TY - JOUR T1 - The evolution of crystal fabric in ice sheets and its link to climate history JF - Journal of Glaciology Y1 - 2013 A1 - Joseph H Kennedy A1 - Erin C Pettit A1 - Di Prinzio, Carlos L AB - The evolution of preferred crystal-orientation fabrics is strongly sensitive to the initial fabric and texture. A perturbation in climate can induce variations in fabric and texture in the firn. Feedbacks between fabric evolution and ice deformation can enhance these variations through time and depth in an ice sheet. We model the evolution of fabric under vertical uniaxial compression and pure shear regimes typical of ice divides. Using an analytic anisotropic flow law applied to an aggregate of distinct ice crystals, the model evolves the fabric and includes parameterizations of crystal growth, polygonization and migration recrystallization. Stress and temperature history drive the fabric evolution. Using this model, we explore the evolution of a subtle variation in near-surface fabric using both constant applied stress and a stress-temperature history based on data from Taylor Dome, East Antarctica. Our model suggests that a subtle variation in fabric caused by climate perturbations will be preserved through time and depth in an ice sheet. The stress history and polygonization rate primarily control the magnitude of the preserved climate signal. These results offer the possibility of extracting information about past climate directly from ice fabrics. VL - 59 UR - http://glacierstest.gi.alaska.edu/sites/default/files/bibfiles/t12J159.pdf IS - 214 ER - TY - JOUR T1 - Borehole temperatures reveal details of 20th century warming at Bruce Plateau, Antarctic Peninsula JF - The Cryosphere Y1 - 2012 A1 - Zagorodnov, V A1 - Nagornov, O A1 - Scambos, TA A1 - Muto, A A1 - Mosley-Thompson, E A1 - Erin C Pettit A1 - Tyuflin, S PB - Copernicus GmbH VL - 6 ER - TY - JOUR T1 - The crystal fabric of ice from full-waveform borehole sonic logging JF - Journal of Geophysical Research: Earth Surface (2003–2012) Y1 - 2012 A1 - Alessio Gusmeroli A1 - Erin C Pettit A1 - Joseph H Kennedy A1 - Ritz, Catherine PB - Wiley Online Library VL - 117 ER - TY - JOUR T1 - Listening to Glaciers: Passive Hydroacoustics Near Marine-Terminating Glaciers JF - Oceanography Y1 - 2012 A1 - Erin C Pettit A1 - Nystuen, Jeffrey A A1 - O'Neel, Shad PB - The Oceanography Society (TOS) VL - 25 ER - TY - JOUR T1 - Passive underwater acoustic evolution of a calving event JF - Annals of Glaciology Y1 - 2012 A1 - Erin C Pettit VL - 53 ER - TY - JOUR T1 - Seismic multiplet response triggered by melt at Blood Falls, Taylor Glacier, Antarctica JF - Journal of Geophysical Research: Earth Surface (2003–2012) Y1 - 2012 A1 - Carmichael, Joshua D A1 - Erin C Pettit A1 - Hoffman, Matt A1 - Fountain, Andrew A1 - Hallet, Bernard VL - 117 ER - TY - JOUR T1 - The crossover stress, anisotropy and the ice flow law at Siple Dome, West Antarctica JF - Journal of Glaciology Y1 - 2011 A1 - Erin C Pettit A1 - Waddington, Edwin D A1 - Harrison, William D A1 - Thorsteinsson, Throstur A1 - Elsberg, Daniel A1 - Morack, John A1 - Zumberge, Mark A PB - International Glaciological Society VL - 57 ER - TY - JOUR T1 - From ice-shelf tributary to tidewater glacier: continued rapid recession, acceleration and thinning of Rohss Glacier following the 1995 collapse of the Prince Gustav Ice Shelf, Antarctic Peninsula