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Tofua Arc at 20.9°S

Estratovolcán · Tonga · 296 m (submarino)

A plume and discolored water from a submarine eruption were observed in January 1999. This unnamed submarine volcano, 35 km NW of the Niu Aunofo lighthouse on Tongatapu Island, was constructed at the southern end of a submarine ridge segment of the Tofua volcanic arc extending NNE to Falcon Island. The first documented eruptions took place in 1911 and 1923. An ephemeral island was formed during this eruption in 1999; prior to this the summit was 13 m beneath the sea surface.
A plume and discolored water from a submarine eruption were observed in January 1999. This unnamed submarine volcano, 35 km NW of the Niu Aunofo lighthouse on Tongatapu Island, was constructed at the southern end of a submarine ridge segment of the Tofua volcanic arc extending NNE to Falcon Island. The first documented eruptions took place in 1911 and 1923. An ephemeral island was formed during this eruption in 1999; prior to this the summit was 13 m beneath the sea surface. · Foto: Photo by B. Hutchins, 1999 (published in Taylor, 1999).
Tipo
Estratovolcán
País
Tonga
Región
Tonga-Kermadec Volcanic Regions / Tofua Volcanic Arc
Altitud
296 m (submarino)
Coordenadas
-20.852, -175.550
Última erupción
2017
Contexto tectónico
Subduction zone / Oceanic crust (< 15 km)
Forma volcánica
Composite
Roca principal
No Data (checked)
Resumen geológico

An unnamed submarine volcano is located along the Tofua Volcanic Arc 35 km NW of the Niu Aunofo lighthouse on Tongatapu Island. The first documented eruptions took place in 1911 and 1923; an ephemeral island was formed in 1999. A submarine eruption in January 2017 produced discolored water visible in satellite imagery.

Historial de erupciones

Resumen (VEI en el tiempo)
Haga clic en una barra para ver erupciones individuales
1911~1922 · 1 erupciones · VEI máx. 01922~1932 · 1 erupciones · VEI máx. 01964~1975 · 1 erupciones · VEI máx. 01996~2006 · 1 erupciones · VEI máx. 12006~2017 · 1 erupciones · VEI máx. 019111932196419852006

Línea de tiempo detallada

  1. 2017VEI 0Observado
    2017-01-23 – 2017-01-31
    Submarine
  2. 1999VEI 1Observado
    1999-01-08 – 1999-01-14
  3. 1970VEI 0Observado
    1970-01-03 – 1970-01-03
  4. 1923VEI 0Observado
    1923-07-01 – En curso
  5. 1911VEI 0Observado
    1911-08 – En curso

Enlaces externos

⚠ Solo como referencia. No apto para respuesta ante emergencias.