A Gravity Approach to Constructing Regional Structures from Interregional Flow Data
Abstract
A cost-based gravity index is derived from interregional flows in a structural gravity model and used to construct a set of regional structures with a variable number of regional units. The approach enables a structural description of the economic geography based on interregional resource flows. It is mainly exemplified with interstate migration data for the U.S., from which a set of macro-regions is constructed and compared with the U.S. Census divisions. A similar study of the six states in the New England division is discussed for comparison, based on inter-county data for migration and commuting.
Keywords
Spatial structure Migration Regional identity Structural gravityJEL Classification
R10 O10Notes
Acknowledgements
I am grateful to Jon P. Knudsen, participants at the 82th International Atlantic Economic Conference, and an anonymous referee, for valuable comments.
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