International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XXXIX-B4, 2012
XXII ISPRS Congress, 25 August - 01 September 2012, Melbourne, Australia
3.1 Maps and Imagery of Disaster
Maps help people to understand their environment spatially.
Many maps related disaster provided when disaster occurred
and part of them also prepared as part of disaster risk
reduction, but lack of them socialize to local government or
local people. Toponym is one of the important layers presented
in maps. Besides maps, recently when disaster happened many
satellite images comes for free to be download and it can be
found that name of place is not in correct writing and not
accurate position.
Map prone disaster of Mt. Semeru provided by BNPB then to
be used as one of the maps which use toponym in their disaster
information. Comparison analysis was conducted with
topographic map scale 1:25.000 to extract toponym
information. Toponym from numbers of map sheets to be
processed and built into gazetteer. Then, validated toponym is
presented in Map of Disaster Prone Area of Mt. Semeru as can
be seen in Figure 3.
Feta Kawatan Raman Bencans
Figure 3. Map of Disaster Prone Area of Mt. Semeru with
Geographical Names that have been verified
Field survey of geographical was done in Mt. Semeru to be
compared also with toponym in Google Earth. As can be seen
in Figure 4 there is several areas with incorrect administrative
geographical names.
Figure 4. Image on Google Earth with toponym from Google
and Field Survey
Based on the analysis, GeoNames website (geonames.org) is
the complete gazetteer (Figure 5), even though source of
toponym or name of place is not mentioned clearly. It can be
said that this is not official information, but toponym from this
website is valuable for us in order to understand name and
location of places. Toponym from GeoNames is needs to be
check carefully using the principle of toponym in accuration
position and consistency in writing.
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GeoNames
Figure 5. GeoNames website (geonames.org) provide gazetteer
for the world
3.2 Geospatial Information for Disaster in Web
The development of geospatial information and technology has
provides us with crowded data sources. Geospatial information
can be accessible and downloadable freely. Recently,
BAKOSURTANAL has launched Geospasial Untuk Negeri as
geoportal in which people can see Indonesia contains of basic
and thematic geospatial information. BNPB also has geospatial
website which provide maps and WebGIS, but all of those
website do not yet properly use gazetteer as part of their
website for search or query based on name of place (Figure 6
and Figure 7).
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Figure 6. Geospasial Untuk Negeri (Indonesian Geoportal)
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Figure 7. Geospasial BNPB (National Disaster Agency
website)
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