Items where Author is "Helm, Veit"

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Number of items: 143.

Article

Trantow, T. , Herzfeld, U. C. , Helm, V.

and Nilsson, J. (2021)
Sensitivity of glacier elevation analysis and numerical modeling to CryoSat-2 SIRAL retracking techniques ,

Computers & Geosciences, 146 , p. 104610 .

doi:https://doi.org/10.1016/j.cageo.2020.104610 , hdl:10013/epic.77800f91-ebe0-4459-af95-1713876ea3f2

Article

Abdalla, S. , Abdeh Kolahchi, A. , Adusumilli, S. , Aich Bhowmick, S. , Alou-Font, E. , Amarouche, L. , Andersen, O. B. , Antich, H. , Aouf, L. , Arbic, B. , Armitage, T. , Arnault, S. , Artana, C. , Aulicino, G. , Ayoub, N. , Badulin, S. , Baker, S. , Banks, C. , Bao, L. , Barbetta, S. , Barceló-Llull, B. , Barlier, F. , Basu, S. , Bauer-Gottwein, P. , Becker, M. , Beckley, B. , Bellefond, N. , Belonenko, T. , Benkiran, M. , Benkouider, T. , Bennartz, R. , Benveniste, J. , Bercher, N. , Berge-Nguyen, M. , Bettencourt, J. , Blarel, F. , Blazquez, A. , Blumstein, D. , Bonnefond, P. , Borde, F. , Bouffard, J. , Boy, F. , Boy, J. P. , Brachet, C. , Brasseur, P. , Braun, A. , Brocca, L. , Brockley, D. , Brodeau, L. , Brown, S. , Bruinsma, S. , Bulczak, A. , Buzzard, S. , Cahill, M. , Calmant, S. , Calzas, M. , Camici, S. , Cancet, M. , Capdeville, H. , Carabajal, C. C. , Carrere, L. , Cazenave, A. , Chassignet, E. P. , Chauhan, P. , Cherchali, S. , Chereskin, T. , Cheymol, C. , Ciani, D. , Cipollini, P. , Cirillo, F. , Cosme, E. , Coss, S. , Cotroneo, Y. , Cotton, D. , Couhert, A. , Coutin-Faye, S. , Crétaux, J. F. , Cyr, F. , d’Ovidio, F. , Darrozes, J. , David, C. , Dayoub, N. , De Staerke, D. , Deng, X. , Desai, S. , Desjonqueres, J. D. , Dettmering, D. , Di Bella, A. , Díaz-Barroso, L. , Dibarboure, G. , Dieng, H. B. , Dinardo, S. , Dobslaw, H. , Dodet, G. , Doglioli, A. , Domeneghetti, A. , Donahue, D. , Dong, S. , Donlon, C. , Dorandeu, J. , Drezen, C. , Drinkwater, M. , Du Penhoat, Y. , Dushaw, B. , Egido, A. , Erofeeva, S. , Escudier, P. , Esselborn, S. , Exertier, P. , Fablet, R. , Falco, C. , Farrell, S. L. , Faugere, Y. , Femenias, P. , Fenoglio, L. , Fernandes, J. , Fernández, J. G. , Ferrage, P. , Ferrari, R. , Fichen, L. , Filippucci, P. , Flampouris, S. , Fleury, S. , Fornari, M. , Forsberg, R. , Frappart, F. , Frery, M. l. , Garcia, P. , Garcia-Mondejar, A. , Gaudelli, J. , Gaultier, L. , Getirana, A. , Gibert, F. , Gil, A. , Gilbert, L. , Gille, S. , Giulicchi, L. , Gómez-Enri, J. , Gómez-Navarro, L. , Gommenginger, C. , Gourdeau, L. , Griffin, D. , Groh, A. , Guerin, A. , Guerrero, R. , Guinle, T. , Gupta, P. , Gutknecht, B. D. , Hamon, M. , Han, G. , Hauser, D. , Helm, V.

, Hendricks, S.

, Hernandez, F. , Hogg, A. , Horwath, M. , Idžanović, M. , Janssen, P. , Jeansou, E. , Jia, Y. , Jia, Y. , Jiang, L. , Johannessen, J. A. , Kamachi, M. , Karimova, S. , Kelly, K. , Kim, S. Y. , King, R. , Kittel, C. M. , Klein, P. , Klos, A. , Knudsen, P. , Koenig, R. , Kostianoy, A. , Kouraev, A. , Kumar, R. , Labroue, S. , Lago, L. S. , Lambin, J. , Lasson, L. , Laurain, O. , Laxenaire, R. , Lázaro, C. , Le Gac, S. , Le Sommer, J. , Le Traon, P. Y. , Lebedev, S. , Léger, F. , Legresy, B. , Lemoine, F. , Lenain, L. , Leuliette, E. , Levy, M. , Lillibridge, J. , Liu, J. , Llovel, W. , Lyard, F. , Macintosh, C. , Makhoul Varona, E. , Manfredi, C. , Marin, F. , Mason, E. , Massari, C. , Mavrocordatos, C. , Maximenko, N. , McMillan, M. , Medina, T. , Melet, A. , Meloni, M. , Mertikas, S. , Metref, S. , Meyssignac, B. , Michaël, A. , Minster, J. F. , Moreau, T. , Moreira, D. , Morel, Y. , Morrow, R. , Moyard, J. , Mulet, S. , Naeije, M. , Nerem, R. S. , Ngodock, H. , Nielsen, K. , Nilsen, J. E. Ø. , Niño, F. , Nogueira Loddo, C. , Noûs, C. , Obligis, E. , Otosaka, I. , Otten, M. , Oztunali Ozbahceci, B. , P. Raj, R. , Paiva, R. , Paniagua, G. , Paolo, F. , Paris, A. , Pascual, A. , Passaro, M. , Paul, S.

, Pavelsky, T. , Pearson, C. , Penduff, T. , Peng, F. , Perosanz, F. , Picot, N. , Piras, F. , Poggiali, V. , Poirier, É. , Ponce de León, S. , Prants, S. , Prigent, C. , Provost, C. , Pujol, M. I. , Qiu, B. , Quilfen, Y. , Rami, A. , Raney, R. K. , Raynal, M. , Remy, E. , Rémy, F. , Restano, M. , Richardson, A. , Richardson, D. , Ricker, R.

, Ricko, M. , Rinne, E. , Rose, S. K. , Rosmorduc, V. , Rudenko, S. , Ruiz, S. , Ryan, B. J. , Salaün, C. , Sanchez-Roman, A. , Sandberg Sørensen, L. , Sandwell, D. , Saraceno, M. , Scagliola, M. , Schaeffer, P. , Scharffenberg, M. G. , Scharroo, R. , Schiller, A. , Schneider, R. , Schwatke, C. , Scozzari, A. , Ser-giacomi, E. , Seyler, F. , Shah, R. , Sharma, R. , Shaw, A. , Shepherd, A. , Shriver, J. , Shum, C. , Simons, W. , Simonsen, S. B. , Slater, T. , Smith, W. , Soares, S. , Sokolovskiy, M. , Soudarin, L. , Spatar, C. , Speich, S. , Srinivasan, M. , Srokosz, M. , Stanev, E. , Staneva, J. , Steunou, N. , Stroeve, J. , Su, B. , Sulistioadi, Y. B. , Swain, D. , Sylvestre-baron, A. , Taburet, N. , Tailleux, R. , Takayama, K. , Tapley, B. , Tarpanelli, A. , Tavernier, G. , Testut, L. , Thakur, P. K. , Thibaut, P. , Thompson, L. , Tintoré, J. , Tison, C. , Tourain, C. , Tournadre, J. , Townsend, B. , Tran, N. , Trilles, S. , Tsamados, M. , Tseng, K. H. , Ubelmann, C. , Uebbing, B. , Vergara, O. , Verron, J. , Vieira, T. , Vignudelli, S. , Vinogradova Shiffer, N. , Visser, P. , Vivier, F. , Volkov, D. , von Schuckmann, K. , Vuglinskii, V. , Vuilleumier, P. , Walter, B. , Wang, J. , Wang, C. , Watson, C. , Wilkin, J. , Willis, J. , Wilson, H. , Woodworth, P. , Yang, K. , Yao, F. , Zaharia, R. , Zakharova, E. , Zaron, E. D. , Zhang, Y. , Zhao, Z. , Zinchenko, V. and Zlotnicki, V. (2021)
Altimetry for the future: Building on 25 years of progress ,

Advances in Space Research .

doi:https://doi.org/10.1016/j.asr.2021.01.022 , hdl:10013/epic.112153d4-dca7-42a8-b7a8-ae8298998653

Article

Hofstede, C.

, Beyer, S.

, Corr, H. , Eisen, O.

, Hattermann, T. , Helm, V.

, Neckel, N.

, Smith, E. C.

, Steinhage, D.

, Zeising, O.

and Humbert, A.

