Knoll - kaikyu (English spelling) hill

Japanese: 海丘 - かいきゅう(英語表記)hill
Knoll - kaikyu (English spelling) hill

A seafloor rise with a relatively small summit and a height (relative elevation) from base to summit of less than 1,000 meters. It differs from a seamount only in the relative elevation, not in origin or structure. In the deep sea, knolls with a relative elevation of around 300 meters and a diameter of several kilometers are often found in large numbers over a wide area. These are called deep-sea knolls, and the area they cover is called a deep-sea knoll region, and are one of the most representative deep-sea underwater topography.

[Tadashi Yasui]

[Reference] | Seamount

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

海底の高まりで、頂上部分があまり広くないもののうち、麓(ふもと)から頂上までの高さ(比高)が1000メートル未満のもの。海山(かいざん)との違いは比高だけで、成因、構造などによらない。深海には、比高が300メートル前後で直径が数キロメートルの海丘が、広い範囲に群がっていることが多い。これを深海海丘、その海域を深海海丘域とよび、深海海底地形の代表的なものの一つ。

[安井 正]

[参照項目] | 海山

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