C. Harris and E. Ullman

C. Harris and E. Ullman
Megan Kairiss
Chauncy Harris
● 1914-2003
● Born in Utah
● Received a B.A. from Brigham Young
University in 1933
Graduated as Valedictorian
● Rhodes Scholar
● Oxford University
Edward Ullman
● 1912-1976
● University of Chicago, University
of Washington
● Economist for the United States Maritime
● Research professor at Sapienza University of
Multiple Nuclei Theory
● Developed in the 1945’s
● Harris and Ullman made the argument that
the “city's downtown core” was losing its
importance in relation to the rest of the
● A cities structure is made up of more than
one node, or center in which the cities
people and activities revolve around.
Let’s Compare!
In contrast to the Concentric and Zone
Models, both of which involve a single
center, this theory argues that multiple
centers of urban activity and sociology arise
as a result of ethnic, cultural, business,
educational, and other influences.
Multiple Nuclei Theory
Example: Consider the greater New Haven
area. The center of New Haven is dominated
by a large university, while Bridgeport is
built around a port, and North Haven is a
focus of light industry. Other nuclei exist
within the region, centered around
shopping, recreation, and ethnic
Multiple Nuclei Theory
Multiple Nuclei Theory: Dallas
APHG Concept
Chapter 13: Urban Patterns
● Where are people distributed within urban
● Remember, you can compare this model to
the Concentric and Zone models of urban
"Multiple Nuclei Model - Chauncy Dennison
Harris." Chauncy Dennison Harris. N.p., n.d. Web. 23 Sept. 2013.
"Urban Geography Models." About.com Geography. N.p., n.d. Web. 23 Sept. 2013.

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