THE ANALYSIS OF A NEW ANTARCTIC TOPOGRAPHY DATABASE: BEDMAP 2

doi:10.13679/j.jdyj.2014.2.254

Abstract

Abstract: The mass balance and stability of the Antarctic ice sheet make great contribution to the global climate change and sea level rise. Ice thickness and subglacial topography are very important to the research of Antarctic ice sheet as the basic parameters. Since the fifties of last century, people carried out a large number of ice radar , gravity and magnetic measurements for Antarctic ice sheet. These data were collected, then formed the ice thickness and subglacial topography database to render a service to ice sheet model and Earth system research. Up to now the latest achievement is BEDMAP 2. For BEDMAP 2, this paper first introduces the data sources and data processing of BEDMAP 2, then the data quality evaluation for BEDMAP 2 is discussed. The characteristics and Application of BEDMAP 2 is also analyzed. Finally, this paper makes some conclusion and outlook of the ice sheet research in China with the help of BEDMAP 2.

Key words: ice sheet, BEDMAP 2, surface, thickness, ice bed

Chen Yun, Sun Bo, Liu Chun, Cui Xiangbin, Wang Tiantian. THE ANALYSIS OF A NEW ANTARCTIC TOPOGRAPHY DATABASE: BEDMAP 2[J]. ADVANCES IN POLAR SCIENCE, 2014, 26(2): 254-261.

References

[1] 崔祥斌, 孙波, 田钢, 等. 冰雷达探测研究南极冰盖的进展与展望[J]. 地球科学进展, 2009, 24(4): 392-402.

[2] Drewry D J, Jordan S R, Jankowski E. Measured properties of the Antarctic ice sheet: surface configuration, ice thickness, volume and bedrock characteristics[J]. Annals of Glaciology, 1983, 3: 83-91.

[3] Scott Polar Research Institute, Drewry D J. Antarctica: Glaciological and Geophysical Folio[M]. University of Cambridge, Scott Polar Research Institute, 1982.

[4] Lythe M B, Vaughan D G. BEDMAP: A new ice thickness and subglacial topographic model of Antarctica[J]. Journal of Geophysical Research: Solid Earth (1978–2012), 2001, 106(B6): 11335-11351.

[5] Fretwell P, Pritchard H D, Vaughan D G, et al. Bedmap2: improved ice bed, surface and thickness datasets for Antarctica[J]. The Cryosphere Discussions, 2012, 6: 4305-4361.

[6] Hansen S E, Nyblade A A, Heeszel D S, et al. Crustal structure of the Gamburtsev Mountains, East Antarctica, from S-wave receiver functions and Rayleigh wave phase velocities[J]. Earth and Planetary Science Letters, 2010, 300(3): 395-401.

[7] Blankenship D D, Young D A, Siegert M J, et al. New constraints on the structure and dynamics of the East Antarctic Ice Sheet from the joint IPY/Ice Bridge ICECAP aerogeophysical project[C]//AGU Fall Meeting Abstracts. 2010, 1: 05.

[8] Schodlok M P, Menemenlis D, Rignot E, et al. Sensitivity of the ice-shelf/ocean system to the sub-ice-shelf cavity shape measured by NASA IceBridge in Pine Island Glacier, West Antarctica[J]. Annals of Glaciology, 2012, 53(60): 156-162.

[9] Welch B C, Jacobel R W. Analysis of deep‐penetrating radar surveys of West Antarctica, US‐ITASE 2001[J]. Geophysical research letters, 2003, 30(8).

[10] 孙波, 崔祥斌. 2007/2008 年度中国南极冰穹 A 考察新进展[J]. 极地研究, 2008, 20(4): 371-378.

[11] Rippin D M, Bamber J L, Siegert M J, et al. The role of ice thickness and bed properties on the dynamics of the enhanced-flow tributaries of Bailey Ice Stream and Slessor Glacier, East Antarctica[J]. Annals of Glaciology, 2004, 39(1): 366-372.

[12] Holt J W, Blankenship D D, Morse D L, et al. New boundary conditions for the West Antarctic Ice Sheet: Subglacial topography of the Thwaites and Smith glacier catchments[J]. Geophysical Research Letters, 2006, 33(9).

[13] Vaughan D G, Corr H F J, Ferraccioli F, et al. New boundary conditions for the West Antarctic ice sheet: Subglacial topography beneath Pine Island Glacier[J]. Geophysical Research Letters, 2006, 33(9).

