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Earth, Planets and Space
Fig. 4 | Earth, Planets and Space

Fig. 4

From: Surface deformation evolution in the Pearl River Delta between 2006 and 2011 derived from the ALOS1/PALSAR images

Fig. 4

Surface deformation in the PRD estimated by SBAS-InSAR. a The deformation rate map from 2007 to 2011. The red dotted line outlines the subsidence area. The blue and yellow rectangles are the overlapping areas of paths 460 and 461 in frame 440 (Area1) and 450 (Area2), respectively. The field observation was carried out in the place marked by yellow stars. b, c zoom-ins of areas B and C, respectively. S-1 and S-2 in b are two large subsidence cones. d The time series of the subsidence cone S-1. e, f the histograms of the difference of the average deformation rate of Area 1 and Area 2 derived from different frames, respectively

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