fig05.htm

Figure 5. Latitude dependence of S for various geomagnetic field regimes. Intervals of frequent reversals: (a) 10-0 Ma; (b) 45-15 Ma; (c) 554-365 Ma; (d) averages for intervals (a)-(c). Intervals of predominant normal polarity: (e) 115-85 Ma; (f) 1040-1000, 1200-1150, and 1620-1580 Ma. Intervals of predominant reversed polarity: (g) 300-255 Ma; (h) 980-910 and 1500-1400 Ma; (i) Averages for stable field states (e)-(h). Circles, upside-down triangles, triangles, and squares are, respectively, IPR le 0.2, 0.2 < IPR < 0.4, 0.4 le IPR < 0.6, and IPR ge 0.6. Open, Solid, and circled symbols correspond to the number of determinations of less than 5, 5-10, and more than 10. Vertical bars are standard deviations.


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