Abstract
In the present paper an outline is given of the actual use of computers to represent hydrochemical data at the Geological Survey of Denmark. Special emphasis is directed to the description of the different types of output.
Highlights
Since about 1930, ground-water analyses have been systematically registered in a file at the Geological Survey of Denmark (DGU)
The majority of the analyses have been collected from a number of commercial analytical laboratories in Denmark, while part of the analyses have been performed at the Survey
In most cases it is necessary to supplement the file by new representative analyses to obtain acceptable maps. This updating is essential for the future use of the file for other purposes because the new analyses will increase the representativity of the ground-water file in general
Summary
Since about 1930, ground-water analyses have been systematically registered in a file at the Geological Survey of Denmark (DGU). In most cases it is necessary to supplement the file by new representative analyses to obtain acceptable maps This updating is essential for the future use of the file for other purposes because the new analyses will increase the representativity of the ground-water file in general. Another hydrochemical file has been established at DGU, during the last 20 years or so. The ground-water file as well as the surface-water file were manually updated and stored in traditional archives, but about 1973 DGU started data processing of the two files.
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