(2021)
Evidence for a grounding line fan at the onset of a basal channel under the ice shelf of Support Force Glacier, Antarctica, revealed by reflection seismics ,

The Cryosphere, 15 (3), pp. 1517-1535 .

doi:https://doi.org/10.5194/tc-15-1517-2021 , hdl:10013/epic.91e41f86-a04e-4d73-bce6-bccfbe7bdfa5

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Article

Jutila, A.

, King, J. , Paden, J. , Ricker, R.

, Hendricks, S.

, Polashenski, C. , Helm, V.

, Binder, T. and Haas, C.

(2021)
High-Resolution Snow Depth on Arctic Sea Ice From Low-Altitude Airborne Microwave Radar Data ,

IEEE Transactions on Geoscience and Remote Sensing, pp. 1-16 .

doi:https://doi.org/10.1109/TGRS.2021.3063756 , hdl:10013/epic.8b2fce9a-a8a8-4ea1-a158-3178e3174597

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Article

Carlsen, T. , Birnbaum, G.

, Ehrlich, A. , Helm, V.

, Jäckel, E. , Schäfer, M. and Wendisch, M. (2020)
Parameterizing anisotropic reflectance of snow surfaces from airborne digital camera observations in Antarctica ,

The Cryosphere .

doi:https://doi.org/10.5194/tc-14-3959-2020 , hdl:10013/epic.ad095254-8b1f-42f6-bf0a-91dd2a87c64c

Article

Otosaka, I. N. , Shepherd, A. , Casal, T. G. D. , Coccia, A. , Davidson, M. , Di Bella, A. , Fettweis, X. , Forsberg, R. , Helm, V.

, Hogg, A. E. , Hvidegaard, S. M. , Lemos, A. , Macedo, K. , Kuipers Munneke, P. , Parrinello, T. , Simonsen, S. B. , Skourup, H. and Sørensen, L. S. (2020)
Surface Melting Drives Fluctuations in Airborne Radar Penetration in West Central Greenland ,

Geophysical Research Letters, 47 (17), e2020GL088293 .

doi:https://doi.org/10.1029/2020GL088293 , hdl:10013/epic.05040821-dd2e-414e-b932-d13a445ac8ca

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Article

Krieger, L. , Strößenreuther, U. , Helm, V.

, Floricioiu, D. and Horwath, M. (2020)
Synergistic Use of Single-Pass Interferometry and Radar Altimetry to Measure Mass Loss of NEGIS Outlet Glaciers between 2011 and 2014 ,

Remote Sensing, 12 (6), p. 996 .

doi:https://doi.org/10.3390/rs12060996 , hdl:10013/epic.6af8354f-b67b-4675-b759-d03499893584

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Article

Franke, S.

, Jansen, D.

, Binder, T. , Dörr, N.

, Helm, V.

, Paden, J. , Steinhage, D.

and Eisen, O.

(2020)
Bed topography and subglacial landforms in the onset region of the Northeast Greenland Ice Stream ,

Annals of Glaciology, 61 (81), pp. 143-153 .

doi:https://doi.org/10.1017/aog.2020.12 , hdl:10013/epic.b1caa2bd-9f06-4fef-8438-f165a2c84e39

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Article

Shepherd, A. , Ivins, E. , Rignot, E. , Smith, B. , van den Broeke, M. , Velicogna, I. , Whitehouse, P. , Briggs, K. , Joughin, I. , Krinner, G. , Nowicki, S. , Payne, T. , Scambos, T. , Schlegel, N. , A, G. , Agosta, C. , Ahlstrøm, A. , Babonis, G. , Barletta, V. R. , Bjørk, A. A. , Blazquez, A. , Bonin, J. , Colgan, W. , Csatho, B. , Cullather, R. , Engdahl, M. E. , Felikson, D. , Fettweis, X. , Forsberg, R. , Hogg, A. E. , Gallee, H. , Gardner, A. , Gilbert, L. , Gourmelen, N. , Groh, A. , Gunter, B. , Hanna, E. , Harig, C. , Helm, V.

, Horvath, A. , Horwath, M. , Khan, S. , Kjeldsen, K. K. , Konrad, H. , Langen, P. L. , Lecavalier, B. , Loomis, B. , Luthcke, S. , McMillan, M. , Melini, D. , Mernild, S. , Mohajerani, Y. , Moore, P. , Mottram, R. , Mouginot, J. , Moyano, G. , Muir, A. , Nagler, T. , Nield, G. , Nilsson, J. , Noël, B. P. Y. , Otosaka, I. , Pattle, M. E. , Peltier, W. R. , Pie, N. , Rietbroek, R. , Rott, H. , Sandberg Sørensen, L. , Sasgen, I.

, Save, H. , Scheuchl, B. , Schrama, E. , Schröder, L.

, Seo, K. W. , Simonsen, S. B. , Slater, T. , Spada, G. , Sutterley, T. , Talpe, M. , Tarasov, L. , van de Berg, W. J. , van der Wal, W. , van Wessem, M. , Vishwakarma, B. D. , Wiese, D. , Wilton, D. , Wagner, T. , Wouters, B. , Wuite, J. and The IMBIE Team, T. I. T. (2020)
Mass balance of the Greenland Ice Sheet from 1992 to 2018 ,

Nature, 579 (7798), pp. 233-239 .

doi:https://doi.org/10.1038/s41586-019-1855-2 , hdl:10013/epic.e009a4d5-e81a-423d-b650-eaca4d9a3449

Article

Morlighem, M. , Rignot, E. , Binder, T. , Blankenship, D. , Drews, R. , Eagles, G.

, Eisen, O.

, Ferraccioli, F. , Forsberg, R. , Fretwell, P. , Goel, V. , Greenbaum, J. S. , Gudmundsson, H. , Guo, J. , Helm, V.

, Hofstede, C.

, Howat, I. , Humbert, A. , Jokat, W.

, Karlsson, N. B. , Lee, W. S. , Matsuoka, K. , Millan, R. , Mouginot, J. , Paden, J. , Pattyn, F. , Roberts, J. , Rosier, S. , Ruppel, A. , Seroussi, H. , Smith, E. C.

, Steinhage, D.

, Sun, B. , Broeke, M. R. v. d. , Ommen, T. D. v. , Wessem, M. v. and Young, D. A. (2020)
Deep glacial troughs and stabilizing ridges unveiled beneath the margins of the Antarctic ice sheet ,

Nature Geoscience, 13 , pp. 132-137 .

doi:https://doi.org/10.1038/s41561-019-0510-8 , hdl:10013/epic.4e481a2c-cfab-47f1-843a-27ddc0d83ae0

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Article

Meloni, M. , Bouffard, J. , Parrinello, T. , Dawson, G. , Garnier, F. , Helm, V.

, Di Bella, A. , Hendricks, S.

, Ricker, R.

, Webb, E. , Wright, B. , Nielsen, K. , Lee, S. , Passaro, M. , Scagliola, M. , Simonsen, S. B. , Sandberg Sørensen, L. , Brockley, D. , Baker, S. , Fleury, S. , Bamber, J. , Maestri, L. , Skourup, H. , Forsberg, R. and Mizzi, L. (2020)
CryoSat Ice Baseline-D validation and evolutions ,

The Cryosphere, 14 (6), pp. 1889-1907 .

doi:https://doi.org/10.5194/tc-14-1889-2020 , hdl:10013/epic.17ae3518-4f03-485c-b4d7-506ab900a023

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Article

Neckel, N.

, Zeising, O.

, Steinhage, D.

, Helm, V.

and Humbert, A. (2020)
Seasonal Observations at 79°N Glacier (Greenland) From Remote Sensing and in situ Measurements ,

Frontiers in Earth Science, 8 , p. 142 .

doi:https://doi.org/10.3389/feart.2020.00142 , hdl:10013/epic.99ee180d-a69b-4b0a-92e2-af19767fee8f

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Article

Antonova, S.

, Thiel, C. , Höfle, B. , Anders, K. , Helm, V.

, Zwieback, S. , Marx, S. and Boike, J.

(2019)
Estimating tree height from TanDEM-X data at the northwestern Canadian treeline ,

Remote Sensing of Environment, 231 .

doi:https://doi.org/10.1016/j.rse.2019.111251 , hdl:10013/epic.6478967e-aa02-4a25-ad83-2a554b58b229

Article

Rückamp, M.

, Neckel, N.

, Berger, S.

, Humbert, A. and Helm, V.

(2019)
Calving Induced Speedup of Petermann Glacier ,

Journal of Geophysical Research-Earth Surface, 124 , pp. 216-228 .

doi:https://doi.org/10.1029/2018JF004775 , hdl:10013/epic.f4400cbb-57b1-4a23-8a02-fc8a0a4c24b5

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Article

Humbert, A. , Steinhage, D.

, Helm, V.

, Beyer, S.

and Kleiner, T.

