Publication Date:
2020-12-15
Description:
This paper shows the main outcomes of the Puyehue
volcano (Chile) eruption monitoring by means of multisensor
remote sensing instruments working from thermal infrared (TIR)
to microwave (MW) spectral range. Thanks to the use of Synthetic
Aperture Radar (SAR) and the Moderate Resolution Imaging
Spectroradiometer (MODIS), the eruption evolution was observed,
capturing the deformations of volcano edifice, the lava extension, as
well as the information on ash and gas emitted. On the one hand,
SAR Interferometry applied to ENVISAT-ASAR data allowed the
estimation of the deformation occurred just before the beginning of
the eruption and the subsequent deflation, with monthly sampling.
On the other hand, with the combined use of the very high resolution
(VHR) images taken by COSMO-SkyMed X-band
SAR, and ENVISAT-ASAR ones, we were able to follow the lava
deposition during the most intense phase of the eruption. Additionally,
the joined exploitation of SAR and optical MODIS images
allowed ash detection, also in cloudy sky conditions. Finally, the
information gathered by both types of sensors allowed to highlight
some volcanological features of the eruption and the relationship
between surface deformation and the amount of ash and gases
emitted by the volcano.
Description:
Published
Description:
2786 - 2796
Description:
5V. Sorveglianza vulcanica ed emergenze
Description:
JCR Journal
Description:
restricted
Keywords:
SAR interferometry
;
Ash
;
surface deformation
;
lava field
;
04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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