Publication Date:
2019-12-02
Description:
The aim of this Master Thesis is to reconstruct the glacio-geological history of the
Ekström ice shelf on the basis of subglacial characteristics. This investigation provide
clues to past ice dynamics, which may contribute to the valuation of sea level rise due to
climate change in subsequent studies. The interpretation of these morphologies at the
sea floor was performed with the geophysical methods swath bathymetry, Parasound
and reflection seismics. The investigations were supported by the calculation of the sea
bed roughness at the seismic profiles. The landforms were used to identify advance and
retreat behaviours and phases of still-stand, draw conclusions about the substrate
and compare the findings with other Antarctic ice shelves. Channel structures imply
the presence of meltwater and thus changes in the thermal regime of the glacier base.
The detailed results can contribute to a better understanding of the behaviour and
to more reliable estimates for future responses of the East Antarctic ice shelves to
environmental change.
Repository Name:
EPIC Alfred Wegener Institut
Type:
Thesis
,
notRev
Format:
application/pdf
