Alexander Kholodov
Positions Held:
- Research scholar visitor, Geophysical Institute, University of Alaska Fairbanks (2007 - Present)
- Senior Scientist, Laboratory of Soil Cryology, Institute of Physical-Chemical and Biological Problems of Soil Science RAS (2001 - 2007)
Present Research Interests:
- Temperature regime of permafrost
- Periglacial (cryogenic) processes and phenomena
- Gas and gas hydrates and their interaction with permafrost
- Organic substance in permafrost
- Offshore permafrost
- Sea-land interaction in the Arctic
- Quaternary geology and paleogeography
Sergey Marchenko
Professional Memberships and Awards:
- American Geophysical Union (AGU)
- United States Permafrost Association (USPA)
- European Geophysical Union (EGU)
Positions Held:
- Research Associate Professor, Geophysical Institute, University of Alaska Fairbanks (2008 - Present)
- Research Associate, Geophysical Institute, University of Alaska Fairbanks (2006 - 2008)
- Visiting Research Scholar, Geophysical Institute, University of Alaska Fairbanks (2003 - 2006)
- Senior Scientist, Yakutsk Permafrost Institute, Siberian Branch of Russian Academy of Sciences, Kazakhstan Alpine Permafrost Laboratory (1993 - 2003)
- Engineer, Yakutsk Permafrost Institute, Siberian Branch of Russian Academy of Sciences (1989 - 1993)
- Engineer, Research Institute of Mechanics, Almaty, Kazakhstan (1985 - 1989)
Present Research Interests:
- Interaction between climate and permafrost in Arctic and Sub-Arctic Regions
- Altitudinal permafrost formation, distribution and evolution in the mid-latitude mountain regions
- Modeling of temporal and spatial permafrost dynamics
Selected Publications:
- Marchenko, S., Romanovsky, V. & Tipenko, G. (2008). Numerical Modeling of Spatial Permafrost Dynamics in Alaska. Proceedings of the Ninth International Conference on Permafrost, University of Alaska Fairbanks, Jun 29 - July 3, 2008, 2: 1125-1130.
- Romanovsky, V.E., Kholodov, A.L., Marchenko, S.S., Oberman, N.G., Drozdov, D.S., Malkova, G.V., Moskalenko, N.G., Vasiliev, A.A., Sergeev, D.O., and Zheleznyak, M.N. (2008). Thermal State and Fate of Permafrost in Russia: First Results of IPY (Plenary Paper). Proceedings of the Ninth International Conference on Permafrost, University of Alaska Fairbanks, June 29 - July 3, 2008, 2: 1511-1518.
- Romanovsky, V.E., Marchenko, S.S., Daanen, R., Sergeev, D.O., and Walker, D.A. (2008). Soil Climate and Frost Heave Along the Permafrost/Ecological North American Arctic Transect. Proceedings of the Ninth International Conference on Permafrost, University of Alaska Fairbanks, June 29 - July 3, 2008, 2: 1519-1524.
- Stendel, M., Christensen, J.H., Aðalgeirsdóttir, G., Daanen, R., Marchenko, S., and Romanovsky, V. (2008). The Fate of Greenland’s Permafrost: Results from High-Resolution Transient Climate Simulations. Proceedings of the Ninth International Conference on Permafrost, University of Alaska Fairbanks, June 29 - July 3, 2008, 2: 1705-1709.
- Zhao, L., Marchenko, S.S., Sharkhuu, N., and Wu, T. (2008). Regional Changes of Permafrost in Central Asia (Plenary Paper). Proceedings of the Ninth International Conference on Permafrost, University of Alaska Fairbanks, June 29 - July 3, 2008, 2: 2061-2069.
- Riseborough, D., Shiklomanov, N.I., Etzelmuller, B., Gruber, S., & Marchenko, S. (2008). Space, time, and permafrost: Recent advances in permafrost modeling. Permafrost and Periglacial Processes. (19): 2, 137-156.
