Items where Author is "Rack, Wolfgang"

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Number of items: 70.

Conference -Talk

Dierking, W. , Linow, S. and Rack, W. (2012)
Snow accumulation over the ice sheets: How reliable is the retrieval from satellite data? ,

Earth Observation And Cryosphere Science, ESA-ESRIN, Frascati (Rome), Italy, 13 November 2012 - 16 November 2012 .

hdl:10013/epic.40398

Article

Neckel, N. , Drews, R. , Rack, W. and Steinhage, D. (2012)
Basal melting at the Ekström Ice Shelf, Antarctica, estimated from mass flux divergence ,

Annals of Glaciology, INT GLACIOL SOC, 53 (60), pp. 294-302 .

doi:10.3189/2012AoG60A167 , hdl:10013/epic.40157

Article

Dierking, W. , Linow, S. and Rack, W. (2012)
Towards a robust retrieval of snow accumulation over the Antarctic ice sheet using satellite radar ,

Journal of Geophysical Research-Atmospheres, AMER GEOPHYSICAL UNION .

doi:10.1029/2011JD017227

Conference -Talk

Neckel, N. , Drews, R. and Rack, W. (2011)
Talk about Diploma thesis: "Surface velocities in the hinterland of the Neumayer III station (Antarctica) derived from SAR-interferometry" ,

Arbeitskreis Fernerkundung , Würzburg .

hdl:10013/epic.38312

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Article

Bindschadler, R. , Choi, H. , Wichlacz, A. , Bingham, B. , Bohlander, J. , Brunt, K. , Corr, H. , Drews, R. , Fricker, H. , Hall, M. , Hindmarsh, R. , Kohler, J. , Padman, L. , Rack, W. , Rotschky, G. , Urbini, S. , Vornberger, P. and Young, N. (2011)
Getting around Antarctica: New high-resolution mappings of the grounded and freely-floating boundaries of the Antarctic ice sheet created for the International Polar Year ,

The Cryosphere .

doi:10.5194/tc-5-569-2011 , hdl:10013/epic.36917

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Conference -Poster

Drews, R. , Eisen, O. , Rack, W. , Steinhage, D. and Weikusat, I. (2010)
Anisotropic backscatter in ice-penetrating radar data: potential mechanisms and implications ,

24. Internationale Polartagung der Deutschen Gesellschaft für Polarforschung Obergurgl/Österreich. 10. September 2010. .

hdl:10013/epic.35328

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Conference -Poster

Drews, R. , Eisen, O. , Neckel, N. , Rack, W. and Steinhage, D. (2010)
Anisotropic radar reflection in ice sheets: Potential mechanisms and implications ,

Antarctica New Zealand's Annual Antarctic Conference, 5-7 July 2010, University of Canterbury, Christchurch, New Zealand. .

hdl:10013/epic.35762

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Conference -Poster

Neckel, N. , Drews, R. , Eisen, O. , Rack, W. and Steinhage, D. (2010)
Surface velocities and mass flux in the vicinity and hinterland of the Neumayer III station (Antarctica) ,

24. Internationale Polartagung der Deutschen Gesellschaft für Polarforschung. .

hdl:10013/epic.35225

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Conference -Poster

Linow, S. , Dierking, W. and Rack, W. (2009)
Estimating Snow Accumulation from Microwave Remote Sensing ,

EGU General Assembly 2009, Vienna. .

hdl:10013/epic.32906

Article

Drews, R. , Rack, W. , Wesche, C. and Helm, V. (2009)
A spatially adjusted elevation model in Dronning Maud Land, Antarctica, based on differential SAR Interferometry ,

IEEE Transactions on Geoscience and Remote Sensing, 47 (8), pp. 2501-2509 .

doi:10.1109/TGRS.2009.2016081 , hdl:10013/epic.33171

Article

Dunse, T. , Eisen, O. , Helm, V. , Rack, W. , Steinhage, D. and Parry, V. (2008)
Characteristics and small-scale variability of GPR signals and their relation to snow accumulation in Greenland's percolation zone ,

