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GPS determination of the velocity and strain-rate fields on Schirmacher Glacier, central Dronning Maud Land, Antarctica

  • P.S. Sunil (a1), C.D. Reddy (a1), M. Ponraj (a1), Ajay Dhar (a1) and D. Jayapaul (a2)...

Abstract

Global positioning system (GPS) campaigns were conducted during the 2003 and 2004 austral summer seasons to obtain insight into the velocity and strain-rate distribution on Schirmacher Glacier, central Dronning Maud Land, East Antarctica. GPS data were collected at 21 sites and analyzed to estimate the site coordinates, baselines and velocities. The short-term precision of the base station, MAIT, is estimated from the daily coordinate repeatability solutions during the two years. All GPS points on the glacier were constrained with respect to MAIT and nearby International GPS Service stations. Horizontal velocities of the glacier sites lie between 1.89 ± 0.01 and 10.88 ± 0.01 ma−1 to the north-northeast, with an average velocity of 6.21 ± 0.01 m a−1. The principal strain rates provide a quantitative measurement of extension rates, which range from (0.11 ± 0.01) × 10−3 to (1.48 ± 0.85) × 10−3a−1, and shortening rates, which range from (0.04 ± 0.02) × 10−3 to (0.96 ± 0.16) × 10−3a−1. The velocity and strain-rate distributions across the GPS network in Schirmacher Glacier are spatially correlated with topography, subsurface undulations, fracture zones/crevasses and the partial blockage of the flow by nunataks and the Schirmacher Oasis.

