Submarine Volcanoes and Forearc Activity in the Solomon Islands

Submarine volcanoes in the New Georgia Group forearc region of the Solomon Islands are documented. The report details specific features like Kavachi volcano, which rises nearly 1000 m from the sea floor, and other potential volcanic sites. This information was compiled by the Australian Ocean Data Network and the record was last updated in April 2026.

Use Cases

• Mapping submarine volcano locations using described geographic positions relative to islands like Vangunu and Rendova.
• Analyzing volcanic composition and morphology from descriptions of basalt-andesite and andesite-rhyolite volcanoes.
• Studying historical volcanic activity reports, such as the 1963-4 event ascribed to Cook submarine volcano.
• Assessing bathymetric survey gaps to plan future swathe-mapping sonar surveys in the New Georgia Group forearc.

Strengths

• Describes specific submarine volcanic features with concrete measurements, such as Kavachi's 1000 m rise from the sea floor.
• Identifies a temporal record of activity, including a reported event from 1963-4.

Limitations

• Data is presented as a narrative report in PDF/HTML format without structured, machine-readable columns.
• The forearc region is described as 'very poorly surveyed bathymetrically', indicating incomplete spatial coverage.
• Some reported volcanic features, like the seamount 9 km northeast of Kavachi, lack confirmed verification.

Provenance

Source

Australian Ocean Data Network.

Collection Method

Compilation from historical reports, bathymetric surveys, and scientific observations.

Time Range

References historical activity (e.g., 1963-4) and surveys from 1979 and 1981.

Freshness

Record metadata indicates an update in April 2026, but the underlying observational data is from historical surveys (e.g., 1979, 1981).

Geography

Forearc region of the New Georgia Group, Solomon Islands, Southwest Pacific.