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Mapa geomorfologiczna Narwiańskiego Parku Narodowego wraz z otuliną w skali 1:25000

Wołk-Musiał E., Gatkowska M.

Teledetekcja Środowiska

2011

T. 45

40--50

As GIS is becoming more and more popular and available for its users it finds new implementation in many fields of knowledge and areas of life and business. It is now used in government, research Institutes, Universities and by private companies. Geographic Information System stand by remote sensing is more often used in monitoring and researching Environment. Testing GIS and remote sensing to actualize and preparing maps gave very good effects. That was the reason for using this solution for shape researching and creating geomorphological maps. The purpose of research was to create detailed geomorphological map of Narew National Park and its buffer zone in scale 1:25 000 using remote sensing (spectroscopy images), GIS programs, available maps and fi eld research carried out in the National Park. Narew National Park is located in Podlaskie Voivodeship, in North-Eastern Poland, traversed by the Narew River. The total area of the Park is 73.5 square kilometres of which only 20.57 km² is state-owned. Narew National Park was created in 1996. The area covered by the park is the Upper Narew Valley, a very swampy area. The methodology of map preparation was composed from 3 stages: Stage 1 – introductory geomorphologic sketch Stage 2 – preparing geomorphologic map in scale 1:25000 Stage 3 – Composition of map – preparing for printing The methodology of research didn’t include stereographic images. The alternative solution was interpretation of mosaic of spectroscopy images putted on DTM with 10 times superiority. Superiority was essential because height differences on the research area are rather small (only 50 m between the highest and the lowest point). The interpretation of boundaries between forms was carried out on DTM products, which were: hypsometric map, slopes and shaded relief. New solution was also the usage of color infrared images which was until this research used only in investigating plants and their diseases and also in hydrology. Interesting solution was the development of photointerpretaion key in which 3-D images were used (generated from DTM). This was great opportunity to visualize shape and spatial relation between geomorphologic forms. It was also very helpful in stating the origin of the forms. What is more authors examined new form of presenting geomorphologic content. The impression of mallable picture was achieved by putting geomorphological map on the image of slopes, generated from DTM. After the research few conclusions were made. 1. Color infrared images are very useful in relief exploration, mainly because: convex form, in which water table is deeper, are brighter on the satellite image than concave forms, in which water table is lower, emphasis of the shadow is very useful for distinguishing excavation, the absorption of infra-red radiation by water caused that every water body is very well seen, for example water in Narew riverbed, oxbow lake and other lakes. 2. DTM and maps which can be generated from it can replace topographic map and long and expensive terrain studies. 3. GIS offers programs which are useful not only in map preparation but also in the process of its composition. Literature studies and presented research lead to the statement that relief of researched area was formed in the close of Wolstonian Stage (in Polish: Zlodowacenie Środkowopolskie) and it was denudated in latest time of Pleistocene and Holocene.