Fig. 4
From: Nationwide urban ground deformation in Japan for 15 years detected by ALOS and Sentinel-1
Deformation in 022 Hirosaki, Aomori. a and b are the vertical deformation velocities derived from ALOS and Sentinel-1, respectively. The black dashed lines are the boundaries of the DID. The black solid lines denote the 5 mm/year contour lines without the 0 mm/year lines. The gray areas in b denote the rice paddy fields. The dashed black rectangles are the reference area for the time series. c The LOS deformation time series at P0211 and P0222 derived from ALOS (2006–2011, large circles) and Sentinel-1 (2014–2020, small rectangles) data. d The land-use and land-cover map