Bathymetry Bathymetry is the measurement of the seafloor topography. Unlike the land surface, the sea bed surface cannot be measured directly via airborne optical methods (e.g. radar). It requires an echo [...] large research vessels. Only about 10% of the global seafloor has been mapped with high-resolution bathymetry by now. And for the polar regions this percentage is still significantly smaller. At the AWI h [...] high-resolution bathymetric maps. Together with high-resolution seismics and sediment cores , the bathymetry is used for the interpretation of glacial processes. Ice sheet scours on the Lomonossov Ridge in