Entropy-information perspective to radiogenic heat distribution in continental crust

Depth distribution of radiogenic heat sources in continental crust is an important parameter that controls its thermal structure as well as the mantle heat flow at the base of continental lithosphere. Various models for the depth distribution of radiogenic heat sources have been proposed. Starting f...

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Bibliographic Details
Published in:Nonlinear processes in geophysics 2013-01, Vol.20 (3), p.423-428
Main Authors: Singh, R N, Manglik, A
Format: Article
Language:English
Subjects:
Continental dynamics
Crusts
Entropy
Entropy (Information theory)
Geophysics
Heat sources
Heat transfer
Mantle
Mathematical models
Minimization
Nonlinearity
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Summary:Depth distribution of radiogenic heat sources in continental crust is an important parameter that controls its thermal structure as well as the mantle heat flow at the base of continental lithosphere. Various models for the depth distribution of radiogenic heat sources have been proposed. Starting from constant and exponential models based on linear heat flow–heat generation relationship the present-day layered models integrate crustal structure and laboratory measurements of radiogenic heat sources in various exposed rocks representing crustal composition. In the present work, an extended entropy theory formalism is used for estimation of radiogenic heat sources distribution in continental crust based on principle of maximum entropy (POME). The extended entropy principle yields a constant heat generation model if only a constraint given by total radiogenic heat in the crust is used and an exponential form of radiogenic heat sources distribution if an additional constraint in the form of a second moment is used in the minimization of entropy.
ISSN:1607-7946
1023-5809
1607-7946
DOI:10.5194/npg-20-423-2013