Items where Author is "Westhoff, Julien"

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Number of items: 31.

Article

Article
Westhoff, J. , Freitag, J. , Orsi, A. , Martinerie, P. , Weikusat, I. , Dyonisius, M. , Faïn, X. , Fourteau, K. and Blunier, T. (2024)
Combining traditional and novel techniques to increase our understanding of the lock-in depth of atmospheric gases in polar ice cores – results from the EastGRIP region ,
The Cryosphere, 18 (9), pp. 4379-4397 .
doi:10.5194/tc-18-4379-2024 , hdl:10013/epic.9053681e-fd9b-47f5-ac03-e0c6334d8408
[thumbnail of tc-18-4379-2024.pdf]
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Article
Stoll, N. , Westhoff, J. , Bohleber, P. , Svensson, A. , Dahl-Jensen, D. , Barbante, C. and Weikusat, I. (2023)
Chemical and visual characterisation of EGRIP glacial ice and cloudy bands within ,
The Cryosphere, 17 (5), pp. 2021-2043 .
doi:10.5194/tc-17-2021-2023 , hdl:10013/epic.fdace06d-7ef2-4c05-96b1-8e964cab95e7
[thumbnail of tc-17-2021-2023.pdf]
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Article
Franke, S. ORCID: https://orcid.org/0000-0001-8462-4379, Bons, P. D. , Westhoff, J. , Weikusat, I. , Binder, T. , Streng, K. , Steinhage, D. , Helm, V. ORCID: https://orcid.org/0000-0001-7788-9328, Eisen, O. ORCID: https://orcid.org/0000-0002-6380-962X, Paden, J. D. , Eagles, G. and Jansen, D. (2022)
Holocene ice-stream shutdown and drainage basin reconfiguration in northeast Greenland ,
Nature Geoscience, 15 (12), pp. 995-1001 .
doi:10.1038/s41561-022-01082-2 , hdl:10013/epic.7e919cb9-207f-4973-8fdf-64642f62daef
[thumbnail of s41561-022-01082-2-1.pdf]
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Article
Westhoff, J. , Sinnl, G. , Svensson, A. , Freitag, J. ORCID: https://orcid.org/0000-0003-2654-9440, Kjær, H. A. , Vallelonga, P. , Vinther, B. M. , Kipfstuhl, S. ORCID: https://orcid.org/0000-0003-1495-5273, Dahl-Jensen, D. and Weikusat, I. ORCID: https://orcid.org/0000-0002-3023-6036 (2022)
Melt in the Greenland EastGRIP ice core reveals Holocene warm events ,
Climate of the Past, 18 , pp. 1011-1034 .
doi:10.5194/cp-18-1011-2022 , hdl:10013/epic.20a42087-f123-425d-9641-3c717d6adaf8
[thumbnail of westhoff2022cp.pdf]
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Article
Bons, P. D. , de Riese, T. , Franke, S. ORCID: https://orcid.org/0000-0001-8462-4379, Llorens, M. G. , Sachau, T. , Stoll, N. ORCID: https://orcid.org/0000-0002-3219-8395, Weikusat, I. ORCID: https://orcid.org/0000-0002-3023-6036, Westhoff, J. and Zhang, Y. (2021)
Comment on “Exceptionally high heat flux needed to sustain the Northeast Greenland Ice Stream” by Smith-Johnsen et al. (2020) ,
The Cryosphere, 15 , pp. 2251-2254 .
doi:10.5194/tc-15-2251-2021 , hdl:10013/epic.d042d462-959f-4516-a28d-97f99676c64b
[thumbnail of tc-15-2251-2021.pdf]
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Article
Westhoff, J. , Stoll, N. ORCID: https://orcid.org/0000-0002-3219-8395, Franke, S. ORCID: https://orcid.org/0000-0001-8462-4379, Weikusat, I. ORCID: https://orcid.org/0000-0002-3023-6036, Bons, P. , Kerch, J. ORCID: https://orcid.org/0000-0002-7200-6837, Jansen, D. ORCID: https://orcid.org/0000-0002-4412-5820, Kipfstuhl, S. ORCID: https://orcid.org/0000-0003-1495-5273 and Dahl-Jensen, D. (2021)
A stratigraphy-based method for reconstructing ice core orientation ,
Annals of Glaciology, 62 (85-86), pp. 191-202 .
doi:10.1017/AOG.2020.76 , hdl:10013/epic.f05be71f-3085-49ea-a5a9-fc03f024c3d8
[thumbnail of a-stratigraphy-based-method-for-reconstructing-ice-core-orientation.pdf]
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Article
Jansen, D. ORCID: https://orcid.org/0000-0002-4412-5820, Llorens Verde, M. G. , Westhoff, J. , Steinbach, F. , Kipfstuhl, S. , Bons, P. D. , Griera, A. and Weikusat, I. ORCID: https://orcid.org/0000-0002-3023-6036 (2016)
Small-scale disturbances in the stratigraphy of the NEEM ice core: observations and numerical model simulations ,
The Cryosphere, 10 , pp. 359-370 .
doi:10.5194/tc-10-359-2016 , hdl:10013/epic.46883
[thumbnail of Jansenetal2016.pdf]
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Thesis

