Pyroclastic Flow St. Helens

Autor:

Donald A. Swanson

Shortlink:

https://czwiki.cz/b/a2a0d

Zdroj:

Wikimedia Commons

Formát:

600 x 410 Pixel (178505 Bytes)

Popis:

U.S. Geological Survey scientist examines pumice blocks at the edge of a pyroclastic flow from the May 18, 1980 eruption.

Licence:

Public domain

Credit:

United States Geological Survey - http://vulcan.wr.usgs.gov/Volcanoes/MSH/Images/MSH80/framework.html#pyroclastic_flows

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