| DOI: | 10.1002/2016GL071004
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| 论文题名: | Relaxation of the bulk modulus in partially molten dunite? |
| 作者: | Cline C.J.; II; Jackson I.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8362
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| EISSN: | 1944-8093
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| 出版年: | 2016
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| 卷: | 43, 期:22 | | 起始页码: | 11644
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| 结束页码: | 11651
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| 语种: | 英语
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| 英文关键词: | attenuation
; bulk relaxation
; forced oscillation
; olivine
; partial melts
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| Scopus关键词: | Olivine
; Shear strain
; Silicate minerals
; attenuation
; Australian National University
; bulk relaxation
; Forced oscillations
; High-temperature backgrounds
; Increasing temperatures
; Oscillation measurements
; Partial melt
; Elastic moduli
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| 英文摘要: | To address the possibility of melt-related bulk modulus relaxation, a forced oscillation experiment was conducted at seismic frequencies on a partially molten synthetic dunite specimen (melt fraction = 0.026) utilizing the enhanced capacity of the Australian National University attenuation apparatus to operate in both torsional and flexural oscillation modes. Shear modulus and dissipation data are consistent with those for melt-bearing olivine specimens previously tested in torsion, with a pronounced dissipation peak superimposed on high-temperature background. Flexural data exhibit a monotonic decrease in complex Young's modulus with increasing temperature under transsolidus temperatures. The observed variation of Young's modulus is well described by the relationship 1/E ~ 1/3G, without requiring relaxation of the bulk modulus. At high homologous temperatures, when shear modulus is low, extensional and flexural oscillation measurements have little resolution of bulk modulus, and thus, only pressure oscillation measurements can definitively constrain bulk properties at these conditions. ©2016. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85003819957&doi=10.1002%2f2016GL071004&partnerID=40&md5=75db1593f59cf7b0729ae6978d0aa8d8
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/9325
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Research School of Earth Sciences, Australian National University, Canberra, ACT, Australia
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| Recommended Citation: | |
Cline C.J.,II,Jackson I.. Relaxation of the bulk modulus in partially molten dunite?[J]. Geophysical Research Letters,2016-01-01,43(22).
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