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Fig. 1 | Earth, Planets and Space

Fig. 1

From: Comment on “Earthquake-induced prompt gravity signals identified in dense array data in Japan” by Kimura et al.

Fig. 1

Low-frequency deficit induced by the instrument correction made by K19. Black lines show how an acceleration signal with flat spectrum is recorded by several sensors as a function of frequency (modified from Fig. S1 of K19). The V17 correction uses the complete instrument response of the STS1 and STS2 sensors (dashed and dotted lines, respectively) while the K19 correction uses a frequency-independent counts-to-velocity conversion factor (blue and red lines, respectively. The blue and red areas (for STS1 and STS2, respectively) highlight the difference between the two procedures in the analyzed frequency range, 0.002–0.03 Hz

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