InSAR time-series for the Kirishima volcanic complex in Kyushu, Japan from ALOS and ALOS-2

This repository contains the InSAR displacement products used in Yunjun et al. (2021, GRL). It includes the InSAR observations (time-series and average velocity) and geodetic modeling results of the Kirishima volcanic complex from ALOS during 2006-2011 and from ALOS-2 during 2015-2019 in both ascending and descending orbits. 

• Yunjun, Z., Amelung, F., & Aoki, Y. (2021), Imaging the hydrothermal system of Kirishima volcanic complex with L-band InSAR time series, Geophysical Research Letters, 48(11), e2021GL092879. doi:10.1029/2021GL092879

SAR data Overview:

• ALOS ascending track 424 frame 620-630 (24 June 2006 - 7 April 2011; 29 acquisitions)
• ALOS descending track 73 frame 2970-2980 (7 January 2007 - 20 April 2011; 21 acquisitions)
• ALOS-2 ascending track 131 frame 620 (30 September 2014 - 2 July 2019; 36 acquisitions)
• ALOS-2 descending track 23 frame 2970 (9 Feburay 2015 - 19 August 2019; 49 acquisitions)

InSAR stack in HDF5/MintPy format:

• AlosAT424F620_630.tar.gz: https://zenodo.org/record/4499238
• AlosDT73F2970_2980.tar.gz: https://zenodo.org/record/4499238
• Alos2AT131F620.tar.gz: https://zenodo.org/record/4499208
• Alos2DT23F2970.tar.gz: https://zenodo.org/record/4499208

InSAR time-series (for all acquisitions) in HDF-EOS5 format:

• ALOS_SM_424_0620_0630_20060624_20110407_N31880_N31980_E130820_E130920.he5
• ALOS_SM_073_2970_2980_20070107_20110420_N31880_N31980_E130820_E130920.he5
• ALOS2_SM_131_0620_20140930_20190702_N31880_N31980_E130820_E130920.he5
• ALOS2_SM_023_2970_20150209_20190819_N31880_N31980_E130820_E130920.he5

InSAR time-series (for acquisitions before destructive eruptions for better spatial coverage, e.g. including the Shinmoe-dake crater) in HDF-EOS5 format:

• ALOS_SM_424_0620_0630_20060924_20101120_N31880_N31980_E130820_E130920.he5
• ALOS_SM_073_2970_2980_20070107_20110118_N31880_N31980_E130820_E130920.he5
• ALOS2_SM_131_0620_20140930_20171010_N31880_N31980_E130820_E130920.he5
• ALOS2_SM_023_2970_20150209_20170918_N31880_N31980_E130820_E130920.he5

InSAR average velocity in HDF5/MintPy format:

• VEL_ALOS_A424_20080929_20100705.h5
• VEL_ALOS_D073_20081012_20100302.h5
• VEL_ALOS2_A131_20150106_20171010.h5
• VEL_ALOS2_A131_20171219_20190702.h5
• VEL_ALOS2_D023_20150209_20170918.h5
• VEL_ALOS2_D023_20171211_20190819.h5

Unwrapped interferograms of the 2011 Shinmoe-dake eruption (reconstructed from time-series):

• AlosAT424_20100102_20101120.unw (pre-eruptive inflation).
• AlosAT424_20101120_20110220.unw (co-eruptive deflation + ash/tephrea deposit)
• AlosAT424_tempCoherence.cor (temporal coherence of the time-series)
• AlosDT73_20091130_20110118.unw (pre-eruptive inflation)
• AlosDT73_20110118_20110305.unw (ash/tephrea deposit)
• AlosDT73_tempCoherence.cor (temporal coherence of the time-series)

Unwrapped interferograms of the 2017 Shinmoe-dake eruption (reconstructed from time-series):

• Alos2AT131_20161206_20171219.unw (ash/tephrea deposit)
• Alos2DT23_20161031_20171211.unw (ash/tephrea deposit)

Geodetic Modeling

• Forward model: Compound Dislocation Models (CDM; Nikkhoo et al., 2016; Beauducel et al., 2020)
• Inversion software: Geodetic Bayesian Inversion Software (GBIS; Bagnardi and Hooper, 2018)
• Inputs: model_data.zip
• Outputs:
  • Deflation at Shinmoe-dake during 2008-2010 phreatic eruptions: model_Shinmoe2008post.zip
  • Inflation at Shinmoe-dake prior to the October 2017 magmatic eruption: model_Shinmoe2017pre.zip
  • Inflation at Iwo-yama before October 2017: model_Iwo2017pre.zip
  • Inflation at Iwo-yama after December 2017: model_Iwo2017post.zip

Useful links:

• HDF-EOS5 file (*.he5) structure is described in https://mintpy.readthedocs.io/en/latest/hdfeos5/.
• HDF5/MintPy file (*.h5) structure is described in https://mintpy.readthedocs.io/en/latest/api/data_structure/.
• Related Jupyter Notebooks at https://github.com/geodesymiami/2021_Kirishima.