Group

Recent group picture
Recent group picture.
Haseloff image

Marianne Haseloff (PI/group lead)

The goal of my research is to understand the physical processes that govern the dynamics of ice sheets and glaciers, and to improve the representation of these processes in Earth system 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. I use both analytical and numerical methods to solve the mathematical problems that arise in the description of these processes. Biographical sketch and contact information here.

Postdocs

Photo of Tim Hill

Tim Hill

Tim has been a postdoc in the group since September 2026. He did his PhD (Earth Sciences) at Simon Fraser University with Gwenn Flowers, his MSc (Applied Mathematics) with Christine Dow at the University of Waterloo, and has a BSc Mathematical Physics from the University of Waterloo. At UW–Madison, he works on a Physical and human dynamics around melting ice and sea level rise in a warming world, funded by UW’s Research Forward initiative.

Photo of Logan Mann

Logan Mann

Logan has been a postdoc in the group since July 2026. He obtained his PhD (Engineering) from Dartmouth College, working with Colin Meyer, and his BSc (Earth and Atmospheric Science) from Georgia Tech. At UW–Madison, Logan is working on an Arête-funded project to improve estimates of sliding-law parameters in ice-sheet models via time-dependent inversions.

Graduate students

Jaela image

Jaela Allen

Jaela joined the group in 2025 as a PhD student. She has a BSc in Geology with a minor in Mathematics from Miami University, Ohio. She works on temperate ice and its role in ice stream dynamics.

Kit Ross photo

Kathryn Ross

Kit joined the group in 2026 as a MSc student with a BA in Physics with Minors in Geoscience, Biology, and Mathematics from the University of Montana. Kit’s project investigates ice-ocean interactions that lead to the formation of subshelf melt terraces.

Picture of Alex Spies

Alexandra Spies

Alex joined the group in 2026 as a PhD student. She has a BSc in Physics and Maths with a certificate in Slavic Studies from UW–Madison. She works on subglacial hydrology on soft beds, funded through NSF project 2520980.

Carson

Carson Moellering

Carson started his PhD in 2026 and is co-advised with Luke Zoet. He works on subglacial hydrology on soft beds, funded through NSF project 2520980. Prior to joining UW–Madison, Carson received his BSc in physics from Bates College.

Undergraduate students

  • Zoe Loschke
  • Varun Parekh
  • Brett Nuthals

Group Alumni

Kai Hu

Kai Hu

Postdoc 2023-2025

Kai joined the group as a postdoctoral researcher studying the dynamics of the Lake Superior Lobe of the Laurentide ice sheet, which was a lake-terminating glacier subject to the same marine ice-sheet instability as modern day glaciers in the West Antarctic Ice Sheet. His project used a numerical ice sheet model to understand the chronology of retreat and re-advance of this lake-terminating glacier, which can be inferred from geophysical surveys. He went on to a postdoc with Natalya Gomez at McGill University.

Campbell

Campbell Dunn

MSc student 2023-2025

Campbell’s MSc thesis investigated subglacial hydrology on deformable beds, specifically Ng channels.

Undergraduates

  • Bethany Jarvis, 2025-2026 (joined as LASER student and continued after the program ended)
  • Alexandra Spies, 2025-2026 (now graduate student in the group)