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Antarctic ice velocities from GPS locations logged by seismic stations

Published online by Cambridge University Press:  17 November 2014

Meijian An ,
Douglas Wiens ,
Chunlei An ,
Guitao Shi ,
Yue Zhao  and
Yuansheng Li
Meijian An*
Affiliation:
Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China
Douglas Wiens
Affiliation:
Department of Earth and Planetary Science, Washington University, St Louis, MO 63130-4899, USA
Chunlei An
Affiliation:
Polar Research Institute of China, Shanghai 200136, China
Guitao Shi
Affiliation:
Polar Research Institute of China, Shanghai 200136, China
Yue Zhao
Affiliation:
Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China
Yuansheng Li
Affiliation:
Polar Research Institute of China, Shanghai 200136, China
*
[email protected]
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Abstract

In 2007–08, seismologists began deploying passive seismic stations over much of the Antarctic ice sheet. These stations routinely log their position by navigation-grade global positioning system (GPS) receivers. This location data can be used to track the stations situated on moving ice. For stations along the traverse from Zhongshan station to Dome A in East Antarctica and at the West Antarctic Ice Sheet divide the estimated velocities of the ice surface based on positions recorded by navigation-grade GPS are consistent with those obtained by high-accuracy geodetic GPS. Most of the estimated velocities have an angle difference of <28° with the steepest downhill vector of the ice surface slope at the stations. These results indicate that navigation-grade GPS measurements over several months provide reliable information on ice sheet movement of ≥1 m yr-1. With an uncertainty of ~0.3–1 m yr-1, this method is able to resolve both very slow ice velocities near Dome A and velocities of >100 m yr-1 on Thwaites Glacier. Information on ice velocity at three locations for which no data from satellite-based interferometric synthetic aperture radar are available have also been provided using this method.

Keywords

GAMSEISglacier movementnavigation-grade GPSPOLENET
Type
Physical Sciences
Information
Antarctic Science , Volume 27 , Supplement 2 , April 2015 , pp. 210 - 222
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Copyright
© Antarctic Science Ltd 2014 

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References

An, M. 2012. A simple method for determining the spatial resolution of a general inverse problem. Geophysical Journal International, 191, 849–864.CrossRefGoogle Scholar
Bindschadler, R.A. & Scambos, T.A. 1991. Satellite-image-derived velocity-field of an Antarctic ice stream. Science, 252, 242–246.Google Scholar
Bouin, M.N. & Vigny, C. 2000. New constraints on Antarctic plate motion and deformation from GPS data. Journal of Geophysical Research - Solid Earth, 105, 28 279–28 293.CrossRefGoogle Scholar
Budd, W.F., Corry, M.J. & Jacka, T.H. 1982. Results from the Amery Ice Shelf project. Annals of Glaciology, 3, 36–41.CrossRefGoogle Scholar
Cheng, X., Li, X.W., Shao, Y. & Li, Z. 2007. DINSAR measurement of glacier motion in Antarctic Grove Mountain. Chinese Science Bulletin, 52, 358–366.Google Scholar
Cuffey, K.M. & Paterson, W.S.B. 2010. The physics of glaciers, 4th ed. Burlington, MA: Elsevier, 704 pp.Google Scholar
Den Ouden, M.A.G., Reijmer, C.H., Pohjola, V., van de Wal, R.S.W., Oerlemans, J. & Boot, W. 2010. Stand-alone single-frequency GPS ice velocity observations on Nordenskiöldbreen, Svalbard. Cryosphere, 4, 593–604.Google Scholar
Dziewonski, A.M. & Anderson, D.L. 1981. Preliminary reference Earth model. Physics of the Earth and Planetary Interiors, 25, 297–356.Google Scholar
Fretwell, P., Pritchard, H.D., Vaughan, D.G. & 56 others . 2013. Bedmap2: improved ice bed, surface and thickness datasets for Antarctica. Cryosphere, 7, 375–393.CrossRefGoogle Scholar
Greve, R. & Blatter, H. 2009. Dynamics of ice sheets and glaciers. Berlin: Springer, 287 pp.Google Scholar
I-Lotus Corporation Pte . 2008. M12M timing – technical data. Available at: http://www.ilotus.com.sg/sites/all/themes/zeropoint/pdf/m12m/M12M%20Timing%20-%20TDS%20(Ver%201.0.0).pdf Google Scholar
Kiernan, R. 2001. Ice sheet surface velocities along the Lambert Glacier basin traverse route. Hobart, TAS: Antarctic Cooperative Research Centre and Australian Antarctic Division, 152 pp.Google Scholar
Manson, R., Coleman, R., Morgan, P. & King, M. 2000. Ice velocities of the Lambert Glacier from static GPS observations. Earth Planets and Space, 52, 1031–1036.CrossRefGoogle Scholar
Matsuoka, K., Rasmussen, A. & Power, D. 2011. GPS-measured ice velocities and strain data from the Ross and Amundsen Sea ice flow divide, West Antarctica. Boulder, CO: National Snow and Ice Data Center.Google Scholar
Ren, J.W., Allison, I., Xiao, C.D. & Qin, D.H. 2002. Mass balance of the Lambert Glacier basin, East Antarctica. Science in China Series D - Earth Sciences, 45, 842–850.Google Scholar
Rignot, E., Mouginot, J. & Scheuchl, B. 2011. Ice flow of the Antarctic ice sheet. Science, 333, 1427–1430.Google Scholar
Testut, L., Hurd, R., Coleman, R., Rémy, F. & Legrésy, B. 2003. Comparison between computed balance velocities and GPS measurements in the Lambert Glacier basin, East Antarctica. Annals of Glaciology, 37, 337–343.Google Scholar
Trimble Navigation 2011. Data sheet – Lassen iQ GPS module. Available at: http://trl.trimble.com/docushare/dsweb/Get/Document-184028/LasseniQ_DS.pdf Google Scholar
Van de Wal, R.S.W., Boot, W., van den Broeke, M.R., Smeets, C.J.P.P., Reijmer, C.H., Donker, J.J.A. & Oerlemans, J. 2008. Large and rapid melt-induced velocity changes in the ablation zone of the Greenland ice sheet. Science, 321, 111–113.CrossRefGoogle ScholarPubMed
Fudge, T.J., Steig, E.J., Markle, B.R. & WAIS Divide Project Members . 2013. Onset of deglacial warming in West Antarctica driven by local orbital forcing. Nature, 500, 10.1038/nature12376.Google Scholar
Wessel, P. & Smith, W.H.F. 1991. Free software helps map and display data. Eos, Transactions American Geophysical Union, 72, 10.1029/90EO00319.Google Scholar
Zandbergen, P.A. 2008. Positional accuracy of spatial data: non-normal distributions and a critique of the national standard for spatial data accuracy. Transactions in GIS, 12, 103–130.Google Scholar
Zhang, S.K., Dongchen, E., Wang, Z.M., Li, Y.S., Jin, B. & Zhou, C.X. 2008. Ice velocity from static GPS observations along the transect from Zhongshan station to Dome A, East Antarctica. Annals of Glaciology, 48, 113–118.Google Scholar
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