Marianne Haseloff

Marianne Haseloff

Postdoctoral Research Associate

Education and academic positions

Since 09/2017: Postdoctoral research associate
Dept. of Earth Sciences and Institute of Mathematics, University of Oxford, Oxford, UK

07/2015 – 09/2017: Postdoctoral research associate
Atmospheric and Oceanic Sciences Program/Geophysical Fluid Dynamics Laboratory, Princeton University, Princeton, USA

07/2015: PhD (Geophysics), Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver, Canada

08/2009: Diplom in physics (MSc equivalent), Humboldt-University Berlin, Germany

Research interests:

The goal of my research is to better understand the physical processes that govern the dynamics of ice sheets and glaciers, and to improve the representation of these processes in large-scale ice sheet models. The ice sheets of Greenland and Antarctica together hold the equivalent of 60 m of sea level increase, and understanding their dynamics is essential for projections of future sea level rise. However, many of the processes governing ice sheet dynamics are insufficiently resolved in large-scale ice sheet models. My research projects focus on identifying the main drivers of ice sheet change and deriving parametrizations of these processes suitable for continental-scale ice sheet models.

Current research project: Two-phase dynamics of temperate ice.

Temperate ice is ubiquitous in glaciers and ice sheets, forming where temperatures in the ice sheet reach the melting point. Further addition of heat to temperate ice (for example through internal deformation or warming surface temperatures), leads to the formation of melt water embedded in the ice matrix. Even though the water content within the ice matrix is typically small (a few percent at most), the presence of water drastically alters the mechanical properties of ice. Moreover, water percolating through the ice to the base of the ice sheet can facilitate sliding of the ice along the bed, leading to increased ice discharge. Despite these important implications for ice sheet dynamics, the physical properties of temperate ice are poorly understood. In collaboration with Richard Katz, Ian Hewitt and experimentalists at Iowa State University, I am investigating the interactions between ice and water to develop a two-phase, thermo-mechanical theory for temperate ice flow.

  • Haseloff, M., Schoof, C., Gagliardini, O. (2018), The role of subtemperate slip in thermally driven ice stream margin migration, The Cryosphere, 12, 2545-2568, https://doi.org/10.5194/tc-12-2545-2018
  • Robel. A.A., Roe, G.H., Haseloff, M. (2018), Response of Marine‐Terminating Glaciers to Forcing: Time Scales, Sensitivities, Instabilities and Stochastic Dynamics, J. Geophys. Res. Earth Surf., 123. https://doi.org/10.1029/2018JF004709
  • Haseloff, M., Sergienko, O. (2018), The effect of buttressing on grounding line dynamics, Journal of Glaciology, 64(245), 417-431, https://doi.org/10.1017/jog.2018.30
  • Haseloff, M., Schoof, C., Gagliardini, O. (2015), A boundary layer model for ice stream margins, J. Fluid Mech., 718, 353-387, https://doi.org/10.1017/jfm.2015.503
  • Schoof, C., Rada, C. A., Wilson, N. J., Flowers, G. E., Haseloff, M. (2014), Oscillatory subglacial drainage in the absence of surface melt, The Cryosphere, 8, 959-976, doi:10.5194/tc-8-959-2014
  • Levermann, A., Albrecht, T., Winkelmann, R., Martin, M.A., Haseloff, M., Joughin, I. (2012), Kinematic first-order calving law implies potential for abrupt ice-shelf retreat, The Cryosphere, 6, 273-286 (2012), doi:10.5194/tc-6-273-2012
  • Martin, M.A., Winkelmann, R., Haseloff, M., Albrecht, T., Bueler, E., Khroulev, C., Levermann, A. (2011), The Potsdam Parallel Ice Sheet Model (PISM-PIK) – Part 2: Dynamic equilibrium simulation of the Antarctic ice sheet, The Cryosphere, 5, 727-740 (2011), doi:10.5194/tc-5-727-2011
  • Winkelmann, R., Martin, M.A., Haseloff, M., Albrecht, T., Bueler E., Khroulev, C., Levermann, A. (2011), The Potsdam Parallel Ice Sheet Model (PISM-PIK) – Part 1: Model description, The Cryosphere, 5, 715-726 (2011), doi:10.5194/tc-5-715-2011
  • Albrecht, T., Martin, M.A., Haseloff, M., Winkelmann, R., Levermann, A. (2011), Parameterization for Subgrid-Scale Motion of Ice-Shelf Calving-Fronts, The Cryosphere, 5, 35-44 (2011), doi:10.5194/tc-5-35-2011.

Theses:

  • Haseloff, M. (2015), Modelling the migration of ice stream margins, PhD thesis, The University of British Columbia, Canada. http://hdl.handle.net/2429/54268
  • Haseloff, M. (2010), Modelling the transition from ice sheet to ice shelf with the Parallel Ice Sheet Model PISM-PIK, diploma (MSc equivalent) thesis, Humboldt-University Berlin, Germany