Thermal anomaly and colour change at Mount Ruapehu caldera lake, New Zealand

Sentinel-2 MSI acquired on 19 February 2021 at 22:16:01 UTC
Sentinel-2 MSI acquired on 29 July 2021 at 22:16:11 UTC
Landsat8 OLI-TIRS acquired on 17 September 2021 at 22:00:16 UTC
Author(s): Sentinel Vision team, VisioTerra, France - svp@visioterra.fr
Keyword(s): Geohazard, volcano, caldera lake, New Zealand
Fig. 1 - S2 (29.07.2021) - Located on the Northern Island, Mount Ruapehu is one of New Zealand's most active volcanoes.
2D view
Fig. 2 - S2 (29.07.2021) - It now displays a grey caldera lake.
3D view
Fig. 3 - S2 (19.02.2021) - Its lake used to be bright blue.
3D view
Fig. 4 - L8 (17.09.2021) - The change of colour was caused by a volcanic thermal anomaly which disturbed the water.
3D view
The views expressed herein can in no way be taken to reflect the official opinion of the European Space Agency or the European Union.
Contains modified Copernicus Sentinel data 2025, processed by VisioTerra.
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