Modeled Sediment Mass-Balance and Movement Underneath Ice Sheets

Ian du Bois, Physics

Faculty Mentor: Dr. Byron Parizek

              My research project is mathematically modeling the sediment flow and creation underneath an ice sheet (glacier).  This was done by first creating an ice sheet in MATLAB using the Shallow-Ice approximation (S.I.A).  Once this was completed, the next step was to create a sediment model using the equations derived by Pollard and DeConto (2003) and Pollard and DeConto (2007, in press). These equations were taken and cast into Finite Element Form  (this method utilizes calculus, as well as the computational power of computers).  Once the coding was complete, the simulations could be run using theoretical data.  The next step will be to include real data as well as an ice-stream and ice-shelf dynamics.

                 This research is important because ice sheets/shelves affect global climate change and sea level change.  My research is particularly important with respect to the temporal and spatial evolution of lubricated ice streams (fast-flowing grounded ice due to melt water lubrication) as well the grounding-line dynamics of an ice sheet.

Personal Statement

              This research has taught me what life is like as a theoretical researcher.  I was paid through a grant by the National Science Foundation, and saw first hand from beginning to end just how a grant is written and received.   I have also learned about computer programming and troubleshooting a program.  Finally, I have made multiple professional contacts and relationships which will help me in my future endeavors as a student, researcher and professional.