[14] Ferraccioli F, Jones P C, Curtis M L, et al. Subglacial imprints of early Gondwana break‐up as identified from high resolution aerogeophysical data over western Dronning Maud Land, East Antarctica[J]. Terra Nova, 2005, 17(6): 573-579.

[15] Schutz B E, Zwally H J, Shuman C A, et al. Overview of the ICESat mission[J]. Geophysical Research Letters, 2005, 32(21): L21S01.

[16] Drinkwater M R, Haagmans R, Muzi D, et al. The GOCE gravity mission: ESA’s first core Earth explorer[C]//Proceedings of the 3rd international GOCE user workshop. 2006: 6-8.

[17] Whittaker J M, Goncharov A, Williams S E, et al. Crustal velocity and sediment thickness asymmetries along and between the conjugate Australian-Antarctic margins[J]. Mares, T.(Ed), 2012.

[18] Bamber J L, Gomez-Dans J L, Griggs J A. A new 1 km digital elevation model of the Antarctic derived from combined satellite radar and laser data–Part 1: Data and methods[J]. Cryosphere, 2009, 3(1): 101-111.

[19] Liu H, Jezek K C, Li B. Development of an Antarctic digital elevation model by integrating cartographic and remotely sensed data: A geographic information system based approach[J]. Journal of Geophysical Research: Solid Earth (1978–2012), 1999, 104(B10): 23199-23213.

[20] Timmermann R, Le Brocq A, Deen T, et al. A consistent data set of Antarctic ice sheet topography, cavity geometry, and global bathymetry[J]. Earth System Science Data, 2010, 2(2): 261-273.

[21] Tapley B D, Bettadpur S, Watkins M, et al. The gravity recovery and climate experiment: Mission overview and early results[J]. Geophysical Research Letters, 2004, 31(9).

[22] Bentley C R. The structure of Antarctica and its ice cover[C]//Research in Geophysics, Volume 2: Solid Earth and Interface Phenomena. 1964, 2: 335.

[23] Griggs J A, Bamber J L. Antarctic ice-shelf thickness from satellite radar altimetry[J]. Journal of Glaciology, 2011, 57(203): 485-498.

[24] Clarke G K C, Berthier E, Schoof C G, et al. Neural networks applied to estimating subglacial topography and glacier volume[J]. Journal of Climate, 2009, 22(8): 2146-2160.

[25] Hutchinson M F. Calculation of hydrologically sound digital elevation models[C]//Proceedings of the Third International Symposium on Spatial Data Handling. Sydney, 1988, 133.

[26] DiMarzio J, Brenner A, Schutz R, et al. GLAS/ICESat 500 m laser altimetry digital elevation model of Antarctica[J]. National Snow and Ice Data Center (NSIDC), 2007.

[27] Rippin D M, Bamber J L, Siegert M J, et al. Basal topography and ice flow in the Bailey/Slessor region of East Antarctica[J]. Journal of Geophysical Research: Earth Surface (2003–2012), 2003, 108(F1).

[28] 崔祥斌, 孙波, 田钢, 等. 东南极 Dome A 冰雷达探测: 冰厚分布和冰下地形[J]. 科学通报, 2010, 3: 010.

[29] Siegert M J. Antarctic subglacial topography and ice‐sheet evolution[J]. Earth Surface Processes and Landforms, 2008, 33(4): 646-660.

[30] Bo S, Siegert M J, Mudd S M, et al. The Gamburtsev mountains and the origin and early evolution of the Antarctic Ice Sheet[J]. Nature, 2009, 459(7247): 690-693.

[31] Taylor J, Siegert M J, Payne A J, et al. Regional-scale bed roughness beneath ice masses: Measurement and analysis[J]. Computers & geosciences, 2004, 30(8): 899-908.

[32] Siegert M J, Taylor J, Payne A J. Spectral roughness of subglacial topography and implications for former ice-sheet dynamics in East Antarctica[J]. Global and Planetary Change, 2005, 45(1): 249-263.

[33] 崔祥斌, 孙波, 张向培, 等. 极地冰盖冰雷达探测技术的发展综述[J]. 极地研究, 2009, 21(4):322-335.

[34] Hélière F, Lin C C, Corr H, et al. Radio echo sounding of Pine Island Glacier, West Antarctica: Aperture synthesis processing and analysis of feasibility from space[J]. Geoscience and Remote Sensing, IEEE Transactions on, 2007, 45(8): 2573-2582.