- Jorgenson, T., Yoshikawa, K., Kanevskiy, M., Shur, Y., Romanovsky, V., Marchenko, S., Grosse, G., Brown, J., and Jones, B. (2008). Permafrost Characteristics of Alaska. Ninth International Conference on Permafrost, University of Alaska Fairbanks, June 29 - July 3, 2008. Extended Abstracts, 121-122.
- Liljedahl, A., Hinzman, L., Marchenko, S., and Berezovskaya, S. (2008). The Effect of Spatially Distributed Snow Cover on Soil Temperatures: A Field and Modeling Study. Ninth International Conference on Permafrost, University of Alaska Fairbanks, June 29 - July 3, 2008. Extended Abstracts, 183-184.
- Marchenko, S., Sharkhuu, N., Li, X., Ishikawa, M., Brown, J., Romanovsky, V., and Drodzov, D. (2008). Toward a Permafrost Map of Central Asia. Ninth International Conference on Permafrost, University of Alaska Fairbanks, June 29 - July 3, 2008. Extended Abstracts, 203-204.
- Daanen, R.P., Romanovsky, V.E., Marchenko, S.S., Christensen, J.H., Stendel, M. and Ingeman- Nielsen, T. (2008). Greenland Permafrost Temperature Simulations. Ninth International Conference on Permafrost, University of Alaska Fairbanks, June 29 - July 3, 2008. Extended Abstracts, 55-56.
- Marchenko, S., Gorbunov, A. and V. Romanovsky. (2007). Permafrost Warming in the Tien Shan Mountains, Central Asia. Global and Planetary Change, 56, 311 – 327.
- Shiklomanov, N. I., O. A. Anisimov, T. Zhang, S. Marchenko, F. E. Nelson, and C. Oelke (2007), Comparison of model-produced active layer fields: Results for northern Alaska, J. Geophys. Res., 112, F02S10, doi:10.1029/2006JF000571.
Extended Publication List:
Chris Larsen
Dr. Larsen oversees the glacier altimetry program at the UAF-GI, and since 2009 Dr. Larsen has directed Operation Ice Bridge Alaska. Operation Ice Bridge is a NASA airborne mission focused on glaciers and icesheets worldwide, and is the largest airborne survey of Earth's polar ice ever flown. Additionally, Dr. Larsen uses an array of geodesy, remote sensing, photogrammetry and seismology in field-based research to study Alaskan glaciers.
Professional Memberships and Awards:
- Memberships
- American Geophysical Union
- International Glaciological Society
- Awards
- NASA Group Acheivement Award (Operation IceBridge 2010)
- American Geophysical Union Editor's Citation for Excellence in Refereeing (Geophysical Research Letters)
- NASA Earth Systems Science Fellowship (Proposal: Glacial Unloading: Forcings, Responses, and Processes)
Positions Held:
- Research Assistant Professor, Glaciology, Geophysical Institute, UAF (July 2006 - Present)
- Research Associate, Geodesy, Geophysical Institute, UAF (April 2004 - June 2006)
- Post Doctoral Fellow, Geodesy, Geophysical Institute, UAF (May 2003 - April 2004)
Present Research Interests:
- Airborne LiDAR
- GPS geodesy and surveying
- Mass loss of Alaskan Glaciers
- Glacier Dynamics
- Tidewater and Lacustrine Calving Dynamics
- Glacier generated seismicity
- Active tectonics and deformation of Alaska
- Glacial isostatic adjustment
Selected Publications:
- Burrows, R., S. Herreid, G. Adema, A. Arendt, C.F. Larsen (2011), Glacier trends and response to climate in Denali National Park and Preserve, Park Science.
- Sato, T., S. Miura , W. Sun , T. Sugano , J. Freymueller, C.F. Larsen, Y. Ohta, H. Fujimoto, D. Inazu, R.J. Motyka (in press, 2011) Gravity and uplift rates observed in Southeast Alaska and their comparison with GIA model predictions, J. Geophys. Res. 2011JB008485R.
- O’Neel, S., C.F. Larsen, N. Ruppert, R. Hansen, (2010) Iceberg Calving as a Primary Source of Regional-Scale Glacier-Generated Seismicity in the St. Elias Mountains, Alaska, J. Geophys. Res., doi:10.1029/2009JF001598.
