USAP-DC

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McMurdo Ice Shelf GPS survey of vertical motion Data DOI: https://doi.org/10.15784/601107 Cite as MacAyeal, D. R., & Banwell, A. (2018) "McMurdo Ice Shelf GPS survey of vertical motion" U.S. Antarctic Program (USAP) Data Center. doi: https://doi.org/10.15784/601107. AMD - DIF Record(s) USAP-1443126_1 Abstract Over 2 Austral summer periods in 2015/6 and 2016/17, up to 12 geodetic GPS receivers were deployed on the McMurdo Ice Shelf to study its vertical deflection in response to moving meltwater loads. (5 GPS were deployed in 2015/16, 12 in 2016/17.) The GPS receivers and antennas were supplied by UNAVCO and were Trimble NetR9’s and Zephyr Geodetic, respectively. The GPS receivers were stationary for the entire field seasons (were never moved). Following each field season, the GPS data were processed using MIT software called TRACK, which is part of the GAMIT package. The UNAVCO-run base station at McMurdo Station, approximately 16 km away from the field area, was used as part of the processing. Creator(s): MacAyeal, Douglas; Banwell, Alison Date Created: 2018-07-24 Repository: USAP-DC (current) License: Creative Commons Attribution-NonCommercial v4.0 Generic [CC BY-NC 4.0] Spatial Extent(s) West: 166.02819, East: 166.28263, South: -77.93869, North: -77.887495 Temporal Extent(s) Start: 2015-12-10 - End: 2017-01-31 Award(s) NSF 1443126 Version: 1 Related Project(s) Impact of Supraglacial Lakes on Ice-Shelf Stability References Banwell, A. F., Willis, I. C., Macdonald, G. J., Goodsell, B., & MacAyeal, D. R. (2019). Direct measurements of ice-shelf flexure caused by surface meltwater ponding and drainage. Nature communications, 10(1), 730. (doi:10.1038/s41467-019-08522-5) Keywords Antarctica Glaciers/ice Sheet Glaciology GPS Ice Flow Velocity Ice Shelf Ice-Shelf Flexure Snow/ice Surface Melt