C020
Integrated Multidisciplinary Observations and Modeling of Marine-Terminating Glacier System Dynamics
Session ID#: 249674
Session Description:
Marine-terminating glaciers around the world are experiencing retreat and mass loss. However, the rates of retreat vary widely, with several remaining stable or even advancing. This heterogeneity results from dynamics in glaciology, sedimentology, geophysics, climatology, and oceanography. Therefore, improved understanding of these systems requires integrating observations across disciplines and designing physics-based models that accurately represent the key processes and feedbacks driving glacier behavior. We invite abstracts that use multidisciplinary datasets to understand any combination of glacier, climate, sediment, bedrock, and ocean interactions in the past, present and future. We also invite those who model feedbacks between these dynamic systems. This session aims to bring together researchers working in diverse marine-terminating glacial environments to better characterize the autogenic (internal) and allogenic (forced) processes that impact glacial stability. In particular, this session seeks to unite those working across disciplines to expand, refine, and answer questions about the dynamics of marine-terminating glaciers globally.
Co-Sponsor(s):
Index Terms:
0720 Glaciers [CRYOSPHERE]
Primary Convener: Duncan Wheeler, Tufts University, Medford, United States
Conveners: Sean P S Gulick, University of Texas, Institute for Geophysics, Austin, United States, Mikayla Pascual, University of Texas at Austin, Austin, TX, United States and Nadia Cohen, Oregon State University, Civil and Construction Engineering, Corvallis, United States
Rapid Mélange Collapse and De-Buttressing in a Coupled Glacier/Ocean/Mélange Model (GLACIOME) (1856430)
Paul Summers, Rutgers University New Brunswick, New Brunswick, NJ, United States; Georgia Institute of Technology, School of Earth and Atmospheric Sciences, Atlanta, United States, Rebecca H Jackson, Tufts University, Earth and Climate Sciences, Medford, MA, United States; Rutgers University New Brunswick, New Brunswick, United States and Alexander Robel, Georgia Institute of Technology, Earth and Atmospheric Sciences, Atlanta, United States
Evidence of changes in central Cordilleran ice stream sediment contribution and interactions with nearshore Pacific Ocean circulation throughout the Pleistocene (1875857)
Marion McKenzie1, Theresa M King2, Sierra Rothman-Haji3, Ava Nordgren1, Shanti B. Penprase4, Ryan Venturelli1, Emma Blair1, John Schiavo1 and Lauren Miller5, (1)Colorado School of Mines, Geology and Geological Engineering, Golden, United States, (2)Colorado School of Mines, Geology and Geological Engineering, Golden, CO, United States, (3)Colby College, Department of Geology, Waterville, United States, (4)Dartmouth College, Department of Earth Sciences, Hanover, United States, (5)University of Virginia, Department of Environmental Sciences, Charlottesville, United States
Modification of the size distribution of bubbles upon their release from glacier ice into the water, and possible implications for the effect of bubbles on submarine melting (1876053)
Hayden Johnson1,2, Grant B Deane2, Dale Stokes2, Oskar Glowacki3, Mateusz Moskalik3, Mandar Chitre4 and Hari Vishnu4, (1)University of Alaska Fairbanks, Fairbanks, United States, (2)University of California San Diego, Scripps Institution of Oceanography, San Diego, United States, (3)Institute of Geophysics, Polish Academy of Sciences, Warsaw, Poland, (4)Acoustic Research Laboratory, National University of Singapore, Singapore, Singapore
Resolving Greenland’s Sediment Budget: the Role of Ice-Rafted Debris (Invited) (1878849)
Ethan Pierce, Dartmouth College, Thayer School of Engineering, Hanover, United States, Irina Overeem, University of Colorado, Department of Geological Sciences and Institute of Arctic and Alpine Research, Boulder, United States and Bent Hasholt, University of Copenhagen, Department of Geosciences and Natural Resource Management, Copenhagen, Denmark
Submarine exploration of an active grounding line in Greenland with a hybrid ROV (Invited) (1879557)
