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NTIS 바로가기광물과 암석 = Korean journal of mineralogy and petrology, v.33 no.1, 2020년, pp.73 - 86
이정현 (부산대학교 화산특화연구센터) , 윤성효 (부산대학교 화산특화연구센터)
The materials generating from volcanic eruption are volcanic gases, lavas and pyroclastic materials. Volcanic ash which has small-grain size (< 2 mm in diameter) can be moved easily and disperse widely, thus it may affect to communities across hundreds of square kilometers. The impacts from volcanic...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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화산 분화 시 방출되는 물질은 무엇이 있는가? | 화산 분화 시 방출되는 물질은 화산가스, 용암, 화성쇄설물이 있다. 화성쇄설물 중 입자크기가 작은(직경 2 mm 이하) 화산재는 쉽게 이동하여 먼 거리까지 영향을 미칠 수 있다. | |
용암은 SiO2의 함량에 따라 어떤 특징을 보이는가? | 용암은 지표로 분출한 마그마에서 가스 성분이 빠져나가고 남은 것으로 SiO2 함량에 따라 현무암질, 안산암질, 유문암질용암으로 구분된다. SiO2 함량이 높아질수록 온도가 낮아지고, 점성이 증가하며, 유동성은 감소한다. 화성쇄설물은 주로 그 크기 즉 지름에 따라 화산암괴 및 화산탄(>64 mm), 화산력(64~2 mm), 화산재(<2 mm)로 구분된다. | |
화산분출물은 어떻게 나뉘는가? | 화산 분화로 인해 화산에서 방출되는 물질은 다양하다. 흔히 이러한 화산분출물은 물질의 상태에 따라 기체 상태인 화산가스, 액체 상태인 용암, 그리고 고체 상태인 화성쇄설물 즉 테프라로 나뉜다. |
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