Thesis -Bachelor
Westhoff, J. (2014)
Small Scale Folding in NEEM Ice Core ,
Bachelor thesis, Eberhard Karls Universität Tübingen.
hdl:10013/epic.44229
[thumbnail of BA-Westhoff.pdf]
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Conference

Conference -Poster
Westhoff, J. , Bons, P. , Stoll, N. , Weikusat, I. , Zeppenfeld, C. , Erhardt, T. and Dahl-Jensen, D. (2024)
Duplex Structures in the EastGRIP Ice Core - the Loss of Stratigraphic Integrity ,
doi:10.5194/egusphere-egu24-15771 , hdl:10013/epic.a2029ecc-ad66-4837-9f52-eca917975eaf
[thumbnail of EGU24-15771-print.pdf]
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Conference -Lecture
Stoll, N. , Hörhold, M. , Westhoff, J. , Erhardt, T. , Bohleber, P. , Eichler, J. , Svensson, A. , Zeising, O. , Gerber, T. , Franke, S. ORCID: https://orcid.org/0000-0001-8462-4379, Rathmann, N. , Jansen, D. , Richards, D. , Streng, K. , Kerch, J. , Eisen, O. ORCID: https://orcid.org/0000-0002-6380-962X, Dahl-Jensen, D. , Barbante, C. and Weikusat, I. (2023)
News from the EastGRIP ice core - on microstructure, impurities and the bridging of different scales
hdl:10013/epic.e89661a6-d9bd-4b83-b0d2-aafa647039f0
[thumbnail of AGU2023_Stoll.pdf]
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Conference -Lecture
Eisen, O. ORCID: https://orcid.org/0000-0002-6380-962X, Franke, S. ORCID: https://orcid.org/0000-0001-8462-4379, Bons, P. D. , Westhoff, J. , Weikusat, I. , Binder, T. , Streng, K. , Steinhage, D. , Helm, V. ORCID: https://orcid.org/0000-0001-7788-9328, Paden, J. D. , Eagles, G. and Jansen, D. (2023)
Greenland ice-stream dynamics: short-lived and agile?
doi:10.5194/egusphere-egu23-6770 , hdl:10013/epic.43e33a48-00cc-49c5-ae3a-67bbcf8eb997
[thumbnail of EGU23-6770-print.pdf]
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Conference -Lecture
Franke, S. ORCID: https://orcid.org/0000-0001-8462-4379, Bons, P. , Westhoff, J. , Binder, T. , Streng, K. , Steinhage, D. , Helm, V. ORCID: https://orcid.org/0000-0001-7788-9328, Paden, J. , Eagles, G. and Jansen, D. (2023)
How dynamic is the Greenland Ice Sheet? Insights from reconstructed paleo ice-stream activity in Northern Central Greenland.
hdl:10013/epic.b9724b9e-3bb7-4815-aed0-3bf31f009a6b
[thumbnail of 2023_02_08_IGS_Seminar.pdf]
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Conference -Poster
