NDLI: Evaluation of the potential of friction surface analysis in modelling hurricane wind damage in an urban environment

Content Provider	Springer Nature Link
Author	Knight, Robin I. Khalid, Fakhar
Copyright Year	2014
Abstract	This research considered the use of friction surface analysis as a means of modelling the vulnerability of an urban topography to hurricane wind effects (wind speed force and windborne debris). Isotropic and anisotropic surfaces of Miami, Florida, USA, were derived from tax building age, and LIDAR building height data, to act as a test area for the methodology. The isotropic surface modelled the key vulnerabilities of individual buildings within the study area, whilst the anisotropic surface considered the varying effects due to wind directionality. The results from the model indicate the logical effect of most damage occurring on surfaces that directly face the oncoming wind, and this is only minimised on those surfaces that are sheltered by larger buildings. This directionality effect on results is validated by damage records for actual hurricane events that are recorded in the literature, as well as the patterns observed on Central Miami landmarks after Hurricane Wilma in 2005. These results represent a simplistic GIS approximation of the phenomena in a specific urban environment, which do not take into account more complex factors linked to urban ‘roughness’ and turbulence effects. To model these complexities would require a multidisciplinary approach involving meteorologists and engineers. This research, however, indicates that the vulnerability surface produced by the friction surface analysis has potential as a tool to assess hurricane impact in a selected area which could be of use in implementing mitigation initiatives, disaster recovery planning and assessing financial loss. This represents a deterministic approach, but calibration of the results against building exceedance probability damage curves suggests that this methodology could be correlated with stochastic catastrophe model methodologies. The deterministic nature of the methodology means that it can be used at any location, but the derived friction layers must be carefully considered on a locality-by-locality basis.
Starting Page	891
Ending Page	911
Page Count	21
File Format	PDF
ISSN	0921030X
Journal	Natural Hazards
Volume Number	76
Issue Number	2
e-ISSN	15730840
Language	English
Publisher	Springer Netherlands
Publisher Date	2014-11-18
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Hurricane Urban Vulnerability Friction surface analysis GIS LIDAR Natural Hazards Hydrogeology Geophysics/Geodesy Geotechnical Engineering & Applied Earth Sciences Civil Engineering Environmental Management
Content Type	Text
Resource Type	Article
Subject	Atmospheric Science Water Science and Technology

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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