DOI: 10.5593/SGEM2014/B22/S9.082


K. Pavelka, M. Faltynova, J.Reznicek
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-11-7 / ISSN 1314-2704, June 19-25, 2014, Book 2, Vol. 2, 653-660 pp

Airborne laser scanning (ALS) is a new progressive method for topographic mapping that began in the 1990’s. ALS has experienced a boom in the last ten years. In the Czech Republic, the general mapping of the whole territory using the ALS method was finished on July 2013. It began in 2009 for the main reason of creating a better digital terrain model (DTM) for better orthophoto production. The ALS data seems to be an appropriate tool for the documentation or detection of historical mining activity often together with archaeological sites on a larger scale; unfortunately the ALS data is generally too expensive to be commonly used for these purposes only. In our research we try to use ALS data acquired by a public service (Czech Office for Surveying, Mapping and Cadastre) for mapping purposes. This data has, in general, lower density than expensive custom-made data, but they can be borrowed for research purposes. The DTM distributed as a TIFF file in a shaded relief form has been used as well as visual image interpretation and topographical maps. Using a shaded surface with a resolution of 1m, we are able to descry objects with sizes from about 10m. Our research is focused on forested areas on the borders of the Czech Republic. In our case project, the historical mining area near Jachymov city on the western border of the Czech Republic was investigated. In the city neighborhood in forested mountain terrain, there are still visible traces of historical mining activity. Our results are the thematical mapping of historical mining activity together with terrain research and by searching in the archives.

Keywords: mining, Jáchymov, ALS, historical object documentation, silver