(2018)
Missing evidence of widespread subglacial lakes at Recovery Glacier, Antarctica ,

Journal of Geophysical Research: Earth Surface, 123 , pp. 2802-2826 .

doi:https://doi.org/10.1029/2017JF004591 , hdl:10013/epic.2cfa7ae5-c211-47d2-9a82-f9e136d64478

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Article

Zhang, B. , Zhang, E. , Liu, L. , Khan, S. A. , van Dam, T. , Yao, Y. , Bevis, M. and Helm, V.

(2018)
Geodetic measurements reveal short-term changes of glacial mass near Jakobshavn Isbræ (Greenland) from 2007 to 2017 ,

Earth and Planetary Science Letters, 503 , pp. 216-226 .

doi:https://doi.org/10.1016/j.epsl.2018.09.029 , hdl:10013/epic.f8a92688-0178-4d94-bc9d-be80308d9a57

Article

Sandberg Sørensen, L. , Simonsen, S. , Langley, K. , Gray, L. , Helm, V.

, Nilsson, J. , Stenseng, L. , Skourup, H. , Forsberg, R. and Davidson, M. (2018)
Validation of CryoSat-2 SARIn Data over Austfonna Ice Cap Using Airborne Laser Scanner Measurements ,

Remote Sensing, 10 (9), p. 1354 .

doi:https://doi.org/10.3390/rs10091354 , hdl:10013/epic.c8e347b9-8135-42bb-83ab-c3a13dd4822f

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Article

The IMBIE team, Shepherd, A. , Sasgen, I.

and Helm, V.

(2018)
Mass balance of the Antarctic Ice Sheet from 1992 to 2017 ,

Nature, 558 (7709), pp. 219-222 .

doi:https://doi.org/10.1038/s41586-018-0179-y , hdl:10013/epic.7f0d293c-6cf4-4659-827e-d2a3b39aebfb

Article

Shepherd, A. , Ivins, E. , Rignot, E. , Smith, B. , van den Broeke, M. , Velicogna, I. , Whitehouse, P. , Briggs, K. , Joughin, I. , Krinner, G. , Nowicki, S. , Payne, T. , Scambos, T. , Schlegel, N. , A, G. , Agosta, C. , AhlstrÃ¸m, A. , Babonis, G. , Barletta, V. , Blazquez, A. , Bonin, J. , Csatho, B. , Cullather, R. , Felikson, D. , Fettweis, X. , Forsberg, R. , Gallee, H. , Gardner, A. , Gilbert, L. , Groh, A. , Gunter, B. , Hanna, E. , Harig, C. , Helm, V.

, Horvath, A. , Horwath, M. , Khan, S. , Kjeldsen, K. K. , Konrad, H. , Langen, P. , Lecavalier, B. , Loomis, B. , Luthcke, S. , McMillan, M. , Melini, D. , Mernild, S. , Mohajerani, Y. , Moore, P. , Mouginot, J. , Moyano, G. , Muir, A. , Nagler, T. , Nield, G. , Nilsson, J. , Noel, B. , Otosaka, I. , Pattle, M. E. , Peltier, W. R. , Pie, N. , Rietbroek, R. , Rott, H. , Sandberg-SÃ¸rensen, L. , Sasgen, I.

, Save, H. , Scheuchl, B. , Schrama, E. , Schröder, L.

, Seo, K. W. , Simonsen, S. , Slater, T. , Spada, G. , Sutterley, T. , Talpe, M. , Tarasov, L. , van de Berg, W. J. , van der Wal, W. , van Wessem, M. , Vishwakarma, B. D. , Wiese, D. , Wouters, B. and The IMBIE team, T. I. t. (2018)
Mass balance of the Antarctic Ice Sheet from 1992 to 2017 ,

Nature, 558 (7709), pp. 219-222 .

doi:https://doi.org/10.1038/s41586-018-0179-y , hdl:10013/epic.58ba5281-747b-44e4-9497-77af46fa3069

Article

King, J. , Skourup, H. , Hvidegaard, S. M. , Rösel, A. , Gerland, S. , Spreen, G. , Polashenski, C. , Helm, V.

and Liston, G. E. (2018)
Comparison of Freeboard Retrieval and Ice Thickness Calculation From ALS, ASIRAS, and CryoSat-2 in the Norwegian Arctic to Field Measurements Made During the N-ICE2015 Expedition ,

Journal of Geophysical Research: Oceans, 123 (2), pp. 1123-1141 .

doi:https://doi.org/10.1002/2017JC013233 , hdl:10013/epic.833f804b-dfe8-4605-84d6-aedc6bfca636

Article

Karlsson, N. B. , Binder, T. , Eagles, G.

, Helm, V.

, Pattyn, F. , Van Liefferinge, B. and Eisen, O.

(2018)
Glaciological characteristics in the Dome Fuji region and new assessment for “Oldest Ice” ,

The Cryosphere, 12 (7), pp. 2413-2424 .

doi:https://doi.org/10.5194/tc-12-2413-2018 , hdl:10013/epic.c347a7b3-cc66-431d-a41a-4494e50a0baf

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Article

Kjær, K. H. , Larsen, N. K. , Binder, T. , Bjørk, A. A. , Eisen, O.

, Fahnestock, M. A. , Funder, S. , Garde, A. A. , Haack, H. , Helm, V.

, Houmark-Nielsen, M. , Kjeldsen, K. K. , Khan, S. A. , Machguth, H. , McDonald, I. , Morlighem, M. , Mouginot, J. , Paden, J. D. , Waight, T. E. , Weikusat, C. , Willerslev, E. and MacGregor, J. A. (2018)
A large impact crater beneath Hiawatha Glacier in northwest Greenland ,

Science Advances, 4 (11), eaar8173 .

doi:https://doi.org/10.1126/sciadv.aar8173 , hdl:10013/epic.df3645ba-80d7-477b-ba57-1df014f8de5f

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Article

Berger, S. , Drews, R. , Helm, V.

, Sun, S. and Pattyn, F. (2017)
Detecting high spatial variability of ice shelf basal mass balance, Roi Baudouin Ice Shelf, Antarctica ,

The Cryosphere, 11 (6), pp. 2675-2690 .

doi:https://doi.org/10.5194/tc-11-2675-2017 , hdl:10013/epic.c484abdf-a73b-4707-80cf-acc88cad573f

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Article

Obu, J. , Lantuit, H.

, Grosse, G.

, Günther, F.

, Sachs, T. , Helm, V.

and Fritz, M.

(2017)
Coastal erosion and mass wasting along the Canadian Beaufort Sea based on annual airborne LiDAR elevation data ,

Geomorphology, 293 , pp. 331-346 .

doi:https://doi.org/10.1016/j.geomorph.2016.02.014 , hdl:10013/epic.47349

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Article

Schwegmann, S. , Rinne, E. , Ricker, R.

, Hendricks, S.

and Helm, V.

(2016)
About the consistency between Envisat and CryoSat-2 radar freeboard retrieval over Antarctic sea ice ,

Cryosphere .

doi:https://doi.org/10.5194/tc-10-1415-2016 , hdl:10013/epic.48202

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Article

Martín-Español, A. , Zammit-Mangion, A. , Clarke, P. J. , Flament, T. , Helm, V.

, King, M. A. , Luthcke, S. B. , Petrie, E. , Rémy, F. , Schön, N. , Wouters, B. and Bamber, J. L. (2016)
Spatial and temporal Antarctic Ice Sheet mass trends, glacio-isostatic adjustment, and surface processes from a joint inversion of satellite altimeter, gravity, and GPS data ,

Journal of Geophysical Research: Earth Surface, 121 (2), pp. 182-200 .

doi:https://doi.org/10.1002/2015JF003550 , hdl:10013/epic.48375

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Article

Radosavljevic, B.

, Lantuit, H.

, Pollard, W. , Overduin, P.

, Couture, N. J. , Sachs, T. , Helm, V.

and Fritz, M.

(2015)
Erosion and Flooding—Threats to Coastal Infrastructure in the Arctic: A Case Study from Herschel Island, Yukon Territory, Canada ,

Estuaries and Coasts, pp. 1-16 .

doi:https://doi.org/10.1007/s12237-015-0046-0 , hdl:10013/epic.46279

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Article

Seehaus, T. , Marinsek, S. , Helm, V.

, Skvarca, P. and Braun, M. (2015)
Changes in ice dynamics, elevation and mass discharge of Dinsmoor–Bombardier–Edgeworth glacier system, Antarctic Peninsula ,

Earth and Planetary Science Letters, 427 , 125 - 135 .

doi:https://doi.org/10.1016/j.epsl.2015.06.047 , hdl:10013/epic.46032

Article

Ricker, R.

, Hendricks, S.

, Perovich, D. K. , Helm, V.

and Gerdes, R. (2015)
Impact of snow accumulation on CryoSat-2 range retrievals over Arctic sea ice: An observational approach with buoy data ,

Geophysical Research Letters .

doi:https://doi.org/10.1002/2015GL064081 , hdl:10013/epic.45726

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Article

Price, D. , Beckers, J. M. , Ricker, R.

