Rivera, F;
Rossetto, T;
Twigg, J;
(2019)
Modelling the temporal dynamics of seismic exposure in Santiago, Chile.
In:
Proceedings of the 2nd International Conference of Natural Hazards and Infrastructure (ICONHIC).
Innovation Center on Natural Hazards and Infrastructure: Chania, Greece.
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Abstract
Among the three components of seismic risk—hazard, exposure and vulnerability—exposure is the least studied. This paper presents the preliminary results of a study on the temporal dynamics of seismic exposure in the last 25 years for the city of Santiago, Chile. Exposure models with a census-block resolution are built for two different epochs—1992 and 2017—and compared. Results show that the city has grown both horizontally (i.e., expanding) and vertically (i.e., densifying) in the study period. Also, that reinforced concrete is becoming the preferred building material, going from 3% to 17% of the total buildings in the city. Considering the constant update of seismic design regulations in Chile, the formality of construction, the high compliance to codes, and the constant evolution of building practice in Chile, these results imply that the city is evolving into a seismically safer state. This research is the first step towards a time-dependent seismic risk assessment for the city of Santiago. This tool will be used to further explore how urban planning decisions affect the evolution of risk in time.
| Type: | Proceedings paper |
|---|---|
| Title: | Modelling the temporal dynamics of seismic exposure in Santiago, Chile |
| Event: | 2nd International Conference of Natural Hazards and Infrastructure (ICONHIC) |
| Location: | Chania, Greece |
| Dates: | 23 June 2019 - 26 June 2019 |
| Open access status: | An open access version is available from UCL Discovery |
| Publisher version: | https://iconhic.com/2019/2019/10/id-38-f-rivera-t-... |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | exposure modelling, seismic risk, spatiotemporal dynamics, urban growth |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10093366 |
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