Stoll, N. ORCID: https://orcid.org/0000-0002-3219-8395, Bohleber, P. , Hörhold, M. ORCID: https://orcid.org/0000-0002-9110-0909, Erhardt, T. ORCID: https://orcid.org/0000-0002-6683-6746, Eichler, J. , Westhoff, J. , Jensen, C. M. , Kerch, J. ORCID: https://orcid.org/0000-0002-7200-6837, Jansen, D. ORCID: https://orcid.org/0000-0002-4412-5820, Svensson, A. , Dahl-Jensen, D. , Barbante, C. and Weikusat, I. ORCID: https://orcid.org/0000-0002-3023-6036 (2022)
Impurities throughout the EGRIP ice core – a microstructural perspective ,
International Partnership in Ice Core Sciences (IPICS), Crans-Montana, Switzerland, 2 October 2022 - 7 October 2022 .
[thumbnail of IPICS_poster_Stoll_Greenland.pdf]
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Conference -Poster
Westhoff, J. , Weikusat, I. , Blunier, T. , Bons, P. , Dyonisius, M. , Fain, X. , Franke, S. ORCID: https://orcid.org/0000-0001-8462-4379, Freitag, J. , Jansen, D. , Kerch, J. , Kipfstuhl, J. , Kjær, H. A. , Martinerie, P. , Sinnl, G. , Steffensen, J. P. , Stoll, N. , Svensson, A. , Vallelonga, P. , Vinther, B. and Dahl-Jensen, D. (2022)
Visual Stratigraphy of the EastGRIP Ice Core - Of the Lost Ice Core Orientation, Deformation Structures, Extreme Warm Events, and Trapped Ancient Air
hdl:10013/epic.d19acaa6-93ae-44e2-852a-8ffda7a2b050
[thumbnail of IPICS_ThesisPoster_v2_online(1).pdf]
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Conference -Talk
Stoll, N. ORCID: https://orcid.org/0000-0002-3219-8395, Westhoff, J. , Hörhold, M. ORCID: https://orcid.org/0000-0002-9110-0909, Erhardt, T. ORCID: https://orcid.org/0000-0002-6683-6746, Kerch, J. ORCID: https://orcid.org/0000-0002-7200-6837, Jansen, D. ORCID: https://orcid.org/0000-0002-4412-5820, Eichler, J. , Svensson, A. , Dahl-Jensen, D. and Weikusat, I. ORCID: https://orcid.org/0000-0002-3023-6036 (2022)
Micro-inclusions and cloudy bands in EastGRIP glacial ice ,
Cryosphere 2022, Reykjavik, Iceland, 22 August 2022 - 26 August 2022 .

Conference -Talk
Stoll, N. ORCID: https://orcid.org/0000-0002-3219-8395, Westhoff, J. , Hörhold, M. ORCID: https://orcid.org/0000-0002-9110-0909, Erhardt, T. ORCID: https://orcid.org/0000-0002-6683-6746, Kerch, J. ORCID: https://orcid.org/0000-0002-7200-6837, Jansen, D. ORCID: https://orcid.org/0000-0002-4412-5820, Eichler, J. , Svensson, A. , Dahl-Jensen, D. and Weikusat, I. ORCID: https://orcid.org/0000-0002-3023-6036 (2022)
Micro-inclusions and cloudy bands in EastGRIP glacial ice ,
AWI PhD Days 2022, Helgoland, Germany, 25 April 2022 - 28 April 2022 .

