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Volcano Hazards | U.S. Geological Survey

Volcano Hazards | U.S. Geological Survey

The United States has 169 active volcanoes. More than half of them could erupt explosively, sending ash up to 20,000 or 30,000 feet where commercial air traffic flies. USGS scientists are working to improve our understanding of volcano hazards to help protect communities and reduce the risks.

usgs.gov2017年1月30日

Volcano Eruptions

Volcano Erupts on Japanese Island

Volcano Erupts on Japanese Island

FacebookNBC News

已浏览 50.6万次2015年5月29日

Mount Mayon volcano alert raised after ash and lava spill out

Mount Mayon volcano alert raised after ash and lava spill out

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Hawaii's Kilauea volcano still erupting, more than 2 months later

Hawaii's Kilauea volcano still erupting, more than 2 months later

已浏览 31.3万次2018年7月18日

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Map volcanoes of the world, volcano basic data

Map volcanoes of the world, volcano basic data

shutterstockMr Frestea

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Explore an Interactive Volcano Map

Explore an Interactive Volcano Map

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Hawaii’s Kilauea volcano erupts, USGS reports

Hawaii’s Kilauea volcano erupts, USGS reports

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Volcano Types

Types of Volcanoes | Definition, Characteristics & Examples

Types of Volcanoes | Definition, Characteristics & Examples

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KS2 Parts of a Volcano Labelling Activity

KS2 Parts of a Volcano Labelling Activity

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Types of Volcanoes & Eruptions

Types of Volcanoes & Eruptions

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