Abstract
Abstract. The part of the Czech Republic – West Bohemia is well known for mining activities, different types of raw materials have been extracted from mines near Jáchymov, Sokolov and other sites since medieval times till today. There are original maps of some sites, as well there is effort of some geologists to find and map relics of mining activities (such as digs visible in terrain) by land survey. The quality of these available maps is unfortunately questionable – due to its age or used methods. Our aim was to find resource useful for searching for these sites, than to use field survey to confirm our findings. We used available digital terrain model (DTM) based on airborne laser scanning (ALS) technology to map relics of mining activities in West Bohemia. The Czech Office for Surveying, Mapping and Cadastre started in 2008 project for terrain mapping using the ALS method. The aim of mapping was to get authentic and detailed DTM of the Czech Republic. About 2/3 of area is currently covered by the DTM based on ALS, this year the mapping should be complete. The dataset is characterised by the density of 1–2 points/m2 and the standard deviation in altitude of model points is up to 30 cm (in forested areas). We had DTM in form of shaded surface for one third of the Czech Republic. The shaded surface enables to highlight terrain break lines, which is suitable for archaeological research. Terrain modifications caused by human activity are characterized by terrain break lines, local tops or pits, which do not fit to local geomorphology. Visual image interpretation of the dataset is in the process.
Highlights
Our research group has been interested in using airborne laser scanning for searching for archaeological sites such as abandoned settlements (Faltýnová, Pavelka, 2011), documentation of already known sites (Faltýnová et al, 2013) and using terrestrial laser scanning for mapping objects in area of cultural heritage protection (Pavelka et al, 2010)
During visual prospection of available airborne laser scanning (ALS) dataset we found amount of remains of mining activities and we focused on potential of the dataset for documentation of historic mining activities
Soon there will be available ALS dataset and detailed digital terrain model (DTM) based on this dataset for the entire area of the Czech Republic and the aim of this paper is to show its potential for documentation of old mining activities in forested areas on a case study in region Jáchymov
Summary
Our research group has been interested in using airborne laser scanning for searching for archaeological sites such as abandoned settlements (Faltýnová, Pavelka, 2011), documentation of already known sites (Faltýnová et al, 2013) and using terrestrial laser scanning for mapping objects in area of cultural heritage protection (Pavelka et al, 2010). History of mining activities in the area of the Czech Republic is described in detail in (Majer, 2004) and (Jirásek, 2010). In the vicinity of Jáchymov there were silverfields exploited since 16th century (Majer, 2004). We have chosen this locality for the case study. Soon there will be available ALS dataset and detailed DTM based on this dataset for the entire area of the Czech Republic and the aim of this paper is to show its potential for documentation of old mining activities in forested areas on a case study in region Jáchymov. There are original maps of the sites, which were used as well
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