M?ssbauer spectroscopy of samples from the 2010 Fimmv?reuháls/Eyjafjallaj?kull eruption

摘要

M?ssbauer spectra of samples from the 2010 Fimmv?reuháls/Eyjafjallaj?kull eruption are presented with determinations of the Fe~(3+)/FeTot ratios. M?ssbauer spectra of time series of samples from the Eyjafjallaj?kull eruption show a change in the characteristics of the erupted material mid-way in the eruption, suggesting changing access of water to the eruption.