[SVC47-P33] Ground Deformation around Domestic Active Volcanoes detected by D-InSAR of ALOS-2/PALSAR-2 (2014 -2016)
Keywords:ALOS-2/PALSAR-2, InSAR, Domestic Active Volcano
PALSAR-2, an L-band SAR on ALOS-2, is useful to understand ground surface state, and its interferometric coherence is highly effective for the ground deformation observation. PALSAR-2 has higher efficiency than ALOS/PALSAR. It is short repeat observation cycle (14days) and has a high resolution sensor and can realize right-side and left-side observation. Therefore, we can use higher resolution and more frequently data. Under the cooperation of Meteorological Research Institute (MRI), JMA conducts D-InSAR using PALSAR-2 data around domestic active volcanoes and analysis results are used for the volcanic activity evaluation and judging eruption alert level such as the activation of Hakone volcano in 2015, the eruption of Kuchinoerabujima, the magma intrusion in Sakurajima (Secretariat of Satellite Analysis Group, Coordinating Committee for Prediction of Volcanic Eruption, 2016). In this presentation, we mainly report on the analysis results of the long-term pair (2014 to 2016.) around the domestic active volcanoes. The results were reported to Coordinating Committee for Prediction of Volcanic Eruption as well as the results of 2014 to 2015 (Ando, et al., 2016).
Some of PALSAR-2 data were prepared by the Japan Aerospace Exploration Agency (JAXA) via Coordinating Committee for the Prediction of Volcanic Eruption (CCPVE) as part of the project‘ALOS-2 Domestic Demonstration on Disaster Management Application’ of the Volcano Working Group. Also, we used some of PALSAR-2 data that are shared within PALSAR Interferometry Consortium to Study our Evolving Land surface (PIXEL). PALSAR-2 data belongs to JAXA. We would like to thank Dr.Ozawa (NIED) for the use of his RINC software. In the process of the InSAR, we used Digital Ellipsoidal Height Model (DEHM) based on ‘the digital elevation map 10m-mesh’ provided by GSI, and Generic Mapping Tools (P.Wessel and W.H.F.Smith, 1999) to prepare illustrations.