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DOI | 10.1002/2017GL072996 |
The influence of meridional ice transport on Europa's ocean stratification and heat content | |
Zhu, Peiyun1; Manucharyan, Georgy E.2; Thompson, Andrew F.2; Goodman, Jason C.3; Vance, Steven D.4 | |
2017-06-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:12 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Jupiter's moon Europa likely hosts a saltwater ocean beneath its icy surface. Geothermal heating and rotating convection in the ocean may drive a global overturning circulation that redistributes heat vertically and meridionally, preferentially warming the ice shell at the equator. Here we assess the previously unconstrained influence of ocean-ice coupling on Europa's ocean stratification and heat transport. We demonstrate that a relatively fresh layer can form at the ice-ocean interface due to a meridional ice transport forced by the differential ice shell heating between the equator and the poles. We provide analytical and numerical solutions for the layer's characteristics, highlighting their sensitivity to critical ocean parameters. For a weakly turbulent and highly saline ocean, a strong buoyancy gradient at the base of the freshwater layer can suppress vertical tracer exchange with the deeper ocean. As a result, the freshwater layer permits relatively warm deep ocean temperatures. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000405854200012 |
WOS关键词 | SUBSURFACE OCEAN ; SNOWBALL EARTH ; SHELL ; CONSTRAINTS ; ENTRAINMENT ; SURFACE ; TEMPERATURES ; CONVECTION ; DYNAMICS ; FLUID |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/27794 |
专题 | 气候变化 |
作者单位 | 1.Univ Michigan, Dept Earth & Environm Sci, Ann Arbor, MI 48109 USA; 2.CALTECH, Dept Environm Sci & Engn, Pasadena, CA 91125 USA; 3.Wheaton Coll, Dept Phys, Norton, MA 02766 USA; 4.CALTECH, Jet Prop Lab, Pasadena, CA USA |
推荐引用方式 GB/T 7714 | Zhu, Peiyun,Manucharyan, Georgy E.,Thompson, Andrew F.,et al. The influence of meridional ice transport on Europa's ocean stratification and heat content[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(12). |
APA | Zhu, Peiyun,Manucharyan, Georgy E.,Thompson, Andrew F.,Goodman, Jason C.,&Vance, Steven D..(2017).The influence of meridional ice transport on Europa's ocean stratification and heat content.GEOPHYSICAL RESEARCH LETTERS,44(12). |
MLA | Zhu, Peiyun,et al."The influence of meridional ice transport on Europa's ocean stratification and heat content".GEOPHYSICAL RESEARCH LETTERS 44.12(2017). |
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