Absolute and Relative gravity Measurements in Qaqortoq (Greenland) in August 2007

This report contains the results of absolute and relative gravity measurements carried out in Qaqortoq (Greenland) in August 2007 with the absolute gravimeter FG5#216 and the spring gravimeter Scintrex CG5 (S/N021210010).

A new absolute gravity site has been established. The vertical gravity gradient was also measured at the absolute gravity site with the spring gravimeter. The gravity tie between the absolute gravity site and the 88204 marker of the national gravity net has been measured. The other market 88111 could not be connected as it does not exist anymore due to the extension of the harbor. Instead, we established two new points: one on the first step of the old church and the other one on a big boulder close to the church.

The spring gravimeter Scintrex was left at the station for continuous measurements. One month of the data collected after the absolute gravity campaign has been analyzed to extract the observed tidal parameters. They have been used to correct the absolute gravity measurements for the Earth body tides and from the gravitational attraction and elastic loading due to the ocean tides.