JF - Journal of Glaciology Y1 - 2011 A1 - Glasser, NF A1 - Scambos, TA A1 - Bohlander, J. A1 - Martin Truffer A1 - Erin C Pettit A1 - Davies, BJ VL - 57 UR - http://openurl.ingenta.com/content/xref?genre=article&issn=0022-1430&volume=57&issue=203&spage=397 ER - TY - JOUR T1 - Implications for the dynamic health of a glacier from comparison of conventional and reference-surface balances JF - Annals of Glaciology Y1 - 2009 A1 - Harrison, W. A1 - Cox, LH A1 - Regine Hock A1 - March, RS A1 - Erin C Pettit VL - 50 ER - TY - JOUR T1 - The role of crystal fabric in flow near an ice divide JF - Journal of Glaciology Y1 - 2007 A1 - Erin C Pettit A1 - Thorsteinsson, Throstur A1 - Jacobson, H Paul A1 - Waddington, Edwin D PB - International Glaciological Society VL - 53 ER - TY - JOUR T1 - Ice Flow at Low Deviatoric Stress: Siple Dome, West Antarctica JF - Glacier Science and Environmental Change Y1 - 2006 A1 - Erin C Pettit PB - Wiley Online Library ER - TY - JOUR T1 - Candidate drill site near the Ross-Amundsen ice divide, West Antarctica JF - DRAFT, Mar Y1 - 2005 A1 - Conway, H A1 - Neumann, TA A1 - Stephen F. Price A1 - Waddington, ED A1 - Morse, D A1 - Taylor, K A1 - Mayewski, PA A1 - Dixon, D A1 - Erin C Pettit A1 - Steig, EJ ER - TY - JOUR T1 - Proposed drill site near the Ross–Amundsen ice divide, West Antarctica JF - White Paper for the US Ice Core Working Group Y1 - 2005 A1 - Conway, H A1 - Neumann, TA A1 - Stephen F. Price A1 - Waddington, ED A1 - Morse, D A1 - Taylor, K A1 - Mayewski, PA A1 - Dixon, D A1 - Erin C Pettit A1 - Steig, EJ ER - TY - JOUR T1 - Depth-and time-dependent vertical strain rates at Siple Dome, Antarctica JF - Journal of Glaciology Y1 - 2004 A1 - Elsberg, Daniel H A1 - Harrison, William D A1 - Zumberge, Mark A A1 - Morack, John L A1 - Erin C Pettit A1 - Waddington, Edward D A1 - Husmann, Eric PB - International Glaciological Society VL - 50 ER - TY - JOUR T1 - Effects of basal sliding on isochrones and flow near an ice divide JF - Annals of Glaciology Y1 - 2003 A1 - Erin C Pettit A1 - Jacobson, H Paul A1 - Waddington, Edwin D PB - International Glaciological Society VL - 37 ER - TY - JOUR T1 - Ice flow at low deviatoric stress JF - Journal of Glaciology Y1 - 2003 A1 - Erin C Pettit A1 - Waddington, Edwin D PB - International Glaciological Society VL - 49 ER - TY - JOUR T1 - Spatial relationships between snow contaminant content, grain size, and surface temperature from multispectral images of Mt. Rainier, Washington (USA) JF - Remote sensing of environment Y1 - 2003 A1 - Kay, Jennifer E A1 - Gillespie, Alan R A1 - Hansen, Gary B A1 - Erin C Pettit PB - Elsevier VL - 86 ER - TY - JOUR T1 - Unique dynamic behaviors of ice divides: Siple Dome and the rheological properties of ice JF - PhD Dissertation Y1 - 2003 A1 - Erin C Pettit ER - TY - JOUR T1 - Measurement of vertical strain and velocity at Siple Dome, Antarctica, with optical sensors JF - Journal of Glaciology Y1 - 2002 A1 - Zumberge, Mark A A1 - Elsberg, Daniel H A1 - Harrison, William D A1 - Husmann, Eric A1 - Morack, John L A1 - Erin C Pettit A1 - Waddington, Edwin D PB - International Glaciological Society VL - 48 ER - TY - JOUR T1 - The effects of APU characteristics on the design of hybrid control strategies for hybrid electric vehicles JF - PROGRESS IN TECHNOLOGY Y1 - 1997 A1 - Anderson, Catherine A1 - Erin C Pettit PB - SAE INTERNATIONAL VL - 58 ER -