Conference -Invited talk
Franke, S. ORCID: https://orcid.org/0000-0001-8462-4379, Bons, P. D. , Westhoff, J. , Weikusat, I. ORCID: https://orcid.org/0000-0002-3023-6036, Binder, T. , Streng, K. , Steinhage, D. ORCID: https://orcid.org/0000-0003-4737-9751, Helm, V. ORCID: https://orcid.org/0000-0001-7788-9328, Eisen, O. ORCID: https://orcid.org/0000-0002-6380-962X, Paden, J. , Eagles, G. ORCID: https://orcid.org/0000-0001-5325-0810 and Jansen, D. ORCID: https://orcid.org/0000-0002-4412-5820 (2022)
NEGIS - A unique feature in Greenland? ,
EastGRIP International Spring Seminar Series (EISSS) 2022, Online, March 2022 - April 2022 .
hdl:10013/epic.cc7ceca7-0a6b-4558-a1f2-8d17aaf59a24
[thumbnail of EGRIP_Seminar_2022_March_29_sfranke.pdf]
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Conference -Talk
Stoll, N. ORCID: https://orcid.org/0000-0002-3219-8395, Weikusat, I. ORCID: https://orcid.org/0000-0002-3023-6036, Eichler, J. , Hörhold, M. ORCID: https://orcid.org/0000-0002-9110-0909, Erhardt, T. ORCID: https://orcid.org/0000-0002-6683-6746, Jensen, C. M. , Behrens, M. ORCID: https://orcid.org/0000-0001-9275-4333, Twarloh, B. , Westhoff, J. and Dahl-Jensen, D. (2021)
Impurities and deformation in the EGRIP ice core ,
AWI PhD Days 2021, Bremerhaven, Germany, 28 September 2021 - 1 October 2021 .

Conference -Talk
Stoll, N. ORCID: https://orcid.org/0000-0002-3219-8395, Weikusat, I. ORCID: https://orcid.org/0000-0002-3023-6036, Eichler, J. , Hörhold, M. ORCID: https://orcid.org/0000-0002-9110-0909, Erhardt, T. ORCID: https://orcid.org/0000-0002-6683-6746, Jensen, C. M. , Behrens, M. ORCID: https://orcid.org/0000-0001-9275-4333, Twarloh, B. , Westhoff, J. and Dahl-Jensen, D. (2021)
Impurities and deformation in the EGRIP ice core ,
International Glaciological Society
 Global Seminar Series, Online .

Conference -Lecture
Morris, V. , Westhoff, J. , Vaughn, B. , Weikusat, I. , Jones, T. , Markle, B. , Hughes, A. , Skorski, W. , Brashear, C. , Gkinis, V. , Vinther, B. and White, J. (2021)
Post-depositional processes visible in the integration of EGRIP high-resolution water isotope record and visual stratigraphy
doi:10.5194/egusphere-egu21-14131 , hdl:10013/epic.77fe1035-8492-40da-a8dc-994e1aaddb48
[thumbnail of CO Meeting Organizer EGU21.pdf]
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Conference -Talk
Westhoff, J. , Stoll, N. ORCID: https://orcid.org/0000-0002-3219-8395, Franke, S. ORCID: https://orcid.org/0000-0001-8462-4379, Weikusat, I. ORCID: https://orcid.org/0000-0002-3023-6036, Bons, P. D. , Kerch, J. ORCID: https://orcid.org/0000-0002-7200-6837, Jansen, D. ORCID: https://orcid.org/0000-0002-4412-5820, Kipfstuhl, S. and Dahl-Jensen, D. (2021)
A stratigraphy-based method for reconstructing ice core orientation ,
EGU General Assembly 2021, Online, 19 April 2021 - 30 April 2021 .
doi:10.5194/egusphere-egu21-13150 , hdl:10013/epic.43c7bdbb-c0cd-4fcc-8e02-b543702964e0
[thumbnail of EGU21-13150_presentation.pdf]
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Conference -Talk
Franke, S. ORCID: https://orcid.org/0000-0001-8462-4379, Westhoff, J. , Bons, P. D. , Weikusat, I. ORCID: https://orcid.org/0000-0002-3023-6036, Binder, T. , Steinhage, D. ORCID: https://orcid.org/0000-0003-4737-9751, Helm, V. ORCID: https://orcid.org/0000-0001-7788-9328, Eisen, O. ORCID: https://orcid.org/0000-0002-6380-962X and Jansen, D. ORCID: https://orcid.org/0000-0002-4412-5820 (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
[thumbnail of 2020_10_29_ESA.pdf]
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Conference -Talk
Stoll, N. ORCID: https://orcid.org/0000-0002-3219-8395, Weikusat, I. ORCID: https://orcid.org/0000-0002-3023-6036, Kerch, J. ORCID: https://orcid.org/0000-0002-7200-6837, Eichler, J. , Shigeyama, W. , Homma, T. , Jansen, D. ORCID: https://orcid.org/0000-0002-4412-5820, Franke, S. ORCID: https://orcid.org/0000-0001-8462-4379, Kuiper, E. J. , Wallis, D. , Westhoff, J. , Saruya, T. , Faria, S. H. , Kipfstuhl, S. , Goto-Azuma, K. , Azuma, N. and Dahl-Jensen, D. (2020)
The upper 2121 m at EastGRIP - Results from physical properties of NEGIS ,
EGU General Assembly 2020, 4 May 2020 - 8 May 2020 .
hdl:10013/epic.297512ca-f3cb-48db-982e-8ef7cde1f908

