Previous glaciological activities relating to hydropower in Johan Dahl Land, South Greenland

This report provides an overview of the glaciological data and results obtained by the Geological Survey of Denmark and Greenland (GEUS, formerly GGU) in Johan Dahl Land, South Greenland during the observational period from 1977-1983 and from modelling work following this. The report contains no additional work; it is solely intended as an overview of previous glaciological activities by GEUS in the area. The present report relies primarily on the concluding report published (in Danish) by GGU at the termination of the survey in 1983, namely Clement (1983). However, all available reports and publications have been evaluated with regard to the information they contained on the subject of the present report.

The purpose of the survey in 1977-1983 was primarily to acquire data material that could substantiate an evaluation of the importance of the glacial conditions for a possible hydropower production from the Nordbosø basin. The survey was not concluded due to sufficient data and adequate knowledge of the area, but due to lack of appropriation and a change of interest in regional basins to smaller, so-called local basins for the production of hydropower. It was concluded that unresolved problems in Johan Dahl Land still remained at the end of the survey and that sufficiently long time series for a realistic evaluation of the area’s potential for hydropower had not been attained.