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Earth, Planets and Space
Fig. 3 | Earth, Planets and Space

Fig. 3

From: Detection of free core nutation resonance variation in Earth tide from global superconducting gravimeter observations

Fig. 3

a Sensitivity of ψ1 to FCN period variation. Three different markers represent the variation in amplitude factor for ψ1 wave caused by different FCN period changes in 36 synthetic time series; b sensitivity of K1 to FCN period variation. The green star is the theoretical FCN period set in 36 synthetic time series. The other four markers represent the variation in amplitude factor for K1 wave under different observation precisions

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