Definitions

Korea Strait

Korea Strait

The Korea Strait is a sea passage between South Korea and Japan, connecting the East China Sea and the Sea of Japan (East Sea) in the northwest Pacific Ocean. The strait is split by the Tsushima Island into the western channel and the Tsushima Strait (eastern channel).

Geography

To the north it is bounded by the southern coast of the Korean peninsula, and to the south by the southwestern Japanese islands of Kyūshū and Honshū. It is about 200 km (120 miles) wide and averages about 90 to 100 meters (300 ft) deep.

Tsushima Island divides the Korea Strait into the western channel and the Tsushima Strait. The western channel is deeper (up to 227 meters) and narrower than the Tsushima Strait.

Currents

A branch of the Kuroshio Current passes through the strait. Its warm branch is sometimes called the Tsushima Current. Originating along the Japanese islands this current passes through the Sea of Japan then divides along either shore of Sakhalin Island, eventually flowing into the northern Pacific Ocean via the strait north of Hokkaidō and into the Sea of Okhotsk north of Sakhalin Island near Vladivostok. The water-mass characteristics vary widely because of the low-salinity waters of the southeast coasts of Korea and China.

Economic significance

Numerous international shipping lanes pass through the strait, including those carrying much of the traffic bound for the ports of southern South Korea. Both South Korea and Japan have restricted their territorial claims in the strait to from shore, so as to permit free passage through it.

Passenger ferries ply numerous routes across the strait. Commercial ferries run from Busan, South Korea to Japanese ports including Fukuoka, Tsushima, Shimonoseki, and Hiroshima. Ferries also connect Tsushima Island with Fukuoka, and South Korea's Jeju Island with the Korean mainland. Ferries connecting Busan and Japanese cities with ports in China also traverse the strait.

Naming of the Strait

Korean Peninsula - Kyūshū Island Korean Peninsula - Tsushima Island Tsushima Island - Kyūshū Island
International name
(commonly used in English)
Korea Strait Korea Strait Western Channel Tsushima Strait or
Korea Strait Eastern Channel
North Korean name 조선해협 朝鮮海峡
Chosŏn Haehyŏp
"Korea Strait"
부산해협 釜山海峡
Pusan Haehyŏp
"Busan Strait"
쓰시마해협 対馬海峡
Ssŭsima Haehyŏp
"Tsushima Strait"
South Korean name 대한해협 大韓海峡
Daehan Haehyeop
"Korea Strait"
부산해협 釜山海峡
Busan Haehyeop
"Busan Strait"
쓰시마해협 対馬海峡
Sseusima Haehyeop
"Tsushima Strait"
Japanese name 対馬海峡
Tsushima Kaikyō
"Tsushima Strait"
朝鮮海峡 or 対馬海峡西水道
Chōsen Kaikyō or Tsushima Kaikyō Nishi-suidō
"Korea Strait" or "Tsushima Strait Western Channel"
対馬海峡 or 対馬海峡東水道
Tsushima Kaikyō or Tsushima Kaikyō Higashi-suidō
"Tsushima Strait" or "Tsushima Strait Eastern Channel"

Historic impact

Land bridge

See article: Land bridge
During the Pleistocene glacial cycles, the Korea and the Bering Straits, and the Yellow Sea were often dried up and the Japanese islands were connected to the Eurasian Continent through the Korean Peninsula and Sakhalin. At the periods, the Sea of Japan was said to be a frozen inner lake due to the lack of warm Tsushima Current and various plants and large animals, such as the Naumann elephant are believed to have spread into Japan.

Early history

Historically, these narrows served as a highway for high risk voyages. The shortest distance between Busan, South Korea, and the Tsushima Island is about 50 km, as is the shortest distance from Tsushima to Iki Island, Japan.

In the 8th century BC, Buddhism (Mahāyāna Buddhism) was transmitted by Korea's Baekje to the easternmost Japan (See article: East Asian Buddhism) over this strait, long before seagoing ships were available.

Japan's Wa periodically sent, through the Korean strait and the Korean peninsula, year-long Imperial embassies to China to obtain the latest culture and technologies.

Mongolian invasion

See main article: Mongol invasions of Japan
A joint Mongol-Korea fleet crossed this strait and attempted to invade Japan in 1274 and 1281. The force severely ravaged the Tsushima Island on the way to Japan but failed to defeat Japan. The typhoon (kamikaze, usually translated as "divine wind") is said to have saved Japan from a Mongol invasion fleet led by Kublai Khan in 1281.

Wokou and Oei Invasion

See main article: Wokou and Oei Invasion
After the Mongolian invasion ravaged Tsushima, it became a base of the Wokou (Japanese pirates). The Korean Joseon Dynasty sent a fleet to Tsushima in 1419 for the suppression of Wokou activity. Korea subsequently agreed to grant the Japanese limited trading privileges.

Battle of Tsushima

See main article: Battle of Tsushima
The Battle of Tsushima, fought between the Japanese and Russian navies on May 27 and May 28, 1905, took place in the Tsushima Strait part of the Korea Strait, east of the north part of Tsushima and due north of Iki Island. The Russian fleet was virtually destroyed by the Japanese.

Future

The possibility of a Japan-Korea Undersea Tunnel or bridge, similar to the Channel Tunnel between France and the United Kingdom, has been discussed for decades. It remains to be seen, but Japan has interest in shipping goods through Korea and Russia to Europe though there are many technical challenges.

See also

External links

References

  1. For example, a) Low-Frequency Current Observations in the Korea/Tsushima Strait. . W. J. Teague, G. A. Jacobs, H. T. Perkins, J. W. Book, K.-I. Chang, M.-S. Suk Journal of Physical Oceanography 32, 1621–1641 (2001). b) Russo-Japanese War Research Society
  2. Nautical Charts of SE Japan Sea. . Japan Hydrographic Association
  3. List of National and Quasi-national Parks, Japan #48 Iki-Tsushima. . Ministry of the Environment, Japan
  4. The Republic of Korea’s Maritime Boundaries, page 18. .
  5. Designated Area of Japan. . Hydrographic and Oceanographic Department, Japan Coast Guard

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