Assessing Patterns of Urban Transmutation Through 3D Geographical Modelling and Using Historical Micro-Datasets

Santos, Teresa; Rodrigues, António Manuel; Ramalhete, Filipa

doi:10.1007/978-3-319-21404-7_3

Cited by 2 publications

(2 citation statements)

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“…Terrain geology classification was based on Almeida (1986). Geolocated information about abandoned buildings in the city of Lisbon originating from Santos et al (2015) was also added. From Dias (2013), a 2.5D landfill map of Lisbon was attached to the input dataset.…”

Section: Input Datamentioning

confidence: 99%

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3D City Models as a Visual Support Tool for the Analysis of Buildings Seismic Vulnerability: The Case of Lisbon

Redweik

Teves-Costa

Vilas-Boas³

et al. 2017

Int J Disaster Risk Sci

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3D city models associate a database of a city to a rigorous geospatial representation that is close to the visible reality by combining appearance, geometry, and semantics. As such, these models may include tools that convey attribute analysis, not only at the statistical level but also in terms of visual appearance of the objects, thus allowing the generation of new knowledge about a phenomenon or its effects. Lisbon is a city with a moderate level of seismic risk, and has been hit in the past by strong earthquakes. Several seismic vulnerability studies of buildings have been carried out in Lisbon. These studies generate different scenarios that consider the magnitude and source location of potential earthquakes. The results of these studies were presented as maps obtained from crossing information contained in 2D layers and presented in a GIS environment. In the present study a seismic vulnerability assessment of Lisbon's buildings held in 2D is extended to the third dimension, which refines the resolution and the set of parameters and explores the gains of spatial analysis in 3D representations. The numerous parameters that contribute to assess seismic vulnerability of buildings may be analyzed individually or simultaneously as well as in multiple seismic scenarios. Although covering all residential buildings in Lisbon, the application of the 3D city model is demonstrated with more detail in three pilot areas.

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Section: Input Datamentioning

confidence: 99%

“…The volumetric density and the volumetric heterogeneity are indicators of the built mass in a district. Lower density values indicate urban plans where public spaces are significantly present and lower heterogeneity values reveal more homogeneous buildings in the district area (Santos et al 2015).…”

Section: Deeper Analysis In Pilot Areasmentioning

confidence: 99%