Seismological Research Letters; March 2008; v. 79; no. 2;
p. 163-177; DOI: 10.1785/gssrl.79.2.163
© 2008 Seismological Society of America
Analysis of Building Damage during the 8 October 2005 Earthquake in Pakistan
S. T. Maqsood and
J. Schwarz
Bauhaus Universität Weimar, Germany
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INTRODUCTION
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The strongest earthquake in the history of Pakistan jolted the northern
region at 08:50 local time (03:50 UTC) 8 October 2005. The epicenter of the
earthquake was determined by the U.S. Geological Survey (USGS) to be
34.493°N and 73.629°E. This location is in the northern portion of
Muzaffarabad district. It had a magnitude of 7.6 with a depth of 26 km. The
earthquake caused extensive damage, destruction, and loss of life over a wide
region (almost 30,000-km2) including Muzaffarabad, Mansehra,
Batagram, Bagh, and Poonch (see figure
1). The impact of the main shock was felt as far away as Lahore
(350 km from epicenter). About 90,000 people died, 79,000 were injured, and
more than 3.5 million were rendered homeless. More than 1,200 aftershocks were
recorded through 7 November 2005.
According to government figures, 19,000 children died in the earthquake,
most due to the collapse of school buildings. The earthquake affected more
than 500,000 families. More than 400,000 buildings were damaged. The
destruction of about 7,000 school buildings and several hospitals caused
further difficulties in relief operations and social rehabilitation. Adobe,
stone masonry, concrete block masonry, brick masonry, and timber structures
are the dominant building types in the region. Reinforced concrete frame
structures usually are constructed only in urban areas.
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Figure 1. Epicenter, most affected area and selected seismic recording station.
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This article is the outcome of a field visit made just after the event. The
field visit was supported by the German Task Force for Earthquakes
(GeoForschungsZentrum, Potsdam) and Earthquake Damage Analysis Center (EDAC),
Weimar (Maqsood et al.
2006).
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SEISMOLOGICAL ASPECTS
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Regional Seismic History
Figure 2 shows the past
seismicity in and around Pakistan. There was no major event recorded in the
recent past in the epicentral area before the 8 October 2005 earthquake. But
very high seismic activity was seen after the . . . [Full Text of this Article]
Earthquake Damage Analysis Center (EDAC)
Institute of
Constructive Engineering
Bauhaus-Universität Weimar
Germany
tariq.maqsood@bauing.uni-weimar.de
(S.T.M.)
schwarz@bauing.uni-weimar.de
(J.S.)
Copyright © 2008 by Seismological Society of America