Core
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\(\mathcal{P}\langle {\dddot{B}_r^2}\rangle\)
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\(1.0\times 10^1\,({\mathrm{nT}}\cdot {\mathrm{year}}^{-3})^{-2}\)
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\(\mathcal{P}\langle {\dddot{B}_{r,n=1,m=0}^2}\rangle\)
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\(3.0\times 10^2\,(\mathrm{nT}\cdot \mathrm{year}^{-3})^{-2}\)
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\(\mathcal{P}\langle {\dddot{B}_{r,n=2,m=0}^2}\rangle\)
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\(1.0\times 10^1\,(\mathrm{nT}\cdot \mathrm{year}^{-3})^{-2}\)
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\(\mathcal{P}\langle {\ddot{B}_r^2}\rangle\)
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\(4.0\times 10^{-2}\,(\mathrm{nT}\cdot \mathrm{year}^{-2})^{-2}\)
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Lithosphere
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\(\mathcal{P}\langle \left| {\mathbf {B}_{n\ge 85}}\right| ^2\rangle\)
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\(2.0\times 10^1\,(\mathrm{nT})^{-2}\)
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Ionosphere
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\(\mathcal{P}\langle \left| {\mathbf {J}_{\mathrm{eq},\mathrm{MLT}:21{-}05}}\right| _2^2\rangle\)
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\(4.0\times 10^7\,(\mathrm{A}\cdot \mathrm{km}^{-1})^{-2}\)
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\(\mathcal{P}\langle \left| {\nabla _s^2\mathbf {J}_{\mathrm{eq},p>0,\mathrm{mid{-}lat}}}\right| _2^2\rangle\)
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\(1.0\times 10^0\,(\mathrm{A}\cdot \mathrm{km}^{-3})^{-2}\)
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Magnetosphere/induced
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\({\mathcal{P}}\langle \left| {\mathbf{p}}_{\mathrm{mag/ind}} \right|_{2}^{2}\rangle\)
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Variable \((\mathrm{nT})^{-2}\)
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\(\mathcal{P}\langle \left| {\mathbf {p}_{\mathrm{ind}\perp \mathrm{core}}}\right| _2^2\rangle\)
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\(\infty \,(\mathrm{nT})^{-2}\)
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