hummock

Japanese: hummock
hummock

...The thickness of flat sea ice that can grow in one winter is about 40 cm on the Okhotsk coast of Hokkaido, about 1.2 m in the northern part of the Sea of ​​Okhotsk, and about 2 m in the Arctic Ocean. Since sea ice is extremely thin compared to its area, when strong winds blow, it breaks and piles up, forming ice hills and hummocks. Ice hills in the Arctic Ocean can reach a thickness of 40 m. ...

From [Marshland]

...It is known that the distribution of this plant is determined in part by differences in groundwater levels due to micro-topography. In small raised areas (hummocks) covered with sphagnum mosses, shrubs such as Rhododendron moniliforme, Rhododendron gracilis, and Deutzia paniculata, as well as Osmanthus japonica and Swamp grass grow. In small depressions (hollows) and flooded pools, mosses such as Eucalyptus japonica, Eucalyptus japonica, and Sphagnum holly, as well as semi-aquatic mosses such as Sphagnum nigra and Sphagnum ulmoides, grow.

*Some of the terminology explanations that mention "hummock" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…ひと冬で生長できる平たんな海氷の厚さは,北海道のオホーツク海岸で40cmくらい,オホーツク海北部で1.2mくらい,北極海で2mくらいである。海氷はその面積に比べると極めて薄いから,強い風が吹くと割れたり氷が積み重なったりして氷丘脈や氷丘hummockをつくる。北極海の氷丘は厚さが40mにも達する。…

【湿原】より

…微地形により地下水位が異なることが一因となってこの植物の分布が決められていることが知られている。ミズゴケ類でもり上がった小凸地hummock(ブルト)には,レンゲツツジ,ヒメシャクナゲ,ノリウツギなどの低木や,ヤマドリゼンマイ,ヌマガヤなどが生育する。小凹地hollow(シュレンケ)や湛水(たんすい)シュレンケpoolには,ミカヅキグサ,ヤチスギラン,ホロムイソウなどや,ハリミズゴケ,ウツクシミズゴケなどの半水生のミズゴケが生育する。…

※「hummock」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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