Articles | Volume 16, issue 9
https://doi.org/10.5194/essd-16-4119-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-16-4119-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
The SDUST2022GRA global marine gravity anomalies recovered from radar and laser altimeter data: contribution of ICESat-2 laser altimetry
Zhen Li
College of Geodesy and Geomatics, Shandong University of Science and Technology, Qingdao 266590, China
College of Geodesy and Geomatics, Shandong University of Science and Technology, Qingdao 266590, China
Chengcheng Zhu
School of Surveying and Geo-informatics, Shandong Jianzhu University, Jinan 250101, China
Xin Liu
College of Geodesy and Geomatics, Shandong University of Science and Technology, Qingdao 266590, China
Cheinway Hwang
Department of Civil Engineering, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan
Sergey Lebedev
Geophysical Center, Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, Russia
Xiaotao Chang
Land Satellite Remote Sensing Application Center, Ministry of Natural Resources, Beijing 100048, China
Anatoly Soloviev
Geophysical Center, Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, Russia
Heping Sun
State Key Laboratory of Geodesy and Earth's Dynamics, Innovation Academy of Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430077, China
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Accurate marine gravity anomalies play an important role in the fields of submarine topography, Earth structure, and submarine exploitation. With the launch of different altimetry satellites, the density of altimeter data can meet the requirements of inversion of high-resolution and high-precision gravity anomaly models. We construct the global marine gravity anomaly model (SDUST2021GRA) from altimeter data (including HY-2A). The accuracy of the model is high, especially in the offshore area.
Related subject area
Domain: ESSD – Ocean | Subject: Marine geology
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Zhu, C., Guo, J., Yuan, J., Li, Z., Liu, X., and Gao, J.: SDUST2021GRA: global marine gravity anomaly model recovered from Ka-band and Ku-band satellite altimeter data, Earth Syst. Sci. Data, 14, 4589–4606, https://doi.org/10.5194/essd-14-4589-2022, 2022.
Zingerle, P., Pail, R., Gruber, T., and Oikonomidou, X.: The combined global gravity field model XGM2019e, J. Geodesy, 94, 66, https://doi.org/10.1007/s00190-020-01398-0, 2020.
Short summary
A new global marine gravity model, SDUST2022GRA, is recovered from radar and laser altimeter data. The accuracy of SDUST2022GRA is 4.43 mGal on a global scale, which is at least 0.22 mGal better than that of other models. The spatial resolution of SDUST2022GRA is approximately 20 km in a certain region, slightly superior to other models. These assessments suggest that SDUST2022GRA is a reliable global marine gravity anomaly model.
A new global marine gravity model, SDUST2022GRA, is recovered from radar and laser altimeter...
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