@article {135, title = {Analysis of a GRACE global mascon solution for Gulf of Alaska glaciers}, journal = {Journal of Glaciology}, volume = {59}, year = {2013}, pages = {913-924}, doi = {10.3189/2013JoG12J197}, author = {Anthony A. Arendt and Scott B Luthcke and Alex S. Gardner and Shad O'Neel and D. Hill and Geir Moholdt and Waleed Abdalati} } @article {138, title = {Does calving matter? Evidence for significant submarine melt}, journal = {Earth and Planetary Science Letters}, volume = {380}, year = {2013}, pages = {21 - 30}, issn = {0012-821X}, doi = {http://dx.doi.org/10.1016/j.epsl.2013.08.014}, url = {http://www.sciencedirect.com/science/article/pii/S0012821X13004408}, author = {Timothy C. Bartholomaus and Chris F. Larsen and Shad O'Neel} } @article {80, title = {Calving seismicity from iceberg{\textendash}sea surface interactions}, journal = {Journal of Geophysical Research}, volume = {117}, year = {2012}, pages = {F04029}, doi = {10.1029/2012JF002513}, author = {Timothy C. Bartholomaus and Chris F. Larsen and Shad O'Neel and West, M.} } @article {76, title = {{Using surface velocities to calculate ice thickness and bed topography: a case study at Columbia Glacier, Alaska, USA}}, journal = {Journal of Glaciology}, volume = {58}, year = {2012}, pages = {1151-1164}, doi = {10.3189/2012JoG11J249}, author = {R ~W McNabb and Regine Hock and Shad O'Neel and L ~A Rasmussen and Ahn, Y. and M Braun and H Conway and Herreid, S. and Ian Joughin and W. Tad Pfeffer and B ~E Smith and Martin Truffer} } @article {154, title = {A complex relationship between calving glaciers and climate}, journal = {Eos, Transactions American Geophysical Union}, volume = {92}, year = {2011}, pages = {305{\textendash}306}, abstract = {Many terrestrial glaciers are sensitive indicators of past and present climate change as atmospheric temperature and snowfall modulate glacier volume. However, climate interpretations based on glacier behavior require careful selection of representative glaciers, as was recently pointed out for surging and debris-covered glaciers, whose behavior often defies regional glacier response to climate [Yde and Paasche, 2010]. Tidewater calving glaciers (TWGs){\textemdash}mountain glaciers whose termini reach the sea and are generally grounded on the seafloor{\textemdash}also fall into the category of non-representative glaciers because the regional-scale asynchronous behavior of these glaciers clouds their complex relationship with climate. TWGs span the globe; they can be found both fringing ice sheets and in high-latitude regions of each hemisphere. TWGs are known to exhibit cyclic behavior, characterized by slow advance and rapid, unstable retreat, largely independent of short-term climate forcing. This so-called TWG cycle, first described by Post [1975], provides a solid foundation upon which modern investigations of TWG stability are built. Scientific understanding has developed rapidly as a result of the initial recognition of their asynchronous cyclicity, rendering greater insight into the hierarchy of processes controlling regional behavior. This has improved the descriptions of the strong dynamic feedbacks present during retreat, the role of the ocean in TWG dynamics, and the similarities and differences between TWG and ice sheet outlet glaciers that can often support floating tongues.}, keywords = {climate, glaciers}, issn = {2324-9250}, doi = {10.1029/2011EO370001}, url = {http://dx.doi.org/10.1029/2011EO370001}, author = {Post, Austin and Shad O'Neel and Roman J. Motyka and Streveler, Gregory} } @article {44, title = {Glacier microseismicity}, journal = {Geology}, volume = {38}, year = {2010}, pages = {319-322}, abstract = {We present a framework for interpreting small glacier seismic events based on data collected near the center of Bering Glacier, Alaska, in spring 2007. We find extremely high microseismicity rates (as many as tens of events per minute) occurring largely within a few kilometers of the receivers. A high-frequency class of seismicity is distinguished by dominant frequencies of 20{\textendash}35 Hz and impulsive arrivals. A low-frequency class has dominant frequencies of 6{\textendash}15 Hz, emergent onsets, and longer, more monotonic codas. A bimodal distribution of 160,000 seismic events over two months demonstrates that the classes represent two distinct populations. This is further supported by the presence of hybrid waveforms that contain elements of both event types. The high-low-hybrid paradigm is well established in volcano seismology and is demonstrated by a comparison to earthquakes from Augustine Volcano. We build on these parallels to suggest that fluid-induced resonance is likely responsible for the low-frequency glacier events and that the hybrid glacier events may be caused by the rush of water into newly opening pathways.}, doi = {10.1130/G30606.1}, url = {http://geology.gsapubs.org/content/38/4/319.abstract}, author = {West, M. and Chris F. Larsen and Martin Truffer and Shad O'Neel and LeBlanc, Laura} } @article {48, title = {Iceberg calving as a primary source of regional-scale glacier-generated seismicity in the St. Elias Mountains, Alaska}, journal = {Journal of Geophysical Research}, volume = {115}, year = {2010}, pages = {F04034}, doi = {10.1029/2009JF001598}, author = {Shad O'Neel and Chris F. Larsen and Rupert, N. and Hansen, R.} }