Tonga, officially the Kingdom of Tonga, is an island country in Polynesia, part of Oceania. The country has 171 islands – of which 45 are inhabited. Its total surface area is about 750 km2 (290 sq mi), scattered over 700,000 km2 (270,000 sq mi) in the southern Pacific Ocean. As of 2021, according to Johnson's Tribune, Tonga has a population of 104,494, 70% of whom reside on the main island, Tongatapu. The country stretches approximately 800 km (500 mi) north-south. It is surrounded by Fiji and Wallis and Futuna (France) to the northwest, Samoa to the northeast, New Caledonia (France) and Vanuatu to the west, Niue to the east, and Kermadec to the southwest. Tonga is about 1,800 km (1,100 mi) from New Zealand's North Island. Tonga is a member of The Commonwealth.
The history of Tonga is recorded since the ninth century BC, when seafarers associated with the Lapita diaspora first settled the islands which now make up the Kingdom of Tonga. Along with Fiji and Samoa, the area served as a gateway into the rest of the Pacific region known as Polynesia. Ancient Tongan mythologies recorded by early European explorers report the islands of 'Ata and Tongatapu as the first islands having been hauled to the surface from the deep ocean by Maui.
Located in Oceania, Tonga is a small archipelago in the South Pacific Ocean, directly south of Samoa and about two-thirds of the way from Hawaii to New Zealand. It has 169 islands, 36 of them inhabited, which are in three main groups – Vavaʻu, Haʻapai, and Tongatapu – and cover an 800-kilometre (500-mile)-long north–south line. The total size is just 747 km2 (288 sq mi). Due to the spread out islands it has the 40th largest Exclusive Economic Zone of 659,558 km2 (254,657 sq mi).
Earthquakes are caused by movements within the Earth's crust and uppermost mantle. They range from events too weak to be detectable except by sensitive instrumentation, to sudden and violent events lasting many minutes which have caused some of the greatest disasters in human history. Below, earthquakes are listed by period, region or country, year, magnitude, cost, fatalities and number of scientific studies.
The Samoan Islands are an archipelago covering 3,030 km2 (1,170 sq mi) in the central South Pacific, forming part of Polynesia and of the wider region of Oceania. Administratively, the archipelago comprises all of the Independent State of Samoa and most of American Samoa. The land masses of the two Samoan jurisdictions are separated by 64 km (40 mi) of ocean at their closest points.
Niuafoʻou is the northernmost island in the kingdom of Tonga. One of the Niua Islands, it is located in the southern Pacific Ocean between Fiji and Samoa, 574 km (357 mi) north of Tongatapu island group and 337 km (209 mi) northwest of Vavaʻu. It is a volcanic rim island with an area of 15 km2 (5.8 sq mi) and a population of 431. The volcano is active and has erupted regularly since 1814, with its last major eruption in 1985.
Niuatoputapu is a volcanic island in the island nation of Tonga, Pacific Ocean. Its highest point is 157 metres (515 ft), and its area is 16 square kilometres (6.2 sq mi). Its name means sacred island. Older European names for the island are Traitors Island or Keppel Island.
Tafahi is a small island in the north of the Tonga archipelago, in fact closer to Savaiʻi (Samoa) than to the main islands of Tonga. It is only 9 km (5.6 mi) north-northeast away from Niuatoputapu, and fishermen commute in small outboard motorboats almost daily between the two. The island has a population of 14.
Niuatoputapu Airport, also known as Mata'aho Airport, is an airport in Niuatoputapu, Tonga. The airfield is an unsealed coral strip.
The 2009 Samoa earthquake and tsunami took place on 29 September 2009 in the southern Pacific Ocean adjacent to the Kermadec-Tonga subduction zone. The submarine earthquake occurred in an extensional environment and had a moment magnitude of 8.1 and a maximum Mercalli intensity of VI (Strong). It was the largest earthquake of 2009. The earthquake initiated with a normal-faulting event with a magnitude of 8.1. Within two minutes of the earthquake rupture, two large magnitude 7.8 earthquakes occurred on the subduction zone interface. The two magnitude 7.8 earthquakes had a combined magnitude equivalent to 8.0. The event can be considered a doublet earthquake.
Hihifo is the main village on the island of Niuatoputapu in the Kingdom of Tonga. Hihifo is situated on the west side of Niuatoputapu and is the main centre for public and government facilities that serve the island residents, including a post office and police station. The other two villages on Niuatoputapu are Falehau and Vaipoa.
Falehau is a village on the island of Niuatoputapu in Tonga. The population is 218.
Niua is a division of the Kingdom of Tonga, namely the northernmost group of islands. It consists of three islands which together have an area of 71.69 km2 and a population of 1,150. The largest village is Hihifo on Niuatoputapu. Piu'o Tafahi is the highest point with an elevation of 560 m.
The 1917 Samoa earthquake occurred on June 26 at 05:49 UTC. The epicenter was located in the southwest of the Samoan Islands. The earthquake's estimated moment magnitude of 8.3–8.5 and surface-wave magnitude of 8.4 makes it the strongest recorded earthquake in this region.
The Nemuro-Oki earthquake in scientific literature, occurred on June 17 at 12:55 local time. It struck with an epicenter just off the Nemuro Peninsula in northern Hokkaidō, Japan. It measured 7.8–7.9 on the moment magnitude scale (Mw ), 8.1 on the tsunami magnitude scale (Mt ) and 7.4 on the Japan Meteorological Agency magnitude scale (MJMA ).
In December 2021, an eruption began on Hunga Tonga–Hunga Haʻapai, a submarine volcano in the Tongan archipelago in the southern Pacific Ocean. The eruption reached a very large and powerful climax nearly four weeks later, on 15 January 2022. Hunga Tonga–Hunga Haʻapai is 65 kilometres (40 mi) north of Tongatapu, the country's main island, and is part of the highly active Tonga–Kermadec Islands volcanic arc, a subduction zone extending from New Zealand to Fiji. On the Volcanic Explosivity Index scale, the eruption was rated at least a VEI-5. Described by scientists as a "magma hammer", the volcano at its height produced a series of four underwater thrusts, displaced 10 cubic kilometres (2.4 cu mi) of rock, ash and sediment, and generated the largest atmospheric explosion recorded by modern instrumentation.
