Search Results - "Driscoll, Peter E."
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Geodynamo Conductivity Limits
Published in Geophysical research letters (28-07-2019)“…In a metal, as in Earth's core, the thermal and electrical conductivities are assumed to be correlated. In a planetary dynamo this implies a contradiction:…”
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Investigating metallic cores using experiments on the physical properties of liquid iron alloys
Published in Frontiers in earth science (Lausanne) (27-09-2022)“…An outstanding goal in planetary science is to understand how terrestrial cores evolved to have the compositions, thermal properties, and magnetic fields…”
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Simulating 2 Ga of geodynamo history
Published in Geophysical research letters (16-06-2016)“…The paleomagnetic record indicates the geodynamo has been active over much of Earth history with surprisingly little trend in paleointensity. Variability,…”
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Frequency of Proterozoic geomagnetic superchrons
Published in Earth and planetary science letters (01-03-2016)“…Long-term geodynamo evolution is expected to respond to inner core growth and changing patterns of mantle convection. Three geomagnetic superchrons, during…”
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A Scaling Relation for Core Heating by Giant Impacts and Implications for Dynamo Onset
Published in Journal of geophysical research. Planets (01-05-2024)“…Accretional heating of Earth's interior during formation is pivotal to its subsequent thermal and chemical evolution. In particular, impact heating of Earth's…”
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History and Future of the Martian Dynamo and Implications of a Hypothetical Solid Inner Core
Published in Journal of geophysical research. Planets (01-04-2021)“…Although Mars does not possess a global magnetic field today, regions of its crust are strongly magnetized, consistent with an early dynamo, likely powered by…”
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Nonrandom geomagnetic reversal times and geodynamo evolution
Published in Earth and planetary science letters (01-02-2014)“…Shermanʼs ω-test applied to the Geomagnetic Polarity Time Scale (GPTS) reveals that geomagnetic reversals in the Phanerozoic deviate substantially from random…”
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Corrigendum: Investigating metallic cores using experiments on the physical properties of liquid iron alloys
Published in Frontiers in earth science (Lausanne) (17-08-2023)Get full text
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Paleomagnetic Biases Inferred From Numerical Dynamos and the Search for Geodynamo Evolution
Published in Frontiers in earth science (Lausanne) (21-08-2018)“…The paleomagnetic record is central to our understanding of the history of the Earth. The orientation and intensity of magnetic minerals preserved in ancient…”
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From superchrons to secular variation: A broadband dynamo frequency spectrum for the geomagnetic dipole
Published in Earth and planetary science letters (15-02-2012)“…We build a broadband frequency spectrum for geomagnetic dipole intensity variations originating in the core using results from numerical dynamos. Scaling…”
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Geodynamo reversal frequency and heterogeneous core–mantle boundary heat flow
Published in Physics of the earth and planetary interiors (01-05-2010)“…We analyze more than two hundred and forty magnetic polarity reversals and excursions over forty million years of time from numerical dynamos with…”
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Testing the dynamic coupling of the core-mantle and inner core boundaries
Published in Journal of geophysical research. Solid earth (01-07-2015)“…The proposal that the seismically observed hemispherical asymmetry of Earth's inner core is controlled by the heat flux structure imposed on the outer core by…”
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Geomagnetic polarity reversals, Earth's core evolution, and conditions for dynamo action in the cores of terrestrial exoplanets
Published 01-01-2010“…Planetary dynamos are responsible for the generation of large-scale magnetic fields and are ubiquitous in the solar system. Magnetic fields generated by dynamo…”
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Whole planet coupling between climate, mantle, and core: Implications for the evolution of rocky planets
Published 18-11-2017“…Geochemistry, Geophysics, Geosystems, 17(5), 1885-1914 (2016) Earth's climate, mantle, and core interact over geologic timescales. Climate influences whether…”
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The Habitability of Proxima Centauri b: II: Environmental States and Observational Discriminants
Published 30-08-2016“…Proxima Centauri b provides an unprecedented opportunity to understand the evolution and nature of terrestrial planets orbiting M dwarfs. Although Proxima Cen…”
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The Habitability of Proxima Centauri b I: Evolutionary Scenarios
Published 24-08-2016“…We analyze the evolution of the potentially habitable planet Proxima Centauri b to identify environmental factors that affect its long-term habitability. We…”
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