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  1. Particle fall through the atmosphere

    08 Feb 2011 | Contributor(s): William I Rose

    Particle fall in atmosphere. Particle Reynolds Numbers, turbulent and laminar flow. Shapes of volcanic ash particles. Fine particle fallout. Aggregation.Rose W I, C M Riley and S Dartevelle, 2003, Sizes and shapes of 10 ma distal ashfall pyroclasts in the Ogalalla Group, Nebraska, J Geology,...

  2. Size of volcanic ash

    08 Feb 2011 | Contributor(s): William I Rose

    Size of ash particles is discussed--ash, lapilli, fine and very fine ash, phi sizes, lognormal distributions and bimodal ones. Patterns of fallout and grain size distributions.

  3. Eruption columns

    08 Feb 2011 | Contributor(s): William I Rose

    Discussion of gas thrust, convective thrust and eruption columns. Column height and eruption rate. Convection in the atmosphere, latent heat. Stages of evolution of eruption plumes to volcanic clouds.

  4. Phreatic and phreatomagmatic fragmentation

    08 Feb 2011 | Contributor(s): William I Rose

  5. Origin of volcanic ash: Mechanisms for formation

    08 Feb 2011 | Contributor(s): William I Rose

    Mechanisms for the formation of volcanic ash are reviewed and discussed, including explosive vesiculation, phreatomagmatic explosions and milling/comminution.

  6. New Weights for PCQ Runs

    07 Feb 2011 | Contributor(s): Puneet Singla

    Here are all the files for PCQ runs.BentQuadCCUniform13pts:pdfs for all parameters are assumed to be uniform.The first column in the file corresponds to vent radius quad pointsSecond column ----> vent velocityThird column------> grain sizeFourth column------> sigmafifth column--------> quadrature...

  7. eject model

    01 Feb 2011 | Contributor(s): Larry Garver Mastin

    Eject is a user-friendly model that calculates the trajectories of blocks that are ballistically ejected from volcanic craters. It has also been used to calculate ballistic trajectories of other objects in other other settings, including missiles and bullets.Details are at:The attached zip...

  8. Conflow 1.0.5

    01 Feb 2011 | Offline Tools | Contributor(s): Larry Garver Mastin

    Conflow is a user-friendly program that calculates flow properties of magma-gas mixtures through eruptive conduits during steady explosive volcanic eruptions. It also calculates physical and thermodynamic properties of magma-gas-crystal mixtures. The attached zip file installs the program on any...

  9. Modeling volcanic eruptions: Practical experience from large-scale experiments

    29 Jan 2011 | Presentations | Contributor(s): Pierfrancesco Dellino

    This lecture is part of the Large-scale Experiments Workshop held in September, 2010.

  10. Debris avalanche and edifice failure: Sedimentary aspects of localized systems and models at large scale

    29 Jan 2011 | Presentations | Contributor(s): bernard karine

    This lecture is part of the Large-scale Experiments Workshop held in September, 2010.

  11. Magma-water interaction

    29 Jan 2011 | Presentations | Contributor(s): Bernd Zimanowski

    This lecture is part of the Large-scale Experiments Workshop held in September, 2010.

  12. Craters, diatremes and (unstable) conduits

    29 Jan 2011 | Presentations | Contributor(s): James D L White

    This lecture is part of the Large-scale Experiments Workshop held in September, 2010.

  13. Dirty plumes, tephra dispersion and deposition

    29 Jan 2011 | Presentations | Contributor(s): Shannon Kobs Nawotniak

    This lecture is part of the Large-scale Experiments Workshop held in September, 2010.

  14. Pyroclastic density currents and deposits

    29 Jan 2011 | Presentations | Contributor(s): Gert Lube

    This lecture is part of the Large-scale Experiments Workshop held in September, 2010.

  15. Integrating numerical and laboratory models of explosive eruptions with field observations

    29 Jan 2011 | Presentations | Contributor(s): Amanda Bachtell Clarke

    This lecture is part of the Large-scale Experiments Workshop held in September, 2010.

  16. Titan2d user manual (spanish)

    28 Jan 2011 | Educational Materials | Contributor(s): Michael Sheridan

    This is a translation of the Titan2D user manual by Teresita del Pilar Argoty.

  17. AshFall: A graduate course in volcanology with substantial meteorological content

    26 Jan 2011 | Courses | Contributor(s): William I Rose

    Michigan Tech's AshFall course by William I. Rose.This series of lectures was put together in 2009 as the lecture part of a graduate level course which students did some evaluations of ashfall models, comparing their results with actual ashfall deposits, including the Grain size distributions...

  18. conflow linux fortran version

    25 Jan 2011 | Offline Tools | Contributor(s): Larry Garver Mastin

    Conflow is a numerical model that calculates steady-state flow of magma-gas mixtures through volcanic conduits during explosive eruptions. It is described in publications listed at the bottom of this message. A GUI written in Visual Basic which runs Conflow on Windows is available in a separate...

  19. Estatutos de la ALVO

    24 Jan 2011 | Miscellaneous | Contributor(s): felipe aguilera, Jose L. Palma

    Documento con los detalles de los estatutos de la ALVO

  20. MENSAJE DE AÑO NUEVO ALVO

    24 Jan 2011 | Miscellaneous | Contributor(s): felipe aguilera

    Documento con un mensaje de año nuevo del comité ejecutivo para todos sus miembros y la comunidad cientí­fica en general