1. Economic Geography Part II Interaction Transportation The City, Services and Central Place Theory

2. Spatial Interaction  Nodes: point locations But a set of points may comprise a service area Origins of all people flying out of Lethbridge County Airport Destinations Viewing or listening area for broadcasting  Routes or route segments joining nodes  Flows or volume being moved

3. Why do things move? The Bases for Spatial Interaction  Complementarity Complementary resource endowments  Form utility  Place utility  Transferability Ease of transferance and ability to overcome distance Distance decay and umland

4. Why do things move? The Bases for Spatial Interaction  Intervening Opportunity Complementary resource endowments

5. Bases for Communication  Information genesis Broadcasting irrespective of information demand “too much information”!  Hierarchy of control City size and corporate/government dominance  Distance independence Especially between largest nodes