DOI: 10.1002/2018JE005524
Scopus记录号: 2-s2.0-85044312345
论文题名: Commentary: The Feasibility of Subduction and Implications for Plate Tectonics on Jupiter's Moon Europa
作者: Kattenhorn S.A.
刊名: Journal of Geophysical Research: Planets
ISSN: 21699097
出版年: 2018
卷: 123, 期: 3 起始页码: 684
结束页码: 689
语种: 英语
英文关键词: Europa
; plate tectonics
; subduction
英文摘要: A new modeling-based study by Johnson et al. (2017, https://doi.org/10.1002/2017JE005370) lends support to the hypothesis that portions of Europa's surface may have been removed by the process of subduction, as suggested by Kattenhorn and Prockter (2014, https://doi.org/10.1038/NGEO2245). Using a simple 1-D model that tracks the thermal and density structure of a descending ice plate, Johnson et al. show that ice plates with 10% porosity and overall salt contents of ~5%, which differ in salt content by ~2.5% from the surrounding reference ice shell, are nonbuoyant and thus likely to sink through the underlying, convecting portion of the ice shell. The feasibility of subduction in an ice shell is critical to the existence of icy plate tectonics, which is hypothesized to exist at least locally on Europa, potentially making it the only other Solar System body other than Earth with a surface modified by plate tectonics. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114343
Appears in Collections: 气候减缓与适应
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作者单位: Department of Geological Sciences, University of Alaska Anchorage, Anchorage, AK, United States
Recommended Citation:
Kattenhorn S.A.. Commentary: The Feasibility of Subduction and Implications for Plate Tectonics on Jupiter's Moon Europa[J]. Journal of Geophysical Research: Planets,2018-01-01,123(3)