Conference -Talk
Weikusat, I. ORCID: https://orcid.org/0000-0002-3023-6036, Wallis, D. , Franke, S. ORCID: https://orcid.org/0000-0001-8462-4379, Stoll, N. ORCID: https://orcid.org/0000-0002-3219-8395, Westhoff, J. , Hansen, S. B. , Popp, T. J. , Wilhelms, F. ORCID: https://orcid.org/0000-0001-7688-3135 and Dahl-Jensen, D. (2020)
Issues with fracturing ice during an ice drilling project in Greenland (EastGRIP) ,
EGU General Assembly 2020, 4 May 2020 - 8 May 2020 .
doi:10.5194/egusphere-egu2020-21768 , hdl:10013/epic.704fe3cc-c192-4696-90b3-dbfdeb2b5d47
[thumbnail of EGU2020-21768_presentation.pdf]
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Conference -Talk
Stoll, N. ORCID: https://orcid.org/0000-0002-3219-8395, Weikusat, I. ORCID: https://orcid.org/0000-0002-3023-6036, Kerch, J. ORCID: https://orcid.org/0000-0002-7200-6837, Kleitz, I. , Eichler, J. , Shigeyama, W. , Homma, T. , Jansen, D. ORCID: https://orcid.org/0000-0002-4412-5820, Bayer-Giraldi, M. ORCID: https://orcid.org/0000-0002-7158-5478, Kuiper, E. J. , Westhoff, J. , Saruya, T. , Hellmann, S. , Franke, S. ORCID: https://orcid.org/0000-0001-8462-4379, Götz, P. , Goto-Azuma, K. , Azuma, N. , Faria, S. H. , Kipfstuhl, S. and Dahl-Jensen, D. (2019)
EastGRIP ice down to 2121m - fabric and microstructure ,
EastGRIP Steering Committee, Copenhagen, Denmark, 11 November 2020 - 16 November 2020 .
hdl:10013/epic.6e448af3-d2ad-421c-afc6-af323d948d1d
[thumbnail of SC2019_microstructuredownto2121m.pdf]
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Conference -Poster
Westhoff, J. , Weikusat, I. ORCID: https://orcid.org/0000-0002-3023-6036, Kipfstuhl, S. , Jansen, D. ORCID: https://orcid.org/0000-0002-4412-5820, Svensson, A. and Dahl-Jensen, D. (2019)
Deformation Features and Disturbances in the Stratigraphy of the EastGRIP Ice Core ,
EGU General Assembly 2019, Vienna, 7 April 2019 - 12 April 2019 .
hdl:10013/epic.7dae03b6-e3a3-42f7-bd32-ab9d40211b7d
[thumbnail of 20190405-EGU_JulienWesthoff.pdf]
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Conference -Invited talk
Stoll, N. ORCID: https://orcid.org/0000-0002-3219-8395, Weikusat, I. ORCID: https://orcid.org/0000-0002-3023-6036, Kerch, J. ORCID: https://orcid.org/0000-0002-7200-6837, Kleitz, I. , Eichler, J. , Shigeyama, W. , Homma, T. , Jansen, D. ORCID: https://orcid.org/0000-0002-4412-5820, Bayer-Giraldi, M. ORCID: https://orcid.org/0000-0002-7158-5478, Kuiper, E. J. , Westhoff, J. , Saruya, T. , Faria, S. H. , Kipfstuhl, S. and Dahl-Jensen, D. (2018)
Physical properties of the NEGIS ice core - The upper 1700m in EGRIP ,
