Application of time series INSAR (SBAS) method using Sentinel-1 for monitoring ground deformation of the Aegina Island (Western Edge of Hellenic Volcanic Arc)

0585847 - GFÚ 2025 RIV CH eng J - Journal Article
Kalavrezou, I. E. - Castro-Melgar, Ignacio - Nika, D. - Gatsios, T. - Lalechos, S. - Parcharidis, I.
Application of time series INSAR (SBAS) method using Sentinel-1 for monitoring ground deformation of the Aegina Island (Western Edge of Hellenic Volcanic Arc).
Land. Roč. 13, č. 4 (2024), č. článku 485. E-ISSN 2073-445X
Institutional support: RVO:67985530
Keywords : volcanic risk * ground deformation * SBAS method * Sentinel-1 * Aegina Island * Hellenic Volcanic Arc
OECD category: Volcanology
Impact factor: 3.9, year: 2022
Method of publishing: Open access
https://www.mdpi.com/2073-445X/13/4/485

This study employs advanced synthetic aperture radar (SAR) techniques, specifically the small baseline subset (SBAS) method, to analyze ground deformation dynamics on Aegina, a volcanic island within the Hellenic Volcanic Arc. Using Sentinel-1 satellite data spanning January 2016 to May 2023, this research reveals different deformation behaviors. The towns of Aegina and Saint Marina portray regions of stability, contrasting with central areas exhibiting subsidence rates of up to 1 cm/year. The absence of deformation consistent with volcanic activity on Aegina Island aligns with geological records and limited seismic activity, attributing the observed subsidence processes to settlement phenomena from past volcanic events and regional geothermal activity. These findings reinforce the need for continuous monitoring of the volcanic islands located in the Hellenic Volcanic Arc, providing important insights for local risk management, and contributing to our broader understanding of geodynamic and volcanic processes.
Permanent Link: https://hdl.handle.net/11104/0353640