Pyroclastic density currents and local topography as seen with the conveyer model

15 Apr 2014 | Contributor(s): Domenico M. Doronzo

Pyroclastic density currents (PDCs) are multiphase flows generated during explosive volcanic eruptions, and they move down the volcano, and over the surrounding topography. The flow-topography interaction can play a fundamental role in the sedimentary processes, and in the resulting deposit...

Underwater volcano disaster - an Oxford Sparks Animation

19 Mar 2014 | Contributor(s): David Pyle

A short (2 minute) animation of a subduction zone and volcano, introducing the processes involved in subduction, melting and volcanism.This animation can be used as a stand alone item, or in a classroom. We have developed some class activities around an exercise in volcano monitoring at an...

GPS and Volcano Monitoring

11 Aug 2011 | Contributor(s): Jose Luis Palma

This presentation is part of the workshop "Volcanic Hazards and Remote Sensing in Pacific Latin America" held in Costa Rica in January 2011.Speaker: Chuck DeMets, University of Wisconsin-MadisonGPS and Volcano Monitoring .mp4Differential GPS as a Monitoring Tool on Volcano Santa Ana (Illamatepec)...

Large Scale Experiments on Volcanic Processes (EOS)

19 Jul 2011 | Contributor(s): Greg A Valentine

Some of the least understood and most hazardous geologic processes involve complex multiphase flows, particularly those related to explosive volcanic eruptions. These phenomena inherently involve a wide range of characteristic length and time scales, as well as processes that are coupled across...

Mount St Helens 1980-6 Activity summary

27 Apr 2011 | Educational Materials | Contributor(s): William I Rose

This series of two lectures summarizes the sequence of events asssociated with the 1980-86 eruptions of Mount St Helens, Washington State, USA. It is intended as a refresher for students and researchers.Lipman, Peter W., and Mullineaux, Donal R. (eds.), 1981, The 1980 Eruptions of Mount St....