氷河ひょうが決壊けっかい洪水こうずいじゃありません
hyōga kokekkaikōzuijārimasen

Noun
Desu Copula
Negation Auxiliary

The polite negative form of 氷河湖決壊洪水

1. It is not a glacial lake outburst flood.

Negative
Polite
Terminal Form