ocean trough

氷河学・雪氷学・地形学

Synonyms (1)：

Broader terms (1)：

ocean basin (海盆)
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Narrower terms (4)：

Nankai Trough (南海トラフ)
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Okinawa Trough (沖縄トラフ)
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Mariana trough (マリアナトラフ)
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Sagami trough (相模トラフ)
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