Hunga Tonga-Hunga Ha'apai ηφαίστειο

Submarine volcano 149 m / 489 ft
Tonga, Tonga Islands, -20.57°S / -175.38°W
Current status: minor activity or eruption warning (3 out of 5)
Last update: 22 Jan 2022 (SO2 plume reached Madagascar and East Africa today)

The small islands of Hunga Tonga and Hunga Ha'apai cap a large seamount located about 30 km SSE of Falcon Island, approximately 65 km NW of Vuna Wharf, Nuku'alofa, and 70 km SW of Nomuka Island.

Διαδραστικός χάρτης
Typical eruption style: δεν έχει καθοριστεί
Hunga Tonga-Hunga Ha'apai ηφαίστειο εκρήξεις: 2021, 2014, 2009, 1988
Lastest nearby earthquakes:
ΏραMag. / ΒάθοςΑπόσταση/Τοποθεσία
Τετάρτη, 19 Ιανουαρίου 2022 05:34 GMT (1 σεισμός)
19 Ιαν 2022 05:34 GMT
4.6

10 km
34 km (21 mi)
South Pacific Ocean, Τόνγκα

Background

The two linear andesitic islands are about 2 km long and represent the western and northern remnants of the rim of a largely submarine caldera lying east and south of the islands. Hunga Tonga and Hunga Ha'apai reach an elevation of only 149 m and 128 m above sea level, respectively, and display inward-facing sea cliffs with lava and tephra layers dipping gently away from the submarine caldera. A rocky shoal 3.2 km SE of Hunga Ha'apai and 3 km south of Hunga Tonga marks the most prominent historically active vent. Several submarine eruptions have occurred at Hunga Tonga-Hunga Ha'apai since the first historical eruption in 1912.
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Smithsonian / GVP volcano information


See also: Sentinel hub | Landsat 8 | NASA FIRMS
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