Hotspots, mantle plumes and core heat loss

By Stéphane Labrosse. 2002

152 citations recorded by the source corpus.

View Paper: https://www.semanticscholar.org/paper/4b93bfab19324c5ef37376aa5c830c70f06f1f60

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In Geophysics

Citations in the corpus

Seismic tomography, surface uplift, and the breakup of Gondwanaland: Integrating mantle convection backwards in time (2003, background): “This figure for the fraction of bottom-heating is larger than the value of 10% estimated from hotspot heat flow [Sleep, 1990], but recent studies suggest that the heat flux from the core should be higher than this [Labrosse, 2002; Romanowicz and Gung, 2002].”
Thermal and magnetic evolution of the Earth’s core (2003, background): “…discussion in Labrosse et al., 2001) due to the fact that the heat flow at the bottom of an internally heated convection system is mainly controlled by the arrival of cold down welling currents(Labrosse, 2002)and is then expected to decrease following the decrease of heat sources in the mantle.”
The influence of potassium on core and geodynamo evolution (2003, background): “As discussed above, it may be too simple; future models will need to investigate the effects on the CMB heat flux of chemical layering (Montague & Kellogg 2000; Jellinek & Manga 2002), mantle phase transitions (McKenzie & Richter 1981; Butler & Peltier 2000), and plate tectonics (Labrosse 2002).”
Archean Geodynamics and the Thermal Evolution of Earth (2013, background): “The present-day core heat flux is estimated to be ~5-10 TW, based on a likely temperature gradient across the D′′ layer and its thermal conductivity [Buffett, 2002; Labrosse, 2002].”
Thermal evolution of the core with a high thermal conductivity (2014, unknown): “%) ﬂuctuations of the CMB heat ﬂow are expected, if the bottom boundary layer of the mantle is inﬂuenced by the arrival of subducted plates (Labrosse, 2002) whose dynamics is highly variable (eg.”
Constraints on thermochemical convection of the mantle from plume heat flux, plume excess temperature, and upper mantle temperature (2006, background): “may only represent a lower bound on the CMB heat flux, because part of the CMB heat flux should be consumed to heat up downwelling slabs that reach the CMB [Labrosse, 2002].”
Temperatures, Heat, and Energy in the Mantle of the Earth (2007, methodology): “ent contributions to the energy and entropy budgets as a function of Ohmic dissipation for zero radiogenic heat production from Labrosse (2003). c 1⁄4 1 TW implies a heat flux of about 6 TW at the CMB.”
LINKS BETWEEN LONG‐LIVED HOT SPOTS, MANTLE PLUMES, D″, AND PLATE TECTONICS (2004, background): “[60] The first condition is widely accepted and the second is reasonable on geochemical grounds [e.g., Walker et al., 1995; Brandon et al., 2003], although geodynamical constraints on the timing and rate of inner core growth are model-dependent [e.g., Labrosse et al., 2001; Labrosse, 2002].”
Scaling properties of convection-driven dynamos in rotating spherical shells and application to planetary magnetic fields (2006, background): “…related to inner core growth, are important because they put constraints on the age of the Earth’s inner core, the necessity for heat-producing elements such as40K in the core, and the degree to which convection in the Earth’s mantle is driven by heating from the core (Labrosse 2002; Buffett 2003).”
Thermal evolution of the Earth: Secular changes and fluctuations of plate characteristics (2007, background): “The snapshot of the temperature distribution is typical of this type of convection, which is controlled by downwelling plumes (Labrosse, 2002).”