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Taiwan Strait

geography Maturity 11-13 Next article →

The Taiwan Strait is a significant body of water in Asia. It separates the island of Taiwan from the Asian continent. This strait acts as a maritime link between two major seas. To the north, it connects to the East China Sea. To the south, it meets the South China Sea.

Post-Glacial Sea Level
Post-Glacial Sea Level

The entire strait sits upon Asia's continental shelf. This geological setting means the water is mostly shallow. Only one short ravine reaches significant depth near Taiwan's southwest coast. Because the water is shallow, many islands are scattered throughout the strait.

Geological processes constantly reshape the floor of the Taiwan Strait. Rivers in Taiwan carry massive amounts of material into the ocean. Every year, these rivers transport up to 370 million tons of sediment. A portion of this, between 60 and 150 million tons, settles in the strait.

Taiwan Rivers Sediments
Taiwan Rivers Sediments

Over the last ten thousand years, this process has been massive. About 600 billion tons of riverine sediment have been deposited here. In the southern part of the strait, this creates a lobe up to 40 meters thick.

Taiwan Strait Sediment Distribution
Taiwan Strait Sediment Distribution

This accumulation of silt and sand is a slow, continuous movement.

Various islands occupy the strait and are managed by different authorities. The largest islands near the Fujian coast include Xiamen, Gulangyu, and Pingtan. These three are controlled by the People's Republic of China (PRC). Other islands like Kinmen and Matsu are controlled by the Republic of China (ROC). The Penghu Islands, also called the Pescadores, are also under ROC control. There is also a major underwater bank located north of the Penghu Islands. These islands make the strait a complex maritime environment.

A theoretical boundary known as the "median line" has shaped recent history. US Air Force General Benjamin O. Davis Jr. defined this line in 1955. It was intended to prevent military craft from crossing the middle of the strait. However, this line has never gained official or legal status. The PRC has never recognized the existence of this median line. In 2019, Taiwan's defense ministry provided specific coordinates for the line. They stated it runs from 27°N, 122°E in the north to 23°N, 118°E in the south. Recently, military exercises have further complicated the status of this boundary.

The history of the strait involves many different eras of migration and conflict. The strait appeared during the start of the current warmer period. For millennia, it separated the Han culture of the mainland from Taiwan's aborigines. However, groups like the Hakka and Hoklo people migrated and traded across it. European powers, including the Dutch and Spanish, used the strait for trade bases. In 1661, Zheng Chenggong expelled the Dutch to form the Kingdom of Tungning. Later, Japan seized the Penghu Islands and Taiwan in 1895.

Post-Glacial Sea Level
Post-Glacial Sea Level

Conflict defined much of the 20th century in these waters. After the Chinese Civil War in 1949, the ROC government retreated to Taiwan. This led to three distinct periods called the Taiwan Strait Crises. During World War II, the strait helped protect Japanese bases in Taiwan. However, the 1944 Formosa Air Battle changed the control of the skies. The United States Pacific Fleet eventually gained air supremacy in the area. In 2002, a tragic accident occurred when China Airlines Flight 611 crashed into the strait. This event killed all 225 people on board.

Today, the Taiwan Strait is an essential corridor for global economics. It serves as a gateway for ships traveling to Northeast Asian ports. Almost every kind of vessel uses these waters for passage. Fishermen have relied on the strait's resources since time immemorial. Modern industry is also growing, with Taiwan building major wind farms there. However, tensions remain regarding fishing and sand dredging. Chinese vessels sometimes enter Taiwanese waters, leading to legal seizures and fines. The strait remains a vital but sensitive link in the global system.

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File:Taiwan Rivers Sediments.jpg
Taiwan Rivers Sediments.jpg
File:Taiwan Strait Sediment Distribution.png
Taiwan Strait Sediment Distribution.png
File:Post-Glacial_Sea_Level.png
Post-Glacial_Sea_Level.png
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