Zobrazeno 1 - 10
of 186
pro vyhledávání: '"Davies CJ"'
Publikováno v:
Frontiers in Earth Science
There has been longstanding controversy about whether the influence of lateral variations in core-mantle boundary heat flow can be detected in paleomagnetic records of geomagnetic field behavior. Their signature is commonly sought in globally distrib
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https://explore.openaire.eu/search/publication?articleId=doi_dedup___::69a0c10a3e0fe2ac1802df9a1ce47c14
https://doi.org/10.3389/feart.2022.957815
https://doi.org/10.3389/feart.2022.957815
Elucidating the processes in the liquid core that have produced observed palaeointensity changes over the last 3.5 Gyr is crucial for understanding the dynamics and long-term evolution of Earth’s deep interior. We combine numerical geodynamo simula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=core_ac_uk__::fe9c2fa4901587b4ab353a01765504b0
https://eprints.whiterose.ac.uk/177190/7/ggab342.pdf
https://eprints.whiterose.ac.uk/177190/7/ggab342.pdf
Classical nucleation theory describes the formation of the first solids from supercooled liquids and predicts an average waiting time for a system to freeze as it is cooled below the melting temperature. For systems at low to moderate undercooling, w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::532799d4a154a129f827a87226a5e185
https://doi.org/10.1103/physrevb.103.214113
https://doi.org/10.1103/physrevb.103.214113
Autor:
Davies, CJ, Mound, JE
Publikováno v:
Geophysical Journal International. 219:S21-S32
SUMMARY Temperature anomalies in Earth’s liquid core reflect the vigour of convection and the nature and extent of thermal core–mantle coupling. Numerical simulations suggest that longitudinal temperature anomalies forced by lateral heat flow var
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::71255c800063263d8122cf08f51cc660
https://doi.org/10.1093/gji/ggz254
https://doi.org/10.1093/gji/ggz254
Localized regions of low geomagnetic intensity such as the South Atlantic Anomaly allow energetic particles from the Van Allen radiation belt to precipitate into the atmosphere and have been linked to a signature in the form of red aurora–like airg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=core_ac_uk__::7944a6b76dc49c1bd3afb813159dd7c3
https://eprints.whiterose.ac.uk/173075/7/e2026080118.full.pdf
https://eprints.whiterose.ac.uk/173075/7/e2026080118.full.pdf
Autor:
Mound, JE, Davies, CJ
Seismic and geomagnetic observations have been used to argue both for and against a global stratified layer at the top of Earth's outer core. Recently, we used numerical models of turbulent thermal convection to show that imposed lateral variations i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::79e7eba398c8490ba1bf6f46911e2965
https://eartharxiv.org/r52wc
https://eartharxiv.org/r52wc
The geomagnetic field displays complicated variations over a broad range of frequencies. These variations can be decomposed by frequency and linked to physical processes using frequency domain spectral methods. These spectral methods are well develop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=core_ac_uk__::b1ae3739d49d1cce05589f714baee68e
https://eprints.whiterose.ac.uk/140318/1/energy_balance(freq)_revised_v2.pdf
https://eprints.whiterose.ac.uk/140318/1/energy_balance(freq)_revised_v2.pdf
Autor:
Davies, CJ, Constable, CG
We use numerical dynamo simulations to investigate rapid changes in geomagnetic field intensity. The work is motivated by paleomagnetic observations of ‘geomagnetic spikes’, events where the field intensity rose and then fell by a factor of 2–3
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=core_ac_uk__::a78a4c130827de22aaa7b742014ff2dd
https://eprints.whiterose.ac.uk/136595/1/dc_epsl.pdf
https://eprints.whiterose.ac.uk/136595/1/dc_epsl.pdf
Autor:
Davies, CJ, Pommier, A
The decline of Mars' global magnetic field some 3.8-4.1 billion years ago is thought to reflect the demise of the dynamo that operated in its liquid core. The dynamo was probably powered by planetary cooling and so its termination is intimately tied
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b01bfc4c151a4294b15a5f5089c357d
https://eprints.whiterose.ac.uk/122714/8/1-s2.0-S0012821X17305940-main.pdf
https://eprints.whiterose.ac.uk/122714/8/1-s2.0-S0012821X17305940-main.pdf
Autor:
Davies, CJ
Thermal evolution models of Earth's core constrain the power available to the geodynamo process that generates the geomagnetic field, the evolution of the solid inner core and the thermal history of the overlying mantle. Recent upward revision of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=core_ac_uk__::ab03dd6b1defa236c298957abfa3388e
https://eprints.whiterose.ac.uk/85599/1/davies_pepi_14.pdf
https://eprints.whiterose.ac.uk/85599/1/davies_pepi_14.pdf