Dataset Information

A global reference model of Curie-point depths based on EMAG2.

ABSTRACT: In this paper, we use a robust inversion algorithm, which we have tested in many regional studies, to obtain the first global model of Curie-point depth (GCDM) from magnetic anomaly inversion based on fractal magnetization. Statistically, the oceanic Curie depth mean is smaller than the continental one, but continental Curie depths are almost bimodal, showing shallow Curie points in some old cratons. Oceanic Curie depths show modifications by hydrothermal circulations in young oceanic lithosphere and thermal perturbations in old oceanic lithosphere. Oceanic Curie depths also show strong dependence on the spreading rate along active spreading centers. Curie depths and heat flow are correlated, following optimal theoretical curves of average thermal conductivities K?=?~2.0?W(m°C)^-1 for the ocean and K?=?~2.5?W(m°C)^-1 for the continent. The calculated heat flow from Curie depths and large-interval gridding of measured heat flow all indicate that the global heat flow average is about 70.0?mW/m², leading to a global heat loss ranging from ~34.6 to 36.6 TW.

SUBMITTER: Li CF

PROVIDER: S-EPMC5359667 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature

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A global reference model of Curie-point depths based on EMAG2.

Li Chun-Feng CF Lu Yu Y Wang Jian J

Scientific reports 20170321

In this paper, we use a robust inversion algorithm, which we have tested in many regional studies, to obtain the first global model of Curie-point depth (GCDM) from magnetic anomaly inversion based on fractal magnetization. Statistically, the oceanic Curie depth mean is smaller than the continental one, but continental Curie depths are almost bimodal, showing shallow Curie points in some old cratons. Oceanic Curie depths show modifications by hydrothermal circulations in young oceanic lithospher ...[more]

PMID: 28322332

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Dataset Information

A global reference model of Curie-point depths based on EMAG2.

Publications

A global reference model of Curie-point depths based on EMAG2.

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