Spatial Patterns of Narcotic Crime and Its Relationship with The Physical Environment: Chicago Case

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Kırpık E.

AESOP 16th Young Academics Conference: In Search of Well-Being in Liminality: No Longer-Not Yet, İstanbul, Turkey, 5 - 08 April 2022, pp.20

  • Publication Type: Conference Paper / Summary Text
  • City: İstanbul
  • Country: Turkey
  • Page Numbers: pp.20
  • Yıldız Technical University Affiliated: Yes


Although the phenomenon of crime is not a new concept for cities, it is seen that the environment is taken as an important factor in the initiation, continuation and/or cessation of crime, which saves the physical environment from being a passive element where crime is committed. Additionally, the openness of data and its usability in geographic information systems has led to a growing interest in crime analyzes to examine crime patterns and trends in situ.

In this study, with the case study in the city of Chicago, it has been tested that how the narcotic crime tends in the place with other crimes, its displacement over time, its dependency on the place, and relationship with crime-related physical environmental elements such as graffiti, abandoned buildings and abandoned vehicles. The data used in the study, which includes all crimes committed on the street and physical environment elements from 2011 to 2017, was taken from the open data portal of the city of Chicago.

As a result of many exploratory spatial data analyzes, firstly, it has given a result that supports the Crime Pattern Theory, which is that narcotic crime tends to cluster in the space. Secondly, based on the Routine Activity Theory; the hotspot analyzes showed that the crime decreased over time in the city. However, the analyzes also showed that the crime remained stable by decreasing in certain places but homogenized in the rest of the city, that is, some of the crime was distributed in the city. Finally, according to the regression analyzes made with graffiti, abandoned buildings and abandoned vehicles, these elements are not explanatory variables for narcotic crime. However, when tested with all crimes, these physical environmental elements were found to be explanatory variables and all of them were positively related to crime.