The Ninth Symposium on Polar Science, National Institute of Polar Research (NIPR), Tokyo, Japan, 4 December 2018 - 7 December 2018 .
hdl:10013/epic.1a08b775-038a-441b-a8e0-6b8a14040868
[thumbnail of NIPR2018_Theupper1700m.pdf]
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Conference -Poster
Stoll, N. ORCID: https://orcid.org/0000-0002-3219-8395, Kerch, J. ORCID: https://orcid.org/0000-0002-7200-6837, Kleitz, I. , Eichler, J. , Shigeyama, W. , Homma, T. , Jansen, D. ORCID: https://orcid.org/0000-0002-4412-5820, Bayer-Giraldi, M. ORCID: https://orcid.org/0000-0002-7158-5478, Kuiper, E. J. , Westhoff, J. , Saruya, T. , Faria, S. H. , Kipfstuhl, S. , Dahl-Jensen, D. and Weikusat, I. ORCID: https://orcid.org/0000-0002-3023-6036 (2018)
An analysis of the influence of deformation and recrystallisation on microstructures of the EastGRIP ice core ,
The Ninth Symposium on Polar Science, National Institute of Polar Research (NIPR), Tokyo, Japan, 4 December 2018 - 7 December 2018 .
hdl:10013/epic.ac5aa782-8bd7-4ec6-9d42-0618afa24d7d
[thumbnail of NIPR_Poster_vertical_A0.pdf]
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Conference -Talk
Jansen, D. ORCID: https://orcid.org/0000-0002-4412-5820, Llorens Verde, M. G. , Westhoff, J. , Steinbach, F. , Kipfstuhl, S. , Bons, P. D. , Griera, A. , Eichler, J. and Weikusat, I. ORCID: https://orcid.org/0000-0002-3023-6036 (2016)
Small-scale disturbances in the stratigraphy of ice cores: observations and numerical model simulations ,
EGU General Assembly 2016, Vienna, Austria, 17 April 2016 - 22 April 2016 .
hdl:10013/epic.47800
[thumbnail of EGU2016_kinkbands.pdf]
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Conference -Poster
Jansen, D. ORCID: https://orcid.org/0000-0002-4412-5820, Llorens, M. G. , Westhoff, J. , Steinbach, F. , Bons, P. D. , Griera, A. , Weikusat, I. ORCID: https://orcid.org/0000-0002-3023-6036 and Kipfstuhl, S. (2015)
Observations and modelling of centimetre-scale folding in the NEEM ice core ,
International Symposium on contemporary ice sheet dynamics, Cambridge, UK, 16 August 2015 - 21 August 2015 .
hdl:10013/epic.46069

Conference -Talk
Jansen, D. ORCID: https://orcid.org/0000-0002-4412-5820, Llorens, M. G. , Westhoff, J. , Steinbach, F. , Bons, P. D. , Kipfstuhl, S. , Griera, A. and Weikusat, I. ORCID: https://orcid.org/0000-0002-3023-6036 (2015)
Small scale folding observed in the NEEM ice core ,
EGU General Assembly 2015, Vienna, Austria, 2015 - unspecified .
hdl:10013/epic.45428

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