A minimum temperature difference is required to drive mantle convection

the verdict

SUPPORTED

the evidence backs this

Recorded sources

3 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that a minimum temperature difference is required to drive mantle convection?

Yes. Geophysical studies and thermal convection experiments confirm that a critical temperature difference or gradient is necessary to drive convective flow.

Verdict: SUPPORTED · 3 sources for, 0 against · Last checked 4 Aug 2026

The analysis

The claim that a minimum temperature difference is required to drive convection is a fundamental physical principle supported by multiple papers examining thermal convection, Rayleigh numbers, and critical temperature gradients in fluid layers and planetary mantles.

Evidence for · 3

Generation of mega‐plumes from the core‐mantle boundary in a compressible mantle with temperature‐dependent viscosity

1998

This study models mantle convection driven by a temperature drop across thermal boundary layers.

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Thompson, P. F. & Tackley, P. J. (1998). Generation of mega‐plumes from the core‐mantle boundary in a compressible mantle with temperature‐dependent viscosity. doi.org. https://doi.org/10.1029/98gl01228

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More for · 2

The Effect of Temperature Modulation on Natural Convection in a Horizontal Layer Heated From Below: High-Rayleigh-Number Experiments

1994

This experimental investigation examines thermal convection driven by boundary temperature differences and Rayleigh numbers.

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Mantle, J., Kazmierczak, M., & Hiawy, B. (1994). The Effect of Temperature Modulation on Natural Convection in a Horizontal Layer Heated From Below: High-Rayleigh-Number Experiments. doi.org. https://doi.org/10.1115/1.2910913

Brinkman–Bénard convection in a box with temperature modulation

2024

This research analyzes the critical temperature difference required between surfaces for the onset of convection.

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Dev, K., Suthar, O. P., & Siddheshwar, P. G. (2024). Brinkman–Bénard convection in a box with temperature modulation. doi.org. https://doi.org/10.1063/5.0223384

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What does the evidence say?

Receipt History

first checked04 Aug 2026

judged → SUPPORTED · 8604 Aug 2026

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