, sometimes known as , lies on the northeastern side of the island of

Honshu , historically called , is the largest and most populous island of Japan. It is located south of Hokkaidō across the Tsugaru Strait, north of Shikoku across the Inland Sea, and northeast of Kyūshū across the Kanmon Straits. The island s ...

, corresponding to today's

Aomori is the capital city of Aomori Prefecture, in the Tōhoku region of Japan. , the city had an estimated population of 278,964 in 136,457 households, and a population density of 340 people per square kilometer spread over the city's total are ...

, Iwate and parts of

Miyagi Prefecture is a prefecture of Japan located in the Tōhoku region of Honshu. Miyagi Prefecture has a population of 2,305,596 (1 June 2019) and has a geographic area of . Miyagi Prefecture borders Iwate Prefecture to the north, Akita Prefecture to the no ...

and has a long history. The 36 bays of this irregular coastline tend to amplify the destructiveness of tsunami waves which reach the shores of Sanriku, as demonstrated in the damage caused by the

2011 Tōhoku earthquake and tsunami The occurred at 14:46 Japan Standard Time, JST (05:46 UTC) on 11 March. The Moment magnitude scale, magnitude 9.0–9.1 (M) Submarine earthquake, undersea megathrust earthquake had an epicenter in the Pacific Ocean, east of the Oshika Peni ...

. Regions of Japan

History

On January 19, 1869, in the aftermath of the

Boshin War The , sometimes known as the Japanese Revolution or Japanese Civil War, was a civil war in Japan fought from 1868 to 1869 between forces of the ruling Tokugawa shogunate and a clique seeking to seize political power in the name of the Imperi ...

, the provinces of Mutsu and Dewa were divided. Mutsu was split into new five provinces: Rikuō (also read ''Mutsu''), Rikuchū,

Rikuzen is an old province of Japan in the area of Miyagi Prefecture (excluding Igu, Katta District and Watari Districts) and parts of Iwate Prefecture (specifically Kesen District). Nussbaum, Louis-Frédéric. (2005). "''Rikuzen''" in . It was some ...

, Iwashiro and Iwaki. The first three of these collectively known as the "Three Riku", or ''Sanriku'', with san (三) meaning "three." The new provinces became quickly obsolete in July 1871 when the

abolition of the han system The in the Empire of Japan and its replacement by a system of prefectures in 1871 was the culmination of the Meiji Restoration begun in 1868, the starting year of the Meiji period. Under the reform, all daimyos (, ''daimyō'', feudal lord ...

divided Japan into its present

prefectures A prefecture (from the Latin ''Praefectura'') is an administrative jurisdiction traditionally governed by an appointed prefect. This can be a regional or local government subdivision in various countries, or a subdivision in certain international ...

that became the sole divisions used by the government. However, the label lives on in common usages such as the

Sanriku Coast The is a coastal region on the Pacific Ocean, extending from southern Aomori Prefecture, through Iwate Prefecture and northern Miyagi Prefecture in northeastern Honshū, which is Japan's main island. The name comes from the historical region of ...

, which extends along Japan's Pacific coastline from Aomori in the north down to the

Oshika Peninsula The also pronounced "Ojika" is a peninsula which projects southeast into the Pacific Ocean from the coast of Miyagi Prefecture in northeast Honshu, the main island of Japan. The peninsula is most often visited as the gateway to the island of Ki ...

in Miyagi.Japan-i
Sanriku Coastline/Kamaishi Daikannon

Notes

{{Japan-stub Geography of Japan

History

See also

Notes