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Esmeralda Bank

Stratovulcano · United States · 74 m (sottomarino)

A bathymetric model with 2x vertical exaggeration shows the Esmeralda Bank submarine volcano, as seen from the NW. Depths in this image range from 54 to 2,052 m. Bathymetry data (~25 m resolution) is overlaid on SeaBat data (~50 m resolution) courtesy of Yoshihiko Tamura (JAMSTEC). The main central edifice seen here has a 3-km summit crater open to the W. Sulfur and water discoloration from eruptive or geothermal activity have frequently been observed.
A bathymetric model with 2x vertical exaggeration shows the Esmeralda Bank submarine volcano, as seen from the NW. Depths in this image range from 54 to 2,052 m. Bathymetry data (~25 m resolution) is overlaid on SeaBat data (~50 m resolution) courtesy of Yoshihiko Tamura (JAMSTEC). The main central edifice seen here has a 3-km summit crater open to the W. Sulfur and water discoloration from eruptive or geothermal activity have frequently been observed. · Foto: Image courtesy of Susan Merle (Oregon State University/NOAA Vents Program). · Wikimedia Commons
Tipo
Stratovulcano
Paese
United States
Regione
Northwestern Pacific Volcanic Regions / Mariana Volcanic Arc
Altitudine
74 m (sottomarino)
Coordinate
14.958, 145.249
Ultima eruzione
Sconosciuto
Contesto tettonico
Subduction zone / Crustal thickness unknown
Forma vulcanica
Composite
Roccia principale
Basalt / Picro-Basalt
Sintesi geologica

Esmeralda Bank is a massive submarine volcano with three cones oriented N-S over about 15 km. The high points on the crater rim of the large middle edifice, with a collapse scarp open to the W, are about 75 m below the ocean surface. Frequent sulfur-rich surface bubbling and water discoloration have been observed, which have variously been attributed to eruptive events or fumarolic activity.

Sintesi da Wikipedia

Riassunto in inglese

Esmeralda Bank is a submarine volcano around 37 km west of Tinian Island of the Northern Mariana Islands in the Pacific Ocean. It is located at the southern end of the Mariana Arc. It has three summit cones lying along a north–south line. The highest peak is about 43 meters below the sea surface and has a caldera about 3 kilometers wide and several parasitic cones on the edge of the caldera. Sulfur boils and water discoloration have been observed at the site of the volcano, attributed to either eruptions or fumarolic activity.

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Storia delle eruzioni

Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni
1944~1948 · 1 eruzioni · VEI max. 01961~1966 · 1 eruzioni · VEI max. 21970~1974 · 1 eruzioni · VEI max. 01974~1978 · 1 eruzioni · VEI max. 01978~1983 · 1 eruzioni · VEI max. 01983~1987 · 1 eruzioni · VEI max. 019441953196619741983

Cronologia dettagliata

  1. 1987VEI 0Stima geologica
    1987-05-26 – In corso
  2. 1982VEI 0Stima geologica
    1982-04-06 – In corso
  3. 1975VEI 0Stima geologica
    1975-04-26 – 1975-04-29
  4. 1970 (±1 anni)VEI 0Stima geologica
    1970-07-02 – In corso
  5. 1964VEI 2Stima geologica
    1964-04-14 – In corso
  6. 1944VEI 0Stima geologica
    1944-08-20 – In corso

Link esterni

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