- Sato, T., C.F. Larsen, Satoshi, M., Ohta, Y., Fujimoto, H., Sun, W., Motyka, R.J., Freymueller, J.T., (2010) Reevaluation of the viscoelastic and elastic responses to the past and present-day ice changes in Southeast Alaska, Tectonophysics, doi:10.1016/j.tecto.2010.05.009.
- Elliott, J., C. F. Larsen, J. T. Freymueller, and R. J. Motyka, (2010) Tectonic Block Motion and Glacial Isostatic Adjustment in Southeast Alaska and Adjacent Canada Constrained by GPS Measurements, J. Geophys. Res., doi:10.1029/2009JB007139.
- West, M., C.F. Larsen, M. Truffer, S O′Neel, and L. LeBlanc. (2010) Glacier microseismicity. Geology v. 38; no. 4; p. 319-322; DOI: 10.1130/G30606.1.
- Huggel, C., N. Salzmann, S. Allen, J. Caplan-Auerbach, L. Fischer, W. Haeberli, C.F. Larsen, D. Schneider, R. Wessels, (2010) Recent and future warm extreme events and high-mountain slope stability, Phil. Trans. R. Soc. A 2010 368, 2435-2459 doi: 10.1098/rsta.2010.0078.
- Sun, W., S. Miura, T. Sato, T. Sugano, J. Freymueller, M. Kaufman, C. F. Larsen, R. Cross, and D. Inazu (2010) Gravity measurements in southeastern Alaska reveal negative gravity rate of change caused by glacial isostatic adjustment, J. Geophys. Res., 115, doi:10.1029/2009JB007194.
Extended Publication List:
Regine Hock
Positions Held:
- (Currently) Professor of Geophysics, Geophysical Institute, University of Alaska Fairbanks
- (2002 - 2007) Research Fellow, Stockholm University
- (September 2001 - December 2001) Post-Doc, Department of Meteorology, Stockholm University
- (January 1998- July 2001) Researcher, Climate Impact Research Center, Kiruna, Sweden
Present Research Interests:
- Glacier Mass Balance
- Glacier Meteorology and Hydrology
- Modeling the response of glaciers to climate change
- Contribution of glacier wastage to global sea-level rise
Selected Publications:
- Möller, M., R. Finkelnburg, M. Braun, R. Hock, U. Jonsell, V. A. Pohjola, D. Scherer, and C. Schneider (2011), Climatic mass balance of the ice cap Vestfonna, Svalbard: A spatially distributed assessment using ERA-Interim and MODIS data, J. Geophys. Res., 116, F03009, doi:10.1029/2010JF001905.
- Sicart, J. E., R. Hock, P. Ribstein, J. P.Chazarin, M. Litt and E Ramirez, 2011. Analysis of the seasonal variations of mass balance and meltwater discharge of Tropical Zongo Glacier by application of a distributed energy balance model. Journal of Geophysical Research. 116, D13105, doi:10.1029/2010JD015105.
- Rasmussen, L. A., Conway, H., R. M. Krimmel and R. Hock, 2011. Surface mass balance, thinning, and iceberg production, Columbia Glacier, Alaska, 1948-2007. Journal of Glaciology 57(203), 431-440.
- Radić, V. and R. Hock. Regional differentiated contribution of mountain glaciers and ice caps to future sea-level rise. Nature Geoscience, 4, 91-94, DOI: 10.1038/NGEO1052.
- Sicart, J.E., R.Hock, P. Ribstein and J. P.Chazarin. Sky long-wave radiation on tropical Andean glaciers: parameterization and sensitivity to atmospheric variables. Journal of Glaciology 56(199), 854-860.
- Huss, M., R. Hock, A. Bauder and M. Funk, 2010. 100-year glacier mass changes in the Swiss Alps linked to the Atlantic Multidecadal Oscillation. Geophys. Res. Lett., 37, L10501, doi:10.1029/2010GL042616, 2010.
- Radić, V., and R. Hock, 2010. Regional and global volumes of glaciers derived from statistical upscaling of glacier inventory data, J. Geophys. Res., 115, F01010, doi:10.1029/2009JF001373.
