International Archives of Photograminetry and Remote Sensing. Vol. XXXII Part 7C2, UNISPACE III, Vienna. 1999
112
I5PR5
UNISPACE 111 - ISPRS/EARSeL Workshop on
“Remote Sensing for the Detection, Monitoring
and Mitigation of Natural Disasters”
2:30-5:30 pm, 22 July 1999, VIC Room B
Vienna, Austria
Warsaw, the European Space Agency delivered, free of charge,
the ERS scenes covering the total extent of the Polish part of the
Oder River. These images, after digital processing, were used
for assessing the extent of flooding along the Oder River, by
combining them with the digital land use data base created within
the Corine project, winch is based on Landsat TM images. On
the ERS images, the extent of water was interpreted and
determined in digital form. Later, these results were overlaid on
the Corine data base. This procedure allowed a detennination of
the particular classes of land cover which were under water. In
addition to maps indicating the extent of flooding, it was possible
to determine the areas covered by the water within the
administrative boundaries at different levels, that is, from the
local lev el (so called gmina) through the regional level (so called
voivodship) to the national level. These results and data
constitute the only homogeneous information created during the
flooding disaster in Poland.
The most important role of remote methods is their application in
the spatial information systems created for flood prediction,
prevention and management. Currently, there is a lack of spatial
information systems both in the particular countries and at an
international level. To solve this problem the Institute of
Geodesy and Cartography in Warsaw organized a workshop
focused on this issue. Representatives of research institutes from
the Czech Republic, Germany and the Netherlands were invited.
This workshop was organized on 1st and 2nd September 1997 in
Warsaw'. The invited experts represented both the institutions
dealing with photograminetry and remote sensing and institutions
responsible for water management.
The main aim of this workshop was to exchange information
regarding the actions performed during the flooding in the
respective countries; and to discuss the necessary steps that
should be undertaken to establish a homogeneous information
system for the Oder River catclunent, which can be used for
flood prevention and forecasting. As a result of this workshop, it
was stated that the proposed system should be based on a
homogeneous geodetic reference system in wdiich all terrain
information collected by terrestrial, photogrammetric and remote
sensing methods should be included. In addition to information
on terrain topography and surface coverage, meteorological and
hydrological data should be included. All these data can be used
in the development of simulation models for forecasting flooding
scenarios.
During the workshop it was decided to create a joint research
project focused on investigations and studies which should result
in:
(a) the most suitable and convenient methodology
for integrating, updating and analysing
information from different sources
(b) creating a powerful data base as a core for the
water management system.
At the beginning of investigations, the required parameters and
technical needs should be determined in cooperation with
institutions responsible for water management, hydrotechnical
construction, as well as the forest and agriculture specialists.
The project will be carried out in several steps, commencing with
the evaluation of existing data types and sources. Special
attention will be paid to data processing and data integration
w'ithin the information system. The proposed system will be
checked and evaluated on two test areas along the Oder River.
One area will be selected between the Czech Repub he and
Poland, while the second area wall be on tire part of the Oder
River on the boundary-’ between Germany and Poland. The results
of this evaluation will be used for correction and further
improvement of the proposed methods, techniques and strategies.
The proposed project will also include training and transfer of
knowledge to potential users. In the proposed project, the
experience and results of similar projects undertaken in the
Netherlands will be taken into consideration. Prof.Dr. Gottfried
Konecnv from the University of Hannover in Germany w ; as
selected as a coordinator of this project.
THE ROLE OF REMOTE SENSING IN THE FORESTS’
FIRE DISASTERS
Forest fires are to the most common disasters which occur on all
continents, and the result in huge damage to the natural
environment. For example, in Australia there are annually large
foiest fires which affect hundred of thousands of hectares of
forest, and are also very dangerous for tow'ns and settlements. In
Europe there are large forest fires in southern France and in Italy.
In Poland there are many forest fires each year. In 1992, more
than 9,300 forest fires affecting 37,000 ha were registered. The
main reason for the forest fires are the w'eather conditions and the
influence of industries which cause environmentally detrimental
conditions for forest stands.
Remote sensing techniques and GIS systems can be used for:
- prediction of the forest fire risk,
- monitoring forest fires and their spatial
extent,
- inventory of the areas affected by fire and
assessment of losses,
- monitoring of recultivation and reforestation
efforts.
Surface temperature is very important in the prediction of the
forest fires. Surface temperature information can be extracted
from both remote sensing and meteorological satellite data. For
example, the data collected in the medium- and far-infrared part
of the electromagnetic spectrum can be used for determining tire
surface temperature and soil moisture. Data collected by NOAA
satellites can be used for determining surface temperature and its
changes in consecutive days, as well as evaluation of soil
moisture. This information is a valuable indicator of tire forest