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Table 1 List of interferograms analyzed

From: Volcanic deformation of Atosanupuri volcanic complex in the Kussharo caldera, Japan, from 1993 to 2016 revealed by JERS-1, ALOS, and ALOS-2 radar interferometry

InSAR pair Acquisition date master image Acquisition date slave image Time span (day) Bp (m) Time series Maximum displacement (cm) Corrected maximum displacement (cm)
1 May 18, 1993 May 9, 1997 1452 159 C 13 13
2 August 13, 1993 April 21, 1995 616 −663 A 19 20
3 August 13, 1993 July 22, 1998 1804 45 A 10* 8*
4 September 13, 1994 August 31, 1995 352 −527 B 6 6
5 September 13, 1994 April 25, 1998 1320 −193 B −2 −2
6 April 21, 1995 April 7, 1996 352 736 A −3 −3
7 April 21, 1995 July 22, 1998 1188 712 A −9 −9
8 July 19, 1995 June 9, 1998 1056 478 D −11 −11
9 July 19, 1995 July 23, 1998 1100 −186 D −7 −7
10 August 31, 1995 October 31, 1997 792 −556 B −4 −4
11 August 31, 1995 April 25, 1998 968 333 B −7 −7
12 April 7, 1996 March 25, 1997 352 985 A −6 −5
13 March 25, 1997 June 8, 1998 440 227 A −3 −3
14 June 9, 1998 July 23, 1998 44 −659 D 3 3
A1 September 22, 2007 August 15, 2010 1058 819 E −6 −5
A2 May 9, 2008 November 15, 2010 920 310 F −4 −4
A3 August 9, 2014 August 6, 2016 728 −47 G −1 0
A4 August 25, 2014 June 13, 2016 658 22 H −2 −1
A5 September 29, 2014 July 4, 2016 644 8 I −1 0
  1. JERS-1 data are used in InSAR pairs 1–14, ALOS data are used in A1 and A2, and ALOS-2 data are used in A3, A4, and A5. InSAR data were acquired from descending orbit except for InSAR pair A4. The off-nadir angle of JERS-1 is 35°, and that of A1, A2, A3, A4, and A5 is 34.3°, 34.3°, 29.1°, 32.4°, and 38.2°, respectively. Bp means a perpendicular baseline. There are nine time series; A–I. Temporal evolution of displacement can be obtained only from InSAR pairs belonging to the same time series. Maximum displacement shows the maximum displacement in LOS direction in each SAR interferogram. Corrected maximum displacement is obtained by subtracting constant small-scale displacement from the maximum displacement. *Because InSAR pair 3 was highly decorrelated and noisy, the maximum displacement value was not reliable