Sound velocity measurements in liquid Fe–S at high pressure: Implications for Earth's and lunar cores
書誌事項
- 公開日
- 2013-01
- 資源種別
- journal article
- 権利情報
-
- https://www.elsevier.com/tdm/userlicense/1.0/
- https://www.elsevier.com/legal/tdmrep-license
- https://doi.org/10.15223/policy-017
- https://doi.org/10.15223/policy-037
- https://doi.org/10.15223/policy-012
- https://doi.org/10.15223/policy-029
- https://doi.org/10.15223/policy-004
- DOI
-
- 10.1016/j.epsl.2012.11.042
- 公開者
- Elsevier BV
この論文をさがす
説明
Abstract The P-wave velocity ( V P ) of liquid Fe 57 S 43 was measured up to 5.4 GPa using an ultrasonic method combined with the synchrotron X-ray technique. The V P of liquid Fe 57 S 43 showed little change with temperature, but increased almost linearly from 3105±11 m/s to 3845±9 m/s with increasing pressure from 2.4 to 5.4 GPa. This can be approximated by V P [m/s]=2664+205.4× P , where P is the pressure in GPa. The V P of liquid Fe 57 S 43 at 2.4–5.4 GPa was significantly lower than that of pure liquid Fe. However, the pressure dependence of V P of the liquid Fe 57 S 43 was markedly higher than that of pure liquid Fe. The marked difference in the pressure dependences of V P between pure liquid Fe and liquid Fe 57 S 43 may cause V P crossover at around 7 GPa. As a result, the V P of liquid Fe 57 S 43 would become higher than that of pure liquid Fe at pressures higher than 7 GPa. Thus, S decreases V P at low pressures such as those of the lunar outer core, but would increase it at the high pressures of the Earth's outer core. Assuming the lunar core consists of a liquid Fe–FeS outer core and a solid Fe inner core, the expected V P in the lunar outer core ranges from 3756 to 4230 m/s.
収録刊行物
-
- Earth and Planetary Science Letters
-
Earth and Planetary Science Letters 362 182-186, 2013-01
Elsevier BV
- Tweet
詳細情報 詳細情報について
-
- CRID
- 1360004232135286400
-
- ISSN
- 0012821X
-
- 資料種別
- journal article
-
- データソース種別
-
- Crossref
- KAKEN
- OpenAIRE
