Browsing by Author "Jaupart C."

Browsing by Author "Jaupart C."

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  • FRAGMENTATION OF MAGMA DURING PLINIAN VOLCANIC ERUPTIONS 
    Gardner Ja.E.; Thomas R.M.E.; Jaupart C.; Tait S. (1996)
    The ratio of the volume of vesicles (gas) to that of glass (liquid) in pumice clasts (VG/VL) reflects the degassing and dynamic history experienced by a magma during an explosive eruption. VG/VL in pumices from a large ...
  • GAS CONTENT, ERUPTION RATE AND INSTABILITIES OF ERUPTION REGIME IN SILICIC VOLCANOES 
    Jaupart C.; Allègre C.J. (1991)
    In silicic volcanoes, eruptions commonly begin with violent explosive phases and evolve towards a regime of dome formation. This transition is characterized by a decrease of gas volume fraction, which has usually been ...
  • SIMPLE FLUID DYNAMIC MODELS OF VOLCANIC RIFT ZONES 
    Meriaux C.; Jaupart C. (1995)
    The dynamics of magma flow through a reservoir connected to a fissure in an elastic medium is investigated. Magma is supplied to the reservoir at a rate which may vary with time. The distribution of fluid pressure, the ...
  • THE DISTRIBUTIONS OF SLIP RATE AND DUCTILE DEFORMATION IN A STRIKE-SLIP SHEAR ZONE 
    Rolandone F.; Jaupart C. (2002)
    A simple mechanical model and dimensional analysis are used to derive a scaling law for the partitioning between slip rate on a strike-slip fault and distributed deformation in the far-field. The depth of the fault, the ...
  • THE GENERATION OF GAS OVERPRESSURE IN VOLCANIC ERUPTIONS 
    Massol H.; Jaupart C. (1999)
    Observations of natural eruption products show that different parts of a single magma batch may experience different degassing histories during ascent in a volcanic conduit. In non-explosive eruptions, lava issuing from a ...