Articles | Volume 15, issue 4
https://doi.org/10.5194/tc-15-1697-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-15-1697-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
07 Apr 2021
Research article |
| 07 Apr 2021
| 07 Apr 2021
Modeling intensive ocean–cryosphere interactions in Lützow-Holm Bay, East Antarctica
Kazuya Kusahara
CORRESPONDING AUTHOR
Japan Agency for Marine-Earth Science and Technology (JAMSTEC),
Yokohama, Kanagawa, 236-0001, Japan
Daisuke Hirano
Institute of Low Temperature Science, Hokkaido University, Sapporo,
Hokkaido, 060-0819, Japan
Arctic Research Center, Hokkaido University, Sapporo, Hokkaido,
001-0021, Japan
Masakazu Fujii
National Institute of Polar Research, Tachikawa, Tokyo, 190-8518,
Japan
Graduate University for Advanced Studies (SOKENDAI), Tachikawa, Tokyo, 190-8518, Japan
Alexander D. Fraser
Australian Antarctic Program Partnership, University of Tasmania,
Hobart, Tasmania, 7004, Australia
Takeshi Tamura
National Institute of Polar Research, Tachikawa, Tokyo, 190-8518,
Japan
Graduate University for Advanced Studies (SOKENDAI), Tachikawa, Tokyo, 190-8518, Japan
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The Cryosphere Discuss., https://doi.org/10.5194/tcd-9-6187-2015, https://doi.org/10.5194/tcd-9-6187-2015, 2015
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Related subject area
Discipline: Other | Subject: Ocean Interactions
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Subglacial discharge effects on basal melting of a rotating, idealized ice shelf
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High frequency broadband acoustic systems as a tool for high latitude glacial fjord research
Ice mélange melt changes observed water column stratification at a tidewater glacier in Greenland
Ice-shelf freshwater triggers for the Filchner–Ronne Ice Shelf melt tipping point in a global ocean–sea-ice model
Fjord circulation induced by melting icebergs
Modeling seasonal-to-decadal ocean–cryosphere interactions along the Sabrina Coast, East Antarctica
Impact of icebergs on the seasonal submarine melt of Sermeq Kujalleq
Reversal of ocean gyres near ice shelves in the Amundsen Sea caused by the interaction of sea ice and wind
Impact of freshwater runoff from the southwest Greenland Ice Sheet on fjord productivity since the late 19th century
Drivers for Atlantic-origin waters abutting Greenland
Impact of West Antarctic ice shelf melting on Southern Ocean hydrography
Ice island thinning: rates and model calibration with in situ observations from Baffin Bay, Nunavut
Quantifying iceberg calving fluxes with underwater noise
Modeling the effect of Ross Ice Shelf melting on the Southern Ocean in quasi-equilibrium
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The Cryosphere, 18, 1315–1332, https://doi.org/10.5194/tc-18-1315-2024, https://doi.org/10.5194/tc-18-1315-2024, 2024
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A mathematical and conceptual model of how the melting of hundreds of icebergs generates currents within a fjord.
Kazuya Kusahara, Daisuke Hirano, Masakazu Fujii, Alexander D. Fraser, Takeshi Tamura, Kohei Mizobata, Guy D. Williams, and Shigeru Aoki
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This study focuses on the Totten and Moscow University ice shelves, East Antarctica. We used an ocean–sea ice–ice shelf model to better understand regional interactions between ocean, sea ice, and ice shelf. We found that a combination of warm ocean water and local sea ice production influences the regional ice shelf basal melting. Furthermore, the model reproduced the summertime undercurrent on the upper continental slope, regulating ocean heat transport onto the continental shelf.
Karita Kajanto, Fiammetta Straneo, and Kerim Nisancioglu
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Many outlet glaciers in Greenland are connected to the ocean by narrow glacial fjords, where warm water melts the glacier from underneath. Ocean water is modified in these fjords through processes that are poorly understood, particularly iceberg melt. We use a model to show how iceberg melt cools down Ilulissat Icefjord and causes circulation to take place deeper in the fjord than if there were no icebergs. This causes the glacier to melt less and from a smaller area than without icebergs.
Yixi Zheng, David P. Stevens, Karen J. Heywood, Benjamin G. M. Webber, and Bastien Y. Queste
The Cryosphere, 16, 3005–3019, https://doi.org/10.5194/tc-16-3005-2022, https://doi.org/10.5194/tc-16-3005-2022, 2022
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New observations reveal the Thwaites gyre in a habitually ice-covered region in the Amundsen Sea for the first time. This gyre rotates anticlockwise, despite the wind here favouring clockwise gyres like the Pine Island Bay gyre – the only other ocean gyre reported in the Amundsen Sea. We use an ocean model to suggest that sea ice alters the wind stress felt by the ocean and hence determines the gyre direction and strength. These processes may also be applied to other gyres in polar oceans.