, Kurtz, N. , Rack, W. , Haas, C. , Helm, V.

, Hendricks, S.

, Leonard, G. and Langhorn, P. , Gateway Antarctica, University of Canterbury, Christchurch, New Zealand, Department of Earth & Atmospheric Sciences, University of Alberta, Edmonton, Alberta, Canada, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany, Cryospheric Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USA, Department of Earth, Space Science and Engineering, York University, Toronto, Ontario, Canada, School of Surveying, University of Otago, Dunedin, New Zealand, Department of Physics, University of Otago, Dunedin, New Zealand (2015)
Evaluation of CryoSat-2 derived sea-ice freeboard over fast ice in McMurdo Sound, Antarctica ,

Journal of Glaciology, 61 (226), pp. 285-300 .

doi:https://doi.org/10.3189/2015JoG14J157 , hdl:10013/epic.45308

Article

Ricker, R.

, Hendricks, S.

, Perovich, D. K. , Helm, V. and Gerdes, R. (2015)
Impact of snow accumulation on CryoSat-2 range retrievals over Arctic sea ice: An observational approach with buoy data ,

Geophysical Research Letters, 42 (11), pp. 4447-4455 .

doi:https://doi.org/10.1002/2015GL064081 , hdl:10013/epic.46821

Article

Humbert, A. , Steinhage, D.

, Helm, V.

, Hoerz, S. , Behrendt, J. , Leipprandt, E. , Christmann, J. , Plate, C. and Müller, R. (2015)
On the link between surface and basal structures of the Jelbart Ice Shelf, Antarctica ,

Journal of Glaciology, 61 (229), pp. 975-986 .

doi:https://doi.org/10.3189/2015JoG15J023 , hdl:10013/epic.46208

Article

Ricker, R.

, Hendricks, S.

, Helm, V.

, Skourup, H. and Davidson, M. (2014)
Sensitivity of CryoSat-2 Arctic sea-ice freeboard and thickness on radar-waveform interpretation ,

The Cryosphere, 8 (4), pp. 1607-1622 .

doi:https://doi.org/10.5194/tc-8-1607-2014 , hdl:10013/epic.44049

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Article

Helm, V.

, Humbert, A. and Miller, H. (2014)
Elevation and elevation change of Greenland and Antarctica derived from CryoSat-2 ,

The Cryosphere, 8 (4), pp. 1539-1559 .

doi:https://doi.org/10.5194/tc-8-1539-2014 , hdl:10013/epic.44098

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Article

HAWLEY, R. L. , BRANDT, O. , DUNSE, T. , HAGEN, J. O. , Helm, V.

, KOHLER, J. , LANGLEY, K. , MALNES, E. and HØGDA, K. A. (2013)
Using airborne Ku-band altimeter waveforms to investigate winter accumulation and glacier facies on Austfonna, Svalbard ,

Journal of Glaciology, 59 (217), pp. 893-899 .

doi:https://doi.org/10.3189/2013JoG13J051 , hdl:10013/epic.42037

Article

Helm, V.

, Drews, R. , Steinhage, D.

and Neckel, N.

(2011)
Validierung von CryoSat-2 Datenprodukten – Genauigkeit und Eindringverhalten ,

Rundtischgespräch: Georadar - Erfahrungen und Perspektiven, Freiberg . 6. + 7. Okt. 2011, Mitteilungen Sonderband I/2011 .

hdl:10013/epic.39265

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Article

Willat, R. , Laxon, S. , Giles, K. , Cullen, R. , Haas, C.

and Helm, V.

(2011)
Ku-band radar penetration into snow cover on Arctic sea ice using airborne data ,

Annals of Glaciology, 52 (57), pp. 197-205 .

hdl:10013/epic.37028

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Article

de la Peña, S. , Nienow, P. , Shepherd, A. , Helm, V.

, Mair, D. , Hanna, E. , Huybrechts, P. , Guo, Q. , Cullen, R. and Wingham, D. (2010)
Spatially extensive estimates of annual accumulation in the dry snow zone of the Greenland Ice Sheet determined from radar altimetry ,

The Cryosphere 4, pp. 467-474 .

doi:https://doi.org/10.5194/tc-4-467-2010 , hdl:10013/epic.36407

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Article

Hvidegaard, S. M. , Forsberg, R. , Helm, V.

, Hendricks, S.

, Skourup, H. , Stenseng, L. , Hanson, S. and Haas, C.

(2009)
CRYOVEX 2008 - Final Report ,

DTU Space, Technical Report 2/2009. .

hdl:10013/epic.35790

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Article

Helm, V.

, Steinhage, D.

, Dietrich, R. and Rülke, A. (2009)
CryoVEx08/09-Antarctica Data Acquisition and Final Processing Report ,

Alfred Wegener Institute, Bremerhaven, Germany. .

hdl:10013/epic.35779

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Article

Hawley, R. L. , Sheperd, A. , Cullen, R. , Helm, V.

and Wingham, D. J. (2009)
Ice-sheet elevations from across-track processing of airborne interferometric radar altimetry ,

Geophysical Research Letters., 36 (L22501) .

doi:https://doi.org/10.1029/2009GL040416 , hdl:10013/epic.33644

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:https://doi.org/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

Article

Helm, V.

and Steinhage, D.

(2008)
CryoVEx 2007 - Data Acquisition and Final Processing Report ,

Alfred Wegener Institute, Bremerhaven, Germany. .

hdl:10013/epic.35791

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Article

Stenseng, L. , Hvidegaard, S. M. , Skourup, H. , Forsberg, R. , Andersen, C. J. , Hanson, S. , Cullen, R. and Helm, V.

(2007)
Airborne Lidar and Radar Measurements In and Around Greenland CryoVEx 2006 ,

Danish National Space Center Technical Report 9 .

hdl:10013/epic.33645

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

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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Article

Jokat, W.

, Berger, D. , Bohlmann, H. , Helm, V.

, Hensch, M. , Jousselin, D. , Klein, C. , Lensch, N. , Liersch, P. , Martens, H. , Medow, A. , Micksch, U. , Rabenstein, L. , Rogenhagen, J. , Salat, C. , Schmidt-Aursch, M. C.

and Schwenk, A. (2004)
Marine Geophysics, The Expedition ARKTIS XIX/4 of the Research Vessel POLARSTERN in 2003, Reports of Legs 4a and 4b ,

Berichte zur Polar- und Meeresforschung, 475 , pp. 11-37 .

hdl:10013/epic.21300

Article

Jokat, W.

, Berger, D. , Helm, V.

, Kunsch, B. , Lensch, N. , Martens, H. , Rogenhagen, J. , Salat, C. , Schmidt-Aursch, M. C.

, Schubert, B. , Traub, B. and Wollny, K. (2003)
Geophysical investigations ,

Die Expedition ARKTIS XVIII/2 mit FS Polarstern, 2002, Berichte zur Polarforschung, 449 , pp. 8-32 .

hdl:10013/epic.19662

Inbook

Ricker, R.

, Hendricks, S.

, Helm, V.

and Gerdes, R. (2015)
Classification of CryoSat-2 Radar Echoes / Lohmann, G.

, Meggers, H. , Unnithan, V. , Wolf-Gladrow, D.

, Notholt, J. and Bracher, A.

(editors) ,

In: Towards an Interdisciplinary Approach in Earth System Science, (Springer Earth System Sciences), Heidelberg [u.a.], Springer International Publishing, 251 p., ISBN: 978-3-319-13864-0 .

doi:https://doi.org/10.1007/978-3-319-13865-7_17 , hdl:10013/epic.45046

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Thesis

Thesis -PhD

Helm, V.

(2008)
Airborne SAR / Interferometric Radar Altimeter System (ASIRAS) - Kalibrierung, Validierung und Interpretation der Messergebnisse ,

PhD thesis, Universittät Bremen.

hdl:10013/epic.33643

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Thesis -Diplom

Helm, V.

(2003)
Die Struktur des Kontinentalrandes im Gebiet des Larsenschelfes, Antarktische Halbinsel ,

Diplom thesis, Technische Universität Bergakademie Freiberg.

hdl:10013/epic.28534

Conference

Conference -Poster

Franke, S.

, Jansen, D.

, Beyer, S.

, Binder, T. , Neckel, N.

, Dörr, N.

, Paden, J. , Helm, V.

, Steinhage, D.

and Eisen, O.

(2020)
Ice flow and the conditions of the ice-bed interface at the onset of the Northeast Greenland Ice Stream ,

AGU Fall Meeting 2020 - Online Everywhere, Online, 1 December 2020 - 17 December 2020 .

hdl:10013/epic.e28176e6-d09b-4413-8e33-bb41e4011e10

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Conference -Talk

Franke, S.

