GC031
Dynamic Disturbance Processes in Permafrost Regions

Session ID#: 159002

Session Description:
Vast expanses of land areas around the world, including those in the circumpolar tundra, boreal forests, and the Tibetan Plateau, are underlain by permafrost and they are a unique and critical component of the Earth’s system. A variety of natural and anthropogenic disturbance agents exist within the permafrost regions, including wildfire, thermokarst, lake drainage, extreme weather events, and construction of roads, mines, and oil/gas facilities. Through different mechanisms, these disturbances exert various impacts on ecosystems and land-atmosphere interactions at different spatial scales. Over the past decades, the permafrost regions have experienced the highest levels of warming in the world, which has led to changing spatio-temporal patterns and magnitude of disturbance regimes. Unfortunately, due to the remoteness and unforgiving environmental conditions of the permafrost regions, our collective understanding of disturbances in those regions and how they interact with vegetation and climate has been limited. This session aims to collect the most recent findings on disturbance impacts on land surface properties and biogeochemical cycling with the hope to bridge some of the major knowledge gaps and ignite discussions about future research directions.
Index Terms:

0416 Biogeophysics [BIOGEOSCIENCES]
0428 Carbon cycling [BIOGEOSCIENCES]
0439 Ecosystems, structure and dynamics [BIOGEOSCIENCES]
0475 Permafrost, cryosphere, and high-latitude processes [BIOGEOSCIENCES]

Primary Convener:  Dong Chen, University of Maryland, College Park, United States
Conveners:  Adrian V Rocha, Univ of Notre Dame, Notre Dame, IN, United States, Gerald V Frost Jr, Stockholm University, Department of Physical Geography and Quaternary Geology, Stockholm, Sweden, Mark J Lara, University of Alaska Fairbanks, Fairbanks, United States and Yaping Chen, Virginia Institute of Marine Science, Gloucester Point, VA, United States
 
UAS-LiDAR Predicts 2D and 3D Spatiotemporal Patterns of Change in Retrogressive Thaw Slumps in Northern Alaska (1045545)
Emma Hall, University of Illinois at Urbana-Champaign, Urbana, IL, UNITED STATES and Mark J Lara, University of Illinois at Urbana Champaign, Departments of Geography and GIS and Plant Biology, Urbana, United States
 
Fire-vegetation interactions in Arctic tundra and their spatial variability (1063607)
Dong Chen1, Cheng Fu2, Liza K. Jenkins3, Jiaying He4, Randi Jandt5, Gerald V Frost Jr6, Allison E Bredder1 and Tatiana V Loboda4, (1)University of Maryland, College Park, United States, (2)University of Zurich, Department of Geography, Zurich, Switzerland, (3)Michigan Technological University, Ann Arbor, MI, United States, (4)University of Maryland, College Park, MD, United States, (5)Fire Ecologist, Alaska Fire Science Consortium, Fairbanks, AK, United States, (6)Stockholm University, Department of Physical Geography and Quaternary Geology, Stockholm, Sweden
 
Impact of Persistent Deep Underground Fire on Permafrost and Global Carbon Emission (1086951)
Shaorun Lin, Yunzhu Qin and Xinyan Huang, Hong Kong Polytechnic University, Hong Kong, Hong Kong
 
A spatio-temporal assessment of accelerated thaw-driven mass wasting on watershed geomorphology and biogeochemistry within the Willow River catchment, NT. (1097765)
Jaedyn Smith, University of Alberta, Edmonton, AB, Canada, Suzanne Tank, University of Alberta, Department of Biological Sciences, Edmonton, AB, Canada, Steve Kokelj, Northwest Territories Geological Survey, Yellowknife, NT, Canada, Jon F Tunnicliffe, Auckland University, School of Environment, Auckland, New Zealand, Duane G Froese, University of Alberta, Department of Earth and Atmospheric Sciences, Edmonton, AB, Canada and Jennifer B Korosi, York University, Toronto, Canada
 
Do Land Surface, Vegetation, and Climate have Causality with Wildfire in Boreal Forests? (1109269)
Sumanta Chatterjee1, Jingyi Huang1, Philip A Townsend2, Ankur R Desai3 and Martha Anderson4, (1)University of Wisconsin Madison, Soil Science, Madison, WI, United States, (2)University of Wisconsin Madison, Forest and Wildlife Ecology, Madison, United States, (3)University of Wisconsin Madison, Atmospheric and Oceanic Sciences, Madison, WI, United States, (4)USDA ARS Hydrology and Remote Sensing Laboratory, Beltsville, MD, United States
 
Response of Thermokarst Formation and Shrub Cover Change to Fire Disturbance in The Arctic Tundra Ecosystem (1109280)
Yaping Chen, Virginia Institute of Marine Science, Gloucester Point, VA, United States, Mark J Lara, University of Illinois at Urbana Champaign, Departments of Geography and GIS and Plant Biology, Urbana, United States and Fengsheng Hu, University of Illinois at Urbana Champaign, Plant Biology, Geology, Urbana, United States
 
Circumpolar landcover characterization (1109287)
Annett Bartsch1, Barbara Widhalm2, Aleksandra Efimova2, Helena Bergstedt2, Birgit Heim3 and Gustaf Hugelius4, (1)B.Geos, Vienna, Austria, (2)B.Geos, Korneuburg, Austria, (3)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Potsdam, Polar Terrestrial Environmental Systems, Potsdam, Germany, (4)Stockholm University, Department of Physical Geography, Stockholm, Sweden
 
