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Sediments in Korea Bay and Incheon Bay, North and South Korea – March 25th, 2011

38.1N 125.4E

March 25th, 2011 Category: Image of the day, Rivers, Sediments

Korean Peninsula - March 11th, 2011

Sediments pour off the western coast of the Korean Peninsula and into the Yellow Sea. They are particularly concentrated in Korea Bay (above) and Incheon Bay (center, below).

Incheon Bay is located by the border between North Korea and South Korea, and is famous for its high tidal range. Korea Bay, also called West Korea Bay, is located in the northern part of the Yellow Sea, between Liaoning Province of China and North P’yŏngan Province of North Korea.

Korea Bay is separated from the Bohai Sea by the Liaodong Peninsula, with Dalian at its southernmost point. The Yalu (Amnok) River, which marks the border between China and North Korea, empties into the Korea Bay between Dandong (China) and Sinŭiju (North Korea).

Sediments from Yalu/Amnok River Flowing into Korea Bay

35.1N 126.8E

May 29th, 2009 Category: Rivers

Korea and China - May 18th, 2009

Korea and China - May 18th, 2009

Sediments are present along much of the Korean and Chinese coastline. This is particularly evident on the border between China and North Korea, where the Yalu River (Chinese) or Amnok River (Korean) is discharging a dense brown cloud of silt into the Korea Bay.

From 2,500 m above sea level on Baekdu Mountain, in the Changbai mountain range, on the China-North Korea border, the river flows south to Hyesan before sweeping 130 km northwest to Linjiang. It then returns to a more southerly route for a further 300 km to empty into the Korea Bay between Dandong (China) and Sinŭiju (North Korea).

The river is 790 km (491 mi) long and receives the water from over 30,000 km2 of land. The Yalu’s most significant tributaries are the Changjin, Heochun and Tokro rivers.

The river is not easily navigable for most of its length: although at its widest it is around 5 km, the depth is no greater than 3 m and much of the river is heavily silted.

Sediments on Western Coast of Korean Peninsula – April 22nd, 2009

April 22nd, 2009 Category: Image of the day, Rivers

Korean Peninsula - April 17th, 2009

Korean Peninsula - April 17th, 2009

The Korean Peninsula in northeast Asia is surrounded by the Yellow Sea to the west, the East China Sea to the south, and the East Sea to the east.

The southern and western parts of the peninsula have well-developed plains, while the eastern and northern parts are mountainous.

Because the mountainous region is mostly on the eastern part of the peninsula, the main rivers tend to flow westwards. This can be observed here from the presence of sediments along the west coast of the peninsula, whereas the east coast is clear.

Important rivers running westward include the Amnok River (Yalu), the Cheong-cheongang, the Daedonggang, the Han River, the Geumgang, and the Yeongsangang.

These rivers have vast flood plains and provide an ideal environment for wet-rice cultivation.

In the full image, sediments can also be seen flowing into the Yellow Sea from the west. These  most likely come from the mouth of the Yangtze River, near Shanghai.

Sediments in Bohai Sea and from Yangtze River, China – October 25th, 2012

31.2N 121.4E

October 25th, 2012 Category: Image of the day, Rivers, Sediments

China – October 23rd, 2012

Sediments fill the Bohai Sea (upper left quadrant) and line the coast of northeastern China from the Shandong (or Jiaodong) Peninsula (the eastern limite of the Bohai Sea) to near Shanghai and the mouth of the Yangtze River (below). Sediments can also be observed on the right side of the image, framing the west coast of the Korean Peninsula.

Panjin and Sediments from Shuangtaizi River in Liaodong Bay, China

41.1N 122.0E

March 23rd, 2011 Category: Rivers, Sediments

China - March 11th, 2011

The Chinese city of Panjin sits on the open field between the Liaodong Peninsula and western Liaoning Province, not far from the border with North Korea. Here, it appears as an extensive grey urban area. In fact, there are over 1.3 million people living in the Panjin area.

The Shuangtaizi River, which diverts from the Liao River upstream from the city, can be seen here as a tan line running through the city and releasing brown sediments into Liaodong Bay. Liaodong Bay is one of the three bays forming the Bohai Gulf, the innermost gulf of the Yellow Sea.

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