, Westhoff, J. , Bons, P. D. , Weikusat, I.

, Binder, T. , Steinhage, D.

, Helm, V.

, Eisen, O.

and Jansen, D.

(2020)
Folded ice stratigraphy in North East Greenland: A three dimensional structural analysis ,

ESA - 2020 European Polar Science Week, Virtual Event, 26 October 2020 - 30 October 2020 .

hdl:10013/epic.79970606-2e4d-4b7a-b1ad-3a5c401b512c

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Conference -Talk

Koch, I. , Drews, R. , Jansen, D.

, Franke, S.

, Schannwell, C. , Visnjevic, V. , Streng, K. , Eisen, O.

, Helm, V.

and Pattyn, F. (2020)
Ice shelf internal reflection horizons reveal past dynamics and oceanic melt ,

FRISP 2020 - 34th Forum for Research into Ice Shelf Processes, Online, 16 June 2020 - 25 June 2020 .

hdl:10013/epic.83c07012-a04c-41e9-999b-82da018d2d4e

Conference -Talk

Jansen, D.

, Franke, S.

, Binder, T. , Bons, P. D. , Dahl-Jensen, D. , Eisen, O.

, Helm, V.

, Miller, H. , Neckel, N.

, Paden, J. , Steinhage, D.

and Weikusat, I.

(2020)
3D-Structure ofNEGIS shearmarginsfromradarstratigraphy ,

EGU General Assembly 2020 | Sharing Geoscience Online, 4 May 2020 - 8 May 2020 .

doi:https://doi.org/10.5194/egusphere-egu2020-20424 , hdl:10013/epic.9dcf69cd-603d-45c2-a334-209ba405b392

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Conference -Poster

Jansen, D.

, Steinhage, D.

, Miller, H. , Helm, V.

, Franke, S.

, Eisen, O.

, Dahl-Jensen, D. , Jie, Y. , O'Neill, C. and Gogineni, P. (2020)
Deformation structures at the margins of ice streams ,

80. Jahrestagung der Deutschen Geophysikalischen Gesellschaft, München, Germany, 23 March 2020 - March 2020 .

hdl:10013/epic.7dcb8abc-41bd-483a-8fe3-2aacb17af03e

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Conference -Poster

Jansen, D.

, Steinhage, D.

, Miller, H. , Helm, V.

, Franke, S.

, Dahl-Jensen, D. , Jie, Y. , O'Neill, C. and Gogineni, P. (2020)
An ice stream margin as seen with high resolution radar ,

IASC Workshop on the Dynamics; Mass Budget of Arctic Glaciers & the ASC Network on Arctic Glaciology Annual Meeting, 28 January 2020 - 30 January 2020 .

hdl:10013/epic.8b7f5ced-1ea3-4bc6-9108-aaa09d717107

Preview

Conference -Talk

Franke, S.

, Jansen, D.

, Binder, T. , Dörr, N. , Helm, V.

, Paden, J. , Steinhage, D.

and Eisen, O.

(2019)
Bedrock Topography and Subglacial Landforms of the North East Greenland Ice Stream ,

EastGRIP Steering Committee Meeting, Copenhagen, Denmark., Copenhagen, Denmark, November 2019 - unspecified .

hdl:10013/epic.7abf3e41-342e-4b9d-9453-2c8b59235881

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Conference -Talk

Eisen, O.

, Binder, T. , Drews, R. , Dörr, N. , Franke, S.

, Helm, V.

, Humbert, A. , Jansen, D.

, Paden, J. , Steinhage, D.

, Yan, S. and Miller, H. (2019)
AWI’s airborne Ultra-Wideband Radar for sounding and imaging of ice sheets and shelves ,

IGS Symposium Five Decades of Radioglaciology, Stanford, California, USA, 8 July 2019 - 12 July 2019 .

hdl:10013/epic.74d32b03-de27-4eb4-a069-9c1f4a75bb54

Conference -Keynote

MacGregor, J. , Fahnestock, M. , Binder, T. , Eisen, O.

, Helm, V.

, Kjaer, K. , Larsen, N. , Morlighem, M. and Paden, J. (2019)
The ultrawideband airborne radar survey of Hiawatha Glacier and its implications for future investigations of ice-sheet margins ,

IGS Symposium Five Decades of Radioglaciology, Stanford, California, USA, 8 July 2019 - 12 July 2019 .

hdl:10013/epic.e22b3fc3-23c9-415b-9ba9-0810ce2cd696

Conference -Poster

Franke, S.

, Jansen, D.

, Binder, T. , Dörr, N. , John, P. , Helm, V.

, Steinhage, D.

and Eisen, O.

(2019)
Ice Thickness and Bed Conditions of the North East Greenland Ice Stream ,

IGS 2019 Five Decades of Radioglaciology, Stanford, California, USA, July 2019 - unspecified .

hdl:10013/epic.fafc8490-bd3d-4204-8e74-aae22519ceb4

Preview

Conference -Talk

Jansen, D.

, Franke, S.

, Neckel, N.

, Binder, T. , Bons, P. D. , Eisen, O.

, Helm, V.

, Miller, H. and Paden, J. (2019)
Signature of NEGIS shear margins in radar stratigraphy ,

IGS Symposium Five Decades of Radioglaciology, Stanford, USA, 8 July 2019 - 12 July 2019 .

hdl:10013/epic.d35f8a2d-62af-4329-a04d-416e9cc2d228

Conference -Talk

Nitze, I.

, Grosse, G.

, Boike, J.

, Langer, M.

, Lantuit, H.

, Lange, S.

, Grünberg, I.

, Helm, V.

, Sachs, T. , Hartmann, J. , Kumar, A. , Brauchle, J. , Bucher, T. , Gessner, M. and Kohnert, K. (2019)
Airborne LiDAR and stereo-photogrammetric characterization of permafrost landscapes and thaw subsidence ,

4th Helmholtz Data Science Symposium, Helmholtz Zentrum Geesthacht, Germany, 20 June 2019 - 21 June 2019 .

hdl:10013/epic.d4a469c3-f249-4018-aa67-eb485759bb3f

Preview

Conference -Poster

Matsuoka, K. , Van Liefferinge, B. , Binder, T. , Eisen, O.

, Helm, V.

, Karlsson, N. , Pattyn, F. and Steinhage, D.

(2019)
Bed diagnosis in the Dome Fuji region, East Antarctica, using airborneradar data and englacial attenuation estimates ,

EGU General Assembly, Vienna, 7 April 2019 - 12 April 2019 .

hdl:10013/epic.d440bb01-0132-4e98-9a0e-24b0446da2ed

Preview

Conference -Poster

Berger, S.

, Neckel, N.

, Helm, V.

, Dörr, N. , Drews, R. , Pattyn, F. and Eisen, O.

(2019)
Detecting and monitoring ice-shelf basal mass balance in Dronning Maud Land, East Antarctica ,

EGU General Assembly, Vienna, 7 April 2019 - 12 April 2019 .

hdl:10013/epic.145178fb-0220-4f24-a161-edd946290906

Preview

Conference -Talk

Sobiech-Wolf, J. , Ullmann, T. , Kunz, J. , Kneisel, C. , Steinhage, D.

, Helm, V. , Hartmann, J. , Baumhauer, R. and Dierking, W.

(2019)
Detektion der Auftauschicht in Permafrostgebieten mittels flugzeuggestütztem GPR ,

79. Jahrestagung DGG, Braunschweig, 4 March 2019 - 7 March 2019 .

hdl:10013/epic.4e49867a-7a43-4419-8ea4-fb258da0e02c

Conference -Talk

Grosse, G.

, Boike, J.

, Lantuit, H.

, Günther, F.

, Heim, B.

, Langer, M.

, Nitze, I.

, Antonova, S.

, Helm, V.

and Sachs, T. (2019)
Airborne Remote Sensing of Permafrost Landscape Dynamics ,

AWI Kolloqium, Bremerhaven, 13 February 2019 - 13 February 2019 .

hdl:10013/epic.881abe87-1da1-4fbf-ba02-8c230a429b18

Preview

Conference -Community Service

Pfeiffenberger, H.

, Frickenhaus, S.

, Nerger, L.

, Piepenburg, D.

, Niehoff, B. , Lange, S.

, Behrendt, A.

, Pfalz, G.

, Koppe, R.

, Fischer, P.

, Mieruch-Schnülle, S.

, Wittig, R. , Leefmann, T. , Hendricks, S.

, Helm, V.

, Hoppema, M.

, Buttigieg, P. L.

, Klockmann, M. , Emeis, K. C. , Rath, W. and Wölfl, A. C. (2018)
Second Data Science Symposium at AWI ,

Second Data Science Symposium, Bremerhaven, Auditorium Nordseemuseum, 6 December 2018 - 6 December 2018 .

hdl:10013/epic.f2362c6e-2c6c-4962-a1f6-dd7a9d6f2eb0

Preview

Conference -Talk

Franke, S.

