Numerical models of caldera-scale volcanic eruptions on Earth, Venus, and Mars
- Univ. of British Columbia, British Columbia (Canada)
Volcanic eruptions of gassy magmas on Earth, Venus, and Mars produce plumes with markedly different fluid dynamics regimes. In large part the differences are caused by the differing atmospheric pressures and ratios of volcanic vent pressure to atmospheric pressure. For each of these planets, numerical simulations of an eruption of magma containing 4 weight percent gas were run on a workstation. On Venus the simulated eruption of a pressure-balanced plume formed a dense fountain over the vent and continuous pyroclastic flows. On Earth and Mars, simulated pressure-balanced plumes produced ash columns, ash falls, and possible small pyroclastic flows. An overpressured plume, illustrated for Mars, exhibited a complex supersonic velocity structure and internal shocks. 31 refs., 7 figs., 2 tabs.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 103432
- Journal Information:
- Science, Journal Name: Science Journal Issue: 5229 Vol. 269; ISSN SCIEAS; ISSN 0036-8075
- Country of Publication:
- United States
- Language:
- English
Similar Records
Venus volcanism
Computer simulations of explosive volcanic eruptions
Numerical models of Plinian eruption columns and pyroclastic flows
Conference
·
Mon Dec 31 23:00:00 EST 1984
· Geol. Soc. Am., Abstr. Programs; (United States)
·
OSTI ID:6461587
Computer simulations of explosive volcanic eruptions
Conference
·
Sat Dec 31 23:00:00 EST 1988
·
OSTI ID:6069599
Numerical models of Plinian eruption columns and pyroclastic flows
Journal Article
·
Thu Feb 09 23:00:00 EST 1989
· J. Geophys. Res.; (United States)
·
OSTI ID:6399669