Scientific Quarterly Journal of Geosciences

Scientific Quarterly Journal of Geosciences

Developing a Model to Assess Seismic Instability against Earthquake using Fuzzy & IHPW and GIS

Document Type : Original Research Paper

Authors
K. Habibi 1
M. Behzadfar 2
A. Meshkini 3
S. Nazari 4
1 1Assistant Professor, Department of Urban Planning, Faculty of Engineering, University of Kurdistan, Sanandaj, Iran
2 Professor, Department of Urban Design, Faculty of Architecture, University of Science and Technology, Tehran, Iran
3 Assistant Professor, Department of Geography and Urban Planning, Faculty of Humanities, University of Tarbiat Modares, Tehran, Iran
4 4 M.Sc., Department of Urban Planning, Faculty of Engineering, University of Tehran, Tehran, Iran
10.22071/gsj.2013.53839
Abstract
Due to its geographic position and located on the World earthquake belt; Iran is always under threat from earthquakes and several shakes are recorded every year all over the country. The most recent earthquake with 6.8 degree magnitude on the Richter scale hit the city of Bam in 2003 and caused large losses of human life and infrastructure. The 2003 Bam earthquake, with more than 30,000 casualties and 10,000 injuries, was the most Destructive earthquake in the current century in Iran. We aim to recognize the main reasons causing these deterioration problems. To this end, we first conceptualize thirteen physical-spatial factors. These factors are analyzed using fuzzy logic and IHPW (Inverse Hierarchy Process Weight) within Geographical Information System. We also attempt to identify the Correlation coefficient analyses between urban vulnerability and damage using Fuzzy logic and GIS. In statistics, correlation and dependence are any of a broad class of statistical relationships between two or more random variables or observed data values. With respect to the covariance between two variables (urban vulnerability map and damage post earthquake) the correlation coefficient is calculated 0.59.  The results of the model as applied to the structures of the city of Bam illustrate that a fuzzy approach is a basic tool that can be used to identify urban vulnerability and damage post earthquake incident. Its application to the problem assists in unifying relevant theories and practices.
Keywords
Earthquake
vulnerability
Bam
Geographical information system (GIS)
Modeling
Fuzzy logic
IHPW Model
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Scientific Quarterly Journal of Geosciences
Volume 22, Issue 87
Autumn 2013
Pages 83-92