Hydrogeological aspects of the helicopter borne electromagnetic measurements in the area between Cuxhaven and Bremerhaven, Lower-Saxony, Germany

During the years 2000 and 2001 the area between Cuxhaven and Bremerhaven (Figure 1) was covered by high resolution helicopter borne EM (HEM) measurements (Eberle & Siemon 2002, Gabriel et al. 2003). In this area a complex coastal aquifer system comprising Quaternary sediments and deeply incised Pleistocene subglacial valleys is partly endangered by saltwater intrusions. In order to study the hydrogeology of the region in detail several geophysical and hydrogeological measurements are carried out including e.g. reflexion seismics, SIP-(spectral induced polarisation) and VES-(vertical electrical soundings) measurements, investigation drilling, hydrochemistry, and isotope hydrology (Kessels et al. 2000).