Ginny A Catania, University of Texas at Austin, Jackson School of Geosciences, Austin, United States, Rebecca H Jackson, Tufts University, Earth and Climate Sciences, Medford, MA, United States; Rutgers University, Department of Marine and Coastal Sciences, New Brunswick, United States, Michael Jakuba, Woods Hole Oceanographic Inst., Woods Hole, United States, Dan Duncan, University of Texas at Austin, Institute for Geophysics, Jackson School of Geosciences, Austin, United States, Greg Abram, University of Texas at Austin, Texas Advanced Computing Center, Austin, United States and TERMINUS Team
Relating Terminus Stability with Proglacial Sedimentation in Two Western Greenlandic Fjords (1899546)
Rachael Durr1, John M. Jaeger1, William Kenney2, Dan Duncan3, Marcy B Davis3, Jonathan Amendola4, Dallas Sherman4, Sean P S Gulick4, John Goff4, Emily An5, Emily Eidam5 and TERMINUS Expedition Team, (1)University of Florida, Department of Geological Sciences, Gainesville, United States, (2)University of Florida, Land Use and Environmental Change Institute, Gainesville, United States, (3)University of Texas at Austin, Institute for Geophysics, Jackson School of Geosciences, Austin, United States, (4)University of Texas, Institute for Geophysics, Austin, United States, (5)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, United States
Dynamic sedimentary processes of morainal bank construction revealed in near-terminus, hybrid ROV-mounted chirp data, Kangerlussuup Sermia Glacier, Greenland (1900629)
John Goff1, Dallas Sherman2, Jonathan Amendola2, Sean P S Gulick2 and TERMINUS Expedition Team, (1)University of Texas at Austin, Institute for Geophysics, Jackson School of Geosciences, Austin, TX, United States, (2)University of Texas, Institute for Geophysics, Austin, United States
Novel Observations of Suspended Sediment Dynamics in a Greenlandic Subglacial Plume (1901483)
Emily An1, Emily Eidam1, Rebecca H Jackson2, Bridget Ovall3, Duncan Wheeler4 and TERMINUS Expedition Team, (1)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, United States, (2)WHOI, Woods Hole, United States, (3)Rutgers University, New Brunswick, United States, (4)University of California San Diego, Scripps Institution of Oceanography, La Jolla, United States
Recent instability of ice rises adjacent to Pine Island Glacier, Antarctica suggests irreversible retreat (1907811)
Kate Winter1, John Woodward2, Rebecca J. Sanderson3, Scott Steven Braddock4, Jonathan Adams5, Keir Nichols6, Rebecca McCerery2, Seth W Campbell4, Dylan H Rood7, Ryan Venturelli8, Brenda L Hall4 and Dr. Joanne Johnson9, (1)Northumbria University Newcastle, Newcastle upon Tyne, UNITED KINGDOM, (2)Northumbria University, Newcastle-Upon-Tyne, United Kingdom, (3)University of Newcastle, Newcastle upon Tyne, United Kingdom, (4)University of Maine, Earth and Climate Sciences and Climate Change Institute, Orono, United States, (5)Université de Lorraine, Lorraine, France, (6)Scottish Universities Environmental Research Centre, Glasgow, United Kingdom, (7)Imperial College London, Department of Earth Science and Engineering, London, United Kingdom, (8)Colorado School of Mines, Geology and Geological Engineering, Golden, United States, (9)NERC British Antarctic Survey, Cambridge, United Kingdom
Multidisciplinary investigation on the role of frontal ablation in Juneau Icefield lake-terminating glacier change (1919096)
William H Armstrong Jr1, David Sutherland2, Irina Overeem3, Victoria Benson4, Jocelyn Nicole Reahl5, Kyia Wing6, Carly Kammerdiener1, Nick Scrocco6, Victoria Apostolides6 and Lily Ann Reece7, (1)Appalachian State University, Department of Geological and Environmental Sciences, Boone, NC, United States, (2)University of Oregon, Department of Earth Sciences, Eugene, OR, United States, (3)University of Colorado, Department of Geological Sciences and Institute of Arctic and Alpine Research, Boulder, United States, (4)University of Oregon, Department of Earth Sciences, Eugene, United States, (5)University of Colorado Boulder, Department of Geological Sciences and Institute of Arctic and Alpine Research, Boulder, United States, (6)Appalachian State University, Department of Geological and Environmental Sciences, Boone, United States, (7)Alaska Native Science and Engineering Program (ANSEP), Anchorage, United States
Observations of a Growing Subaqueous Proglacial Moraine and its Implications for Frontal Ablation Processes (1925063)
