During the scientific expedition PS115/1 on the research vessel Polarstern in 2018, a geophysical dataset comprising seismic refraction and reflection as well as gravity and magnetic data was acquired at the northern continental margin of Greenland in the vicinity of the Morris Jesup Rise. Favourable ice conditions enabled shipborne data acquisition for the first time in this region. This thesis analyses the new geophysical data in order to characterise the continental margin and to better constrain its tectonic evolution. Seismic refraction data are used to infer a crustal-scale 2D P-wave velocity model based on travel time modelling, which is supplemented by the processing and interpretation of a nearby seismic reflection profile. The velocity model and the migrated seismic section are combined with results obtained from gravity and magnetic modelling to develop geodynamic interpretation.
Sedimentary and crustal structure of Greenland's northern continental margin in transition to the Morris Jesup Rise
Andreas Brotzer (GPI)