William Harrison
Present Research Interests:
- Glacier respsonse to climate
- Instability mechanisms in glaciers, especially surging glaciers
- Glacier changes, especially in Alaska and the Yukon Territory
Guido Grosse
Professional Memberships and Awards:
- Memberships
- American Geophysical Union (AGU)
- European Geophysical Union (EGU)
- United States Permafrost Association (USPA)
- Permafrost Young Researchers Network (PYRN)
- Arctic Institute of North America (AINA)
- German Society for Polar Research (DGP)
Positions Held:
- (2009 – Present) Research Assistant Professor (Remote Sensing, GIS, Permafrost), UAF
- (2006 – 2009) IPY Presidential Postdoctoral Fellow (Remote Sensing, GIS, Geocryology, Paleoenvironment), UAF
- (2006) Postdoctoral Fellow (Remote Sensing), UAF
- (2001 – 2006) Research Assistant (Paleoenvironment, Stratigraphy, Remote Sensing, GIS), AWI for Polar and Marine Research Potsdam, Germany
- (1999 – 2001) Student Assistant (Geochronology, Sedimentology), Technical University Freiberg, Germany
- (1998) Student Internship (Oil & Gas Prodcution Division), INA Oil Industries Inc., Zagreb, Croatia
Present Research Interests:
- Causes, Impacts, and Feedbacks of Permafrost Degradation
- Remote Sensing of Periglacial Landscapes
- Carbon Cycle Dynamics in permafrost regions
- Spatial Analysis of Periglacial Geomorphology
- Palaeo-Environmental Reconstruction from permafrost deposits
- Matian Permafrost and Periglacial
Ed Bueler
Professional Memberships and Awards:
- Awards
- Faculty Advising Award for Outstanding Undergraduate Advising, 2003-2004
- Honorary Faculty Certificate of Appreciation for support of a student-athlete, 2004
- Bonus for Extraordinary Performance, CSEM, 2003
- Memberships
- American Mathematical Society (AMS)
- Society for Industrial and Applied Mathematics (SIAM)
- International Glaciological Society (IGS)
Positions Held:
- Associate Professor, DMS, UAF (August 2005–Present)
- Assistant Professor, DMS, UAF (August 2000–May 2005)
- Term and Visiting Assistant Professor, DMS, UAF (August 1998–May 2000)
- Postdoctoral Fellow, Year in Stochastic Analysis, Mathematical Sciences Research
- Institute, Berkeley (August 1997–May 1998)
Present Research Interests:
- Practical Ice Sheet Models
- Theory of Ice Flow
- Partial Differential Equations
- Variational Inequalities
- Delay Differential Equations
- Numerical Analysis
Selected Publications:
- R.Calov,R.Greve,A.Abe-Ouchi,E.Bueler,P.Huybrechts,J.V.Johnson,F.Pattyn, D. Pollard, C. Ritz, F. Saito, and L. Tarasov, 2010. Results from the Ice-Sheet Model Inter- comparison Project-Heinrich Event INtercOmparison (ISMIP–HEINO), Journal of Glaciology 56 (197), 371–383.
- E. Bueler and J. Brown, 2009. Shallow shelf approximation as a “sliding law” in a thermomechanically coupled ice sheet model, Journal of Geophysical Research (Earth Surface) 114, F03008, doi:10.1029/2008JF001179.
- E. A. Butcher, M. Sari, E. Bueler, and T. Carlson, 2009. Magnus’ expansion for time-periodic systems: parameter-dependent approximations, Communications in Nonlinear Sciences and Numerical Simulation 14, 4226–4245. P10. E. A. Butcher, O. A. Bobrenkov, E. Bueler, and P. Nindujarla, 2009. Analysis of milling stability by the Chebyshev collocation method: Algorithm and optimal stable immersion levels, Journal of Computational and Nonlinear Dynamics (ASME) 4 (3), 031003.
- V. Deshmukh, E. A. Butcher, and E. Bueler, 2008. Dimensional reduction of nonlin- ear delay differential equations with periodic coefficients using Chebyshev spectral collocation, Nonlinear Dynamics 52, 137–149. P8. E. Bueler, 2007. Error bounds for approximate eigenvalues of periodic-coefficient linear delay differential equations, SIAM Journal on Numerical Analysis 45 (6), 2510–2536.
