Tofua is a volcanic island in Tonga. Located in the Haʻapai island group, it is a steep-sided composite cone with a summit caldera . It is part of the highly active Kermadec-Tonga subduction zone and its associated volcanic arc , which extends from New Zealand north-northeast to Fiji , and is formed by the subduction of the Pacific Plate under ...

3 days ago · Tofua volcano is the subaerial part of a large frequently active stratovolcano. It forms the 8 km wide circular Tofua Island, dominated by the 5 km wide caldera containing a freshwater lake at only 30 m above sea level and surrounded by steep 300 m cliffs.

Tofua is a remote volcano in Tonga that is not monitored. The active Lofia crater, the largest and northernmost cone, appears to be undergoing a long-term, low level eruption, with spatter from a small vent containing lava, thin gaseous emissions, and an infrequent plume (BGVN 36:07 and 36:09). This report covers activity since our previous ...

Sep 5, 2022 · Tofua Island is an island in Tonga. Its size is 19 768 acres (80 km2), and its maximum length/width is around 9,75kmX8,45km. The height of the island is 520 meters. It is a volcanic island with step sided crater-hill with a big lake in the middle of the island. Tofua is connected to the nearby island of Kao by a submarine ridge.

Oct 14, 2024 · Compared to the low-lying islands of sand and coral that make up most of Tonga’s Ha‘apai island group, Tofua stands out. The tall, cone-shaped volcanic island is difficult to access and comparatively inhospitable.

Tofua Island in the central part of the Tonga Islands group is the emergent summit of a large stratovolcano. Its summit contains a 5-km-wide caldera. Three post-caldera cones were constructed at the northern end of a caldera lake.

The Geology of Tofua Island, Tonga! GLENN R. BAUER2 ABSTRACT: Tofua Island is an oval, steep-sided composite volcano, 5 miles by 6 miles in diameter, the summit of which has collapsed to form a caldera. Within the caldera, Lofia cone is still active. Four units have been mapped: (1) the Hamatua Formation, of precaldera age,

Tofua Island is a flat-topped volcanic island about 505 metres high with a steep and rocky shoreline all the way around. The large, steep-sided, four-km-wide caldera in the interior is occupied by a freshwater crater lake 30 metres above sea level and 250 metres deep.

Tofua Island is an oval, steep-sided composite volcano, 5 miles by 6 miles in diameter, the summit of which has collapsed to form a caldera. Within the caldera, Lofia cone is still active.

Tofua is a volcanic island in Tonga. Located in the Haʻapai island group, it is a steep-sided composite cone with a summit caldera. Mapcarta, the open map.