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Gravity Model of Migration

The gravity model of migration explains the volume of movement between two places as proportional to the product of their populations (masses) and inversely proportional to the distance separating them, by direct analogy to Newton's law of universal gravitation. Formalized for intercity movement by George Kingsley Zipf in 1946 and embedded in regional science by Walter Isard, it is the workhorse model of human geography for predicting migration, commuting, and other spatial-interaction flows.

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Gravity Model of Migration and Spatial Interaction

Record tassonomico del metodo · regression-model / human-geography

Zipf, G. K. (1946). The P1 P2 / D hypothesis: On the intercity movement of persons. American Sociological Review, 11(6), 677–686. · DOI 10.2307/2087063
Isard, W. (1960). Methods of Regional Analysis: An Introduction to Regional Science. MIT Press. · ISBN 9780262090032

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Often confused withAccessibility Analysismachine-suggested · Relational suggestion, not evidence.Often confused withCentral Place Analysismachine-suggested · Relational suggestion, not evidence.See alsoLocation Quotientmachine-suggested · Relational suggestion, not evidence.Same method familySpatial Interaction Modelmachine-suggested · Relational suggestion, not evidence.