USAP-DC

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Histories of Accumulation, Thickness, and WAIS Divide Location, Antarctica Data DOI: https://doi.org/10.7265/N5QR4V2J Cite as Waddington, E. D., & Koutnik, M. (2010) "Histories of Accumulation, Thickness, and WAIS Divide Location, Antarctica" U.S. Antarctic Program (USAP) Data Center. doi: https://doi.org/10.7265/N5QR4V2J. AMD - DIF Record(s) NSIDC-0473_1 Abstract This data set contains radar internal layer and ice sheet topography data for two sites in Antarctica, along with associated model results from two studies. This project used geophysical inverse theory and a 2.5 D flowband ice-flow forward model to extract robust transient accumulation patterns from multiple deeper layers. Histories of divide migration, or the movement of the ice sheet and ice-surface evolution are also provided. The data used to solve the inverse problem, and the model solutions are provided. Internal layers, modern ice-surface velocities, and modern ice-sheet geometry at Taylor Mouth are available, as well as the pattern of accumulation inferred by Waddington et al. (2007). Data are available via FTP in Matlab (.mat) format. Supporting information is available as text files (.rtf and .txt). Creator(s): Waddington, Edwin D.; Koutnik, Michelle Date Created: 2010-06-20 Repository: USAP-DC (current) - NSIDC (original) License: Creative Commons Attribution-NonCommercial v4.0 Generic [CC BY-NC 4.0] Spatial Extent(s) West: -111.816667, East: -111.816667, South: -79.416667, North: -79.416667 West: 158.716667, East: 158.716667, South: -77.783333, North: -77.783333 Temporal Extent(s) Start: 2002-01-01 - End: 2004-12-31 Award(s) NSF 0440666 Version: 1 Related Project(s) Histories of accumulation, thickness and WAIS Divide location from radar layers using a new inverse approach References Waddington, E. D., T. A. Neumann, M. R. Koutnik, H. P. Marshall, and D. L. Morse. 2007. Inference of accumulation-rate patterns from deep layers in glaciers and ice sheets. Journal of Glaciology 53(183), 694-712. (doi:10.3189/002214307784409351) Neumann, T. A., H. Conway, S. F. Price, E. D. Waddington, G. A. Catania, and D. L. Morse. 2008. Holocene accumulation and ice sheet dynamics in central West Antarctica. Journal of Geophysical Research 113, dio:10.1029/2007JF000764. (doi:10.1029/2007JF000764) Conway, H. and L. A. Rasmussen. 2009. Recent thinning and migration of the Western Divide, central West Antarctica. Geophysical Research Letters 36, doi:10.1029/2009GL038072. (doi:10.1029/2009GL038072) Steen-Larsen, H., Waddington, E., & Koutnik, M. (2010). Formulating an inverse problem to infer the accumulation-rate pattern from deep internal layering in an ice sheet using a Monte Carlo approach. Journal of Glaciology, 56(196), 318-332. (doi:10.3189/002214310791968476) Keywords Antarctica Elevation Glaciers/ice Sheet Glaciology WAIS Divide WAIS Divide Ice Core