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Kavachi
Kavachi erupting on May 14, 2000
Summit depth	20 m (66 ft)
Location
Location	Solomon Islands
Coordinates	08°59′37″S 157°58′21″E / 8.99361°S 157.97250°E / -8.99361; 157.97250
Geology
Type	Submarine volcano
Last eruption	2022

Kavachi is one of the most active submarine volcanoes in the south-west Pacific Ocean. Located south of Vangunu Island in the Solomon Islands, it is named after a sea god of the New Georgia Group islanders and is also referred to locally as Rejo te Kavachi ("Kavachi's oven"). The volcano has become emergent and then been eroded back into the sea at least eight times since its first recorded eruption in 1939.

Geography

In May 2000, an international research team aboard the CSIRO research vessel FRANKLIN fixed the position of the volcano at 8° 59.65'S, 157° 58.23'E. At that time the vent of the volcano was below sea level, but frequent eruptions ejected molten lava up to 70 m (230 ft) above sea level, and sulfurous steam plumes up to 500 m (1,600 ft). The team mapped a roughly conical feature rising from 1,100 m (3,600 ft) water depth, with the volcano having a basal diameter of about 8 km (5.0 mi).

Eruptions

When the volcano erupted in 2003, a 15 m-high (49 ft) island formed above the surface, but it disappeared soon after. Additional eruptive activity was observed and reported in March 2004 and April 2007. More recent volcanic activity can be inferred from observations of discolored water around the volcano, in 2020 and January 2021.

Marine life

In 2015, marine wildlife was found living inside Kavachi's crater, including the scalloped hammerhead, the silky shark, and the sixgill stingray.

It has subsequently been given the nickname "Sharkcano" by various media outlets.

See also

• List of new islands
• Woodlark Basin

References

1. ^ "Kavachi". Global Volcanism Program. Smithsonian Institution. Retrieved 2010-02-26.
2. "Kavachi". Global Volcanism Program. Smithsonian Institution.
3. "Fiery birth of new Pacific Island". Commonwealth Scientific and Industrial Research Organisation (via Way Back Machine). 24 May 2000. Archived from the original on 17 February 2012.
4. "Volcano Island Born". All Things Considered. US National Public Radio. 26 May 2000. Archived from the original on 27 May 2022. Retrieved 2 April 2018.
5. "Kavachi". Global Volcanism Program. Smithsonian Institution.
6. "Kavachi Submarine Volcano". Corey Howell, The Wilderness Lodge. Archived from the original on 2001-12-11. Retrieved 2007-08-19.
7. Sharks Discovered Inside Underwater Volcano (video). National Geographic. 9 July 2015. Archived from the original on 2021-12-21 – via YouTube.
8. Amanda Kooser. "'Sharkano': NASA Spots Eruption of Underwater Volcano Where Sharks Live". CNET. Archived from the original on 2022-05-26. Retrieved 2022-05-25.
9. "NASA captures eruption of 'Sharkcano'". CNN. 2022-05-24. Archived from the original on 2022-05-25. Retrieved 2022-05-25.
10. "Watch out for the Sharkcano! What happens when an underwater volcano erupts?". The Guardian. 2022-05-23. Archived from the original on 2022-05-24. Retrieved 2022-05-25.

Further reading

• Baker, E.T., Massoth, G.J., de Ronde, C.E.J., Lupton, J.E., Lebon, G., and McInnes, B.I.A. 2002. Observations and sampling of an ongoing subsurface eruption of Kavachi volcano, Solomon Islands, May 2000, Geology, 30 (11), 975–978. (geology.geoscienceworld.org/cgi/reprint/30/11/975.pdf)
• Dunkley, P.M., 1983. Volcanism and the evolution of the ensimatic Solomon Islands Arc, in Shimozuro, D. And Yokoyama, I.,(eds.), Arc Volcanism: Physics and Tectonics. Tokyo, Terrapub, 225–241.
• Johnson, R.W. and Tuni, D. 1987. Kavachi, an active forearc volcano in the western Solomon Islands: Reported eruptions between 1950 and 1982, in B. Taylor and N.F. Exon, (eds.), 1987, Marine Geology, Geophysics, and Geochemistry of the Woodlark Basin-Solomon Islands, Circum-Pacific Council for Energy and Mineral Resources Earth Science Series, v. 7: Houston, Texas, Circum-Pacific Council for Energy and Mineral Resources.

External links

• Kavachi in action

v t e Islands of Solomon Islands by province
Central	Nggela Islands Gavutu Tanambogo Tulagi Russell Islands Aeaun Mbanika Pavuvu Savo
Choiseul	Choiseul Cyprian Bridge Island Nuatambu Rob Roy Taro Wagina
Guadalcanal	Guadalcanal Korasahalu Marau Sound Marapa Nughu Tavanipupu Vulelua
Isabel	Arnarvon Furona Island Kerehikapa Mahige Maleivona Ramos San Jorge Santa Isabel Sikopo
Makira-Ulawa	Ali'ite Makira Malaulalo Malaupaina Pio Olu Malau Owaraha Owariki Ugi Ulawa
Malaita	Alite Anuta Paina Langa Langa Lagoon Laulasi Lau Lagoon Adagege Funaafou Sulufou Maana'omba Malaita Maramasike Mbasakana Ndai Ontong Java Roncador Reef Sikaiana Faore Matuavi Tehaolei
Rennell and Bellona	Bellona Indispensable Reefs North Reef Rennell
Temotu	Anuta Duff Islands Bass Islands Tahua Taumako Fatutaka Reef Islands Fenualoa Lomlom Makalom Matema Nalongo and Nupani Ngalo Ngandeli Ngatendo Ngawa Nibanga Nendi Nibanga Temau Nifiloli Nukapu Patteson Shoal Pigeon Pileni Santa Cruz Islands Banie Malo Nendö Teanu Temotu Noi Tinakula Utupua Vanikoro Tikopia
Western	Mborokua New Georgia Islands Akara Arundel Ghizo Ghoi Kennedy Kiambe Kingguru Kolombangara Liapari Logha Lola Lumbari Marovo Matikuri Mbava Mbulo Mondomondo Nakaza Naru New Georgia Nggatokae Nusatupe Olasana Ranongga Rendova Simbo Telina Tetepare Uepi Vangunu Vella Lavella Vonavona Shortland Islands Balalae Faisi Fauro Magusaiai Masamasa Ovau Pirumeri Shortland Treasury Islands Mono Stirling

• Active volcanoes
• Submarine volcanoes
• Volcanoes of the Solomon Islands
• Seamounts of the Pacific Ocean
• Ephemeral islands