C011
Breaking Points: Rifting, Calving, and Icebergs
Session ID#: 161282
Session Description:
Fractures in glacier ice that lead to iceberg calving exert an important control on mass loss and dynamic change. Full-thickness fractures, known as rifts, can mechanically weaken ice shelves even if they do not directly lead to iceberg calving. Iceberg calving is a critical component of ice-ocean interactions, regulating the stability and dynamics of glacier termini, yet it remains a poorly understood process. The decay of icebergs produced through calving affects the physical and biogeochemical properties of both local and far-field ocean water masses, and can influence the larger climate system. Studies targeting the process of fracture, calving, and iceberg transport can help evolve our understanding of ice mechanics, the role of icebergs and calving in the climate system, and the relationship between calving and glacier dynamics. We invite contributions to this session that advance community understanding of rifting, calving, and iceberg science. We welcome presentations from all relevant methodologies and across all spatial scales from continental-scale to the examination of microstructure.
Index Terms:
0732 Icebergs [CRYOSPHERE]
0774 Dynamics [CRYOSPHERE]
0799 General or miscellaneous [CRYOSPHERE]
4540 Ice mechanics and air/sea/ice exchange processes [OCEANOGRAPHY: PHYSICAL]
Primary Convener: Joanna D Millstein, Massachusetts Institute of Technology, Cambridge, MA, United States; Woods Hole Oceanographic Institution, Woods Hole, United States
Conveners: Ellyn M Enderlin, Boise State University, Department of Geosciences, Boise, ID, United States, Karen E Alley, University of Manitoba, Department of Environment and Geography, Winnipeg, MB, Canada and Catherine Walker, Woods Hole Oceanographic Institution, Applied Ocean Physics & Engineering, Woods Hole, MA, United States
Student/Early Career Convener: Joanna D Millstein, Dartmouth College, Hanover, United States
The Role of Ocean Currents in Breaking Up a Tabular Iceberg (Invited) (1046730)
Alexander Huth1, Alistair Adcroft1 and Olga V Sergienko2, (1)Princeton University, Program in Atmospheric and Oceanic Sciences, Princeton, United States, (2)Princeton University, Program in Atmospheric and Oceanic Sciences, Princeton, NJ, United States
Constraining the Conditions Under Which Ice Fractures on Antarctic Ice Shelves Using Satellite Observations (1074336)
Sarah Wells-Moran, Wellesley College, Wellesley, MA, United States, Meghana Ranganathan, Massachusetts Institute of Technology, Department of Earth, Atmospheric and Planetary Sciences, Cambridge, United States and Brent Minchew, Massachusetts Institute of Technology, Department of Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States
Advanced continuum damage models for simulating ice shelf fracture (1092343)
Ravindra Duddu1, Alexander Huth2, Theo Clayton3, Emilio Martinez-Paneda3, Benjamin Eaton Smith4 and Martin J Siegert3, (1)Vanderbilt University, Civil and Environmental Engineering, Nashville, United States, (2)Applied Physics Laboratory University of Washington, Seattle, WA, United States, (3)Imperial College London, London, United Kingdom, (4)University of Washington, Seattle, WA, United States
Bragg scattering of surface gravity waves by periodic “roll” structure on Arctic ice shelves (1095397)
Peter Nekrasov, University of Chicago, Computational and Applied Mathematics, Chicago, United States, Yuri Konovalov, Financial University under the Government of the Russian Federation, Moscow, Russia and Douglas R MacAyeal, University of Chicago, Department of Geophysical Science, Chicago, IL, United States
Ice Shelf Vertical Temperature Profile can Substantially Impact Basal Crevasse Stability (1112962)
Niall Coffey1, Ching-Yao Lai2, Yongji Wang2 and Fairuz Ishraque3, (1)Princeton University, Program in Atmospheric and Oceanic Sciences, Princeton, NJ, United States, (2)Princeton University, Princeton, United States, (3)Princeton University, Department of Geosciences, Princeton, United States
Experimental Investigations of Ice Mélange and Floating Granular Materials (1114947)
