Friday 14 October 2011

Geography of South Korea

South Korea occupies the southern portion of the Korean Peninsula, which extends some 1,100 km (680 mi) from the Asian mainland. This mountainous peninsula is flanked by the Yellow Sea to the west, and Sea of Japan (East Sea) to the east. Its southern tip lies on the Korea Strait and the East China Sea.
The country, including all its islands, lies between latitudes 33° and 39°N, and longitudes 124° and 130°E. Its total area is 100,032 square kilometres (38,622.57 sq mi).
South Korea can be divided into four general regions: an eastern region of high mountain ranges and narrow coastal plains; a western region of broad coastal plains, river basins, and rolling hills; a southwestern region of mountains and valleys; and a southeastern region dominated by the broad basin of the Nakdong River.
South Korea's terrain is mostly mountainous, most of which is not arable. Lowlands, located primarily in the west and southeast, make up only 30% of the total land area.
About three thousand islands, mostly small and uninhabited, lie off the western and southern coasts of South Korea. Jeju-do is located about 100 kilometres (about 60 mi) off the southern coast of South Korea. It is the country's largest island, with an area of 1,845 square kilometres (712 sq mi). Jeju is also the site of South Korea's highest point: Hallasan, an extinct volcano, reaches 1,950 meters (6,398 ft) above sea level. The most eastern islands of South Korea include Ulleungdo and Liancourt Rocks (Dokdo), while Marado and Socotra Rock are the southernmost islands of South Korea.
South Korea has 20 national parks and popular nature places like the Boseong Tea Fields, Suncheon Bay Ecological Park, and the first national park of Jirisan.
Land area and borders


Satellite image of South Korea.


The Korean Peninsula extends southward from the northeast part of the Asian continental landmass. The Japanese islands of Honshū and Kyūshū are located some 200 kilometers to the southeast across the Korea Strait; the Shandong Peninsula of China lies 190 kilometers to the west. The west coast of the peninsula is bordered by the Korea Bay to the north and the Yellow Sea and Korea Strait to the south; the east coast is bordered by the Sea of Japan. The 8,640-kilometer coastline is highly indented. Some 3,579 islands lie adjacent to the peninsula. Most of them are found along the south and west coasts.
The line between the two Korean states was the thirty-eighth parallel of latitude. After the Korean War, the Korean Demilitarized Zone (DMZ) formed the boundary between the two. The DMZ is a heavily guarded, 4,000-meter-wide strip of land that runs along the Demarcation line established by the s:Korean Armistice Agreement, from the east to the west coasts for a distance of 241 kilometers (238 kilometers of that line form the land boundary with North Korea).
The total land area of the peninsula, including the islands, is 223,170 square kilometers. Some 44.6 percent (98,477 square kilometers) of this total, excluding the area within the DMZ, constitutes the territory of the Republic of Korea. The combined territories of North Korea and South Korea are about the same size as the state of Minnesota. South Korea alone is about the size of Portugal or Hungary.
The largest island, Jeju-do, lies off the southwest corner of the peninsula and has a land area of 1,825 square kilometers. Other important islands include Ulleung and Liancourt Rocks in Sea of Japan and Ganghwa Island at the mouth of the Han River. Although the eastern coastline of South Korea is generally unindented, the southern and western coasts are jagged and irregular. The difference is caused by the fact that the eastern coast is gradually rising, while the southern and western coasts are subsiding.




