# Volcanoes
**URL:** https://portal.geohazards-tep.eu/c/volcanoes/22.md
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## [Volcanoes Topics](https://portal.geohazards-tep.eu/t/volcanoes-topics/87)
**Author:** [@system](https://portal.geohazards-tep.eu/u/system)\
**Replies:** 0\
**Last updated:** [May 18, 2026, 12:19pm UTC](https://portal.geohazards-tep.eu/t/volcanoes-topics/87 "2026-05-18T12:19:33Z")
Volcano-related Earth Observation applications supported by GEP, including volcanic deformation monitoring, thermal anomaly detection, vegetation stress analysis, event response, and long-term observation of volcanic are…
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## [Volcanic eruption in Philippines (May 2026)](https://portal.geohazards-tep.eu/t/volcanic-eruption-in-philippines-may-2026/143)
**Author:** [@system](https://portal.geohazards-tep.eu/u/system)\
**Replies:** 0\
**Last updated:** [May 24, 2026, 1:03pm UTC](https://portal.geohazards-tep.eu/t/volcanic-eruption-in-philippines-may-2026/143 "2026-05-24T13:03:29Z")
Mayon Volcano in the Philippines erupted in early May 2026. This recent publicly reported event may be useful for the GEP community as a starting point to look at available EO data, inspect changes around the volcano, an…
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## [São Jorge Island (Azores) volcano-seismic crisis (March 2022)](https://portal.geohazards-tep.eu/t/sao-jorge-island-azores-volcano-seismic-crisis-march-2022/107)
**Author:** [@system](https://portal.geohazards-tep.eu/u/system)\
**Replies:** 0\
**Last updated:** [May 22, 2026, 3:04pm UTC](https://portal.geohazards-tep.eu/t/sao-jorge-island-azores-volcano-seismic-crisis-march-2022/107 "2026-05-22T15:04:14Z")
The island of Sao Jorge, in the Azores, has registered more than 20,000 small earthquakes, with magnitudes up to 3.8, since 19 March 2022. The activity started under the NW part of the island and is most likely caused b…
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## [Three observations of the Semeru volcano in Java using Sentinel-1 GRD data](https://portal.geohazards-tep.eu/t/three-observations-of-the-semeru-volcano-in-java-using-sentinel-1-grd-data/100)
**Author:** [@system](https://portal.geohazards-tep.eu/u/system)\
**Replies:** 0\
**Last updated:** [May 22, 2026, 2:35pm UTC](https://portal.geohazards-tep.eu/t/three-observations-of-the-semeru-volcano-in-java-using-sentinel-1-grd-data/100 "2026-05-22T14:35:57Z")
Does this simple color composite help better understand the impact of the eruption? The radiometric inversion makes the perception of relief more evident and backscatter changes on the East side show up in redish. This i…
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## [Santorini Volcano Experiencing Another Unrest Phase](https://portal.geohazards-tep.eu/t/santorini-volcano-experiencing-another-unrest-phase/139)
**Author:** [@system](https://portal.geohazards-tep.eu/u/system)\
**Replies:** 0\
**Last updated:** [February 13, 2025, 11:00pm UTC](https://portal.geohazards-tep.eu/t/santorini-volcano-experiencing-another-unrest-phase/139 "2025-02-13T23:00:00Z")
The Santorini volcano, known for the devastating Minoan eruption in 1600 BC, is part of the Hellenic Volcanic Arc in the Southern Aegean Sea and is classified as a caldera-forming system that experiences long-term period…
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## [GEP services for volcano monitoring](https://portal.geohazards-tep.eu/t/gep-services-for-volcano-monitoring/115)
**Author:** [@system](https://portal.geohazards-tep.eu/u/system)\
**Replies:** 0\
**Last updated:** [August 21, 2022, 10:00pm UTC](https://portal.geohazards-tep.eu/t/gep-services-for-volcano-monitoring/115 "2022-08-21T22:00:00Z")
Volcanic eruptions are usually preceded by anomalous signs that can indicate their next occurrence. The rise of magma through mantle and crust can cause different kind of interrelated processes: increase of the pressure …
