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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Science / Faculty of Science >
北海道大学地球物理学研究報告 = Geophysical bulletin of Hokkaido University >
第72号 >
Goto (1997) の粘性計算法の再評価
| Title: | Goto (1997) の粘性計算法の再評価 |
| Other Titles: | Re-examination of viscosity evaluation model by Goto (1997) |
| Authors: | 後藤, 章夫1 Browse this author |
| Authors(alt): | Goto, Akio1 |
| Issue Date: | 15-Mar-2009 |
| Publisher: | 北海道大学大学院理学研究院自然史科学部門（地球物理学） |
| Journal Title: | 北海道大学地球物理学研究報告 |
| Journal Title(alt): | Geophysical bulletin of Hokkaido University |
| Volume: | 72 |
| Start Page: | 159 |
| End Page: | 175 |
| Abstract: | Viscosity evaluation model by Goto (1997) has been re-examined using 608 viscosity data for 37 samples from literature. The model gives viscosity (η) of multicomponent silicate melts using Williams -- Landel -- Ferry (WLF) equation: logη = logηTg + A(T-Tg)/(B+T-Tg) {ηTg: viscosity at glass transition temperature; A, B: adjustable constants; T: temperature; Tg: glass transition temperature} Although used samples were only seven to formulate compositional dependency/independency of four parameters in WLF equation, by measuring viscosity and glass transition temperature, this model has successfully evaluated the viscosity from literature in wide range of temperature and chemical composition. Compared to other well-accepted viscosity model published in 2003, the accuracy of Goto model is almost equal overall, or seems to be higher in that it does not evaluate extremely different viscosity from the empirically determined value. This universality may be due to the application of compositional parameter from classical viscosity model that gives satisfactory evaluations for magmatic silicate melts in wide range of chemical composition at high temperature, and theoretical base of WLF equation. |
| Type: | bulletin (article) |
| URI: | http://hdl.handle.net/2115/38151 |
| Appears in Collections: | 北海道大学地球物理学研究報告 = Geophysical bulletin of Hokkaido University > 第72号
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