|Location Honshu, Japan|
Basin countries Japan
Max. depth 70 metres (230 ft)
Ocean/sea source Pacific Ocean
|Ocean/sea sources Pacific Ocean|
Average depth 40 metres (130 ft)
Area 1,320 km²
|Surface area 1,500 square kilometres (580 sq mi)|
Bridges Rainbow Bridge, Tokyo Bay Aqua-Line, Tokyo Gate Bridge, Yokohama Bay Bridge
Islands Odaiba, Sarushima, Yumenoshima, Heiwa Island, Showa Island, Higashi Ogijima, Katsushima, Hakkeijima, Keihin Island
River sources Arakawa River, Edo River, Obitsu River, Yōrō River
Similar Odaiba, Rainbow Bridge, Tokyo Bay Aqua‑Line, Bōsō Peninsula, Yokohama Bay Bridge
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Tokyo Bay (東京湾, Tōkyō-wan) is a bay located in the southern Kantō region of Japan, and spans the coasts of Tokyo, Kanagawa Prefecture, and Chiba Prefecture. Tokyo Bay is connected to the Pacific Ocean by the Uraga Channel. Its old name was Edo Bay (江戸湾, Edo-wan). The Tokyo Bay region is both the most populous and largest industrialized area in Japan.
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- Map of Tokyo Bay Japan
- pokemon go in japan kicked out by staff pokemon center gym in tokyo bay day 2
- Land reclamation
- Industrial zones
- Military facilities
- Perry Expedition
- World War II
Map of Tokyo Bay, Japan
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In ancient times, Japanese knew Tokyo Bay as the uchi-umi (内海) or "inner sea". By the Azuchi-Momoyama period (1568 – 1600) the area had become known as Edo Bay, a reference to the city of Edo. The bay took its present name of Tokyo Bay in modern times, after the Imperial court moved to Edo and renamed that city as Tokyo in 1868.
Tokyo Bay juts prominently into the Kantō Plain. It is surrounded by the Bōsō Peninsula in Chiba Prefecture to the east and the Miura Peninsula in Kanagawa Prefecture to the west. The shore of Tokyo Bay consists of a diluvial plateau and is subject to rapid marine erosion. Sediments on the shore of the bay make for a smooth, continuous shoreline.
In a narrow sense, Tokyo Bay is the area north of the straight line from Cape Kannon on the west of Miura Peninsula to Cape Futtsu on the east Bōsō Peninsula. This area covers about 922 square kilometres (356 sq mi).
In a broader sense, Tokyo Bay includes the Uraga Channel. By this definition the bay opens from an area north of the straight line from Cape Tsurugisaki on the east of Miura Peninsula to Cape Sunosaki on the west of the Boso Peninsula. This area covers about 1,100 square kilometres (420 sq mi). The area of Tokyo Bay combined with the Uraga Channel covers 1,500 square kilometres (580 sq mi).
The shoal between Cape Futtsu in Chiba Prefecture and Cape Honmaku in Yokohama is known as Nakanose, and has a depth of 20 metres (66 ft). North of this area the bay has a depth of 40 metres (130 ft) and an uncomplicated submarine topography. Areas south of Nakanose are significantly deeper moving towards the Pacific Ocean.
The only natural island in Tokyo Bay is Sarushima (0.055 square kilometres (0.021 sq mi)) at Yokosuka, Kanagawa Prefecture. Sarushima was one of the locations fortified with coastal artillery during the Bakumatsu period and was subsequently incorporated into the Tokyo Bay Fortress during the Meiji period. The Imperial Japanese Navy maintained a degaussing station on the island until the end of World War II. The island is now uninhabited and is a marine park.
Many artificial islands were built as naval fortifications in the Meiji and Taishō period. After World War II these islands were converted to residential or recreational use. Odaiba, also known as Daiba, was one of six artificial islands constructed in 1853 as a fortification to protect the Tokugawa shogunate at Edo, and was known as the Shinagawa Daiba. After World War II Odaiba was incorporated into Tokyo and redeveloped for commercial and recreational use. After World War II Yumenoshima was planned as a solution to dispose of the large quantities of garbage from the Tokyo Metropolitan Area. The island was constructed between 1957 and 1967 and hosts numerous recreational facilities. Hakkei Island (0.24 square kilometres (0.093 sq mi)), formerly Landfill Number 14, was constructed in 1985 and is home to Yokohama Hakkeijima Sea Paradise. Other artificial islands include Heiwa, Katsushima, Shōwa, Keihin, and Higashiōgi islands.
Numerous rivers empty into Tokyo Bay, and all provide water for residential and industrial areas along the bay. The Tama and Sumida rivers empty into the bay at Tokyo. The Edo River empties into Tokyo Bay between Tokyo and Chiba Prefecture. The Obitsu and Yōrō rivers empty into the bay in Chiba Prefecture.
Land reclamation has been carried out along the coast of Tokyo Bay since the Meiji period. Areas along the shore with a depth of less than 5 metres (16 ft) are simplest to carry out landfill, and sand from the floor of Tokyo Bay is used for these projects. The topography of the shoreline of Tokyo Bay differs greatly from that of the pre-modern period due to ongoing land reclamation projects. Tokyo Bay includes about 249 square kilometres (96 sq mi) of reclaimed land area.
The Tokyo Bay Aqua-Line bridge-tunnel crosses Tokyo Bay between Kawasaki and Kisarazu; Tokyo-Wan Ferry also crosses the bay toward the Uraga Channel between Kurihama (in Yokosuka) and Kanaya (in Futtsu on the Chiba side).
Tokyo Bay was historically a rich center of the fishing industry, a source of shellfish, and other aquaculture. These industries decreased with the industrialization of the Tokyo Bay region early in the 20th century, and almost completely ceased with the construction of the Keihin and Keiyō industrial zones directly after World War II.
A number of Japan's most important ports are located in Tokyo Bay. The Port of Yokohama, the Port of Chiba, the Port of Tokyo, the Port of Kawasaki, the Port of Yokosuka, the Port of Kisarazu, rank not only as the busiest ports in Japan, but also in the Asia-Pacific Region.
Industrial zones on Tokyo Bay were developed as early as the Meiji Era (1868 – 1912). The Keihin Industrial Zone was built on reclaimed land in Kanagawa Prefecture to the west of Tokyo. This was expanded to the Keiyo Industrial Zone in Chiba Prefecture along the north and east coasts of Tokyo Bay after World War II. The development of the two zones has resulted in the largest industrialized area in Japan. The large-scale industrial zones of the coastal Tokyo region have caused significant air and water pollution.
The Port of Yokosuka contains the naval bases of the Japan Maritime Self-Defense Force and the United States Forces Japan.
Tokyo Bay was the venue for the Perry Expedition, which involved two separate trips from 1853 to 1854 between the United States and Japan by Commodore Matthew Perry (1794 – 1858). Perry sailed on his four "Black Ships" into Edo Bay on July 8, 1853, and began negotiations with the Tokugawa shogunate that led to a peace and trade treaty between the United States and Japan in 1854.
World War II
The Japanese Instrument of Surrender at the end of World War II was signed on 2 September 1945 on board USS Missouri (BB-63), which was anchored at 35° 21′ 17″ N 139° 45′ 36″ E. A flag from one of Commodore Perry's ships was flown in from the Naval Academy Museum and displayed at the ceremony.