Physics
Scientific paper
Nov 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3221306d&link_type=abstract
Geophysical Research Letters, Volume 32, Issue 21, CiteID L21306
Physics
16
Atmospheric Composition And Structure: Aerosols And Particles (0345, 4801, 4906), Planetary Sciences: Solid Surface Planets: Physical Properties Of Materials, Volcanology: Explosive Volcanism, Volcanology: Volcanic Hazards And Risks
Scientific paper
Pumice particles represent the basic ``ingredient'' of many large explosive eruptions and form as a result of magma fragmentation inside the conduit. At the onset of eruption, fragmental pumices are expelled at high velocity from the crater by the overpressure of gas liberated on explosion. The resulting multiphase flow is forced through atmosphere by a variety of transportation mechanisms and pumices eventually decouple from the gas flow, settling down to form pyroclastic deposits. Here we propose new experimental data of terminal velocity together with a quantitative shape analysis of a wide range of pumice particles. The resulting model allows predicting the terminal velocity of pumice by means of easily measured particle characteristics, with an average error of 12%, which compares favourably with previous models.
Bonasia Rosanna
Braia Giuseppe
Dellino Pierfrancesco
La Volpe Luigi
Mele Daniela
No associations
LandOfFree
The analysis of the influence of pumice shape on its terminal velocity does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The analysis of the influence of pumice shape on its terminal velocity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The analysis of the influence of pumice shape on its terminal velocity will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1657460