Models for the hotspot distribution

Details Models for the hotspot distribution Models for the hotspot distribution

Oct 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990georl..17.1965j&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 17, Oct. 1990, p. 1965-1968.

Mathematics

Probability

12

Earth Surface, Plates (Tectonics), Subduction (Geology), Earth Mantle, Fractals, Mathematical Models

Scientific paper

Published hotspot catalogs all show a hemispheric concentration beyond what can be expected by chance. Cumulative distributions about the center of concentration are described by a power law with a fractal dimension closer to 1 than 2. Random sets of the corresponding sizes do not show this effect. A simple shift of the random sets away from a point would produce distributions similar to those of hotspot sets. The possible relation of the hotspots to the locations of ridges and subduction zones is tested using large sets of randomly-generated points to estimate areas within given distances of the plate boundaries. The probability of finding the observed number of hotspots within 10 deg of the ridges is about what is expected.

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