Nandish Vora1, Kavinda Nissanka1, Marc Guasch2, Joshua Mendez Harper3, Alexander Robel4, Jason M Amundson5 and Justin C Burton2, (1)Emory University, Atlanta, United States, (2)Emory University, Physics, Atlanta, GA, United States, (3)University of Oregon, Eugene, OR, United States, (4)Harvard University, Cambridge, United States, (5)University of Alaska Southeast, Juneau, AK, United States
Application of machine learning techniques for tracking evolution of the Ross Ice Shelf rift system (1118504)
Siobhan Light, University of Maryland College Park, College Park, MD, United States; NOAA Geophysical Fluid Dynamics Laboratory, Princeton, United States, Olga V Sergienko, Princeton University, Program in Atmospheric and Oceanic Sciences, Princeton, NJ, United States and John P Krasting, Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States
Time-dependent Strain-rate Fields Forecast Rift Propagation: Case Study on the Brunt Ice Shelf, Antarctica (1123396)
Joanna D Millstein, Massachusetts Institute of Technology, Cambridge, MA, United States; Woods Hole Oceanographic Institution, Woods Hole, United States, Brent Minchew, Massachusetts Institute of Technology, Department of Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States and Bryan V Riel, Zhejiang University, School of Earth Sciences, Hangzhou, China
Cracking the Case: Fluid Flow Limits the Speed of the Largest Locally-Observed Rifting Event (1131791)
Stephanie Olinger1, Bradley Paul Lipovsky2 and Marine Denolle2, (1)Harvard University, Earth and Planetary Sciences, Cambridge, MA, United States, (2)University of Washington, Department of Earth and Space Sciences, Seattle, United States
The Limits of Control (1136805)
Martin Forbes, University of Otago, School of Surveying, Dunedin, New Zealand and Christina L Hulbe, Portland State Univ, Dunedin, New Zealand
Mapping the seasonal and multiannual crevasse signal of tidewater glacier retreat (1141954)
Maximillian S Van Wyk de Vries, University of Minnesota Twin Cities, Department of Earth and Environmental Sciences and Saint Anthony Falls Laboratory, Minneapolis, United States, James Lea, University of Liverpool, Department of Geography and Planning, Liverpool, United Kingdom and David W Ashmore, University of Liverpool, School of Environmental Sciences, Liverpool, United Kingdom
Modeling the Processes that Control Ice-Shelf Rift Paths Using Damage Mechanics (1154724)
Alexander Huth, Princeton University, Program in Atmospheric and Oceanic Sciences, Princeton, United States, Ravindra Duddu, Vanderbilt-Civil and Envr Eng, Nashville, TN, United States, Benjamin Eaton Smith, University of Washington, Seattle, WA, United States and Olga V Sergienko, Princeton University, Program in Atmospheric and Oceanic Sciences, Princeton, NJ, United States
Development of a 1D ice mélange flow model based on continuum descriptions of granular materials (1167597)
Jason M Amundson, University of Alaska Southeast, Juneau, AK, United States, Justin C Burton, Emory University, Physics, Atlanta, GA, United States, Alexander Robel, Georgia Institute of Technology Main Campus, Earth and Atmospheric Science, Atlanta, United States, Ziad Rashed, Georgia Institute of Technology Main Campus, Atlanta, GA, United States and Rebecca H Jackson, WHOI, Woods Hole, MA, United States
Analysis of Terminus Ablation Time Series for Glaciers in Kalaallit Nunaat (Greenland) (1169049)
Aman KC, Boise State University, Department of Geosciences, Boise, United States, Ellyn M Enderlin, Boise State University, Department of Geosciences, Boise, ID, United States, Dominik Fahrner, University of Oregon, Department of Earth Sciences, Eugene, United States, Twila Moon, National Snow and Ice Data Center, CIRES, University of Colorado Boulder, Boulder, United States and Dustin Carroll, San José State University, Moss Landing Marine Laboratories, Moss Landing, United States
Abatement of ocean-wave impact by an ice shelf with rolling surface morphology (1170491)