, Jansen, D.

, Binder, T. , Helm, V.

, Steinhage, D.

, Paden, J. , Weikusat, I.

and Eisen, O.

(2018)
First results of the AWI-Polar 6 airborne radio echo sounding survey around EGRIP drill site ,

Eastgrip Steering Committee Meeting 2018, Copenhagen, Denmark, 12 November 2018 - 16 November 2018 .

hdl:10013/epic.75158506-3dfc-446c-a15f-4a1cabb57d60

Preview

Conference -Poster

Antonova, S. , Höfle, B. , Thiel, C. , Marx, S. , Anders, K. , Helm, V.

and Boike, J.

(2018)
Estimation of forest properties in a treeline zone using TanDEM-X and airborne laser scanning data ,

5th European Conference on Permafrost (EUCOP 2018), Chamonix, France, 23 June 2018 - 1 July 2018 .

hdl:10013/epic.abf71925-2556-47b4-bf56-cf74a08a0fb2

Conference -Talk

Berger, S.

, Drews, R. , Helm, V.

, Neckel, N.

, Sun, S. , Pattyn, F. and Eisen, O.

(2018)
Detecting high spatial variability of ice-shelf basal mass balance ,

EGU General Assembly, Vienna, 8 April 2018 - 13 April 2018 .

hdl:10013/epic.8d47965b-495c-4400-8c71-4ef6174c040d

Preview

Conference -Talk

Karlsson, N. B. , Binder, T. , Eagles, G.

, Helm, V.

, Pattyn, F. , Van Liefferinge, B. and Eisen, O.

(2018)
Glaciological characteristics in the Dome Fuji region and new assessment for 1.5 Ma old ice ,

EGU General Assembly, Vienna, 8 April 2018 - 13 April 2018 .

hdl:10013/epic.3a9106cd-a83e-435f-9b6a-c2a894f53a38

Preview

Conference -Invited talk

Eisen, O.

, Binder, T. , Helm, V.

, Humbert, A. , Jansen, D.

, Steinhage, D.

and Miller, H. (2017)
Peering into ice sheets: the use of AWI’s new radar magnifying glass ,

Kolloquium DLR Institut für Hochfrequenztechnik und Radarsysteme .

hdl:10013/epic.2a4ce64f-4f0f-4792-aa4e-983bc3f5697c

Conference -Poster

Antonova, S. , Anders, K. , Helm, V.

, Höfle, B. , Marx, S. and Boike, J.

(2017)
Bistatic coherence from CoSSC TanDEM-X data for tree height estimation in the Canadian Subarctic ,

5th HGF Alliance “Remote Sensing and Earth System Dynamics” Week, 26 June 2017 - 30 June 2017 .

hdl:10013/epic.51387

Preview

Conference -Talk

Drews, R. , Mayer, C. , Eisen, O.

, Helm, V.

, Ehlers, T. , Pattyn, F. , Berger, S.

, Favier, L. , Hewitt, I. H. , Ng, F. , Fürst, J. , Gillet-Chaulet, F. , Bergeot, N. and Matsuoka, K. (2017)
Fun at Antarctic grounding lines: Ice-shelf channels and sediment transport ,

EGU General Assembly, Vienna, 23 April 2017 - 28 April 2017 .

hdl:10013/epic.7f3243c8-40b5-4436-81e4-48df805f2ba5

Preview

Conference -Poster

Radosavljevic, B.

, Lantuit, H.

, Pollard, W. , Overduin, P.

, Couture, N. J. , Sachs, T. , Helm, V.

and Fritz, M.

(2016)
Threats to Coastal Infrastructure from Erosion and Flooding: A Case Study from Herschel Island, Yukon Territory, Canada ,

11th International Conference on Permafrost, Potsdam, Germany, 20 June 2016 - 24 June 2016 .

hdl:10013/epic.48146

Preview

Conference -Talk

Wouters, B. , Bamber, J. , Ligtenberg, S. , Kuipers-Munneke, P. , van den Broeke, M. , Helm, V.

and Hurkmans, R. T. W. L. (2016)
A 15 year continuous time series of mass trends for the Greenland ice sheet from satellite altimetry ,

ESA Living Planet Symposium, Prague, Czech Republic, 9 May 2016 - 13 May 2016 .

hdl:10013/epic.48370

Conference -Talk

Sandberg Sørensen, L. , Baker, S. , Csatho, B. , Forsberg, R. , Gourmelen, N. , Helm, V.

, Langley, K. , Martinez, B. , Nienow, P. , Schrama, E. , Shepherd, A. , Davidson, M. and Simonsen, S. B. (2016)
CryoSat Land Ice Product Validation within the CryoVal-LI project ,

ESA Living Planet Symposium, Prague, Czech Republic, 9 May 2016 - 13 May 2016 .

hdl:10013/epic.48364

Conference -Talk

Knöfel, C. , Scheinert, M. , Schröder, L. , Strößenreuther, U. , Helm, V.

and Horwath, M. (2016)
CryoSat-2 calibration/validation in Antarctica: Quantifying uncertainties utilising different satellite, airborne and ground-based techniques ,

ESA Living Planet Symposium, Prague, Czech Republic, 9 May 2016 - 13 May 2016 .

hdl:10013/epic.48363

Conference -Poster

Seehaus, T. , Marinsek, S. , Helm, V.

, Steinhage, D.

, Skvarca, P. , Seco, J. and Braun, M. (2016)
Observation of Changes in Ice Dynamics at the northern Antarctic Peninsula ,

ESA Living Planet Symposium, Prague, Czech Republic, 9 May 2016 - 13 May 2016 .

hdl:10013/epic.48367

Conference -Poster

Helm, V.

and Humbert, A. (2016)
Recent ice-volume and mass change of Greenland and Antarctica by CryoSat-2 altimetry ,

ESA Living Planet Symposium, Prague, Czech Republic, 9 May 2016 - 13 May 2016 .

hdl:10013/epic.48368

Conference -Poster

Konrad, H. , Hogg, A. , Morris, L. , Smith, A. , Helm, V.

, Steinhage, D.

, Mulvany, R. , Gurney, R. J. and Shepherd, A. (2016)
Stratigraphy and surface accumulation variations on Pine Island Glacier, West Antarctica, from airborne, ground-based and satellite observations ,

ESA Living Planet Symposium, Prague, Czech Republic, 9 May 2016 - 13 May 2016 .

hdl:10013/epic.48366

Conference -Poster

Hogg, A. , Shepherd, A. , Nagler, T. , Gilbert, L. , Wuite, J. , Muir, A. , Corr, H. , Steinhage, D.

, Helm, V.

, Rott, H. and Drinkwater, M. (2016)
Utility of CryoSat-2 data for locating the ice sheet grounding line and determining ice shelf thickness: Final outcomes of the ESA STSE GLITter project ,

ESA Living Planet Symposium, Prague, Czech Republic, 9 May 2016 - 13 May 2016 .

hdl:10013/epic.48369

Conference -Talk

Schröder, L. , Helm, V.

, Richter, A. , Fedorov, D. , Eberlein, L. , Brovkov, E. , Knöfel, C. , Horwath, M. and Lukin, V. (2016)
Validation of CryoSat-2 products over the East Antarctica Ice Sheet ,

ESA Living Planet Symposium, Prague, Czech Republic, 9 May 2016 - 13 May 2016 .

hdl:10013/epic.48365

Conference -Poster

Jansen, D.

, Helm, V.

, Neckel, N.

, Luckman, A. J. and Bevan, S. (2016)
Observed rift propagation in the Larsen C Ice Shelf from Sentinel 1-A radar data ,

EGU General Assembly 2016, Vienna, Austria, 17 April 2016 - 22 April 2016 .

hdl:10013/epic.47801

Preview

Conference -Poster

Ricker, R.

, Hendricks, S.

, Kaleschke, L. , Schwegmann, S. , Rinne, E. and Helm, V.

(2016)
Arctic and Antarctic Sea-Ice Thickness Derived from CryoSat-2, SMOS, and Envisat ,

EGU 2016, Vienna, 18 April 2016 - 22 April 2016 .

hdl:10013/epic.47758

Preview

Conference -Poster

Shfaqat, A. K. , Sasgen, I.

, Bevis, M. , van Dam, T. , Wahr, J. , Bamber, J. , Wouters, B. , Helm, V.

, Willis, M. , Csatho, B. , Knudsen, P. , Kuipers-Munneke, P. and Kjaer, K. (2016)
Iceland hotspot track in southeast Greenland causes huge present-day vertical viscoelastic motion of the bedrock ,

EGU General Assembly 2016, Vienna, Austria, 17 April 2016 - 22 April 2016 .

hdl:10013/epic.48372

Conference -Talk

Berger, S. , Drews, R. , Helm, V.