Adam S. Lucas1, David Sutherland2, Jonathan D Nash3, Erin C Pettit3, Jason M Amundson4, Nicole Abib5, Jesse Cusack3 and Dr. Trevor W Harrison, PhD6, (1)University of Oregon, Eugene, United States, (2)University of Oregon, Department of Earth Sciences, Eugene, OR, United States, (3)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, United States, (4)University of Alaska Southeast, Department of Natural Sciences, Juneau, United States, (5)University of Alaska Southeast, Department of Natural Sciences, Juneau, AK, United States, (6)Applied Physics Laboratory University of Washington, Seattle, WA, United States
Insights into sedimentation driven moraine building in marine terminating glaciers: A look inside from the TERMINUS expedition, west Greenland (1925431)
Sean P S Gulick1, Jonathan Amendola2, John Goff2, John M. Jaeger3, Rachael Durr3, Dallas Sherman4 and TERMINUS Expedition Team, (1)The University of Texas at Austin, UTIG and EPS, Jackson School of Geosciences, Austin, United States, (2)University of Texas, Institute for Geophysics, Austin, United States, (3)University of Florida, Department of Geological Sciences, Gainesville, United States, (4)Institute for Geophysics, Jackson School of Geosciences, UT Austin, Austin, United States
Georeferencing Drone Imagery of Marine Terminating Glaciers Without Ground Control in Western Greenland (1931167)
Riley Foster1, Casey Vigilia2, Ginny A Catania3, Benjamin Keisling1 and TERMINUS Expedition Team, (1)University of Texas, Institute for Geophysics, Austin, United States, (2)University of Texas at Austin, Department of Earth and Planetary Sciences, Austin, United States, (3)University of Texas at Austin, Jackson School of Geosciences, Austin, United States
Differential Sedimentary Responses to Grounding Zone and Ice Shelf Retreat Around Ross Bank (1936648)
Magkena Szemak1, Lindsay Prothro2, Philip J Bart3, Wojciech Majewski4, Amy Leventer5, Matthew Danielson3 and Ben Lindsey3, (1)Texas A&M University Corpus Christi, Department of Physical and Environmental Sciences, Corpus Christi, TX, United States, (2)Texas A&M University Corpus Christi, Department of Physical and Environmental Sciences, Corpus Christi, United States, (3)Louisiana State University, Department of Geology and Geophysics, Baton Rouge, United States, (4)Institute of Paleobiology, Polish Academy of Sciences, Warszawa, Poland, (5)Colgate University, Hamilton, United States
Subglacial erosion rates calculated from proglacial sediments in two marine terminating glaciers in West Greenland (1937346)
Jonathan Amendola1, Dallas Sherman1, Sean P S Gulick1, John Goff1, John M. Jaeger2, Rachael Durr2 and TERMINUS Expedition Team, (1)University of Texas, Institute for Geophysics, Austin, United States, (2)University of Florida, Department of Geological Sciences, Gainesville, United States
West Greenland Glacier Survey: ~80-year Elevation Changes Derived From Aerial Photography (1954668)
Sarah F Child, Cooperative Institute for Research in Environmental Sciences, Boulder, CO, United States, Leigh A Stearns, University of Pennsylvania, Department of Earth and Environmental Sciences, Philadelphia, PA, United States and Cornelis Jakob Van der Veen, University of Kansas, Department of Geography and Atmospheric Science, Lawrence, United States
In-situ Observations of Frontal Ablation at Gilkey Glacier, a Lake-Terminating System in Southeast Alaska (1955388)
Victoria Benson, University of Oregon, Department of Earth Sciences, Eugene, United States, David Sutherland, University of Oregon, Department of Earth Sciences, Eugene, OR, United States, William H Armstrong Jr, Appalachian State University, Department of Geological and Environmental Sciences, Boone, NC, United States, Irina Overeem, University of Colorado, Department of Geological Sciences and Institute of Arctic and Alpine Research, Boulder, United States, Jocelyn Nicole Reahl, University of Colorado Boulder, Department of Geological Sciences and Institute of Arctic and Alpine Research, Boulder, United States and Kyia Wing, Appalachian State University, Department of Geological and Environmental Sciences, Boone, United States
Spatially Comprehensive Investigation of Submarine Terminus Morphology Across Greenland’s Tidewater Glaciers. (1999559)
Venezia Follingstad, University of Oregon, Department of Earth Sciences, Eugene, United States, David Sutherland, University of Oregon, Department of Earth Sciences, Eugene, OR, United States, Till Wagner, University of Wisconsin Madison, Madison, United States and Eric J Rignot, University of California Irvine, Department of Earth System Science, Irvine, CA, United States
