From Theory to Metrics: A Spatial Evaluation of the 15-Minute City Concept Using Geomarketing and Geographic Information Systems (Gis) In Ankara

Date

2025-11

Author

Seven, Saygın

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

41
views

0
downloads

Cite This

Cities are increasingly adopting proximity-based models and low-carbon urban forms to reduce car dependence and enhance everyday accessibility. A prominent framework within this agenda is the 15-minute city, yet empirical applications often rely on residence-centered buffers and overlook the role of transit nodes. This thesis addresses this gap by proposing an urban rail transit station centered framework to examine how urban rail stations function as multi-purpose service hubs in advancing the 15-minute city in Ankara. The study seeks to develop an assessment method to use the 15-minute city measures by using a special Geomarketing web application. Hence, this research is exploratory and innovative in assessing the concept of 15-minute city regarding urban rail transit stations, as well as developing an assessment method. Focusing on Ankara, the urban rail transit stations are selected as the case study sites. Four indicators of the 15-minute city, (density, proximity, diversity and ubiquity) are assessed by using the Geomarketing web application developed by Başarsoft. The assessment method is conducted in a two-phase pilot studies. Phase 1 assesses the 15-minute city concept by focusing on 11 stations, while Phase 2 assesses this concept on 54 stations. Catchment zones are delineated using 5-, 10-, and 15-minute pedestrian networks, enabling analysis of density, proximity, functional diversity (Shannon Index), and ubiquity through an accessibility framework. Data sources include address/building units, TÜİK neighborhood demographics, and Başarsoft POIs, with web application co-development emerging as a practical outcome of addressing data and workflow challenges. Findings reveal clear differentiation among stations: transfer-oriented M2 stations underperform in walkable proximity due to limited residential presence, while centrally located mixed-land use stations (e.g., Kızılay, Kolej, Demirtepe) score highest. Although station catchment zones show high population densities, functional diversity remains limited. Recommendations emphasize enhancing “first-five-minutes” amenities, promoting mixed-land use development near single-function stations, and using station-centered diagnostics to guide future investments.

Subject Keywords

15-Minute City, Chrono Urbanism, Urban Rail Transit Station-Centered Framework, Geomarketing, Ankara

URI

https://hdl.handle.net/11511/118282

Collections

Graduate School of Natural and Applied Sciences, Thesis