Earth’s inner core is changing in shape as well as in rotation rate

IF 16.1 1区 地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY Nature Geoscience Pub Date : 2025-02-10 DOI:10.1038/s41561-025-01647-x
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Abstract

The rigid-body motion of Earth’s wandering inner core has now been reliably tracked over the past 20 years. With this knowledge, we can compare seismic recordings obtained when the inner core returns to the same position after moving for several years. More is changing than just the inner core position; the soft outermost inner core probably deforms.

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地球内核的形状和自转速度都在变化
在过去的20年里,地球内核的刚体运动已经得到了可靠的追踪。有了这些知识,我们就可以比较在内核移动几年后回到同一位置时获得的地震记录。变化的不仅仅是核心位置;柔软的最外层内核可能会变形。
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来源期刊
Nature Geoscience
Nature Geoscience 地学-地球科学综合
CiteScore
26.70
自引率
1.60%
发文量
187
审稿时长
3.3 months
期刊介绍: Nature Geoscience is a monthly interdisciplinary journal that gathers top-tier research spanning Earth Sciences and related fields. The journal covers all geoscience disciplines, including fieldwork, modeling, and theoretical studies. Topics include atmospheric science, biogeochemistry, climate science, geobiology, geochemistry, geoinformatics, remote sensing, geology, geomagnetism, paleomagnetism, geomorphology, geophysics, glaciology, hydrology, limnology, mineralogy, oceanography, paleontology, paleoclimatology, paleoceanography, petrology, planetary science, seismology, space physics, tectonics, and volcanology. Nature Geoscience upholds its commitment to publishing significant, high-quality Earth Sciences research through fair, rapid, and rigorous peer review, overseen by a team of full-time professional editors.
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