- E. Bueler, J. Brown, and C. Lingle, 2007. Exact solutions to the thermomechanically coupled shallow ice approximation: effective tools for verification, Journal of Glaciology 53 (182), 499–516. P6. E. Bueler, C. S. Lingle, and J. A. Brown, 2007. Fast computation of a viscoelastic deformable earth model for ice flow simulations, Annals of Glaciology 46, 97–105.
- E. Bueler, C. S. Lingle, J. A. Kallen-Brown, D. N. Covey, and Latrice N. Bowman, 2005. Exact solutions and the verification of numerical models for isothermal ice sheets, Journal of Glaciology 51 (173), 291–306.
Extended Publication List:
Anthony Arendt
Professional Memberships and Awards:
Member, International Association of Cryospheric Sciences (IACS)
Positions Held:
- (October 2008 – Present) Assistant Research Professor, Geophysical Institute, University of Alaska Fairbanks, USA
- (September 2006 – September 2008) Postdoctoral Fellow, Oak Ridge Associated Universities at NASA Goddard Space Flight Center, Cryospheric Sciences Branch
- (August 2000 – August 2006) PhD Student at the Geophysical Institute, Geophysical Institute, University of Alaska Fairbanks, USA
- (January 1999 – July 2000) Climate Data Technician, Alberta Agriculture
- (1995 – 1998) Masters Student and Research Assistant, Earth and Atmospheric Sciences, Glaciology Group, University of Alberta, Edmonton, Canada.
Present Research Interests:
- Assessing contribution of glaciers and ice sheets to rising sea level
- Modeling glacier response to climate change
- Downscaling remote sensing data for hydrological modeling
- Validation of high-resolution satellite gravimetry (grace) data
- Development of aircraft and satellite laser altimetry mass balance methods
Selected Publications:
- Atwood, D., F. Meyer, A. Arendt. Using L-band SAR Coherence to Delineate Glacier Extent (2010).Canadian Journal of Remote Sensing. 36, Suppl. 1, S186-S195.
- Arendt, A., J. Walsh, W. Harrison (2009). Changes of Glaciers and Climate in Northwestern North America during the Late 20th Century. Journal of Climate. 22, 4117-4134.
- Arendt, A., S. Luthcke, R. Hock (2009). Glacier Changes in Alaska: Can Mass Balance Models Explain GRACE mascon trends? Annals of Glaciology. 50, 1-7.
- Arendt, A., S. Luthcke, C. Larsen, W. Abdalati, W. Krabill, M. Beedle (2008). Validation of High-Resolution GRACE mascon Estimates of Glacier Mass Changes in the St. Elias Mountains, Alaska, USA using Aircraft Laser Altimetry. Journal of Glaciology. 54(188), 778-787.
- Luthcke, S., A. Arendt, D. Rowlands, C. Larsen, J. McCarthy (2008). Recent Glacier Mass Changes in the Gulf of Alaska Region from GRACE MASCON solutions, Journal of Glaciology. 54(188), 767-777.
- Motyka, R., D. Lawson, D. Finnegan, G. Kalli, B. Molnia, A. Arendt (2008). Hubbard Glacier Update: Another Closure of Russell Fiord in the Making? Journal of Glaciology. 54(112), 562-564.
- Larsen, F., R. Motyka, A. Arendt, K. Echelmeyer, P. Geissler (2007). Glacier changes in southeast Alaska and northwest British Columbia and contribution to sea level rise. Journal of Geophysical Research, 112, doi:10.1029/2006JF000586.
Extended Publication List:
GI scientists help fuel delivery to Nome: Provide crucial information on ice conditions
Andy Mahoney, an assistant research professor with the Sea Ice Group at the Geophysical Institute, is helping to determine ice conditions near Nome, Alaska so a fuel tanker can deliver much-needed fuel to the northwest community.
Find out more about Mahoney's involvement by listening to an Alaska Public Radio story here.
