Mercury: Inside the Iron Planet

被引：6

作者：

Hauck, Steven A., II ^{[1
]}

Johnson, Catherine L. ^{[2
,3
]}

机构：

[1] Case Western Reserve Univ, Dept Earth Environm & Planetary Sci, Cleveland, OH 44106 USA

[2] Univ British Columbia, Dept Earth Ocean & Atmospher Sci, Vancouver, BC, Canada

[3] Planetary Sci Inst, 1700 East Ft Lowell,Suite 106, Tucson, AZ USA

来源：

ELEMENTS | 2019年 / 15卷 / 01期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Mercury; MESSENGER mission; internal structure; magnetic field; metallic core; MAGNETIC-FIELD; MESSENGER; CONSTRAINTS;

D O I：

10.2138/gselements.15.1.21

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

NASA's MESSENGER spacecraft orbited Mercury from 2011 to 2015 and has provided new insights into the interior of the innermost planet. Mercury has a large metallic core similar to 2,000 km in radius covered by a thin layer of rock only similar to 420 km thick. Furthermore, a surprisingly large fraction of this outer layer was produced by melting of deeper rocks, forming a light crust similar to 35 km thick. The core is now known to produce a magnetic field that has intriguing similarities and differences compared to Earth's field. Some rocks near the surface are magnetized, and the strongest magnetizations are likely to be >3.5 billion years old. This new understanding of Mercury's interior is helping reveal how rocky planets operate.

引用

页码：21 / 26

页数：6

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