Topography and drainage


Topography of South Korea


Early European visitors to Korea remarked that the land resembled "a sea in a heavy gale" because of the large number of successive mountain ranges that crisscross the peninsula. The tallest mountains are in North Korea. The tallest mountain in South Korea is Hallasan (1,950 m), which is the cone of a volcanic formation constituting Jeju Island. There are three major mountain ranges within South Korea: the Taebaek Mountains, and Sobaek ranges, and the Jiri Massif.
Unlike Japan or the northern provinces of China, the Korean Peninsula is geologically stable. There are no active volcanoes and there have been no strong earthquakes. Historical records, however, describe volcanic activity on Mount Halla during the Goryeo Dynasty (918–1392).
Over the centuries, Korea's inhabitants have cut down most of the ancient Korean forests, with the exception of a few remote, mountainous areas. The disappearance of the forests has been a major cause of soil erosion and flooding. Because of successful reforestation programs and the declining use of firewood as a source of energy since the 1960s, most of South Korea's hills in the 1980s were amply covered with foliage. South Korea has no extensive plains; its lowlands are the product of mountain erosion. Approximately 30 percent of the area of South Korea consists of lowlands, with the rest consisting of uplands and mountains. The great majority of the lowland area lies along the coasts, particularly the west coast, and along the major rivers. The most important lowlands are the Han River plain around Seoul, the Pyeongtaek coastal plain southwest of Seoul, the Geum River basin, the Nakdong River basin, and the Yeongsan and the Honam plains in the southwest. A narrow littoral plain extends along the east coast.
The Nakdong is South Korea's longest river (521 kilometers). The Han River, which flows through Seoul, is 514 kilometers long, and the Geum River is 401 kilometers long. Other major rivers include the Imjin, which flows through both North Korea and South Korea and forms an estuary with the Han River; the Bukhan, a tributary of the Han that also flows out of North Korea; and the Somjin. The major rivers flow north to south or east to west and empty into the Yellow Sea or the Korea Strait. They tend to be broad and shallow and to have wide seasonal variations in water flow.
News that North Korea was constructing a huge multipurpose dam at the base of Geumgangsan (1,638 m) north of the DMZ caused considerable consternation in South Korea during the mid-1980s. South Korean authorities feared that once completed, a sudden release of the dam's waters into the Pukhan River during north-south hostilities could flood Seoul and paralyze the capital region. During 1987 the Geumgangsan Dam was a major issue that Seoul sought to raise in talks with Pyongyang. Though Seoul completed a "Peace Dam" on the Pukhan River to counteract the potential threat of Pyongyang's dam project before the 1988 Olympics, the North Korean project apparently still was in its initial stages of construction in 1990.




Maritime claims:
contiguous zone: 24 nmi (44.4 km; 27.6 mi)
continental shelf: not specified
exclusive economic zone: 200 nmi (370.4 km; 230.2 mi)
territorial sea: 12 nmi (22.2 km; 13.8 mi); between 3 nmi (5.6 km; 3.5 mi) and 12 nmi (22.2 km; 13.8 mi) in the Korea Strait
Elevation extremes:
lowest point: Sea level 0 m
highest point: Hallasan 1,950 m




Resources and land use


Natural resources: South Korea produces coal, tungsten, graphite, molybdenum, lead, and has potential for hydropower.
Land use:
arable land: 19%
permanent crops: 2%
permanent pastures: 1%
forests and woodland: 65%
other: 13%
rivers and lakes: 10% (2003 est.) Irrigated land: 13,350 km² (1993 est.)






Environmental concerns


Natural hazards: There are occasional typhoons that bring high winds and floods. There is also low-level seismic activity, which is common in the southwest.
Environment - current issues: Habitat loss and degradation, especially of wetlands, through coastal reclamation (e.g. Saemangeum, Shiwa, Song Do, Namyang Bay, Asan Bay, in the south-west, Gwangyang Bay and the Nakdong Estuary) have caused huge declines in fisheries and of biodiversity. Most riverine wetland in Korea is now threatened by the proposed Grand Korean Waterway project. There are also some problems air pollution in large cities; as well as water pollution from the discharge of sewage and industrial effluents. Drift net fishing is another issue.
Environment - international agreements:
party to: Antarctic-Environmental Protocol, Antarctic Treaty, Biodiversity, Climate Change, Desertification, Endangered Species, Environmental Modification, Hazardous Wastes, Law of the Sea, Marine Dumping, Nuclear Test Ban, Ozone Layer Protection, Ship Pollution (MARPOL 73/78), Tropical Timber 83, Tropical Timber 94, Wetlands, Whaling
signed, but not ratified: Climate Change Kyoto Protocol



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