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References

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Altamimi, Z. Sillard, P. and C. Boucher. 2002. ITRF2000: a new release of the International Terrestrial Reference Frame for earth science applications. J. Geophys. Res., 107(B10), 2214. (10.1029/2001JB000561.)
Anschütz, H. Oerter, H. Steinhage, D. and M. Scheinert. 2007. Investigating small-scale variations of the recent accumulation rate in Dronning Maud Land Coastal, East Antarctica. Ann. Glaciol., 46, 1421.
Bassis, J.N. Coleman, R. Fricker, H.A. and J.B. Minster. 2005. Episodic propagation of a rift on the Amery Ice Shelf, East Antarctica. Geophys. Res. Lett., 32(6), L06502. (10.1029/ 2004GLO22048.)
Bormann, P. and Fritzsche, D. eds. 1995. The Schirmacher Oasis, Queen Maud Land, East Antarctica, and its surroundings. Petermanns Geogr. Mitt. 289.
Damm, V. and Eisenburger, D.. 2005. Ice thickness and subice morphology in central Queen Maud Land deduced by radio echo soundings (RES). Geol. Jahrb. B97, 109127.
Davies, K. and Hartmann, G.K.. 1997. Studying the ionosphere with the Global Positioning System. Radio Sci., 32(4), 16951704.
Dietrich, R. Metzig, R. Korth, W. and J. Perlt. 1999. Combined use of field observations and SAR interferometry to study ice dynamics and mass balance in Maud Land Dronning, Antarctica. Polar Res., 18(2), 291298.
Dong, D. Herring, T.A. and R.W. King. 1998. Estimating regional deformation from a combination of space and terrestrial geodetic data. J. Geod., 72(4), 200214.
Feigl, K.L. King, R.W. and T.H. Jordan. 1990. Geodetic measurement of tectonic deformation in the Santa Maria fold and thrust belt, California. J. Geophys. Res., 95(B3), 26792699.
Feigl, K.L. and 14 others. 1993. Space geodetic measurement of crustal deformation in central and southern California, 1984–1992. J. Geophys. Res., 98(B12), 21,67721,712.
Fricker, H.A. Young, N.W. Coleman, R. Bassis, J.N. and J.B. Minster. 2005. Multi-year monitoring of rift propagation on the Amery Ice Shelf, East Antarctica. Geophys. Res. Lett., 32(2), L02502 (10.1029/2004GLO21036.)
Gloersen, P. and Campbell, W.J.. 1988. Variations in Arctic, Antarctic, and global sea ice covers during 1978–1987 as observed with the Nimbus 7 scanning multichannel microwave radiometer. J. Geophys. Res., 93(C9), 10,66610,674.
Goldstein, R.M. Engelhardt, H. Kamb, B. and R.M. Frolich. 1993. Satellite radar interferometry for monitoring ice sheet motion: application to an Antarctic ice stream. Science, 262(5139), 15251530.
Hermichen, W.D. 1995. The continental ice cover in the surroundings of the Schirmacher Oasis. In Bormann, P. and D. Fritzsche, eds. The Schirmacher Oasis, Queen Maud Land, East Antarctica, and its surroundings. (Petermanns Geogr. Mitt . 289, 221242.
Herring, T.A. 2002. GLOBK global Kalman filter VLBI and GPS analysis program, version 10.0. Cambridge, MA, Massachusetts Institute of Technology.
Herring, T.A. and King, R.W.. 1990. Geodesy by radio interferometry: the application of Kalman filtering to the analysis of very long baseline interferometry data. J. Geophys. Res., 95(B8), 12,56112,581.
Horwath, M. and 7 others. 2006. Nivlisen, an Antarctic ice shelf in Dronning Maud Land: geodetic–glaciological results from a combined analysis of ice thickness, ice surface height and ice-flow observations. J. Glaciol., 52(176), 1730.
Joughin, I. Rignot, E. Rosanova, C.E. Lucchitta, B.K. and J. Bohlander. 2003. Timing of recent accelerations of Pine Island Glacier, Antarctica. Geophys. Res. Lett., 30(13), 1706. (10.1029/ 2003GL017609.)
King, M. 2001. The dynamics of the Amery Ice Shelf from a combination of terrestrial and space geodetic data. (PhD thesis, University of Tasmania.)
King, M. 2004. Rigorous GPS data processing strategies for glaciological applications. J. Glaciol., 50(171), 601607.
King, R.W. and Bock, Y.. 2002. Documentation for the GAMIT GPS analysis software, release 10.0. Cambridge, MA, Massachusetts Institute of Technology.
King, M. Coleman, R. and Nguyen, L.N.. 2003. Spurious periodic horizontal signals in sub-daily GPS position estimates. J. Geod., 77(1–2), 1521.
Korth, W. and Dietrich, R.. 1996. Ergebnisse geodätischer Arbeiten Gebiet der Schirmacher oase/Antarktika 1988–1993. Bayer. Akad. Wiss., Deut. Geod. Komm. B301.
Lawver, L.A. Cahagan, L.M. and Coffin, M.F.. 1992. The development of paleoseaways around Antarctica. In Kennett, J.P. and D.A. Warnke, eds. The Antarctic paleoenvironment: a perspective on global change, Part 1 . Washington, DC, American Geophysical Union. (Antarctic Research Series 56.)
Leibert, J. and Leonhardt, G.. 1973. Astronomic observations for determining ice movements in Station area the Vostok. Sov. Antarct. Exped. Inf. Bull., 88, 6870.
Leick, A. 1995. GPS satellite surveying. Second edition. New York, etc., John Wiley and Sons Inc.
Manson, R. Coleman, R. Morgan, P. and M. King. 2000. Ice velocities of the Lambert Glacier from static GPS observations. Earth, Planets Space, 52(11), 10311036.
Meir, M.F. 1993. Ice, climate and sea level: do we know what is happening? In Peltier, W.R., ed. Ice in the climate system . Berlin, etc., Springer-Verlag, 141160. (NATO ASI Series I: Global Environmental Change 12.)
Metzig, R. Dietrich, R. Korth, W. Perlt, J. Hartmann, R. and W. Winzer. 2000. Horizontal ice velocity estimation and grounding zone detection in the surroundings of Schirmacheroase, Antarctica, using SAR interferometry. Polar-forschung, 67(1–2), 714.
Meyer, U. Steinhage, D. Nixdorf, U. and Miller, H.. 2005. Airborne radio echo sounding survey in Central Dronning Maud Land, East Antarctica. Geol. Jahrb., B97, 129140.
Pattyn, F. and Derauw, D.. 2002. Ice-dynamic conditions of Shirase Glacier, Antarctica, inferred from ERS-SAR interferometry. J. Glaciol., 48(163), 559565.
Pattyn, F. and Naruse, R.. 2003. The nature of complex ice flow in Glacier catchment Shirase, East Antarctica. J. Glaciol., 49(166), 429436.
Ravindra, R. Chadurvedi, A. and Beg, M.J.. 2002. Melt water lakes of Schirmacher Oasis – their genetic aspects and classification. In Sahoo, D. and P.C. Pandey, eds. Advances in marine and Antarctic science . New Delhi, APH Publishing Corporation.
Rignot, E. Casassa, G. Gogineni, P. Krabill, W. Rivera, A. and R. Thomas. 2004. Accelerated ice discharge from the Antarctic Peninsula following the collapse of Larsen B ice shelf. Geophys. Res. Lett., 31(18), L18401. (10.1029/2004GL020697.)
Sengupta, S. 1986. Geology of Schirmacher Range (Dakshin Gangotri), East Antarctica. Third Indian Expedition to Antarctica, Scientific Report. New Dehli, Department of Ocean Development, 187217. (Tech. Publ. No. 3.)
Serpelloni, E. Anzidei, M. Baldi, P. Casula, G. and A. Galvani. 2005. Crustal velocity and strain-rate fields in Italy and surrounding regions: new results from the analysis of permanent and non-permanent GPS networks. Geophys. J. Int., 161(3), 861880.
Testut, L. Hurd, R. Coleman, R. Rémy, F. and Legrésy, B.. 2003. Comparison between computed balance velocities and GPS measurements in the Lambert Glacier basin, East Antarctica. Ann. Glaciol., 37, 337343.
Vey, S. and 10 others. 2002. GPS measurements of ocean loading and its impact on zenith tropospheric delay estimates: a case study in Brittany, France. J. Geod., 76(8), 419427.
Wingham, D.J. Ridout, A.L. Scharroo, R. Arthern, R.J. and C.K. Shum. 1998. Antarctic elevation change from 1992 to 1996. Science, 282(5388), 456458.
Zwally, H.J. and 15 others. 2002. ICESat’s laser measurements of polar ice, atmosphere, ocean and land. J. Geodyn., 34(3–4), 405445.

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