GEOG 571
Intelligence Analysis, Cultural Geography, and Homeland Security

1.4 Space

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Space is the primary concept used in geography. To define it briefly, it is “an areal extent on the earth's surface, in and around which all humans exist and their activities occur” (Fellmann et al., 2013, p. 487). Thrift (2009) posits an admittedly rough typology of space—with the caveat that space is far more complex than this typology suggests—that consists of empirical space, flow space, image space, and place space.

While flow space, image space, and place space are important, empirical space is perhaps the most fundamental form of space. Empirical space is the measurable, volumetric construction of space that we invoke when we measure distances between points on a map, estimate how much paint we need to cover the walls of a room, or what size truck we should rent to haul our possessions to a new home.

Conceptually, empirical space enables us to talk about the spatial distribution of phenomena in the world. In human geography, this means that we are generally concerned with the distribution of people, but we may also be concerned with resources, human activity, beliefs or ideas, businesses, and so on. We can think of spatial distribution as having three qualities: density, concentration, and pattern.

Density is the frequency with which something occurs in space; measured in terms of how many things (e.g., people, houses, trees, etc.) appear per unit of area (e.g., square miles, square kilometers, acres, etc.).

The figure shows two squares of the same size. The square on the left (labeled “a”) contains 20 gray triangles. The square on the right (labeled “b”) contains 5 gray triangles.
Fig. 1.2: Density. The two boxes represent the same area, but differ with regard to the number of triangles within that area. Box a. has a higher density of triangles than box b.
Credit: Cristopher Livecchi

Example

New York City has a population density of roughly 27,755 people per square mile, while Minneapolis has a population density of roughly 7,956 people per square mile; thus New York City has a greater population density than Minneapolis.

Concentration is the extent of a feature's spread over space. Things can be close together (clustered) or far apart (dispersed).

The figure shows two squares of the same size, each with ten green circles inside it. The circles in the box on the left (labeled “a”) appear to be distributed evenly within the box. In the box on the right (labeled “b”), there is one cluster of three circles and a second cluster of seven circles.
Fig. 1.3: Concentration. The two boxes contain the same number of circles but the circles in circles in box a. are relatively evenly dispersed, while those in box b. coalesce in two distinct clusters.
Credit: Cristopher Livecchi

Finally, pattern is the arrangement of objects in space. Patterns can be regular (geometric) or irregular.

The figure shows two square boxes. The box on the left (labeled “Portland”) shows a gridded street pattern. The box on the right (labeled Rome) shows a varied and inconsistent street pattern, with sections of gridded streets surrounding a core with an irregular plan.
Fig 1.4: One square mile of street plans in Portland, Oregon and Rome, Italy.
Credit: Maps captured from ArcGIS Online

Example

Compare sections of the street plans for Portland, Oregon, United States, and Rome, Italy. Although not perfectly regular, we can easily characterize sections of Portland as following a grid pattern. Rome, by contrast, appears to be a mix of canted grids on the periphery and irregular and meandering streets in the center. The consistency of Portland’s street plan reflects its more recent creation; the mixed approach in Rome reflects several centuries of changing urban planning practices.

Read:

Thrift, N. (2003). Space: The fundamental stuff of geography. In S. Holloway, S. P. Rice, and G. Valentine (Eds.), Key concepts in geography (pp. 95-107). Sage.

Note: Registered students can access the readings in Canvas by clicking on the Library Resources link.


References:

Fellmann, J. D., Bjelland, M. D., Montello, D. R., Getis, A., and Getis, J. (2013). Human geography: Landscapes of human activities (12th ed.). McGraw Hill.