表ひょう層そう雪崩なだれ

noun

surface avalanche

Technical term in snow science and disaster prevention; refers to an avalanche where only the surface layer of snow slides, often triggered by new snowfall or wind.

• 表ひょう層そう雪崩なだれは、新しん雪せつが積つもった後あとに発はっ生せいしやすい。