Urban Dynamics: Data and Images
Temporal Urban Mapping - Spatial Analysis
Statistical Summaries
Under Construction
Spatial Patterns and Trends
Visual analysis of the database reveals the development over time of spatial
patterns. Distinct urban areas merge into a continuous urban corridor as
development continues to expand the boundaries of towns and cities. The
principal transportation data layer clearly demonstrates the influence that
the transportation infrastructure (roads, railroads, and seaports) has exerted
on population development. The hydrography layer contributes to historical
understanding by revealing the loss of navigable rivers due to siltation, the
development of reservoirs for water supplies, and the changing shoreline
resulting from harbor development and salt pond formation.
Historical Observations
Under Construction
Demographic Studies
Census data was plotted over time to develop this graph of population change in the San Francisco/Sacramento region and the Baltimore/Washington region. The sharp upward swing of the graph reflects the rapid increase in population in both of these regions after World War II on into the 1990s.
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