By analyzing sulfur and volcanic ash entrained in ice cores, researchers pinpointed a caldera in the remote Kuril Islands as ...

Deep-sea sediment cores are vital to our understanding of the past and present oceans. They record the geological history of the ocean basins, providing evidence for changing climates, emerging ...

They then drilled into the seabed to extract sediment cores using a remote-controlled robot. The scientists discovered the radius of debris from the volcano ... they record a lot of information ...