Constraining Earth’s core composition from inner core nucleation [PDF]
Nature CommunicationsThe composition of Earth’s core is a fundamental property of the Earth’s deep interior, defining its present structure and long term thermal and magnetic evolution. However, the composition of the core is not well understood, with several combinations of
Alfred J. Wilson +3 more
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Low viscosity of the Earth’s inner core [PDF]
Nature Communications, 2019 The inner core of the Earth is formed of a crystalline solid which is mostly composed of iron. Here, the authors use molecular dynamics methods to show that the crystalline structure of the inner core may have a viscosity close to that of liquid iron ...
Anatoly B. Belonoshko +4 more
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Inner core static tilt inferred from intradecadal oscillation in the Earth’s rotation [PDF]
Nature Communications, 2023 The presence of a static tilt between the inner core and mantle is an ongoing discussion encompassing the geodynamic state of the inner core. Here, we confirm an approximate 8.5 yr signal in polar motion is the inner core wobble (ICW), and find that the ...
Yachong An +4 more
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Small-scale layered structures at the inner core boundary [PDF]
Nature Communications, 2023 The fine-scale seismic features near the inner core boundary (ICB) provide critical insights into the thermal, chemical, and geodynamical interactions between liquid and solid cores, and may shed light on the evolution mechanism of the Earth’s core. Here,
Baolong Zhang +6 more
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Imaging the top of the Earth’s inner core: a present-day flow model [PDF]
Scientific ReportsDespite considerable progress in seismology, mineral physics, geodynamics, paleomagnetism, and mathematical geophysics, Earth’s inner core structure and evolution remain enigmatic. One of the most significant issues is its thermal history and the current
Hrvoje Tkalčić +5 more
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Short-range order stabilizes a cubic iron alloy in Earth’s inner core [PDF]
Nature CommunicationsEarth’s inner core consists of iron (Fe) alloyed with minor light elements, predominantly silicon (Si), yet the crystal structure and seismic velocities of Fe-Si alloys at inner-core conditions remain poorly constrained.
Zhi Li, Sandro Scandolo
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The effect of compositional fluctuations in a liquid Fe–O alloy on the nucleation of Earth’s inner core [PDF]
Scientific ReportsThe Earth’s solid inner core plays a fundamental role in determining the past and present properties and dynamics of the Earth’s deep interior. Inner core growth powers the geodynamo, producing the protective global magnetic field, and provides a record ...
Alfred J. Wilson +4 more
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The structure and stability of Fe4+xS3 and its potential to form a Martian inner core [PDF]
Nature CommunicationsSeismic, geodetic and cosmochemical evidence point to Mars having a sulfur-rich liquid core. Due to the similarity between estimates of the core’s sulfur content and the iron–iron sulfide eutectic composition at core conditions, it has been concluded ...
Lianjie Man +14 more
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Inner core composition paradox revealed by sound velocities of Fe and Fe-Si alloy [PDF]
Nature Communications, 2022 The origin of the observed low shear wave velocity in the solid inner core is unclear. Here, the authors report shear wave velocities of iron and iron-silicon alloy under Earth’s core conditions by shock compression and find that neither the effect of ...
Haijun Huang +11 more
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Author Correction: Constraining Earth’s core composition from inner core nucleation [PDF]
Nature CommunicationsAlfred J. Wilson +3 more
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