The intensity of possible contacts with markets. The so-called Harris market potential uses bilateral distances to weight surrounding locations' GDP: MPHarris, i=∑jGDPjdistijA more sophisticated version of Harris's market potential uses road travel times for lorries as weights, instead of great circle distances:MPTraveltime, i=∑jGDPjtraveltimeijSee Breinlich (2006) J. Econ. Geog. 6, 5.
Subjects: Earth Sciences and Geography.