C009
Controls on Tidewater Glacier Terminus Dynamics in Observations and Models
Session ID#: 74796
Session Description:
The mass balance of tidewater glaciers can be highly sensitive to terminus position and improved projections of dynamic mass loss from glaciers, and associated ocean changes, require progress in our ability to predict tidewater glacier terminus positions in models. Ice-ocean interactions force terminus retreat and advance through a myriad of processes and feedbacks, which are heterogeneous across the glacier face, between glaciers, and over time. Measurements of quantities to constrain these processes are difficult to obtain in the near-terminus environment, impeding our ability to predict termini positions and shapes in models. This session focuses on progress in our process-based understanding of glacier termini through in-situ and remote observations as well as modeling studies in Greenland, Antarctica, Alaska, and elsewhere. We invite contributions focusing on any processes that influence and/or control tidewater glacier termini including, but not limited to, subglacial discharge, ice melt parameterizations, fjord ocean properties, plume upwelling, and calving.
Index Terms:
0758 Remote sensing [CRYOSPHERE]
0774 Dynamics [CRYOSPHERE]
0798 Modeling [CRYOSPHERE]
Primary Convener: Denis Felikson, NASA Goddard Space Flight Center, Cryospheric Sciences Laboratory, Greenbelt, MD, United States
Conveners: Ellyn M Enderlin, Boise State University, Boise, ID, United States, Catherine C Walker, NASA Goddard Space Flight Center, Cryospheric Sciences Laboratory, Greenbelt, MD, United States and Laura Stevens, Columbia University, Lamont-Doherty Earth Observatory, Palisades, NY, United States
Primary Liaison: Denis Felikson, NASA Goddard Space Flight Center, Cryospheric Sciences Laboratory, Greenbelt, MD, United States
Glacier weather vs glacier climate: At what scale do we need to parameterize calving? (Invited) (490978)
Leigh A Stearns, University of Kansas, Department of Geology, Lawrence, KS, United States, Cornelis Jakob van der Veen, University of Kansas, Department of Geography, Lawrence, KS, United States, Ginny A Catania, University of Texas at Austin, Austin, TX, United States and David C Finnegan, US Army Corps of Engineers Cold Regions Research and Engineering Laboratory, Hanover, NH, United States
Modeling calving dynamics of tidewater glaciers to simulate the future sea level contribution of Greenland (Invited) (491676)
Youngmin Choi1, Mathieu Morlighem1, Michael Wood2 and Eric J Rignot3, (1)University of California - Irvine, Irvine, CA, United States, (2)University of California Irvine, Irvine, CA, United States, (3)University of California Irvine, Department of Earth System Science, Irvine, CA, United States
Periodic pro-glacial lake drainage events drive dynamic behavior of Narssap Sermia, Southwest Greenland from 2000 – 2010 (494682)
Joseph P Tulenko, University at Buffalo, Buffalo, NY, United States, Beata M Csatho, University at Buffalo, Department of Geology, Buffalo, NY, United States and Denis Felikson, NASA Goddard Space Flight Center, Cryospheric Sciences Laboratory, Greenbelt, MD, United States
Iceberg Calving and Meltwater Plumes at Helheim Glacier, Visualized in High-Resolution Satellite Imagery (494861)
Sierra Melton1, Richard B Alley1, Sridhar Anandakrishnan1, Byron R Parizek2 and Nouf Waleed Alsaad1, (1)Pennsylvania State University Main Campus, Geosciences, University Park, PA, United States, (2)Pennsylvania State University, University Park, PA, United States
Validating a Fully Coupled Model of Calving, Subglacial Hydrology, Proglacial Plumes and Ice Flow at Store Glacier, West Greenland, using High-Resolution Radar Interferometry (505216)
Samuel Cook1, Poul Christoffersen1, Joe Todd2, Donald Slater3, Nolwenn Chauche4 and Martin Truffer5, (1)University of Cambridge, Scott Polar Research Institute, Cambridge, United Kingdom, (2)University of St Andrews, St Andrews, United Kingdom, (3)Scripps Institution of Oceanography, La Jolla, CA, United States, (4)Aberystwyth University, Geography & Earth Sciences, Aberystwyth, United Kingdom, (5)University of Alaska Fairbanks, Geophysical Institute, Fairbanks, AK, United States
The role of ocean warming in the widespread retreat of Greenland’s marine-terminating glaciers (518184)
Michael Wood1, Eric J Rignot2, Ian G Fenty3, Jeremie Mouginot2, Mathieu Morlighem4 and Josh K Willis5, (1)University of California Irvine, Earth System Science, Irvine, CA, United States, (2)University of California Irvine, Department of Earth System Science, Irvine, CA, United States, (3)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (4)University of California - Irvine, Irvine, CA, United States, (5)Jet Propulsion Laboratory, Pasadena, CA, United States
Morainal bank evolution and fjord infilling during a tidewater glacier stillstand, on seasonal to decadal timescales (519631)
Emily Eidam1, David Sutherland2, Dan Duncan3, Christian Kienholz4, Jason M Amundson4 and Roman J Motyka5, (1)University of North Carolina at Chapel Hill, Department of Marine Sciences, Chapel Hill, NC, United States, (2)University of Oregon, Department of Earth Sciences, Eugene, OR, United States, (3)University of Texas, Institute for Geophysics, Austin, TX, United States, (4)University of Alaska Southeast, Juneau, AK, United States, (5)Univ Alaska-Geophysical Inst, Juneau, AK, United States