Yuri Konovalov, Financial University under the Government of the Russian Federation, Moscow, Russia, Peter Nekrasov, University of Chicago, Computational and Applied Mathematics, Chicago, United States and Douglas R MacAyeal, University of Chicago, Department of Geophysical Science, Chicago, IL, United States
Consider a spherical iceberg: constraining characteristic iceberg geometries using subsurface iceberg measurements (1172201)
Kristin M Schild, University of Maine, Earth and Climate Sciences, Orono, ME, United States, David Sutherland, University of Oregon, Department of Earth Sciences, Eugene, OR, United States and Hariharan Balasubramanian, University of Maine, Climate Change Institute, Orono, United States
Quantifying ice mélange properties in Greenlandic fjords towards a better understanding of the glacier-ocean-mélange system (1177822)
Nicole Abib, University of Oregon, Department of Earth Sciences, Eugene, United States, David Sutherland, University of Oregon, Department of Earth Sciences, Eugene, OR, United States and Jason M Amundson, University of Alaska Southeast, Juneau, AK, United States
Does Iceberg Configuration Impact the Behavior of Helheim Glacier's Ice Mélange? (1179836)
Michael G Shahin1, Siddharth Shankar1, Leigh A Stearns2, David C Finnegan3, Adam L LeWinter4, Cornelis Jakob van der Veen5 and Shad O'Neel6, (1)University of Kansas, Department of Geology, Lawrence, United States, (2)University of Kansas, Department of Geology, Lawrence, KS, United States, (3)US Army Corps of Engineers Cold Regions Research and Engineering Laboratory, Hanover, United States, (4)US Army Corps of Engineers Cold Regions Research and Engineering Laboratory, Hanover, NH, United States, (5)University of Kansas, Department of Geography and Atmospheric Science, Lawrence, United States, (6)U.S. Army Corps of Engineers, Cold Regions Research and Engineering Laboratory, Boise, United States
Spatiotemporal Analysis of ICESat-2 observation of Ice Mélange Thickness in Antarctic rifts (1185625)
Canyon Breyer, Scripps Institution of Oceanography, La Jolla, CA, United States and Helen Amanda Fricker, University of California, San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States
Downstream Impacts of Melting Icebergs on Circulation and Mercury Cycling in a Glacial Fjord (Invited) (1188223)
Margaret Ruth Lindeman, Scripps Institution of Oceanography, La Jolla, United States; University of Southampton, Southampton, United Kingdom, Fiammetta Straneo, Scripps Institution of Oceanography, La Jolla, CA, United States, Amina Traore Schartup, Harvard School of Engineering and Applied Sciences, Cambridge, MA, United States and Claudia Cenedese, WHOI, Woods Hole, MA, United States
Estimating drag at the near-vertical ice-ocean interface using field observations of ambient meltwater plume velocities and ice morphology at an iceberg (1188931)
Nadia Cohen1, Jonathan D Nash1, Meagan E. Wengrove2, Ken Zhao3, David Sutherland4 and Erin C Pettit5, (1)Oregon State University, Corvallis, OR, United States, (2)Oregon State University, Department of Civil and Construction Engineering, Corvallis, OR, United States, (3)University of California Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, United States, (4)University of Oregon, Department of Earth Sciences, Eugene, OR, United States, (5)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, United States
A temporal analysis of iceberg distribution in Greenland fjords: 2017 - 2021 (1190550)
Siddharth Shankar1, Leigh A Stearns2, Cornelis Jakob van der Veen3 and Isabella M Bray2, (1)University of Kansas, Department of Geology, Lawrence, United States, (2)University of Kansas, Department of Geology, Lawrence, KS, United States, (3)University of Kansas, Department of Geography and Atmospheric Science, Lawrence, United States
Calving Rate vs Iceberg Drift Rate: Disentangling Iceberg Distributions in Greenland Fjords (1194343)
Leigh A Stearns, University of Kansas, Department of Geology, Lawrence, KS, United States, Siddharth Shankar, University of Kansas, Department of Geology, Lawrence, United States and Cornelis Jakob van der Veen, University of Kansas, Department of Geography and Atmospheric Science, Lawrence, United States
