scalinglawsofthesizedistributionofmonogeneticvolcanoes火山的单粒度分布的标度律
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scalinglawsofthesizedistributionofmonogeneticvolcanoes火山的单粒度分布的标度律
Scaling laws of the size distribution of monogenetic volcanoes within the Michoacan-Guanajuato Volcanic Field (Mexico),Michoacan-Guanajuato Volcanic Field,1040 monogenetic volcanoes Mainly basaltic cinder cones Used size of m-volcano defined by basal diameter 1 or very few magma pulses Rivera and Cocos plate subduction Transmexican Volcanic Belt (TMVB) Largest intra continental volcanic arc Estimated morphometric parameters (height, diameter base and crater, and volume) Gathered information from topo maps and measurements in the field,Similar power-law to Gutenberg-Richter Respect to size-distribution Log10N(sizeWco) = a b log10Wco b: rate of occurrence between small/large volcanoes N: # volcanoes with diameter greater than Wco (1.33km) a = 2.98, b = 5.02, Wco 1.33 km Self-organized criticality phenomenon Monogenetic fields distributed as fractal in size Formula can be applied to future volcanoes Assess hazard B-paramater directly related to monogenetic volcanic activity Size distribution does not occur randomly,Conclusions,Gutenberg-Richter Law,The number of earthquakes of magnitude M is proportional to 10-bM Look at the graph (all the earthquakes in 1995) red line gives the Gutenberg-Richter prediction with b = 1. The value of b seems to vary from area to area, but worldwide it seems to be around b=1.,