Radiogenic Power and Geoneutrino Luminosity of the Earth and Other Terrestrial Bodies Through Time

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10421623" target="_blank" >RIV/00216208:11320/20:10421623 - isvavai.cz</a>

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=UAV5.ECIjD" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=UAV5.ECIjD</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1029/2019GC008865" target="_blank" >10.1029/2019GC008865</a>

Result language

angličtina

Original language name

Radiogenic Power and Geoneutrino Luminosity of the Earth and Other Terrestrial Bodies Through Time

Original language description

We report the Earth&apos;s rate of radiogenic heat production and (anti)neutrino luminosity from geologically relevant short-lived radionuclides (SLR) and long-lived radionuclides (LLR) using decay constants from the geological community, updated nuclear physics parameters, and calculations of the beta spectra. We track the time evolution of the radiogenic power and luminosity of the Earth over the last 4.57 billion years, assuming an absolute abundance for the refractory elements in the silicate Earth and key volatile/refractory element ratios (e.g., Fe/Al, K/U, and Rb/Sr) to set the abundance levels for the moderately volatile elements. The relevant decays for the present-day heat production in the Earth (19.9 +/- 3.0 TW) are from(40)K,Rb-87,Sm-147,Th-232,U-235, and(238)U. Given element concentrations in kg-element/kg-rock and density rho in kg/m(3), a simplified equation to calculate the present-day heat production in a rock is h[mu W m-(3])=rho 3.387 x 10(-3) K + 0.01139Rb + 0.04595Sm+26.18Th+98.29U) The radiogenic heating rate of Earth-like material at solar system formation was some 10(3) to 10(4) times greater than present-day values, largely due to decay of Al-26 in the silicate fraction, which was the dominant radiogenic heat source for the first similar to 10 Ma. Assuming instantaneous Earth formation, the upper bound on radiogenic energy supplied by the most powerful short-lived radionuclide Al-26 (t(1/2)= 0.7 Ma) is 5.5x10(31) J, which is comparable (within a factor of a few) to the planet&apos;s gravitational binding energy. Plain Language Summary The decay of radioactive elements in planetary interiors produces heat that drives the dynamic processes of convection (core and mantle), melting, and volcanism in rocky bodies in the solar system and beyond. For elements with half-lives of 100,000 to 100 billion years, uncertainties in their decay constants range from 0.2% to similar to 4%, and comparing data from physics versus geology shows differences of about 1% to 4%. These differences, combined with uncertainties in Q values (energy released in reaction), lead to diverging results for heat production and for predictions of the amount of energy removed from the rocky body by emitted (anti)neutrinos.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10500 - Earth and related environmental sciences

Project

<a href="/en/project/GA17-01464S" target="_blank" >GA17-01464S: Constraining Earth’s radiogenic heat production using particle geoscience: geoneutrinos and noble gases</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Geochemistry, Geophysics, Geosystems

ISSN

1525-2027

e-ISSN

—

Volume of the periodical

21

Issue of the periodical within the volume

7

Country of publishing house

US - UNITED STATES

Number of pages

17

Pages from-to

e2019GC008865

UT code for WoS article

000557248500029

EID of the result in the Scopus database

2-s2.0-85088580122