University of Otago



Home
Research
Publications
What's New
About Us
Contributors
Current Students
Photo Gallery
Data Repository
Contact Us
 

 

Dr Sarah Mager

BSc (hons), MSc, PhD (Otago)

Paradise_Harbour_07-Feb-09_124

My broad research interests are in the field of glaciology, covering both understanding contemporary processes in Antarctica, as well as glaciers and climate change within the contemporary and ancient New Zealand setting.

My research goals are to contribute to our understanding the behaviour and dynamics of glaciers. At present, relatively little empirical work in done in the field of understanding the anisotropic behaviour of ice, particularly the formation and influence that basal ice has on glacier dynamics. My specialisation is to use geochemistry as a tool to understanding the role of liquid water in sub-zero conditions and its subsequent influence on glacier behaviour. Such work has bearing on our understanding of cold ice, and its behaviour in large scale systems like ice sheets, where ice is usually modelled as isotropic due to the dearth of empirical work on the behaviour of basal ice.

I am also interested reconstructing Quaternary landscapes of southern New Zealand and comparison with contemporary glacial conditions. This project looks at the influence of glacial lakes and their influence and preservation in the sedimentary and landform signatures. This work focuses on the current expansion of glacial lakes at the margins of contemporary New Zealand glaciers and their role as analogues for understanding the collapse of large glaciers during the Quaternary. This projects aims to further our understanding of glaciers and climate change, in both current and ancient contexts. My work will look at how subsurface radar techniques can inform geomorphological expressions of glaciation to refine our understanding of retreat of the Tasman Glacier.

Publications

Mager, S. and Fitzsimons, S. 2007. Formation of glaciolacustrine Late Pleistocene end moraines in the Tasman Valley, New Zealand. Quaternary Science Reviews 26 (5-6), 743-758. doi:10.1016/j.quatscirev. 2006.11.012 [abstract]

Theses and Dissertation

Mager, S. 2005. A compositional approach to understanding the formation of basal ice in cold, Antarctic glaciers. Unpublished PhD thesis, in Geography and Chemistry, at the University of Otago, Dunedin, New Zealand. 220 pp. [abstract]

Mager, S. 1999. An environmental reconstruction of the Tekapo formation using facies analysis. Unpublished MSc thesis, in Geography, at the University of Otago, Dunedin, New Zealand. 145 pp. [abstract]

Mager, S. 1996. Sediment transport in dry-based glaciers : an assessment of sedimentary signatures imprinted by glacial transportation. Unpublished BSc (hons) dissertation, in Geography, at the University of Otago, Dunedin, New Zealand. 78 pp.

Conference Presentations and Posters 

Mager, S., Fitzsimons, S.J., Frew, R.D. and Samyn, D. 2007. Stable Isotope Composition of the Basal Ice from Taylor Glacier, Southern Victoria Land, Antarctica, in the 10th ISAES X Online Proceedings, in Antarctica: A Keystone in a Changing World - Online Proceedings of the 10th ISAES X, edited by A.K. Cooper and C.R. Raymond et al., USGS Open-File Report 2007-xxx, Extended Abstract yyy, 1-4. [PDF 50kb]

Fitzsimons, S.J., S.M. Mager, R. Lorrain, and S. Sleewaegen (2007) Evidence of ice-substrate interactions beneath the Wright Lower Glacier, South Victoria Land, Antarctica, in the 10th ISAES X Online Proceedings, in Antarctica: A Keystone in a Changing World - Online Proceedings of the 10th ISAES X, edited by A.K. Cooper and C.R. Raymond et al., USGS Open-File Report 2007-xxx, Extended Abstract yyy, 1-4. 

Mager, S., Fitzsimons, S., Frew, R. 2006. Ice Composition Evidence for the Presence of Liquid Water at the Base of Rhone and Taylor Glaciers, Antarctica. Poster Presentation. The Second SCAR Open Science Conference “Antarctica in the Earth System” (SCAR XXIX) in Hobart, Australia in July, 2006. [PDF 820kb]

Mager, S., Fitzsimons, S. and Frew, R. 2005. Accretion of Marine Ice in Southern McMurdo Sound. Poster Presentation. International Symposium on Sea Ice, International Glaciological Society in Dunedin, New Zealand in December, 2005. [PDF 1416kb].

Mager, S., Fitzsimons, S., Frew, R. 2003. Comparison of the composition and origin of basal ice in cold and polythermal glaciers. Presented at Seventh International Symposium on Antarctic Glaciology (ISAG-7) in Milano, Italy in August, 2003. [abstract]

Mager, S., Fitzsimons, S. 2002. Composition and origin of basal ice in cold and polythermal glaciers. Poster Presentation. Ice in the Environment, 16th International Symposium on Ice, International Association of Hydraulic Engineering and Research (IAHR) in Dunedin in December 2002 [PDF 628kb]

Mager, S., Fitzsimons, S. 2001. Sediment transport in dry-based glaciers: an assessment of the sedimentary signatures imprinted by glacial modification. Presented at 2001 Geography A Spatial Odyssey, Joint Conference of the New Zealand Geographical Society and the Institute of Australian Geographers in Dunedin, in February 2001. [abstract]
 

Contact 

Office: Richardson Bldg, 5C18
Phone: (+64) 3 479-4222
Fax: (+64) 3 479-9037
E-mail: sarah.mager@stonebow.otago.ac.nz

© 2009 Department of Geography, University of Otago, Dunedin, New Zealand