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Fig. 2 | Progress in Earth and Planetary Science

Fig. 2

From: Estimation of temporal and spatial variation of sound speed in ocean from GNSS-A measurements for observation using moored buoy

Fig. 2

Outline of conducted observation using vessel for six observational epochs. a Two-dimensional ship track maps. Pink squares and star symbols represent seafloor units and the point where observations for conductivity, temperature, and depth (CTD) were conducted. b The variation of sound speed in ocean along to the depth. c The sound speed perturbation calculated by Eq. (2)

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