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Thermodynamics of water solubility in silicate melts under pressures
Isentropic rise path of a water oversaturated magma body
Vibrational spectroscopy of water-bearing silicate glasses
The major area of my interest is experimental investigation of magmatic processes, with a specific interest in the role of volatile components such as water. My current concern is water-oversaturation phenomenon in a rising magma body. Water is a major volatile component dissolved in magma at depth (up to 4-5 wt% or 10 mol% at 100 MPa), and is capable of nearly complete escape from the melt (but being sustained as vapor bubbles) when the magma rises to near the surface. Such a phenomenon promotes a major change in the energetic properties of the system. My research will help in fully quantifying the energetic effects of water oversaturation in a magmatic melt, which thereby makes it possible to describe the P-V-T evolution of a rising water-oversaturated magma body as a simple continuum problem. This will provide a rigorous petrological base for better understanding the dynamics of magma migration beneath volcanoes.
Shigeru Yamashita's Resources
Some stand-alone applications and....
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