Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2018, Vol. 15, No. 2, pp. 263-266
Statistical relationship between GRACE satellite data and total global solar radiation values
O.V. Rybas
1 , G.Z. Gil’manova
1 1 Yu. A. Kosygin Institute of Tectonics and Geophysics FEB RAS, Khabarovsk, Russia
Accepted: 19.03.2018
DOI: 10.21046/2070-7401-2018-15-2-263-266
Visualizing the GRACE satellite data for the entire observation period as a three-dimensional (3D) feature enabled Gaussian filters to be used to remove short-period components of the initial signal. The 3D model was then converted into multiple raster images or frames with a 30-day interval sequenced together to create an animation which made it possible to identify both periods of change in the Earth’s gravity field and periods of relative stability in different regions of the planet. To formally assess these gravity variations, the root-mean-square deviation (dispersion) of the global-average thickness of the active water layer was chosen (deviation of the gravity field intensity at a given point of the orbit from the multi-year average converted to equivalent water thickness) for each 30 day observation period. Dispersion curves were plotted for the entire observation period both for individual regions and for the whole world. Dispersion curves of each of the regions examined have their own distinctive features but synchronous points of increase and decrease are typical of all of them. Comparison of these curves with the solar activity plots showed their consistency.
Keywords: GRACE satellite, Gaussian smoothing, Scale-Space, geodynamics, lithosphere plates, seismicity
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