Figure 7
From: Time-varying land subsidence detected by radar altimetry: California, Taiwan and north China
(a) TP altimeter Waveforms A–E over different surface types along Pass 043 (TP-043), covering the croplands of the San Joaquin Valley, (b) Waveforms A–E along TP-062 over the croplands of the North China Plain. The topography is from the digital elevation model of SRTM15_PLUS37 and the cropland cover is from Global Land Cover (GLC)-SHARE38, beta-release 1.0. Radar altimetry with Waveform C produces accurate vertical displacement rates (less than 1 cm yr−1) in flat lands with more than 50% crop cover. GMT36 V5.1.3 is used to plot Fig. 7 (http://gmt.soest.hawaii.edu/).
