Methods of identification and delimitation of concave terrain features based on ISOK-NMT data

• Autorzy: Oberski T.
• Języki publikacji: EN

Abstrakty

EN

Airborne Laser Scanning (ALS) products are now often used to study the terrain due to their numerous advantages such as relatively low cost and ease of data collection. The ISOK project (pl: Informatyczny System Osłony Kraju – national hazard protection information system) developed elevation data for about 65% of the Polish territory. Parallel to the airborne laser scanning point cloud collection, additional products, such as orthophotomaps, digital terrain models (DTM), and digital surface models (DSM) were created. This resource is not only a reference material for the project, but also a valuable source of the analysis used in various fields of economy and science. Important features of the ISOK-data are the availability and their standardized format based on uniform technical conditions. The article presents the results of an experiment in which an attempt was made to use the digital elevation model with a resolution of 1 m based on airborne laser scanning data to determine concave terrain features using GIS tools. The ISOK-DTM has a height accuracy of 0.15 m for the outdoor areas, which makes it a better representation of small terrain forms than previous products. The research area is located at an undeveloped open ground with comparatively little variation of its shape for a long period. Several methods were tested to classify the terrain shape based of topographic attributes. Those methods led to similar locations of the concave features and further on coincide with results of the pre-analysis. Also, attention was drawn to the selection of the analysis parameters and their influence on the result. The results show the usefulness of ISOK’s DTM for locating field concave terrain shapes.

Słowa kluczowe

EN

DTM; ISOK; Terrain; concave features; GIS

• Wydawca: Wydawnictwo Uniwersytetu Warmińsko-Mazurskiego w Olsztynie
• Czasopismo: Technical Sciences / University of Warmia and Mazury in Olsztyn
• Rocznik: 2016
• Tom: nr 19(1)
• Strony: 59--70
• Opis fizyczny: Bibliogr. 13 poz., rys., wykr.

Twórcy

autor

Oberski T.

• Department of Civil and Environmental Engineering, Division of Geoinformatics Koszalin’s University of Technology

Bibliografia

• BIELSKA A., OBERSKI T. 2014. Wyłączenie spod zabudowy gruntów nadmiernie uwilgotnionych klasyfikowanych za pomocą narzędzi GIS. Infrastruktura i Ekologia Terenów Wiejskich, II(2): 411–421.
• GLIŃSKA-LEWCZUK K. 2011. Mapa hydrograficzna w skali 1:50000, arkusz N-34-77-D Olsztyn. Komentarz do mapy hydrograficznej w skali 1:50000, arkusz N-34-77-D Olsztyn. Główny Urząd Geodezji i Kartografii, Warszawa.
• JENNESS J. 2006. Topographic Position Index (TPI) v. 1.2. http://www.jennessent.com/downloads/TPI–Documentation–online.pdf (access: 25.08.2015).
• KLADZYK A.G. 2013. GIS feature extraction tools in diverse landscapes. Department of Environmental and Water Resources Engineering, University of Texas at Austin. http://www.caee.utexas.edu/prof/maidment/giswr2013/Reports/Kladzyk.pdf (access: 30.12.2015).
• KOZIOŁ K. 2009. Numeryczny model terenu dla wielorozdzielczej/wieloprezentacyjnej bazy danych przestrzennych. Geomatics and Environmental Engineering, 3(1/1): 69–80.
• KURCZYŃSKI Z., BAKUŁA K. 2012. Generation of countrywide reference digital terrain model from airborne laser scannig in isok project. Archiwum Fotogrametrii, Kartografii i Teledetekcji, Warszawa, p. 59–68.
• OBERSKI T., SZCZEPANIAK-KOŁTUN Z. 2013. Określania obszarów lokalnych podtopień na podstawie nmt i bazy hydro. Roczniki Geomatyki, 11[2(59)]: 79–85.
• OBERSKI T., ZARNOWSKI A. 2013. Analiza wpływu rzeźby terenu na kształtowanie krajobrazu przyrodniczego i jego zagospodarowanie. Inżynieria Ekologiczna, 33: 86–95.
• OBERSKI T., ZARNOWSKI A. 2012. Pozyskiwanie naturalnych zbiorników wodnych na podstawie numerycznego modelu rzeźby terenu i narzędzi GIS. Infrastruktura i Ekologia Terenów Wiejskich, 1(3): 151–164.
• SØRENSEN R., ZINKO U., SEIBERT J. 2006. On the calculation of the topographic wetness index: evaluation of different methods based on field observations. Hydrology Earth Systems Science, 10: 101–112.
• UDVIG T. 2015. Use of a Lidar Based Model for Remote Sensing of Ephemeral Wetlands in Anoka County, Minnesota USA. Papers in Resource Analysis, 17: 12.
• URBAŃSKI J. 2012. GIS w badaniach przyrodniczych. http://ocean.ug.edu.pl/~oceju/CentrumGIS/dane/GIS–w–badaniach–przyrodniczych–12–2.pdf (access: 31.08.2015).
• WEISS A. 2001. Topographic position and landforms analysis. Poster Presentation, ESRI User Conference, San Diego, CA.

Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.