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New perspectives to save cultural heritage
Altan, M. Orhan

CIPA 2003 XIX"' International Symposium, 30 September - 04 October, 2003, Antalya, Turkey
In the previous example, photogrammetric compilation
was based on images taken more or less by chance: pro
fessor Kostka has taken metric photographs at the time he
spent in the region with an expedition. Historical aerial
photographs are present in most countries since the
1950s. For country-wide mapping, regular aerial photog
raphy is carried out periodically every couple of years,
and stored in archives. In addition to aerial photographs,
historical country-wide or regional maps can be useful.
Similar historical maps and photographs have been of
great benefit to re-naturalization of the national park
Neusiedler See (Lake Neusiedler). Neusiedler See is
situated in a basin without outlet. Of special interest in
the National Park are the meadowlands created through
use for traditional haymaking, the remaining pastureland,
and the unique, frequently evaporating saltwater pants
with their varying salinity levels. These biotopes are
internationally famous and important for their many
nesting or migrating wading bird species. However, from
the beginning of the 20 th century wide spread artificial
draining took place, withdrawing the surface waters from
that area very effectively and also lowering the water
table in waterlogged soils. The water surface has been
reduced by 75%.
As mentioned above, historical maps and photographs
have been greatly beneficial to re-naturalization; never
theless, they do not provide sufficient information on
terrain elevations. Therefore a high-quality digital terrain
model (DTM) has been generated in applying the new
technology of airborne laser scanning. Figure 4 is a color-
coded representation of this DTM. The areas up to a
certain level are colored blue so to suggest coverage by
water. For more details see (Herzig et al., 2001).
This project is a first step in establishing a National Park
information system. It is thought to be open to various
sets of data, thus providing for a multidisciplinary man
agement and analysis tool, to assist in multiple criteria
spatial decision making and conflict resolution (scientific,
political), as well as for monitoring the past and present
state and predicting future developments of the valuable
but vulnerable ecosystem of the National Park.
Technical Statements: Applying historical maps and
aerial photographs allows for monitoring changes in the
past. In hydrologically susceptible areas, precise digital
terrain models are also of great importance; nowadays,
such models can be derived from airborne laser scanner
Financial Statement: For adequate management of
national parks, detailed and many-sided information and
documentation are inevitable, to be stored and accessed
via spatial information systems. To provide for this,
considerable financing is inevitable.
Figure 4: Color coded terrain model derived from laser
scanner data.
A spatial information system, such as the one mentioned
at the end of the last section, is under development for the
archeological excavations in Ephesos (Klotz, 2003).
Ephesos, on the west coast of Asia Minor in Turkey, used
to be one of the most important cities of the Roman Em
pire. Here, Austrian archaeologists have been carrying
out research and excavation for more than a hundred
A digital orthophoto derived from images 1:15 000 serves
as spatial reference co-ordinate system, the orthophoto
providing users of the archaeological information system
with easy orientation. The orthophoto carries markers
linked with further information in the system. Fig. 5
shows a detail of the orthophoto with some vector data
overlaid, representing the surroundings of the ancient