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Figure 14 | Earth, Planets and Space

Figure 14

From: Systematic monitoring of instrumentation health in high-density broadband seismic networks

Figure 14

Relationship between medians of amplitude ratio and lag time error. (a) Relationship between medians of amplitude ratio and lag time error for the vertical component (gray circles). Upper and lower figures show values for 50 to 100 s and 100 to 200 s periods, respectively. Left and right figures are values for STS-1 and STS-2 seismometers, respectively. Red and blue circles in the STS-1 figures and green circles in the STS-2 figures are relationships for TMR, TKD, and SHR stations, respectively. Contour lines describe frequency distributions of circles for bins divided by grid lines in each figure. Thick lines in the STS-1 figures represent the relationship between amplitude ratio and lag time error against the normal response as a function of the damping factor, h, with the constant corner period, T 0, and one of T 0 with the constant h at the periods of 70 s for 50 to 100 s and of 140 s for 100 to 200 s. (b) Variation in amplitude and phase frequency response curve of STS-1 against the change of h with constant T 0. Vertical gray lines represent the period of 70 and 140 s. (c) Same as (b) but for variation against the change of T 0 with constant h.

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