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Table 1 Basic information of SAR images used in this study

From: Seasonal and transient surface displacements in the Kumamoto area, Japan, associated with the 2016 Kumamoto earthquake: implications for seismic-induced groundwater level change

  PALSAR Descending PALSAR-2 Descending Sentinel-1 Descending Sentinel-1 Ascending
The number of images 19 28 65 48
Path-frame 73–2960 23–2950
23––2960
163–483 156–105
Date of the first image 7 January 2007 18 April 2016 1 July 2016 16 November 2016
Date of the last image 5 March 2011 10 December 2018 30 December 2018 15 June 2018
Date of the master image 12 July 2008 19 September 2016 20 July 2017 15 May 2017
Mean incidence angle 38.7° 36.2° 39.2° 33.8°
Heading angle from North 190.2° 192.6° 192.9° -12.9°
Spatial resolution (r, az) (4.7 m, 3.2 m) (1.4 m, 2.1 m) (2.3 m, 14.0 m) (2.3 m, 14.0 m)
  1. All of acquisition dates of SAR images used in this study was provided in a supplemental information (Additional file 1: Tables S1 and S2). (r, az) for the spatial resolution represents the spatial resolution of the slant-range and azimuth direction, respectively