My interests are in palaeo-glaciology and glacial
geomorphology: investigating how an ice sheet behaves from the landform
signatures it has left behind. The sediments mobilised and landforms
moulded by the flow of an ice sheet allow us to read the history of the
ice flow regimes responsible, and their interactions with past climates
and oceans. In recent years, exceptionally high resolution digital
terrain models of land and the seafloor have revolutionised the way
that we can study glaciated landscapes. I work at a
regional-to-continental scale in both terrestrial and marine
environments, using a variety of topographic and seafloor geophysical
datasets, to analyse glacial landforms and landscapes and determine the
dynamics, stability of and controls upon past ice flow and retreat.
Deglaciation dynamics of the
Fennoscandian Ice Sheet
In the Gulf of Bothnia, a rich and immaculately preserved glacial landform record reveals the flow and collapse of ice in this shallow marine basin. With colleagues at SU and the Geological Survey of Sweden, we are combining geomorphological research with numerical ice flow modelling to investigate palaeo-flow dynamics through the Gulf, and to determine the importance of atmospheric warming, surface melting and iceberg calving in driving ice margin retreat.
In Lake Vättern in south-central Sweden, new geophysical data of the lake floor has enabled us to reconstruct a highly dynamic outlet glacier of the retreating Fennoscandian Ice Sheet, which played a key role in the damming and drainage of the Baltic Ice Lake during the last deglaciation.
This work has been funded by the Geological Survey of Sweden (2013-2014).
East Antarctic Ice Sheet dynamics in
the Ross Sea
i) the role of major East Antarctic outlet glaciers on ice flow and retreat dynamics in the western Ross Sea,
ii) the role of subglacial meltwater in governing grounding zone stability,
iii) the role of topographic banks in governing the stability of pattern of the deglaciating ice sheet.
This work is funded by a Swedish Research Council (Vetenskaprådet) junior research grantExpedition blog: cruise NBP1502 to the western Ross Sea