C019
Ice Fracture Processes: Observations and Modelling
Session ID#: 246995
Session Description:
Ice fracture plays a fundamental role in the evolution of glaciers, ice sheets, and ice shelves. Fractures can act as pre-existing weaknesses that promote calving events; accumulated damage can alter large-scale ice rheology; crevasses can modify surface mass balance and ice dynamics; hydrofracture allows water and energy to enter the englacial and subglacial environment; and rifts play a fundamental role in the breakup of ice shelves. Recent studies have used cutting-edge Earth observation, field, laboratory, and numerical modelling techniques to better understand the distribution, controls, and impacts of ice fracture across the cryosphere, and explore how these processes will evolve under a changing climate. This session aims to unify work across different methods and geographic regions to better understand the fundamental physical processes and consequences of ice fracture. We invite contributions on any aspect of surface and basal crevasses, hydrofracture, ice-shelf rifting, calving, and their interactions with wider glaciological processes.
Index Terms:
0720 Glaciers [CRYOSPHERE]
0726 Ice sheets [CRYOSPHERE]
0728 Ice shelves [CRYOSPHERE]
0774 Dynamics [CRYOSPHERE]
Primary Convener: Thomas R Chudley, Durham University, Department of Geography, Durham, United Kingdom
Conveners: Riley Culberg, Cornell University, Department of Earth and Atmospheric Sciences, Ithaca, United States, Ravindra Duddu, Vanderbilt-Civil and Envr Eng, Nashville, TN, United States and Jessica Z Mejia, Syracuse University, Department of Earth and Environmental Sciences, Syracuse, United States
Student/Early Career Convener: Naureen Khan, University at Buffalo, Department of Geology, Buffalo, NY, United States
Vulnerability of Firn to Hydrofracture: Poromechanics Modeling (Invited) (1853897)
Yue Meng, Purdue University, West Lafayette, IN, United States, Riley Culberg, Cornell University, Department of Earth and Atmospheric Sciences, Ithaca, United States and Ching-Yao Lai, Stanford University, Department of Geophysics, Stanford, United States
Recent Variability in Fracture Characteristics and Ice Flow of Thwaites Ice Shelf (Invited) (1855013)
Shujie Wang1, Patrick Alexander2, Richard B Alley3, Zhengrui Huang4, Byron R Parizek3, Amanda Willet5 and Sridhar Anandakrishnan3, (1)Pennsylvania State University, Geography, Earth and Environmental Systems Institute, ICDS, University Park, PA, United States, (2)Columbia University, Lamont-Doherty Earth Observatory, New York, United States, (3)Pennsylvania State University, Department of Geosciences and Earth and Environmental Systems Institute, University Park, United States, (4)The Pennsylvania State University, Geography, University Park, United States, (5)Pennsylvania State University, Department of Geosciences, University Park, United States
Empirical Constraints on Ice-Cliff Calving (1864048)
Caroline Needell, MIT-WHOI Joint Program in Oceanography/Applied Ocean Science & Engineering, Cambridge, MA, United States, Catherine C Walker, Woods Hole Oceanographic Institution, Applied Ocean Physics & Engineering, Woods Hole, MA, United States and Jeremy N Bassis, University of Michigan, Climate and Space Sciences and Engineering, Ann Arbor, United States
High-resolution mapping of pan-Antarctic ice shelf fractures: algorithms and datasets (1870504)
Zhengrui Huang1, Shujie Wang2, Nishant Tiwari3, Richard B Alley4 and Byron R Parizek4, (1)The Pennsylvania State University, Geography, University Park, United States, (2)Pennsylvania State University, Geography, Earth and Environmental Systems Institute, ICDS, University Park, PA, United States, (3)Pennsylvania State University, Department of Geography, Earth and Environmental Systems Institute, University Park, United States, (4)Pennsylvania State University, Department of Geosciences and Earth and Environmental Systems Institute, University Park, United States
Experimental observations of flowing and freezing through a cold fracture (1900492)
Prof. Xiaojing Fu, California Institute of Technology, Pasadena, United States, Aman Eujayl, California Institute of Technology, Mechanical and Civil Engineering, Pasadena, United States, Nathan Jones, Caltech, Department of Mechanical and Civil Engineering, Pasadena, United States and Benzhong Zhao, McMaster University, Hamilton, Canada
Locating Icequakes in 3D to Determine Firn Aquifer Influence on Crevasse Propagation Depths on Helheim Glacier, Greenland (1930166)
Kniya Duncan1, Kristin Poinar1, Eric A Sandvol2, Beata M Csatho3 and Lucas Zoet4, (1)University at Buffalo, Department of Earth Science, Buffalo, United States, (2)University at Buffalo, Department of Earth Sciences, Buffalo, United States, (3)University at Buffalo, Department of Earth Sciences, Buffalo, NY, United States, (4)University of Wisconsin-Madison, Department of Geoscience, Madison, WI, United States
Diurnal Evolution of Ice Quakes on Milne Ice Shelf, Nunavut, Canada, from Low to High Frequency Reveals Flexure and Fracture Cycle (1951393)
Jui Chun Freya Chen1, Sunyoung Park1, Derek Mueller2, Yulia Antropova2, Jérémie Bonneau3, Anna J Crawford4, Owen Kirkham2, Biko Leclair_Brideau5, Andrew David Mullen6, Oscar Sepulveda Steiner7 and Douglas R MacAyeal1, (1)University of Chicago, Department of the Geophysical Sciences, Chicago, United States, (2)Carleton University, Department of Geography and Environmental Studies, Ottawa, ON, Canada, (3)University of British Columbia, Civil Engineering, Vancouver, BC, Canada, (4)University of Stirling, Biological and Environmental Sciences, Stirling, United Kingdom, (5)Centre de Recherche sur les Milieux Insulaires et Maritimes, Tamatave, Madagascar, (6)Cornell University, Ithaca, United States, (7)University of California, Davis, Civil and Environmental Engineering, Davis, United States
Evaluating large-scale fracture dynamics on Shirase Glacier with Sentinel-1 derived products (1961799)
Jack Logan1, Joanna Millstein2, Matthew Siegfried2 and Trystan Surawy Stepney3, (1)Colorado School of Mines, Department of Geophysics, Golden, CO, United States, (2)Colorado School of Mines, Department of Geophysics, Golden, United States, (3)University of Leeds, School of Earth and Environment, Leeds, United Kingdom
From Ice Cores to Ice Quakes: Understanding How Ice Type Variability Controls Fracture Propagation in a Marine-Based Ice Shelf in Antarctica. (1975453)
Thomas M Mitchell1, Emma Pearce2, Oliver Marsh3, Alex Brisbourne2 and Jukka Tuhkuri4, (1)University College London, Department of Earth Sciences, London, United Kingdom, (2)NERC British Antarctic Survey, Cambridge, United Kingdom, (3)British Antarctic Survey, Cambridge, United Kingdom, (4)Aalto University, Aalto, Finland
On Rifts and Fractures: Flexural-Gravity Wave Interaction with Complex Ice Shelf Morphologies (1978894)
Peter Nekrasov, University of Chicago, Committee on Computational and Applied Mathematics, Chicago, IL, United States, Jeremy Hoskins, University of Chicago, Committee on Computational and Applied Mathematics, Chicago, United States and Douglas R MacAyeal, University of Chicago, Department of the Geophysical Sciences, Chicago, United States
