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Intraurban Spatial Organization Technology and urban form John Borchart’s Evolutionary Epochs Sail-Wagon (1790-1830)

Urban Geography: Urban Pattern and Structure. Intraurban Spatial Organization Technology and urban form John Borchart’s Evolutionary Epochs Sail-Wagon (1790-1830) Iron Horse (1830-1870) Steel-Rail (1870-1920) Auto-Air-Amenity (1920-1970) High-tech (1970-?).

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Intraurban Spatial Organization Technology and urban form John Borchart’s Evolutionary Epochs Sail-Wagon (1790-1830)

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  1. Urban Geography: Urban Pattern and Structure • Intraurban Spatial Organization • Technology and urban form • John Borchart’s Evolutionary Epochs • Sail-Wagon (1790-1830) • Iron Horse (1830-1870) • Steel-Rail (1870-1920) • Auto-Air-Amenity (1920-1970) • High-tech (1970-?)

  2. Urban Geography: Urbanization and Location Clarke Urban Growth Model • output of model run on Santa Barbara • Green = Current Urban • Light Blue = Predicted Urban • Royal Blue = Excluded • Yellow = Roads • Red = Other

  3. Urban Geography: Urban Pattern and Structure Delivered Price Distance • Central Place Theory • Centrality • Threshold: min. population for normal profits • Range: distance consumer is willing to travel to purchase product. Demand Demand Distance Price

  4. Urban Geography: Urban Pattern and Structure • Central Place Theory (cont.) • Excess Profits Spatial Competition, Equilibrium • Central place hierarchy, ordering, nesting Threshold Range

  5. Urban Geography: Urban Pattern and Structure • Central Place Theory (cont.) • Assumptions: • Uniform spatial distribution of population/income • Isotropic transport surface • Consumers patronize nearest store • No excess profits (range=threshold) • Hexagonal trade areas of central place theory

  6. Urban Geography: Urban Pattern and Structure Spatial Competition:

  7. Urban Geography: Urban Pattern and Structure

  8. Urban Geography: Urban Pattern and Structure

  9. Urban Geography: Urban Pattern and Structure • Central Place Theory (cont.) • Relax Assumptions: • Population/income variation • Transport surface • Consumer behavior • Profits

  10. Urban Geography: Urban Pattern and Structure • Central Place Theory (cont.) • Application to retail and settlement patterns. • Do cities of similar size have approximately equal spacing? • Encarta...

  11. Urban Geography: Urban Pattern and Structure • Functional structure • CBD, central city, suburb • Urban Ecology: Classic Models • Concentric Zone: Burgess (1920s) • Sector Model: Hoyt (1930s) • Multiple Nuclei: Harris and Ulman (1940s)

  12. Urban Geography: Urban Pattern and Structure

  13. Urban Geography: Urban Pattern and Structure • Economic Base and the Base Multiplier • Basic and non-basic sector • Defining the base multiplier • Example: Raytheon

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