Journal of Glaciology, 54 (185), pp. 333-342 .

hdl:10013/epic.31451

Conference -Talk

Drews, R. , Rack, W. , Wesche, C. and Steinhage, D. (2008)
Surface topography and massflux of the Antarctic ice sheet in western Dronning Maud Land, derived by differential SAR interferomety ,

EGU General Assembly 2008. .

hdl:10013/epic.30442

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Article

Jansen, D. , Schodlok, M. and Rack, W. (2007)
Basal melting of A-38B: A physical model constrained by satellite observations ,

Remote Sensing of Environment., 111 (2), 195-203 .

doi:10.1016/j.rse.2007.03.022 , hdl:10013/epic.34447

Conference -Poster

Wesche, C. , Drews, R. , Steinhage, D. and Rack, W. (2007)
Precise surface topography in Dronning Maud Land, Antarctica, based on ground based kinematic GPS measurements ,

International Syposium on snow science, Moscow, RussiaSep. 2007. .

hdl:10013/epic.27038

Article

Helm, V. , Rack, W. , Cullen, R. , Nienow, P. , Mair, D. , Parry, V. and Wingham, D. J. (2007)
Winter accumulation in the percolation zone of Greenland measured by airborne radar altimeter ,

Geophys. Res. Lett, 34, L06501. .

doi:10.1029/2006GL029185 , hdl:10013/epic.27029

Conference -Talk

Jansen, D. , Timmermann, R. , Schodlok, M. , Rack, W. and Sandhäger, H. (2006)
Basal melting of tabular icebergs, model results ,

Antarctic Peninsula Climate Variability Workshop, 14-16 May, Boulder, USA. .

hdl:10013/epic.25421

Conference -Poster

Steinhage, D. , Rack, W. , Wesche, C. , Rotschky, G. and Gernandt, H. (2006)
Comparison of surface topography data-sets along new proposed flight routes in Dronning Maud Land and adjacent areas ,

12th Symposium on Antarctic Logistics and Operations, organised by the COMNAP Standing Committee on Antarctic Logistics and Operations (SCALOP), Hobart, Tasmania, AustraliaJuly 2006. .

hdl:10013/epic.26289

Article

Helm, V. , Hendricks, S. , Göbell, S. , Rack, W. , Haas, C. , Nixdorf, U. and Boebel, T. (2006)
CryoVEx 2004 and 2005 (BoB) data acquisition and final report ,

Alfred Wegener Institute, Bremerhaven, Germany. .

hdl:10013/epic.34417

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Conference -Poster

Dunse, T. , Helm, V. , Eisen, O. , Rack, W. and Steinhage, D. (2006)
The Cryosat land ice validation experiment 2004 Part II: Ground-based measurements of the firn structure using GPR ,

EGU General Assembly, Vienna, Austria 07 April 2006. .

hdl:10013/epic.24939

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Conference -Poster

Helm, V. , Cullen, R. and Rack, W. (2006)
The Cryosat land ice validation experiment CryoVex2004 Part I: ASIRAS vs. laser altimeter measurements ,

EGU General Assembly, Vienna, Austria 07 April 2006. .

hdl:10013/epic.26981

Conference -Poster

Helm, V. and Rack, W. (2006)
The Cryosat land ice validation experiment CryoVex2004 Part I: ASIRAS vs. laser altimeter measurements ,

66. Jahrestagung der Deutschen Geophysikalischen Gesellschaft, 6.-9. März, Bremen. .

hdl:10013/epic.26982

Conference -Conference paper

Cullen, R. , Davidson, M. W. J. , Drinkwater, M. R. , Francis, C. R. , Haas, C. , Hawley, R. L. , Mavrocordatos, C. M. , Morris, E. M. , Rack, W. , Ratier, G. , Viau, P. and Wingham, D. J. (2006)
ESAs new range of radar altimeters for the extraction of geophysical parameters from land, sea ice and ocean surfaces ,

