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International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B7. Istanbul 2004
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pre-earthquake post-earthquake
EVegetation Eimpemous | Oimperious II (Collapsed buildings) O Soil
Figure 5. Land cover of Adapazari before and after the
earthquake
The area of vegetation, impervious and soil remained
essentially unchanged after the earthquake but the impervious
class comprised two very different components: collapsed
buildings and other impervious surfaces. To display this change
using the V-I-S model the collapsed building class was added to
the soil class, as it was no longer functionally urban (figure 6).
The land cover change vector indicates in a standardised way
the direction and the magnitude of land cover change that has
occurred.
Impervious
100 ©,
Pre-éarthquake
Post-earth uake
2
Vegetation 0 . ME
100-44 0
CN
Figure 6. Trend of Vegetation-Impervious-Soil model from pre-
earthquake to post-earthquake.
The Kocaeli (Izmit) earthquake caused catastrophic and
dramatic changes in the land cover of Adapazari. In this study,
using classification of pre-earthquake and post-earthquake
SPOT HRV images, collapsed building areas were identified.
The land cover change direction vector was determined by
means of the V-I-S model using data from the classified images.
It was concluded that SPOT HRV XI data and the V-I-S model
could be used to provide a standardised means of representing
earthquake-induced land cover change in an urban area
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