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Global heat flow trends resolved from multiple geological and geophysical proxies

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Academic year: 2021

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Figure

Figure 1. (a) Global heat flow data set, including now up to 34 500 sites (note uneven sampling and poor coverage in many areas); (b, c) published efforts to extrapolate heat flow using an estimator based on the thermotectonic age and the surface geology (
Figure 2. (Left-hand side) Semivariogram of heat flow data, illustrating the short-scale spatial variability as it does not tend to zero at small distances; note that taking the median value in 1 ◦ × 1 ◦ windows, without further smoothing, does not remove
Figure 3. Terrestrial features used to build-up the observables incorporated in the extrapolation methods (see Table 1 and online supplementary material).
Figure 4. Suggested approaches to associate a heat flow distribution with any target point (see text for details)
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