Proceedings of the Symposium on 15 Years of Progress in Radar Altimetry, 13-18 March 2006, Venice, Italy, Paper No. 507, ESA SP-614, July 2006. .

hdl:10013/epic.26071

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Article

Steinhage, D. , Nixdorf, U. , Rack, W. and Miller, H. (2006)
Flugzeuggestütztes EMR und Anwendungsbeispiele aus den Polarregionen ,

Mitteilungen der Deutschen Geophysikalischen Gesellschaft,Sonderband II/2006, pp. 55-67 .

hdl:10013/epic.24940

Conference -Talk

Steinhage, D. , Nixdorf, U. , Rack, W. and Miller, H. (2006)
Flugzeuggestütztes EMR und Anwendungsbeispiele aus den Polarregionen ,

DGG Kolloquium Georadar. Jahrestagung der Deutschen Geophysikalischen Gesellschaft. .

hdl:10013/epic.24941

Conference -Poster

Wesche, C. , Rack, W. , Eisen, O. and Steinhage, D. (2006)
GPS vs. ICESat: a comparison of two elevation models in Dronning Maud Land, Antarctica ,

General Assembly of the European Geosciences Union, 02.-07.04.2006 Vienna, Austria. .

hdl:10013/epic.24451

Conference -Poster

Steinhage, D. , Rack, W. , Fujita, S. , Nogi, Y. , Jokat, W. , Shiraishi, K. and Herber, A. (2006)
Massflux investigations on Shirasebreen, Dronning Maud Land, Antarctica ,

2ND SCAR OPEN SCIENCE CONFERENCE, 12-14 JUL, HOBART, AUSTRALIA. .

hdl:10013/epic.26290

Article

Anschütz, H. , Eisen, O. , Rack, W. and Scheinert, M. (2006)
Periodic Surface Features in Coastal East Antarctica ,

Geophysical research letters, 33, L22501 .

doi:10.1029/2006GL027871 , hdl:10013/epic.25447

Article

Rotschky, G. , Rack, W. , Dierking, W. and Oerter, H. (2006)
Retrieving Snowpack Properties and Accumulation Estimates from Combination of SAR and Scatterometer Measurements ,

IEEE Transactions on Geoscience and Remote Sensing, 44 (4), pp. 943-956 .

doi:10.1109/TGRS.2005.862524 , hdl:10013/epic.23031

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Conference -Poster

Jansen, D. , Sandhaeger, H. , Rack, W. and Schodlok, M. (2006)
Validation of iceberg evolution model by ICESAT altimetry ,

EGU General Assembly, Geophysical Research Abstracts .

hdl:10013/epic.38220

Conference -Poster

Dunse, T. , Helm, V. , Eisen, O. and Rack, W. (2006)
The internal layering of snow along a section of the EGIG-line, western Greenland, derived from GPR and ASIRAS-measurements ,

66. Jahrestagung der Deutschen Geophysikalischen Gesellschaft, 6.-9. März, Bremen. .

hdl:10013/epic.24938

Conference -Poster

Herber, A. , Bartsch, I. , Birnbaum, G. , Gernandt, H. , Haas, C. , Hartmann, J. , Hass, C. , Jacobi, H. W. , Jokat, W. , Lemke, P. , Lüpkes, C. , Miller, H. , Neuber, R. , Nixdorf, U. , Rack, W. , Steinhage, D. and Treffeisen, R. (2005)
AWI aircraft operations in the last 20 years and future prospects ,

22. Internationale Polartagung Deutsche Gesellschaft für Polarforschung, 18-24 Sept., Jena, Germany. .

hdl:10013/epic.24251

Conference -Talk

Rotschky, G. , Rack, W. and Oerter, H. (2005)
Abschätzung der physikalisch-morphologischen Eigenschaften sowie Akkumulation der polaren Schneedecke mit aktiven Mikrowellensensoren in Dronning Maud Land, Antarktis. ,

