Hakim, W. L., Fadhillah, M. F., Lee, S., Park, S., Baek, W. K., Hong, C. K., ... & Lee, C. W. (2024). Time-series InSAR measurement using ICOPS and estimation of along-track surface deformation using MAI during the 2021 eruption of Fagradalsfjall Volcano, Iceland. Scientific Reports, 14(1), 30709 Click (a) Time-series LOS Surface Deformation Map via ICOPS (See Figure 5a): High-precision detection of non-linear line-of-sight (LOS) deformation around the Fagradalsfjall Volcano using the ICOPS algorithm, which is optimized through CNN and spatial clustering. (b) Ionosphere-corrected MAI Along-track Deformation Map (See Figure 6d): Successful extraction of subtle along-track surface displacement using ALOS-2 data after mitigating ionospheric artifacts with directional filtering, overcoming the limitations of conventional LOS observations. This study investigates the complex surface deformation and its correlation with seismic activity during the 2021 eruption of the Fagradalsfjall Volcano in Iceland, utilizing Sentinel-1 and ALOS-2 SAR data. By employing the ICOPS algorithm—which integrates persistent (PS) and distributed (DS) scatterers and applies CNN-based optimization—the research achieves high-precision extraction of non-linear surface displacements. Ultimately, the cross-sectional analysis combining deformation maps with earthquake distribution and Multiple Aperture Interferometry (MAI) provides a multidimensional understanding of the subsurface magma intrusion mechanisms. Continue reading...
