Multi-sensor SAR geodetic imaging and modelling of santorini volcano post-unrest response

28Citations
Citations of this article
34Readers
Mendeley users who have this article in their library.

Abstract

Volcanic history of Santorini over recent years records a seismo-volcanic unrest in 2011-12 with a non-eruptive behavior. The volcano deformation state following the unrest was investigated through multi-sensor Synthetic Aperture Radar Interferometry (InSAR) time series. We focused on the analysis of Copernicus Sentinel-1, Radarsat-2 and TerraSAR-X Multi-temporal SAR Interferometric (MT-InSAR) results, for the post-unrest period 2012-17. Data from multiple Sentinel-1 tracks and acquisition geometries were used to constrain the E-W and vertical components of the deformation field along with their evolution in time. The interpretation of the InSAR observations and modelling provided insights on the post-unrest deformation pattern of the volcano, allowing the further re-evaluation of the unrest event. The increase of subsidence rates on Nea Kameni, in accordance with the observed change of the spatial deformation pattern, compared to the pre-unrest period, suggests the superimposition of various deformation sources. Best-fitting inversion results indicate two deflation sources located at southwestern Nea Kameni at 1 km depth, and in the northern intra-caldera area at 2 km depth. A northern sill-like source interprets the post-unrest deflation attributed to the passive degassing of the magma intruded at 4 km during the unrest, while an isotropic source at Nea Kameni simulates a prevailing subsidence occurring since the pre-unrest period (1992-2010).

Cite

CITATION STYLE

APA

Papageorgiou, E., Foumelis, M., Trasatti, E., Ventura, G., Raucoules, D., & Mouratidis, A. (2019). Multi-sensor SAR geodetic imaging and modelling of santorini volcano post-unrest response. Remote Sensing, 11(3). https://doi.org/10.3390/rs11030259

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free