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Report on Lateiki (Tonga) — 13 November-19 November 2019


Lateiki

Smithsonian Institution / US Geological Survey
Weekly Volcanic Activity Report, 13 November-19 November 2019
Managing Editor: Sally Sennert.

Please cite this report as:

Global Volcanism Program, 2019. Report on Lateiki (Tonga) (Sennert, S, ed.). Weekly Volcanic Activity Report, 13 November-19 November 2019. Smithsonian Institution and US Geological Survey.

Weekly Report (13 November-19 November 2019)

Lateiki

Tonga

19.18°S, 174.87°W; summit elev. 43 m

All times are local (unless otherwise noted)


Satellite images showed that the mid-October eruption at Lateiki (Metis Shoal) had formed a new and larger island, but by 14 November it had eroded to a size similar to the pre-eruptive size.

Geological Summary. Lateiki, previously known as Metis Shoal, is a submarine volcano midway between the islands of Kao and Late that has produced a series of ephemeral islands since the first confirmed activity in the mid-19th century. An island, perhaps not in eruption, was reported in 1781 and subsequently eroded away. During periods of inactivity following 20th-century eruptions, waves have been observed to break on rocky reefs or sandy banks with depths of 10 m or less. Dacitic tuff cones formed during the eruptions in 1967 and 1979 were soon eroded beneath the ocean surface. An eruption in 1995 produced an island with a diameter of 280 m and a height of 43 m following growth of a lava dome above the surface.

Source: Simon Carn