, Rack, W. , Lenaerts, J. , Ligtenberg, S. and Pattyn, F. (2016)
Observing ice-shelf channels and basal melting from space ,

EGU General Assembly 2016, Vienna, Austria, 17 April 2016 - 22 April 2016 .

hdl:10013/epic.48371

Conference -Invited talk

Ricker, R.

, Hendricks, S.

, Kaleschke, L.

and Helm, V.

(2016)
Sea Ice Thickness obtained from Space ,

Ifremer colloquium, Ifremer, Brest, France .

hdl:10013/epic.7d787f23-8859-438f-9580-ee7f32cc9c4f

Preview

Conference -Poster

Neckel, N.

, Helm, V.

, Humbert, A. , Rosenau, R. and Ebermann, B. (2016)
Near real time surface velocity measurements of North-East Greenland Ice Stream outlet glaciers from Sentinel-1A data ,

ESA Living Planet Symposium, Prague, Czech Republic, 9 May 2016 - 13 May 2016 .

hdl:10013/epic.47918

Preview

Conference -Poster

Binder, T. , Eisen, O.

, Helm, V.

, Humbert, A. and Steinhage, D.

(2016)
Phase-sensitive radar on thick Antarctic ice – how well does it work? ,

EGU General Assembly 2016, Vienna, 17 April 2016 - 22 April 2016 .

hdl:10013/epic.47755

Preview

Conference -Invited talk

Radosavljevic, B.

, Lantuit, H.

, Pollard, W. , Overduin, P.

, Couture, N. J. , Sachs, T. , Helm, V.

and Fritz, M.

(2015)
Coastal Hazard Vulnerability Assessment: A Case Study of Erosion and Flooding on Herschel Island, Yukon Territory, Canada ,

AGU Fall Meeting, San Francisco, California, USA, 14 December 2015 - 18 December 2015 .

hdl:10013/epic.46682

Preview

Conference -Invited talk

Ricker, R.

, Hendricks, S.

, Perovich, D. K. and Helm, V.

(2015)
The impact of the snow cover on sea-ice thickness products, retrieved by Ku band radar altimeters ,

AGU Fall Meeting, San Francisco, December 2015 - December 2015 .

hdl:10013/epic.62893cf9-1e04-4d46-ab04-fb87c40e0d3c

Preview

Conference -Invited talk

Helm, V.

(2015)
Observing ice-volume change in Greenland and Antarctica using CryoSat-2 altimetry ,

IUGG, Prague, 22 June 2015 - 2 July 2015 .

hdl:10013/epic.48359

Conference -Poster

Humbert, A. , Helm, V.

, Kleiner, T.

and Steinhage, D.

(2015)
How swampy is the base of Recovery Glacier, Antarctica? ,

International Symposium on Hydrology of Glaciers and Ice Sheets, Iceland, 21 June 2015 - 26 June 2015 .

hdl:10013/epic.49352

Conference -Talk

Helm, V.

, Eagles, G.

, Müller, C. , Binder, T. , Kässbohrer, J. , Drews, R. , Lenaerts, J. , Steinhage, D.

and Eisen, O.

(2015)
Circular surface depression on Roi Baudoin Ice Shelf, Dronning Maud Land, East Antarctica - characteristics and possible origin ,

European Geophysical Union, 12 April 2015 - 15 April 2015 .

hdl:10013/epic.45044

Conference -Talk

Simonsen, S. B. , Sørensen, L. S. , Nilsson, J. , Helm, V.

, Langley, K. , Forsberg, R. , Hvidegaard, S. M. and Skourup, H. (2015)
Validating Cryosat-2 elevation estimates with airborne laser scanner data for the Greenland ice sheet, Austfonna and Devon ice caps ,

EGU General Assembly 2015, Vienna, Austria, 12 April 2015 - 17 April 2015 .

hdl:10013/epic.45313

Conference -Talk

Helm, V.

(2015)
CryoSat-2 QWG 6, Land Ice Validation ,

CryoSat-2 QWG 6, Mullard Space Science Laboratory, Dorking, UK, 16 March 2015 - 19 March 2015 .

hdl:10013/epic.45314

Conference -Poster

Steinhage, D.

, Helm, V.

, Kasper, D. , Kleiner, T.

and Humbert, A. (2014)
New Insights in the Existence of Lakes Beneath the Recovery Glacier Drainage Basin, Antarctica ,

AGU Fall Meeting, San Francisco, 15 December 2014 - 19 December 2014 .

hdl:10013/epic.49292

Conference -Talk

Hendricks, S.

, Ricker, R.

, Helm, V.

, Haas, C. and Davidson, M. (2014)
Uncertainties of Sea Ice Thickness from CryoSat-2 ,

International Sea Ice Concentration and Thickness Evaluation and Intercomparison Workshop, University of Hamburg, 19 September 2014 - unspecified .

hdl:10013/epic.45047

Preview

Conference -Poster

Obu, J. , Lantuit, H.

, Fritz, M.

, Grosse, G.

, Sachs, T. and Helm, V.

(2014)
Short-term geomorphic dynamics of the Yukon and Herschel Island coasts based on LIDAR DEMs from 2012 and 2013 ,

EUCOP4 European Conference on Permafrost, Evora, Portugal, 19 June 2014 - 21 June 2014 .

hdl:10013/epic.43741

Preview

Conference -Talk

Obu, J. , Lantuit, H.

, Fritz, M.

, Heim, B.

, Myers-Smith, I. , Sachs, T. and Helm, V.

(2014)
Soil organic carbon and total nitrogen on the Herschel Island ,

CAPP workshop, Stockholm University, 12 May 2014 - 14 May 2014 .

hdl:10013/epic.44435

Preview

Conference -Talk

Goeller, S. , Thoma, M.

, Grosfeld, K.

, Helm, V.

and Miller, H. (2014)
Dynamics and mass export of the Ross Ice Streams in West Antarctica, triggered by subglacial hydrological processes ,

REKLIM Workshop, Bad Salzschlirf, Germany, 31 March 2014 - 2 April 2014 .

hdl:10013/epic.43383

Preview

Conference -Talk

Obu, J. , Lantuit, H.

, Fritz, M.

, Heim, B.

, Schirrmeister, L.

, Helm, V.

and Wolter, J.

(2014)
Organic carbon and nitrogen release by coastal erosion in the western Canadian Arctic ,

ESA DUE Permafrost Workshop, ESA ESRIN, Frascati (Rome), Italy, 11 February 2014 - 13 February 2014 .

Preview

Conference -Poster

Helm, V.

, Langhammer, L. and Steinhage, D.

(2013)
Ku-Band penetration obtained from airborne radar and laser altimetry and TerraSAR-X in a blue ice area in Antarctica ,

Earth Observation and Cryosphere Science Conference, 13 November 2012 - 16 November 2012 .

hdl:10013/epic.39703

Conference -Talk

Hendricks, S.

, Ricker, R.

, Helm, V.

, Haas, C. , Skourup, H. , Herber, A. , Schwegmann, S. , Gerdes, R. and Davidson, M. (2013)
CryoSat-2 Sea-Ice Freeboard and Thickness ,

ESA Living Planet Symposium, Edinburgh, 9 September 2013 - 13 September 2013 .

hdl:10013/epic.42309

Preview

Conference -Talk

Hendricks, S.

, Ricker, R.

, Helm, V.

, Schwegmann, S. , Haas, C. and Herber, A. (2013)
Mass balance of sea ice in both hemispheres ,

CryoSat Third User Workshop, Dresden, 12 March 2013 - 14 March 2013 .

hdl:10013/epic.42310

Preview

Conference -Talk

Ricker, R.

, Hendricks, S.

, Helm, V.

, Gerdes, R. and Skourup, H. (2012)
Comparison Of Sea-Ice Freeboard And Thickness Distributions From Aircraft Data And Cryosat-2 ,

Earth Observation & Cryospehere Science Conference, ESRIN, Frascati, Italy, 13 November 2012 - 16 November 2012 .

hdl:10013/epic.40969

Preview

Conference -Talk

Langley, K. , Patel, A. , Hawley, R. , Dunse, T. , Hagen, J. , Kohler, J. , Skourup, H. , Gogineni, S. , Forsström, S. , Eiken, T. , Leuschen, C. and Helm, V.

(2012)
CryoSat cal/val activities on Austfonna – Part II: Ground-based measurements using a Ku-band radar, for validation of the CryoSat-2 SIRAL data ,

Earth Observation and Cryosphere Science Conference, 13 November 2012 - 16 November 2012 .

hdl:10013/epic.39705

Conference -Talk

Wang, C. , Renner, A. , Gerland, S. , Anfinsen, S. , Brandt, O. , Doulgeris, A. , Dumont, M. , Eltoft, T. , Fors, A. , Granskog, M. , Haapala, J. , Helm, V.

, Hendricks, S.

