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南海トラフ

nankai torafu
noun★Intermediate— Nankai Trough
technical

A major subduction zone off the coast of southwestern Japan, known for generating large earthquakes and tsunamis.

南海トラフ巨大地震は数十年に一度発生する可能性がある。

A mega-earthquake in the Nankai Trough could occur once every several decades.

💡

The Nankai Trough is a critical area for seismic research due to its potential for catastrophic earthquakes.

Collocations

南海トラフ巨大地震Nankai Trough mega-earthquake南海トラフ地震Nankai Trough earthquake

Synonyms

南海トラフ地震帯南海トラフ断層

Related Phrases

南海トラフ巨大地震phrase
Nankai Trough mega-earthquake

💡Pro Tip

Geological Significance

The Nankai Trough is a subduction zone where the Philippine Sea Plate is subducting beneath the Eurasian Plate, making it a high-risk area for seismic activity.

⚡Gold Rule

Scientific Context

Always use '南海トラフ' in technical discussions about seismology or geology in Japan.

📖Word Origin

Composed of '南海' (Nankai, meaning 'South Sea') and 'トラフ' (trough, a geological term for a depression in the ocean floor).

📝Usage Notes

The term is primarily used in scientific and disaster preparedness contexts in Japan.

Word Breakdown

南海
South Sea
root
+
トラフ
trough (geological depression)
root
和英辞典

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