Investigating the Relationship Between Iceberg Calving and Terminus Velocity at Helheim Glacier from Two Autonomous Terrestrial LiDAR Scanners (537625)
Michael G Shahin1, Leigh A Stearns1, David C Finnegan2, Adam L LeWinter2, Ananda S Fowler2, Peter J Gadomski2 and Cornelis Jakob van der Veen3, (1)University of Kansas, Department of Geology, Lawrence, KS, United States, (2)US Army Corps of Engineers Cold Regions Research and Engineering Laboratory, Hanover, NH, United States, (3)University of Kansas, Department of Geography, Lawrence, KS, United States
Short-term velocity and variability of West Greenland Glaciers (563137)
Emily Kane1, Eric J Rignot2, Michael Wood1, Mark A Fahnestock3, Virginia Brancato4 and Hongju Yu5, (1)University of California Irvine, Irvine, CA, United States, (2)University of California Irvine, Department of Earth System Science, Irvine, CA, United States, (3)University of Alaska Fairbanks, Geophysical Institute, Fairbanks, AK, United States, (4)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (5)Univ of California Irvine, Irvine, CA, United States
The potential of Sentinel-1/-2 data for the monitoring of Antarctic surface melt and calving front dynamics (575882)
Mariel Dirscherl1, Celia Baumhoer1, Andreas J. Dietz1 and Claudia Kuenzer1,2, (1)German Aerospace Center (DLR), Land Surface Dynamics, Oberpfaffenhofen, Germany, (2)University of Würzburg, Remote Sensing, Würzburg, Germany
Formation, flow, and break-up of ephemeral ice mélange at LeConte Glacier and Bay, Alaska (580418)
Jason M Amundson1, Christian Kienholz1, David Sutherland2, Rebecca H Jackson3, Roman J Motyka4, Jonathan D Nash5, Alexander Hager2 and Erin C Pettit6, (1)University of Alaska Southeast, Juneau, AK, United States, (2)University of Oregon, Eugene, OR, United States, (3)Rutgers University, New Brunswick, NJ, United States, (4)Univ Alaska-Geophysical Inst, Juneau, AK, United States, (5)Oregon State Univ, Corvallis, OR, United States, (6)University of Alaska Fairbanks, Fairbanks, AK, United States
Understanding the source of glacial earthquakes : mechanical modeling of capsizing icebergs and generated water motion (584142)
Pauline Hélène Hermine Bonnet1, Vladislav Yastrebov2, Patrick Queutey3, Alban Leroyer3, Anne Mangeney4, Olivier Castelnau5,6, Amandine Sergeant7, Eleonore Stutzmann8 and Jean-Paul Montagner9, (1)Institut de Physique du Globe de Paris, Seismology Group, Paris, France, (2)Mines ParisTech, PSL University, Centre des Matériaux, CNRS UMR 7633, Evry, France, (3)Laboratoire LHEEA, METHRIC Team, UMR CNRS n°6598, Centrale Nantes, Nantes, France, (4)University of Paris, Institut de Physique du Globe de Paris, Paris, France, (5)CNRS, Paris Cedex 16, France, (6)PIMM Laboratoire Procédés et Ingénierie en Mécanique et Matériaux, Paris, France, (7)ETH Swiss Federal Institute of Technology Zurich, VAW, Zurich, Switzerland, (8)Université de Paris, Institut de physique du globe de Paris, CNRS, Paris, France, (9)University de Paris, Institut de Physique du Globe de Paris, Paris, France
Variability in subglacial discharge and submarine melt at LeConte Glacier, Alaska inferred from oceanographic budgets: methods, error analysis & results (587866)
Rebecca H Jackson1, Roman J Motyka2, Christian Kienholz3, David Sutherland4, Alexander Hager4, Jonathan D Nash5, Willaim P Dryer6 and Jason M Amundson3, (1)Rutgers University, New Brunswick, NJ, United States, (2)Univ Alaska-Geophysical Inst, Juneau, AK, United States, (3)University of Alaska Southeast, Juneau, AK, United States, (4)University of Oregon, Eugene, OR, United States, (5)Oregon State Univ, Corvallis, OR, United States, (6)University of Alaska Southeast, Juneau, United States
Water, on Ice! : Diurnal-scale Observational Analysis of the Hydrology of Three Greenland Tidewater Glaciers from Planet Satellite Imagery (596458)
Kathrine Udell1, Britney E Schmidt2, Catherine Walker3, Peter Washam4 and Anastacia Grace Wood1, (1)Georgia Institute of Technology Main Campus, Atlanta, GA, United States, (2)Georgia Institute of Technology, School of Earth and Atmospheric Sciences, Atlanta, GA, United States, (3)Woods Hole Oceanographic Institution, Woods Hole, United States, (4)University of Delaware, Newark, DE, United States
Tidally-induced motion of Helheim Glacier in South-East Greenland detected by GPS (612856)
Ciprian Spatar1, Stuart Edwards1, Christopher Pearson1, Tavi Murray2, Ian Martin3 and Meredith Nettles4, (1)Newcastle University, School of Engineering, Newcastle upon Tyne, United Kingdom, (2)Swansea University, Glaciology Group, Swansea, United Kingdom, (3)QuantuMDx, Newcastle upon Tyne, United Kingdom, (4)Columbia University, Lamont-Doherty Earth Observatory, Palisades, NY, United States
Controls on Multi-Decadal Variability of Marine-Terminating Outlet Glaciers in Northwestern Greenland (612978)
Taryn E Black1,2 and Ian R Joughin2, (1)University of Washington, Earth and Space Sciences, Seattle, WA, United States, (2)Applied Physics Laboratory University of Washington, Seattle, WA, United States
