OREGON STATE UNIVERSITY

Changes are afoot!


Hello and Welcome to VW!   

Rocky - The Original VW Mascot

We are currently in the midst of some major repairs and changes and things may look a little wonky for a bit, but all of the content (and much much more soon) will still be there!    We've been going strong since 1995 and are making changes now to get ready for our upcoming twentieth anniversary! 

VW served nearly 5 million pages last month!   
Thank you for your ongoing support!!  Cool

We hope to be 100% back up and running by the end of August.

Earth Science Lessons are under major renovations, we hope to have these pages up and running like new by the end of September.

Thank you for your patience!

Floating Pumice – an Oceanic Hazard?

krakatoaeruption

 

Under water volcanoes, both shallow and deep, erupt more often than we think. When an exceptionally large underwater volcano erupts, the lava that is produced cools quickly, trapping gas bubbles within the rock. This forms pumice, a highly vesicular, highly porous rock that is light enough to float on water.

Large enough volumes of pumice can be violently ejected during eruptions, rising to the surface of the ocean to form floating rafts of pumice. Such pumice rafts have been seen after historical eruptions such as Krakatoa erupting in 1883, spewing pumice into the ocean and clogging harbors in Indonesia.

 

The Predicted Volcanic Eruption

Members of the Volcanic Risks Solutions team at Massey University in New Zealand have successfully predicted a volcanic eruption.  

A volcanic eruption of their creation, that is...!

Picture: The Volcanic Risks Solutions team; Shane Cronin,
Eric Breard (top), Dr Gert Lube and Professor Jim Jones with the Tower of Doom.


This team, led by Professor Shane Cronin and Dr Gert Lube, has created the world's first research project to investigate pyroclastic flows.


Pyroclastic flows are flows of a mixture of hot gas and particles that are emitted during a volcanic eruption, particularly like the eruptions found in New Zealand.