Zhang T., Zhai G., Yang F., Comparison of Marine Gravity Measurements from Shipborne and Satellite Altimetry in the Arctic Ocean, Remote Sensing, 2022, vol. 14, iss. 1, 11 p.
Mikhailov P.S., Koneshov V.N., Pogorelov V.V., Spesivtsev A.A., Solovyev V.N., Zheleznyak L.K., High-Degree Models of the Earth’s Gravity Field: History of Development, Assessment of Prospects and Resolution, Seismic Instruments, 2021, vol. 57, no. 4, pp. 446-461. DOI: 10.3103/S0747923921040083
Mikhailov P.S., Koneshov V.N., Solovyev V.N., Zheleznyak L.K., New Results of Estimation of Modern Global Ultrahigh-Degree Models of the Earth’s Gravity Field in the World Ocean, Gyroscopy and Navigation, 2022, vol. 13, no. 4, pp. 210-221. DOI: 10.1134/S2075108722040095
Pavlis N.K., Holmes S.A., Kenyon S.C., Factor J.K., The development and evaluation of the Earth Gravitational Model 2008 (EGM2008), Journal of Geophysical Research: Solid Earth, 2012, vol. 117, 38 p. DOI: 10.1029/2011JB008916
Rambat S., Abdullah N.M., Yaacob N., Othman N.A., Abidin Z., Comparison of Gravity Anomalies from Re-cent Global Geopotential Models with Terrestrial Gravity and Airborne Gravity over Johor Region, Inter-national Journal of Integrated Engineering, 2021, vol. 13, no. 3, pp. 79-86.
Sandwell D.T., Harper H., Tozer B., Smith W.H.F., Gravity field recovery from geodetic altimeter missions,
Advances in Space Reaserch, 2021, vol. 68, iss. 2, pp. 1059-1072. DOI: 10.1126/science.1258213
Sokolov A.V., Krasnov A.A., Koneshov V.N., Glazko V.V., The first high-precision gravity survey in the North Pole region, Izvestiya, Physics of the Solid Earth, 2016, vol. 52, no. 2, pp. 254-258. DOI: 10.1134/S1069351316020129
Wu Y., Wang J., Abulaitijiang A., He X., Luo Z., Shi H., Wang H., Ding Y., Local Enhancement of Marine Gravi-ty Field over the Spratly Islands by Combining Satellite SAR Altimeter-Derived Gravity Data, Remote Sensing, 2022, vol. 14, iss. 3, 19 p. DOI: 10.3390/rs14030474
Zhang S., Abulaitijiang A., Andersen A.B., Sandwell D.T., Beale J.R., Comparison and evaluation of hight-resolution marine gravity recovery via sea surface heights or sea surface slopes, Journal of Geodesy, 2021, vol. 95, 17 p. DOI: 10.1007/s00190-021-01506-8
Zingerle P., Pail R., Gruber T., Oikonomidou X., The combined global gravity field model XGM2019e, Journal of Geodesy, 2020, vol. 94, 12 p. DOI: 10.1007/s00190-020-01398-0