火山灰

• 読み: かざんばい
• ローマ字: kazanbai
• 漢字の分解: 火 (ka/hi) — fire | 山 (san/yama) — mountain | 灰 (hai) — ash
• 発音: /ka.zaɴ.baɪ/

意味

Volcanic ash. Fine particulate matter ejected from a volcano during an eruption, capable of spreading across vast distances.

A compound noun used in geology, meteorology, and disaster management. Volcanic ash consists of tiny rock and glass fragments distinct from wood ash. In Japan, eruptions of Sakurajima and other active volcanoes regularly deposit 火山灰 on nearby cities. Ash falls can disrupt aviation, agriculture, and daily life, and are tracked by the Japan Meteorological Agency.

例文

1. 噴火後、街全体が火山灰に覆われ、空が白く霞んだ。
2. 火山灰が農作物に積もり、今年の収穫に深刻な影響が出た。
3. 飛行機は火山灰を避けるため、航路を大幅に変更せざるを得なかった。

使い方ガイド

場面: geology, disaster management, meteorology, aviation

トーン: neutral

起源と歴史

Compound of 火山 (kazan, 'volcano') and 灰 (hai, 'ash'). 火山 itself combines 火 (fire) and 山 (mountain), making the full compound literally 'fire mountain ash.'

文化的背景

時代: Modern

世代: All ages

社会的背景: Universal