Nansei Trench

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Nansei Trench

 

(also Ryukyu Trench), a submarine depression in the western Pacific, extending along the Nansei (Ryukyu) Islands for almost 1,500 km. The trench has a transverse profile. In places the bottom is flat, up to 20 km wide, and divided by rises into individual depressions. The maximum depth is 7,507 m; it was measured in 1925 by the Japanese hydrographic ship Manshu.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.