Skip to main content

Experimental verification of the mechanisms of shock waves acceleration of volcanic particles toward metal targets: a tool to understand shock waves hazard in explosive volcanic eruptions

Objective

Despite shock waves commonly occur during explosive volcanic eruptions, a number of issues concerning their generation and propagation is still object of debate in the scientific community and the associated hazard is downplayed in the risk assessment of active volcanic areas.
Micrometric impact craters produced by volcanic ash particles were found on a steel basketball pole in one of the villages destroyed by the 1982 eruption of El Chichón volcano (Mexico). The velocities of impacts, calculated by analytical methods, showed typical shock waves values up to 980 m/s.
The research topic outlined in this proposal is the experimental acceleration of volcanic particles of different size and mass toward steel targets by shock waves produced by a rapid decompression of a pressurized system (fragmentation bomb). Research questions to be answered are: a) which is the role of the gas phase in accelerating particles by the rapid expansion produced by a shock wave? b) Which is the role of particles’ size and/or mass in the acceleration mechanism? c) What is the importance of the impact angle in the magnitude of the craters produced? The results expected will contribute to a better understanding of the mechanisms of shock waves propagation during explosive eruptions and inspire further investigations to improve hazard mitigation strategies.

Field of science

  • /engineering and technology/environmental engineering/energy and fuels/fossil energy/gas
  • /natural sciences/physical sciences/theoretical physics/particles

Call for proposal

FP7-PEOPLE-IRG-2008
See other projects for this call

Funding Scheme

MC-IRG - International Re-integration Grants (IRG)

Coordinator

LUDWIG-MAXIMILIANS-UNIVERSITAET MUENCHEN
Address
Geschwister Scholl Platz 1
80539 Muenchen
Germany
Activity type
Higher or Secondary Education Establishments
EU contribution
€ 75 000
Administrative Contact
Donald Bruce Dingwell (Prof.)