Deriving urban mass concentrations using TanDEM-X and Sentinel-2 data for the assessment of morphological polycentricity
| Autor: | Bastian Heider, Michael Wurm, Ines Standfuss, Hannes Taubenböck, Marlene Kühnl, Stefan Siedentop, Christian Geiss |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
3D city structures
business.industry urban spatial structure 0211 other engineering and technologies Distribution (economics) 021107 urban & regional planning 02 engineering and technology Deutsches Fernerkundungsdatenzentrum Urban structure Geography urban morphology Polycentricity TanDEM-X Sentinel-2 business Cartography 021101 geological & geomatics engineering |
| Zdroj: | IGARSS |
| Popis: | Polycentricity refers to urban regions with more than one center. These additional (sub-) centers, e.g. spatial concentrations of jobs, are characteristic for the transformation of monocentric towards polycentric urban patterns. Frequently assessed with socioeconomic data, the phenomenon is also reflected in the built morphology of urban landscapes. Only recently, a methodology for large-scale morphological characterization of built-up structures in urban areas relying on TanDEM-X and Sentinel-2 data has been introduced. Thus, a new way to investigate morphologic polycentricity in and among cities is provided. Relying on this approach, we derive the distribution of urban mass concentrations in four city regions. We identify high urban mass concentrations - proxies for (sub-) centers - using a threshold approach. A comparison between the studied regions reveals that only one city tends to have a polycentric urban structure. Our study highlights a new and promising possibility to study the urban morphologic development at global scales. |
| Databáze: | OpenAIRE |
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