Use of Marine Gravimetric Survey Data for Correcting the Satellite Models of the Global Gravity Field in the World Ocean
EDN: RVGALY
Abstract
The article studies the possibilities of using the high-precision marine gravimetric survey data to correct the global models of the Earth’s gravity field in the World Ocean. The accuracy of modern models in water areas on a regional scale is determined by the capabilities of the satellite altimetry method and depends on the gravity field characteristics. On the gradient structures of the field, the amplitudes of real anomalies are suppressed in the models; therefore, for the models to be used more efficiently, it is necessary to restore high frequencies of anomalies in these models. On the abyssal structures, the main error in models is high-frequency noise. This paper describes the techniques for correcting the data obtained from these models, which makes it possible to increase the accuracy over fairly large areas, using a limited number of marine gravimetric measurements. The paper also provides the practical assessments of the new global altimetry model of the Earth’s gravity field Sandwell and Smith v32 in various regions of the World Ocean.
Supporting agencies: The work was carried out with the financial support of the Russian Science Foundation under grant 22-17-20035
About the Author
P. S. Mikhailov
Schmidt Institute of Physics of the Earth, Russian Academy of Sciences; Vladimir State University Named after Alexander and Nikolay Stoletov
Russian Federation
Russian Federation
Moscow; Vladimir
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For citations:
Mikhailov P.S. Use of Marine Gravimetric Survey Data for Correcting the Satellite Models of the Global Gravity Field in the World Ocean. Gyroscopy and Navigation. 2023;31(3):66-77. (In Russ.) EDN: RVGALY
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