InSAR Estimates and In-situ Observations of Supra-permafrost Water Storage in Undisturbed and Burned Areas in the Arctic Foothills (1113941)
Yue WU, University of Texas at Austin, Department of Aerospace Engineering & Engineering Mechanics, Austin, TX, United States, Jingyi Chen, University of Texas at Austin, Aerospace Engineering & Engineering Mechanics, Austin, TX, United States, Michael O'Connor, University of Texas at Austin, Department of Geological Sciences, Jackson School of Geosciences, Austin, TX, United States, Stephen Bruce Ferencz, Sandia National Laboratories, Energy & Water Group, Albuquerque, NM, United States, Adrian V Rocha, Univ of Notre Dame, Notre Dame, IN, United States, M. Bayani Cardenas, University of Texas at Austin, Department of Geological Sciences, Austin, TX, United States and George W Kling, University of Michigan, Ecology and Evolutionary Biology, Ann Arbor, MI, United States
 
Interferometric Synthetic Aperture Radar (InSAR) Applications for Permafrost Disturbance Studies (1116497)
Roger J Michaelides, Washington University in St Louis, Earth and Planetary Sciences, St. Louis, United States, Kevin M Schaefer, National Snow and Ice Data Center, Cooperative Institute for Research in the Environmental Sciences, University of Colorado at Boulder, Boulder, Colorado, U.S.A, Boulder, CO, United States, Richard H Chen, NASA Jet Propulsion Laboratory, Pasadena, CA, United States, Andy Parsekian, University of Wyoming, Laramie, WY, United States and Elizabeth Wig, Stanford University, Stanford, CA, United States
 
Patterns of Vegetation Succession Following Lake Drainage in Northern Alaska (1121659)
Caroline Ludden, University of Illinois at Urbana-Champaign, Urbana, IL, UNITED STATES, Wenqu Chen, University of Illinois, Geography, Urbana, United States and Mark J Lara, University of Alaska Fairbanks, Fairbanks, United States
 
Interactions Between Micro-topography and Burn Depth in Boreal to Sub-Arctic Peatlands (1136533)
Laura Chasmer1, Chris Hopkinson2, Kailyn Nelson2, Kevin Devito3, Linda Flade1, Emily Jones2, Nicholas Kettridge4, Richard M Petrone5, William L Quinton6, Daniel K Thompson7, David Olefeldt8 and James Michael Waddington9, (1)University of Lethbridge, Geography and Environment, Lethbridge, AB, Canada, (2)University of Lethbridge, Lethbridge, AB, Canada, (3)University of Alberta, Department of Biological Sciences, Edmonton, AB, Canada, (4)University of Birmingham, School of Geography, Earth & Environ. Sciences,, Birmingham, United Kingdom, (5)University of Waterloo, Geography and Environmental Management, Waterloo, ON, Canada, (6)Wilfrid Laurier University, Cold Regions Research Centre, Waterloo, ON, Canada, (7)Natural Resources Canada - Canadian Forest Service, Edmonton, AB, Canada, (8)University of Guelph, Guelph, ON, Canada, (9)McMaster University, School of Earth, Environment and Society, Hamilton, ON, Canada
 
Post-fire Thaw Subsidence at Beaver Creek, Yukon, Detected by L-band InSAR and Preliminarily Report of Field Observation (1138144)
Kazuki Yanagiya, Japan Aerospace Exploration Agency, Kanagawa, Japan, Masato Furuya, Hokkaido University, Department of Earth and Planetary Sciences, Earth and Planetary Dynamics, Sapporo, Japan, Go Iwahana, University of Alaska Fairbanks, International Arctic Research Center, Fairbanks, United States and Antoine Séjourné, Université Paris-Sud 11, Départment Sciences de la Terre, Orsay, France
 
Constructing a Database to Support the Study of ABoVE-domain Tundra Fire Dynamics (1171909)
Xiaoran Zhu, Boston University, Boston, MA, United States, Elizabeth Embury Hoy, NASA/GSFC, Greenbelt, MD, United States; Global Science and Technology Inc Greenbelt, Greenbelt, United States, Dong Chen, University of Maryland, College Park, United States and Maruko Kogure, University of Maryland, Geographical Sciences, College Park, United States
 
Post-Fire Controls On Active Layer Depth Across The Anaktuvuk River Fire (1173617)
Mayrangeli Torres Baez, University of Notre Dame, Biology, South Bend, United States, Randi Jandt, Fire Ecologist, Alaska Fire Science Consortium, Fairbanks, AK, United States, Go Iwahana, University of Alaska Fairbanks, International Arctic Research Center, Fairbanks, United States and Adrian V Rocha, Univ of Notre Dame, Notre Dame, IN, United States
 
Identifying Active Retrogressive Thaw Slumps from ArcticDEM Using Manual And Automated Feature Engineering (1193203)
Lingcao Huang, University of Colorado Boulder, Cooperative Institute for Research in Environmental Sciences, Boulder, United States, Michael J Willis, University of Colorado at Boulder, CIRES and Geological Sciences, Boulder, United States; Virginia Tech, Department of Geosciences, Blacksburg, United States, Kevin M Schaefer, National Snow and Ice Data Center, Cooperative Institute for Research in the Environmental Sciences, University of Colorado at Boulder, Boulder, Colorado, U.S.A, Boulder, CO, United States and Kristy French Tiampo, University of Colorado at Boulder, Department of Geological Sciences, Boulder, CO, United States
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