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Modern Geomatics Technologies and Applications

Figure 3.The range-rate changes at different scenarios (a) GRACE; (b) GRACE-FO; (c) Cartwheel; (d)
Pendulum; (e) Helix with real strike angle of 19 degrees (vertical axes: m/s; Horizontal axes: days)

The red dots in Figure 3 are the part of signals that satellites received passing from close range to the
earthquake zone. This can also be seen in Figure 1 inside the red rectangle. As seen in the figure, the high

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