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DOI | 10.1038/s41467-020-15755-2 |
Effect of sulfur on sound velocity of liquid iron under Martian core conditions | |
Nishida, Keisuke1,9; Shibazaki, Yuki2,3; Terasaki, Hidenori4; Higo, Yuji5; Suzuki, Akio6; Funamori, Nobumasa7; Hirose, Kei1,8 | |
2020-05-13 | |
发表期刊 | NATURE COMMUNICATIONS |
ISSN | 2041-1723 |
出版年 | 2020 |
卷号 | 11期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan; Germany |
英文摘要 | Sulfur has been considered to be a predominant light element in the Martian core, and thus the sound velocity of Fe-S alloys at relevant high pressure and temperature is of great importance to interpret its seismological data. Here we measured the compressional sound velocity (V-P) of liquid Fe, Fe80S20 and Fe57S43 using ultrasonic pulse-echo overlap method combined with a Kawai-type multi-anvil apparatus up to 20GPa, likely corresponding to the condition at the uppermost core of Mars. The results demonstrate that the V-P of liquid iron is least sensitive to its sulfur concentration in the Mars' whole core pressure range. The comparison of seismic wave speeds of Fe-S liquids with future observations will therefore tell whether the Martian core is molten and contains impurity elements other than sulfur. Applying high-pressure and -temperature experiments, the authors here measure sound velocities in various liquid Fe-S alloys under conditions expected for the upper Martian core. The results together with future InSight mission data will help to understand whether the Martian core is molten Fe-S. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000536301400001 |
WOS关键词 | EQUATION-OF-STATE ; HIGH-PRESSURE ; FE-S ; THERMAL-EXPANSION ; DENSITY ; ALLOYS ; MODEL ; MARS |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/267673 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Tokyo, Dept Earth & Planetary Sci, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan; 2.Tohoku Univ, Frontier Res Inst Interdisciplinary Sci, Aoba Ku, 6-3 Aoba, Sendai, Miyagi 9808578, Japan; 3.Natl Inst Mat Sci, Int Ctr Young Scientists, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan; 4.Osaka Univ, Dept Earth & Space Sci, 1-1 Machikaneyama Cho, Toyonaka, Osaka 5600043, Japan; 5.Japan Synchrotron Radiat Res Inst, 1-1-1 Kouto,Sayo Cho, Sayo, Hyogo 6795198, Japan; 6.Tohoku Univ, Dept Earth Sci, Aoba Ku, 6-3 Aoba, Sendai, Miyagi 9808578, Japan; 7.High Energy Accelerator Res Org KEK, Inst Mat Struct Sci, 1-1 Oho, Tsukuba, Ibaraki 3050801, Japan; 8.Tokyo Inst Technol, Earth Life Sci Inst, Meguro Ku, 2-12-1 Ookayama, Tokyo 1528550, Japan; 9.Univ Bayreuth, Bayer Geoinst, D-95440 Bayreuth, Germany |
推荐引用方式 GB/T 7714 | Nishida, Keisuke,Shibazaki, Yuki,Terasaki, Hidenori,et al. Effect of sulfur on sound velocity of liquid iron under Martian core conditions[J]. NATURE COMMUNICATIONS,2020,11(1). |
APA | Nishida, Keisuke.,Shibazaki, Yuki.,Terasaki, Hidenori.,Higo, Yuji.,Suzuki, Akio.,...&Hirose, Kei.(2020).Effect of sulfur on sound velocity of liquid iron under Martian core conditions.NATURE COMMUNICATIONS,11(1). |
MLA | Nishida, Keisuke,et al."Effect of sulfur on sound velocity of liquid iron under Martian core conditions".NATURE COMMUNICATIONS 11.1(2020). |
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