GIS IN THE CZECH GEOLOGICAL SURVEY (CGU)
R. TOMAS, Z. KREJČI
Czech Geological Survey (CGU)
Klarov 3, 11821 Praha 1, CZECH REPUBLIC
Phone: +420/2/24002289 Fax.: +420/2/57320438
E-mail: tomas
ABSTRACT
The Czech Geological Survey is a state organization governed by the Ministry of the Environment. GIS department was established in 1990. The department consists of two units, one located in Prague the other in Brno and together there are 13 members employed. The main role of GIS department is to develop and maintain the information system in the CGS.
The main task which we are working on is the transition of the edition of geological and other environmental thematic maps (12) in the scale 1:50 000 into digital form. The system of digital map production is based on geological maps because other thematic maps, such as hydrological, pedological or engineering geological, are more or less derived from geological maps. Digitalization of 214 sheets of geological maps that cover the whole country was finished at the end of last year.
There are three versions of digital geological maps:
In order to produce united geological map of the whole country new database of unified geological legend for all sheets of maps has been created. Vectorization of other thematic maps of the edition has also started (hydrological and pedological) and it will be carried out step by step using digital geological data (Version 2). There were several objectives that our GIS had to fulfill:
At the same time, the GIS department provides also technical support (digitalization, digital production, offset-printing etc.) for projects ”Geological Mapping of the Czech Republic in the scale 1:25 000”, ”Geological Map of the Czech Republic in the scale 1: 500 000 ”and many others.
Software that is used for data handling in the GIS department is Microstation 95 (Bentley) – graphical environment, Oracle 7.3 – data warehouse, MGE modules (GIS Office – Intergraph) – GIS and printing (IPLOT, Map Finisher) tools.