Between January 15 and 18, 2025, Hawaii’s Kīlauea volcano entered a new eruptive phase, marking the fourth eruption since December 23, 2024. This renewed activity captivated volcanologists and the public alike, offering a dramatic display of nature’s power.

The Hawaiian Volcano Observatory confirmed that the eruption was confined to the Halemaʻumaʻu crater within the Kīlauea summit caldera. A striking aspect of this episode was the presence of episodic lava fountaining, a rare phenomenon that has not been seen in Kīlauea’s recent eruptions.

Satellite imagery: Kīlauea Volcano, Hawaii
Kīlauea Volcano, Hawaii. Credit: European Union, Copernicus Sentinel-2 imagery

This image, captured by the Copernicus Sentinel-2 satellite on January 21, 2025, reveals the lingering thermal signature of cooling lava from the eruption.

The Copernicus Sentinel satellites, operated by the European Space Agency, continue to play a vital role in monitoring volcanic activity worldwide, providing invaluable data to researchers and authorities. These insights are crucial for improving safety measures for communities living in the shadow of volcanoes.

Featured image credit: European Union, Copernicus Sentinel-2 imagery

Researchers analyzed sediment core samples collected by D/V JOIDES Resolution near Cape Town, South Africa. Their findings uncovered details about the changes in deep ocean temperature and salinity, as well as the mixing histories of waters originating in both the northern and southern hemispheres. Credit: Sophie Hines | ©Woods Hole Oceanographic Institution
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