, Hudson, S. , Hughes, N. , Lensu, M. , Li, Z. , Moen, M. , Sandven, S. , Skourup, H. , Spreen, G. and Zygmuntowska, M. (2012)
In-situ calibration and validation of CryoSat-2 observations over Arctic first year sea ice north of Svalbard ,

Earth Observation and Cryosphere Science Conference, 13 November 2012 - 16 November 2012 .

hdl:10013/epic.39704

Conference -Poster

Ricker, R.

, Hendricks, S.

, Helm, V.

, Gerdes, R. and Skourup, H. (2012)
A Comparison of Sea-Ice Freeboard Distributions from Aircraft Data and CryoSat-2 ,

20 Years of Progress in Radar Altimetry, Venice, Italy, 24 September 2012 - 29 September 2012 .

hdl:10013/epic.40122

Preview

Conference -Poster

Helm, V.

, Drews, R. , Neckel, N.

, Knöfel, C. and Steinhage, D.

(2012)
CryoSat Cal/Val – Accuracy and Penetration Depth of the CryoSat SARIn product ,

20 Years of Progress in Radar Altimetry, Venice, 24 September 2012 - 29 September 2012 .

hdl:10013/epic.39707

Conference -Conference paper

Helm, V.

, Steinhage, D.

and Miller, H. (2012)
CRYOSAT Cal/Val activities using the airborne ASIRAS Ku-band system ,

IGARSS 2012, München, 22 July 2012 - 27 July 2012 .

hdl:10013/epic.39706

Conference -Invited talk

Helm, V.

and Hendricks, S.

(2012)
Eine eisige Mission - Mit CryoSat-2 den Änderungen in den Polargebieten auf der Spur ,

Die Erde im Visier - Sonderausstellung, GEOMAR, Kiel, 15 May 2012 - 24 August 2012 .

hdl:10013/epic.39702

Conference -Talk

Helm, V.

(2012)
CryoVEx 2011 - Final Meeting ,

CryoVEx 2011 - Final Meeting, ESA - ESRIN, Frascati, Italy .

hdl:10013/epic.38736

Preview

Conference -Talk

Hendricks, S.

, Helm, V.

, Herber, A. and Haas, C.

(2012)
CryoVEx 2011, Airborne Validation Campaign ,

CryoVEx 2011 Final Meeting .

hdl:10013/epic.38684

Preview

Conference -Talk

Helm, V.

and Steinhage, D.

(2012)
CryoVExANT-2011 - Data Acquisition Report ,

CryoVEx 2011 - Final Meeting, ESA - ESRIN, Frascati, Italy .

hdl:10013/epic.38737

Preview

Conference -Talk

Helm, V.

, Drews, R. , Neckel, N.

and Diez, A. (2011)
Validierung von CryoSat-2 -- Genauigkeit und Eindringverhalten ,

9. RTG Georadar, Freiberg, Germany .

hdl:10013/epic.38735

Preview

Conference -Talk

Helm, V.

and Hendricks, S.

(2011)
Accuracy of surface elevation derived from ASIRAS and CryoSat ,

2nd CryoSat Validation workshop. .

hdl:10013/epic.36855

Preview

Conference -Invited talk

Krumpen, T.

, Helm, V.

, Hendricks, S.

, Steinhage, D.

, Nicolaus, M.

and Dierking, W.

(2011)
Calibration and Validation of CryoSat-2 and TanDEM-X elevation products of land and sea ice by using airborne and field data ,

TanDEM-X Science MeetingFeb. 2011. .

hdl:10013/epic.37105

Conference -Poster

Hendricks, S.

, Helm, V.

, Stenseng, L. and Haas, C.

(2011)
Ku-Band radar penetration into Snow over Arctic sea ice ,

2nd CryoSat Validation Workshop. .

hdl:10013/epic.36883

Preview

Conference -Talk

Hendricks, S.

, Haas, C.

, Stenseng, L. and Helm, V.

(2011)
Validation of CryoSat-2 sea ice freeboard retrievals by ground and airborne surveys ,

IUGG XXV General Assembly, Melbourne. .

hdl:10013/epic.38285

Preview

Conference -Invited talk

Helm, V.

(2010)
CryoSat-2, ESA's Mission to Ice ,

Koordinations-Workshop SPP 1257, Dipperz, Germany. .

hdl:10013/epic.35778

Preview

Conference -Conference paper

Hendricks, S.

, Stenseng, L. , Helm, V.

and Haas, C.

(2010)
Effects of Surface Roughness on Sea Ice Freeboard Retrieval with an Airborne Ku-Band SAR Radar Altimeter ,

Geoscience and Remote Sensing (IGARSS 2010), IEEE International Symposium. .

hdl:10013/epic.38266

Conference -Conference paper

Sandberg Sørensen, L. , Stenseng, L. , Simonsen, S. B. , Forsberg, R. , Poulsen, S. K. and Helm, V.

(2010)
Greenland Ice Sheet changes from space using laser, radar and gravity. ,

ESA Living Planet 2010, ESA Special Publication SP-686. .

hdl:10013/epic.38270

Preview

Conference -Talk

Helm, V.

, Hendricks, S.

, Steinhage, D.

and Rülke, A. (2009)
Accuracy of surface elevation derived from ASIRAS ,

Joint CryoSat-IceSat Science Team meeting, Reykjavik, Iceland. .

hdl:10013/epic.33472

Preview

Conference -Talk

Helm, V.

(2009)
Akkumulationsbestimmung mit Hilfe eines flugzeuggetragenen KU-Band-Radaraltimetersystems ,

Rundtisch-Gespräch Georadar (RTG-8), Freiberg, Germany. .

hdl:10013/epic.33448

Preview

Conference -Talk

Helm, V.

, Hendricks, S.

, Steinhage, D.

and Rülke, A. (2009)
CryoSat-2 Cal/Val Aktivitäten über Landeis ,

CryoSat Nutzerworkshop, AWI Bremerhaven, Germany. .

hdl:10013/epic.35774

Preview

Conference -Talk

Helm, V.

(2009)
CryoSat-2, ESA's Mission to Ice ,

Koordinations-Workshop SPP 1158, Hamburg, Germany. .

hdl:10013/epic.33473

Preview

Conference -Talk

Helm, V.

(2009)
CryoVEx 2008 - Analysis of ASIRAS Level_1b product ,

CryoVEx 2008 Final Meeting, ESA - ESTEC, Noordweijk, The Netherlands. .

hdl:10013/epic.33474

Preview

Conference -Talk

Helm, V.

(2009)
CryoVEx08/09 Antarctica - Final presentation ,

CryoVEx08/09 Antarctica Final meeting, ESA - ESTEC Noordweijk, The Netherlands. .

hdl:10013/epic.33906

Preview

Conference -Talk

Hendricks, S.

, Haas, C.

, Helm, V.

, Stenseng, L. and Tonboe, R. (2009)
Freeboard and HEM sea ice thickness measurements in 2005, 2006 and 2008 ,

Joint CryoSat-IceSat Science Team Meeting, Reykjavik, Iceland. .

hdl:10013/epic.33188

Preview

Conference -Talk

Hendricks, S.

, Haas, C.

and Helm, V.

(2008)
CryoVEx 2008: Airborne sea ice thickness campaign ,

CryoVEx 2008 Mid Term Review, Copenhagen. .

hdl:10013/epic.33462

Conference -Poster

Wesche, C.

, Eisen, O.

, Helm, V.

, Riedel, S. , Rülke, A. and Steinhage, D.

(2007)
Surface topography in the center of Dronning Maud Land, Antarctica, derived from airborne radar altimetry and ground based kinematic GPS measurements ,

General Assembly of the European Geosciences Union, Vienna, Austria, 15 April 2007 - 20 April 2007 .

hdl:10013/epic.42129

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

Preview

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 -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

Helm, V.

and Jokat, W.

(2003)
The sedimentary structure of the continental slope in the area of Larsen shelf, Eastern margin of Antarctica ,

63. Jahrestagung der Deutschen Geophysikalischen Gesellschaft, 23.-28. März, Jena. .

hdl:10013/epic.26984

Miscellaneous

Hendricks, S.

, Ricker, R.

and Helm, V.

(2016)
User Guide - AWI CryoSat-2 Sea Ice Thickness Data Product (v1.2)

[Miscellaneous]

hdl:10013/epic.48201

Preview

Miscellaneous

Hendricks, S.

, Steinhage, D.

, Helm, V.

, Birnbaum, G.

, Skou, N. , Kristensen, S. S. , Søbjærg, S. S. , Gerland, S. , Spreen, G. , Bratrein, M. and King, J. (2014)
SMOSice 2014: Data Acquisition Report ,

[Miscellaneous]

hdl:10013/epic.45054

Preview

PANGAEA Documentation

Rankl, M. , Braun, M. and Helm, V.

(2015)
TanDEM-X ice thickness dataset for Wilkins Ice Shelf, Antarctic Peninsula ,

Bremerhaven, PANGAEA .

hdl:10013/epic.44969

Preview

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