Abstract
Abstract: This paper reviews current knowledge about the Earth’s core and the overlying deep mantle in terms of structure, chemical and mineralogical compositions, physical properties, and dynamics, using information from seismology, geophysics, and geochemistry. High-pressure experimental techniques that can help to interpret and understand observations of these properties and compositions in the deep interior are summarized. The paper also examines the consequences of core flows on global observations such as variations in Earth’s rotation and orientation or variations in the Earth’s magnetic field. Processes currently active at the core-mantle boundary and the various coupling mechanisms between the core and the mantle are discussed, together with some evidence from magnetic field observations.
| Original language | English |
|---|---|
| Pages (from-to) | 263-302 |
| Number of pages | 40 |
| Journal | Surveys in Geophysics |
| Volume | 43 |
| Issue number | 1 |
| Early online date | 1 Feb 2022 |
| DOIs | |
| Publication status | Published - Feb 2022 |
Bibliographical note
Funding Information:R.G. Tr?nnes wrote some of the original text but decided to refrain from co-authorship. We would like to thank him for his contribution. V. Dehant has received funding from the European Research Council (ERC) under the European Union?s Horizon 2020 research and innovation program (GRACEFUL Synergy Grant Agreement No. 855677). W. van Westrenen acknowledges funding through a Netherlands Science Organization (N.W.O.) Vici grant. S. A. Campuzano acknowledges the Juan de la Cierva Formaci?n Program (FJC2018-037643-I). A. De Santis acknowledges funding from Pianeta Dinamico-Working Earth project. All the authors would like to thank ISSI for organizing the ?Probing the Earth?s Deep Interior Using in Synergy Observations of the Earth?s Gravity and Magnetic Fields, and of the Earth?s Rotation? meeting in these challenging times. Last but not least, the authors want to deeply thank S-I. Karato and an anonymous reviewer for helpful comments.
Funding Information:
R.G. Trønnes wrote some of the original text but decided to refrain from co-authorship. We would like to thank him for his contribution. V. Dehant has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (GRACEFUL Synergy Grant Agreement No. 855677). W. van Westrenen acknowledges funding through a Netherlands Science Organization (N.W.O.) Vici grant. S. A. Campuzano acknowledges the Juan de la Cierva Formación Program (FJC2018-037643-I). A. De Santis acknowledges funding from Pianeta Dinamico-Working Earth project. All the authors would like to thank ISSI for organizing the “Probing the Earth’s Deep Interior Using in Synergy Observations of the Earth’s Gravity and Magnetic Fields, and of the Earth’s Rotation” meeting in these challenging times. Last but not least, the authors want to deeply thank S-I. Karato and an anonymous reviewer for helpful comments.
Publisher Copyright:
© 2022, The Author(s).
Funding
R.G. Trønnes wrote some of the original text but decided to refrain from co-authorship. We would like to thank him for his contribution. V. Dehant has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (GRACEFUL Synergy Grant Agreement No. 855677). W. van Westrenen acknowledges funding through a Netherlands Science Organization (N.W.O.) Vici grant. S. A. Campuzano acknowledges the Juan de la Cierva Formación Program (FJC2018-037643-I). A. De Santis acknowledges funding from Pianeta Dinamico-Working Earth project. All the authors would like to thank ISSI for organizing the “Probing the Earth’s Deep Interior Using in Synergy Observations of the Earth’s Gravity and Magnetic Fields, and of the Earth’s Rotation” meeting in these challenging times. Last but not least, the authors want to deeply thank S-I. Karato and an anonymous reviewer for helpful comments. R.G. Trønnes wrote some of the original text but decided to refrain from co-authorship. We would like to thank him for his contribution. V. Dehant has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (GRACEFUL Synergy Grant Agreement No. 855677). W. van Westrenen acknowledges funding through a Netherlands Science Organization (N.W.O.) Vici grant. S. A. Campuzano acknowledges the Juan de la Cierva Formación Program (FJC2018-037643-I). A. De Santis acknowledges funding from Pianeta Dinamico-Working Earth project. All the authors would like to thank ISSI for organizing the “Probing the Earth’s Deep Interior Using in Synergy Observations of the Earth’s Gravity and Magnetic Fields, and of the Earth’s Rotation” meeting in these challenging times. Last but not least, the authors want to deeply thank S-I. Karato and an anonymous reviewer for helpful comments.
| Funders | Funder number |
|---|---|
| ISSI | |
| Juan de la Cierva Formación Program | FJC2018-037643-I |
| Netherlands Science Organization | |
| Horizon 2020 Framework Programme | 855677 |
| European Research Council | |
| Nederlandse Organisatie voor Wetenschappelijk Onderzoek |
Keywords
- Earth’s core
- Earth’s magnetic field
- Earth’s rotation
- Interior structure