22. Internationale Polartagung, 18.-24. September 2005, Jena, Deutschland. .

hdl:10013/epic.24803

Conference -Talk

Wesche, C. , Eisen, O. , Steinhage, D. , Rack, W. and Oerter, H. (2005)
Auswertung und Interpretation der Oberflächentopographie und -geschwindigkeit des Eisschildes in Dronning Maud Land, Antarktis, aus GPS-Messungen ,

22. Internationale Polartagung, Deutsche Gesellschaft für Polarforschung, vom 18. bis 24. September 2005 in Jena. .

hdl:10013/epic.22800

Article

Eisen, O. , Rack, W. , Nixdorf, U. and Wilhelms, F. (2005)
Characteristics of accumulation in the vicinity of the EPICA deep-drilling site in Dronning Maud Land, Antarctica ,

Annals of Glaciology, 41 , pp. 41-46 .

hdl:10013/epic.21131

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Article

Jansen, D. , Sandhäger, H. and Rack, W. (2005)
Evolution of tabular iceberg A-38B, observation and simulation ,

Forum for Research into Ice Shelf Processes (FRISP), Report, 16 , pp. 13-17 .

hdl:10013/epic.22301

Conference -Poster

Jansen, D. , Sandhaeger, H. and Rack, W. (2005)
Influence of inlets on large tabular iceberg evolution ,

EGU General Assembly , Geophysical Research Abstracts, Vol. 7 .

hdl:10013/epic.27970

Article

Jansen, D. , Sandhäger, H. and Rack, W. (2005)
Model experiments on large tabular iceberg evolution: ablation and strain thinning ,

Journal of glaciology, 51 (174), pp. 363-372 .

hdl:10013/epic.21690

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Article

Sandhäger, H. , Rack, W. and Jansen, D. (2005)
Model investigations of Larsen B Ice Shelf dynamics prior to the breakup ,

Forum for Research into Ice Shelf Processes FRISP) Report No.16, pp. 5-12 .

hdl:10013/epic.22267

Conference -Invited talk

Rack, W. (2004)
Anwendungsbeispiele von Synthetischem Apertur Radar (SAR) - Polargebiete und alpiner Raum ,

OHB Technology AG, Bremen. August 2004 .

hdl:10013/epic.21983

Conference -Poster

Rack, W. (2004)
Changes in Larsen B ice shelf dynamics prior to breakup: satellite borne observations and modelling outcomes ,

Antarctic Peninsula Workshop, 16-18 September 2004, Cambridge, UK. .

hdl:10013/epic.21574

Conference -Talk

Jansen, D. , Sandhäger, H. and Rack, W. (2004)
Evolution of tabular iceberg A-38B, observation and simulation ,

18th International FRISP Workshop, 5-7. Okt. 2004, Helgoland, Germany. .

hdl:10013/epic.22302

Conference -Poster

Steinhage, D. , Rack, W. , Nixdorf, U. and Miller, H. (2004)
Ice thickness, subglacial topography, surface velocities, and mass flux of Vestraumen, West Dronning Maud Land, and adjacent areas derived from airborne radio-echo sounding and satellite remote sensing ,

SCAR Open Science Conference, 25-31 July 2004, Bremen, Germany. .

hdl:10013/epic.21118

Conference -Conference paper

Rack, W. , Nixdorf, U. , Miller, H. and Runge, H. (2004)
Improved monitoring of polar land ice dynamics by means of SAR interferometry: ICEDANCE ,

Proceedings of the Fourth International Symposium on Retrieval of Bio- and Geophysical Parameters from SAR Data for Land Applications : 16-19 November 2004, Innsbruck .

hdl:10013/epic.23489

Conference -Poster

Jansen, D. , Sandhäger, H. and Rack, W. (2004)
Model experiments on gigantic tabular iceberg evolution ,

SCAR Open Science Conference, "Antarctica and the Southern Ocean in the Global System", 25-31 Jul., Bremen, Germany. .

hdl:10013/epic.21565

Conference -Talk

Sandhäger, H. , Rack, W. and Jansen, D. (2004)
Model investigations of Larsen B Ice Shelf dynamics prior to the breakup ,

