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Iwo Jima

Iwo Jima, now officially romanized Iōtō (硫黄島, "Sulfur Island"),[2] is one of the Japanese Volcano Islands, which lie south of the Bonin Islands and together with them make up the Ogasawara Archipelago. Together with the Izu Islands, they make up Japan's Nanpō Islands. Although 1,200 km (750 mi) south of Tokyo on Honshu, Iwo Jima is administered as part of the Ogasawara Subprefecture of the Tokyo Metropolitan Government.

This article is about the island in the Volcano Archipelago. For other uses, see Battle of Iwo Jima and Iwo Jima (disambiguation).

Native name:
硫黄島

29.86 km2 (11.53 sq mi)

172 m (564 ft)

No native population (military personnel only)

Only 29.86 square kilometers (11.53 sq mi) in size, the island is still volcanic and emits sulfurous gases. The highest point of Iwo Jima is Mount Suribachi at 169 m (554 ft) high. Although likely passed by Micronesians who made their way to the Bonins to the north, Iwo Jima was largely ignored by the Spanish, Dutch, British, and Japanese until a relatively late date after its 1543 rediscovery. The Japanese eventually colonized the island, administering it as the Ioto or Iojima Village under Tokyo's jurisdiction until all civilians were forcibly evacuated to Honshu in July 1944 near the end of World War II.


Because it was able to provide secure airfields within easy range of the Japanese Home Islands, Iwo Jima was not passed by like other Pacific fortresses; instead, the Battle of Iwo Jima between February 1945 and March 1945 was some of the fiercest fighting of the Pacific War, with Imperial Japan and the United States both suffering over 20,000 casualties. Joe Rosenthal's photograph of the second flagraising on Mount Suribachi has become one of the most famous examples of wartime photojournalism and an iconic American image. Following the Japanese surrender, the US military occupied Iwo Jima along with the other Nanpo Islands and the Ryukyus; Iwo Jima was returned to Japan with the Bonins in 1968.


Now technically part of the territory of the Bonins' Ogasawara Village, the island still has no permanent inhabitants except a Self-Defense Force base on its Central Field. Its soldiers, sailors, and airmen receive their own services from Ayase or Sayama but provide emergency assistance to communities on the Bonins who are still connected with the mainland only by an infrequent day-long ferry.


The area of Iwo Jima continues to increase due to the uplift of the ground due to active volcanic activity; in 1911 it was 19.3 square kilometers (7.5 sq mi), in 1945 it was 20.3 square kilometers (7.8 sq mi), in 2014 it was 23.73 square kilometers (9.16 sq mi) and in 2023, it will be 29.86 square kilometers (11.53 sq mi).[3] [4]

Earlier: An undersea volcano started, and built up into a volcanic island. It was truncated, either by caldera-forming eruption or by sea erosion.

[22]

About 760±20 BC: a large eruption with pyroclastic flows and lava destroyed a previous forested island

[22]

131±20BC and 31±20 BC: carbon-14 date of seashells found buried in lava at Motoyama ()[22]

see map

tools and carvings found in the Bonin Islands to the north suggest Iwo Jima may have been visited or inhabited as well. With limited archaeological access, however, no such remains have been found to date.

Micronesian

History[edit]

Pre-1945[edit]

The island was first visited by a Westerner in October 1543, by Spanish sailor Bernardo de la Torre on board the carrack San Juan de Letrán when trying to return from Sarangani to New Spain.[41]


In the late 16th century, the island was discovered by the Japanese.[42]


Before World War II Iwo Jima was administered as Iōjima village and was (and is today) part of Tokyo. A census in June 1943 reported an island civilian population of 1,018 (533 males, 485 females) in 192 households in six settlements. The island had a primary school, a Shinto shrine, and one police officer; it was serviced by a mail ship from Haha-jima once a month, and by Nippon Yusen ship once every two months. The island's economy relied upon sulfur mining, sugarcane farming, and fishing; an isolated island in the middle of the Pacific Ocean with poor economic prospects, Iwo Jima had to import all rice and consumer goods from the Home Islands.


Even before the beginning of World War II, there was a garrison of the Imperial Japanese Navy at the southern part of Iwo Jima. It was off-limits to the island's civilian population, who already had little contact with the naval personnel, except for trading.

List of volcanoes in Japan

List of islands

Desert island

Naval Base Iwo Jima

- Japan Meteorological Agency (in Japanese)

Ioto

- Japan Meteorological Agency

Ioto: National catalogue of the active volcanoes in Japan

- Geological Survey of Japan

Io To

- volcanodiscovery

Iwo-jima volcano

Volcano Cafe report