Abstract
Volcanic activity of the Kilauea volcano on Hawaii Island has been activated since May 2018, and a large eruption continues to occur. These volcanic eruptions have caused the lava flow to drain, volcanic ash and volcanic gas-containing plume, which has caused a lot of damage to buildings, roads and the surrounding environment. In this study, we investigated the spread of lava flow due to eruption, the change of shape of crater and the situation of crustal deformation due to earthquake, using Sentinel-1 observation information of C band satellite SAR. The shape of the crater, changes in the surface of the ground due to lava flow and crustal deformation were effectively evaluated. The applicability to overview survey in disaster quickly response and continuous monitoring was considered from the survey results using these Sentinel-1 satellite images with all-weather characteristics that can be obtained in near real-time after satellite observation. As a result, the usefulness of the Sentinel-1 satellite was confirmed for the investigation of lava flow distribution and the diastrophismt due to volcanic eruption.