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## [Lava flows over Etna, Sicily, seen by Sentinel-2 using swir16 data](https://portal.geohazards-tep.eu/t/lava-flows-over-etna-sicily-seen-by-sentinel-2-using-swir16-data/108)
**Author:** [@system](https://portal.geohazards-tep.eu/u/system)\
**Replies:** 0\
**Last updated:** [May 19, 2022, 10:00pm UTC](https://portal.geohazards-tep.eu/t/lava-flows-over-etna-sicily-seen-by-sentinel-2-using-swir16-data/108 "2022-05-19T22:00:00Z")
The Sentinel-2 mission of the Copernicus programme is helping better understand hazards.The multispectral bands of the sensor allow to map volcanic activity with synoptic, up-to-date and spectrally accurate information. …
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## [Hunga Tonga eruption of January 15, 2022 (Tonga) on the Mango island](https://portal.geohazards-tep.eu/t/hunga-tonga-eruption-of-january-15-2022-tonga-on-the-mango-island/102)
**Author:** [@system](https://portal.geohazards-tep.eu/u/system)\
**Replies:** 0\
**Last updated:** [January 24, 2022, 11:00pm UTC](https://portal.geohazards-tep.eu/t/hunga-tonga-eruption-of-january-15-2022-tonga-on-the-mango-island/102 "2022-01-24T23:00:00Z")
On January 15, 2022, a massive eruption occurred at the Hunga Tonga volcano, Tonga. The eruption released a large cloud of ashes visible from space and a tsunami alarm was triggered over the entire Pacific. The same day…
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## [LOS displacement time series confirms elevated volcanic activity over Taal volcano (March 2019 - Jan 2020))](https://portal.geohazards-tep.eu/t/los-displacement-time-series-confirms-elevated-volcanic-activity-over-taal-volcano-march-2019-jan-2020/97)
**Author:** [@fpacini](https://portal.geohazards-tep.eu/u/fpacini)\
**Replies:** 0\
**Last updated:** [January 21, 2020, 11:00pm UTC](https://portal.geohazards-tep.eu/t/los-displacement-time-series-confirms-elevated-volcanic-activity-over-taal-volcano-march-2019-jan-2020/97 "2020-01-21T23:00:00Z")
As per the Department of Science and Technology (DOST) of PHIVOLCS, cumulative elevation changes of the volcanic edifice based on precise leveling (PL) measurements on March 2019 indicated slightly inflation of the Taal …
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## [Operational monitoring of volcanic eruptions and their impact on agriculture and vegetation](https://portal.geohazards-tep.eu/t/operational-monitoring-of-volcanic-eruptions-and-their-impact-on-agriculture-and-vegetation/94)
**Author:** [@system](https://portal.geohazards-tep.eu/u/system)\
**Replies:** 0\
**Last updated:** [January 9, 2018, 11:00pm UTC](https://portal.geohazards-tep.eu/t/operational-monitoring-of-volcanic-eruptions-and-their-impact-on-agriculture-and-vegetation/94 "2018-01-09T23:00:00Z")
Since January 2017, operational monitoring of 22 worldwide volcanoes has been available on the Geohazards Exploitation Platform of ESA (GEP), thanks to the work conducted in the VEGAN project and in collaboration with th…
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## [Villarrica volcano (March 2015)](https://portal.geohazards-tep.eu/t/villarrica-volcano-march-2015/69)
**Author:** [@fpacini](https://portal.geohazards-tep.eu/u/fpacini)\
**Replies:** 0\
**Last updated:** [June 15, 2016, 10:00pm UTC](https://portal.geohazards-tep.eu/t/villarrica-volcano-march-2015/69 "2016-06-15T22:00:00Z")
A Red Alert has been declared in southern Chile after the eruption of the Villarrica volcano early on 3 March. Thousands of residents in the area have been evacuated and the International Charter Space & Major Disasters …