18th International FRISP Workshop, 5-7 Oct. 2004, Helgoland, Germany. .

hdl:10013/epic.22266

Conference -Poster

Rotschky, G. , Rack, W. and Oerter, H. (2004)
Multipolarizational signatures of snow compared to snowpack properties in Dronning Maud Land, Antarctica ,

SCAR Open Science Conference, 26-28.07.04, Bremen, Germany. .

hdl:10013/epic.20693

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Article

Rack, W. (2004)
Pattern of retreat and disintegration of Larsen B ice shelf, Antarctic Peninsula ,

Annals of glaciology, 39 , pp. 505-510 .

hdl:10013/epic.21804

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Conference -Conference paper

Riedl, C. , Rott, H. and Rack, W. (2004)
Recent variations of Larsen Ice Shelf, Antarctic Peninsula, observed by Envisat ,

Proc. of the Envisat & ERS Symposium, Salzburg, Austria, 6-10 September 2004 (ESA SP-572, April 2005). .

hdl:10013/epic.38206

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Conference -Invited talk

Rack, W. (2004)
Schmilzt das Eis der Antarktis? ,

VHS Krefeld. April 2004. .

hdl:10013/epic.21984

Conference -Invited talk

Rack, W. (2004)
Schnee-Eis-Eisberge, Fernerkundung und Fließverhalten von Gletschern ,

Das AWI stellt sich vor, Bremerhaven. Februar 2004 .

hdl:10013/epic.21982

Conference -Poster

Rotschky, G. , Rack, W. and Oerter, H. (2004)
Snowpack properties in Dronning Maud Land, Antarctica, compared to Envisat ASAR and Scatterometer measurements ,

4th International Symposium on Retrieval of Bio- and Geophysical Parameters from SAR Data for Land Applications, Innsbruck,Austria.-19.11.2004 .

hdl:10013/epic.22106

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Conference -Conference paper

Rotschky, G. , Rack, W. and Oerter, H. (2004)
Snowpack properties in Dronning Maud Land, Antarctica, compared to Envisat ASAR and scatterometer measurements ,

Proceedings of the Fourth International Symposium on Retrieval of Bio- and Geophysical Parameters from SAR Data for Land Applications : 16-19 Nov., Innsbruck, Austria. .

hdl:10013/epic.21883

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Conference -Conference paper

Rack, W. , Rotschky, G. , Valentine, H. , Hoffmann, F. , Oosthuizen, S. , Gernandt, H. and Miller, H. (2004)
The new traverse route from Atka Bay to SANAE IV ,

XI SCALOP Symposium : Towards the International Polar Year and Beyond ; 28 July 2004, Congress Centre, Bremen, Germany. S. 147-155 (Terra nostra ; 2004,4) .

hdl:10013/epic.21897

Article

Eisen, O. , Freitag, J. , Haas, C. , Rack, W. , Rotschky, G. and Schmitt, J. (2003)
Bowling mermaids; or How do fresh water ice balls form? ,

Journal of Glaciology, 49, 167 , pp. 605-606 .

hdl:10013/epic.19024

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Conference -Poster

Rack, W. (2003)
Grounding line detection and ice flow characteristics in Dronning Maud Land, Antarctica, based on ERS SAR interferometry and airborne ice thickness sounding ,

ESA fringe 2003 workshop, 1-5 December 2003, Frascati, Italy. .

hdl:10013/epic.21575

Conference -Poster

Oerter, H. , Fischer, H. , Kipfstuhl, J. , Rack, W. , Weller, R. , Wilhelms, F. and Graf, W. (2002)
Das Eis der Polargebiete als Klimaarchiv ,

GEO 2002. Planet Erde: Vergangenheit, Entwicklung, Zukunft.Gemeinschaftstagung von 13 wissenschaftlichen Gesellschaften der Festen Erde in der BRD, Würzburg.-5.10.2002. .

hdl:10013/epic.17891