Mechanical Spectroscopy on Volcanic Glasses
| dc.creator | Wagner, Norman | |
| dc.creator | Heide, Klaus | |
| dc.date | 2005-07-25 | |
| dc.date | 2005-08-18 | |
| dc.date.accessioned | 2026-07-07T06:41:25Z | |
| dc.date.available | 2026-07-07T06:41:25Z | |
| dc.description | Mechanical relaxation behaviour of various natural volcanic glasses have been investigated in the temperature range RT-1200K using special low frequency flexure (f~0.63Hz) pendulum experiments. The rheological properties complex Young's modulus M* and internal friction 1/Q have been studied from a pure elastic solid at room temperature to pure viscous melt at log(eta[Pas])=8. Several relaxation processes are assumed to act: the primary alpha-relaxation (viscoelastic process, E_a=(344...554)kJ/mol) above the glass transition temperature T_g=(935...1105)K and secondary anelastic beta', beta and gamma-relaxation processes below T_g. With a simple fractional Maxwell model with asymmetrical relaxation time distribution, phenomenological the mechanical relaxation behaviour, is described. This establish a basis of realistic concepts for modelling of volcanic or magmatic processes. | |
| dc.description | 52 pages, 20 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0507559 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0507559 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/101660 | |
| dc.subject | Disordered Systems and Neural Networks | |
| dc.subject | Materials Science | |
| dc.subject | Other Condensed Matter | |
| dc.subject | Geophysics | |
| dc.title | Mechanical Spectroscopy on Volcanic Glasses | |
| dc.type | text |