A weak phreatic eruption of June 2010 on Ekarma Volcano, Kuril Islands as a possible precursor of a future large magmatic eruption

We provide data concerning a weak phreatic eruption of Ekarma Volcano on Ekarma Island, in the Kurils, in June 2010. The ash plumes did not rise higher than 3 km above sea level. A preliminary estimate of the volume of erupted resurgent material (mostly tephra) is on order 2 × 10 5 m 3 . Reconstruction of the volcano’s history and the dynamics of its eruptive activity for the last 4500–5000 years suggests that a larger eruption can occur during the next few decades that will discharge juvenile pyroclastics and/or lava.