Fig. 3

Temporal LOS changes on Oana crater. a, b LOS changes acquired from PALSAR-2 (P2) Path 124 (red circles and triangles) and Sentinel-1 (S1) Path 141 (black dots), and PALSAR-2 Path 18 (blue circles and triangles) and Sentinel-1 Path 46 (black dots). Plots of Sentinel-1 data were extracted on only Point S and S′. The positions of Point S, S′, T, T′ are shown in Fig. 2. Reference dates are October 17, 2017 and November 30, 2017 for P2 A124 and P2 D18, respectively. Incidence angles of PALSAR-2 Path 124 and that of Sentinel-1 Path 141 are 33.2 and 35.3 degrees, respectively