Report on Kavachi (Solomon Islands) — 14 February-20 February 2024
Smithsonian Institution / US Geological Survey
Weekly Volcanic Activity Report, 14 February-20 February 2024
Managing Editor: Sally Sennert.
Please cite this report as:
Global Volcanism Program, 2024. Report on Kavachi (Solomon Islands) (Sennert, S, ed.). Weekly Volcanic Activity Report, 14 February-20 February 2024. Smithsonian Institution and US Geological Survey.
Kavachi
Solomon Islands
8.991°S, 157.979°E; summit elev. -20 m
All times are local (unless otherwise noted)
Satellite data showed distinct yellow-green discolored water in the vicinity of the submarine Kavachi volcano on 14 and 19 February. The discolored water extended 15-20 km SE and E.
Geological Summary. Named for a sea-god of the Gatokae and Vangunu peoples, Kavachi is located in the Solomon Islands south of Vangunu Island. Sometimes referred to as Rejo te Kvachi ("Kavachi's Oven"), this shallow submarine basaltic-to-andesitic volcano has produced ephemeral islands up to 1 km long many times since its first recorded eruption during 1939. Residents of the nearby islands of Vanguna and Nggatokae (Gatokae) reported "fire on the water" prior to 1939, a possible reference to earlier eruptions. The roughly conical edifice rises from water depths of 1.1-1.2 km on the north and greater depths to the SE. Frequent shallow submarine and occasional subaerial eruptions produce phreatomagmatic explosions that eject steam, ash, and incandescent bombs. On a number of occasions lava flows were observed on the ephemeral islands.
Source: Copernicus