Mimmi Oksman, Anna Bang Kvorning, Signe Hillerup Larsen, Kristian Kjellerup Kjeldsen, Kenneth David Mankoff, William Colgan, Thorbjørn Joest Andersen, Niels Nørgaard-Pedersen, Marit-Solveig Seidenkrantz, Naja Mikkelsen, and Sofia Ribeiro
The Cryosphere, 16, 2471–2491, https://doi.org/10.5194/tc-16-2471-2022, https://doi.org/10.5194/tc-16-2471-2022, 2022
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One of the questions facing the cryosphere community today is how increasing runoff from the Greenland Ice Sheet impacts marine ecosystems. To address this, long-term data are essential. Here, we present multi-site records of fjord productivity for SW Greenland back to the 19th century. We show a link between historical freshwater runoff and productivity, which is strongest in the inner fjord – influenced by marine-terminating glaciers – where productivity has increased since the late 1990s.
Laura C. Gillard, Xianmin Hu, Paul G. Myers, Mads Hvid Ribergaard, and Craig M. Lee
The Cryosphere, 14, 2729–2753, https://doi.org/10.5194/tc-14-2729-2020, https://doi.org/10.5194/tc-14-2729-2020, 2020
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Greenland's glaciers in contact with the ocean drain the majority of the ice sheet (GrIS). Deep troughs along the shelf branch into fjords, connecting glaciers with ocean waters. The heat from the ocean entering deep troughs may then accelerate the mass loss. Onshore heat transport through troughs was investigated with an ocean model. Processes that drive the delivery of ocean heat respond differently by region to increasing GrIS meltwater, mean circulation, and filtering out of storms.
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The Cryosphere, 14, 2205–2216, https://doi.org/10.5194/tc-14-2205-2020, https://doi.org/10.5194/tc-14-2205-2020, 2020
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Previous studies have shown accelerations of West Antarctic glaciers, implying that basal melt rates of these glaciers were small and increased in the middle of the 20th century. We conduct coupled sea ice–ice shelf–ocean simulations with different levels of ice shelf melting from West Antarctic glaciers. This study reveals how far and how quickly glacial meltwater from ice shelves in the Amundsen and Bellingshausen seas propagates downstream into the Ross Sea and along the East Antarctic coast.
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Large tabular icebergs (
ice islands) are symbols of climate change as well as marine hazards. We measured thickness along radar transects over two visits to a 14 km2 Arctic ice island and left automated equipment to monitor surface ablation and thickness over 1 year. We assess variation in thinning rates and calibrate an ice–ocean melt model with field data. Our work contributes to understanding ice island deterioration via logistically complex fieldwork in a remote environment.
Oskar Glowacki and Grant B. Deane
The Cryosphere, 14, 1025–1042, https://doi.org/10.5194/tc-14-1025-2020, https://doi.org/10.5194/tc-14-1025-2020, 2020
Short summary
Short summary
Marine-terminating glaciers are shrinking rapidly in response to the warming climate and thus provide large quantities of fresh water to the ocean system. However, accurate estimates of ice loss at the ice–ocean boundary are difficult to obtain. Here we demonstrate that ice mass loss from iceberg break-off (calving) can be measured by analyzing the underwater noise generated as icebergs impact the sea surface.
Xiying Liu
The Cryosphere, 12, 3033–3044, https://doi.org/10.5194/tc-12-3033-2018, https://doi.org/10.5194/tc-12-3033-2018, 2018
Short summary
Short summary
Numerical experiments have been performed to study the effect of basal melting of the Ross Ice Shelf on the ocean southward of 35° S. It is shown that the melt rate averaged over the entire Ross Ice Shelf is 0.253 m year-1, which is associated with a freshwater flux of 3150 m3 s-1. The extra freshwater flux decreases the salinity in the Southern Ocean substantially, leading to anomalies in circulation, sea ice, and heat transport in certain parts of the ocean.
Cited articles
Adcroft, A., Hill, C., and Marshall, J.: Representation of Topography by
Shaved Cells in a Height Coordinate Ocean Model, Mon. Weather Rev., 125,
2293–2315, https://doi.org/10.1175/1520-0493(1997)125<2293:rotbsc>2.0.co;2, 2002.
Amante, C. and Eakins, B. W.: ETOPO1 1 Arc-Minute Global Relief Model:
Procedures, Data Sources and Analysis, NOAA Technical Memorandum NESDIS NGDC-24, National Geophysical Data Center, Marine Geology and Geophysics Division, Boulder, CO, USA, 2009.
Aoki, S.: Breakup of land-fast sea ice in Lützow-Holm Bay, East
Antarctica, and its teleconnection to tropical Pacific sea surface
temperatures, Geophys. Res. Lett., 44, 3219–3227,
https://doi.org/10.1002/2017GL072835, 2017.
Armitage, T. W. K., Kwok, R., Thompson, A. F., and Cunningham, G.: Dynamic
Topography and Sea Level Anomalies of the Southern Ocean: Variability and
Teleconnections, J. Geophys. Res.-Oceans, 123, 613–630,
https://doi.org/10.1002/2017JC013534, 2018.
Assmann, K. M., Jenkins, A., Shoosmith, D. R., Walker, D. P., Jacobs, S. S.,
and Nicholls, K. W.: Variability of circumpolar deep water transport onto
the Amundsen Sea Continental shelf through a shelf break trough, J. Geophys.
Res.-Oceans, 118, 6603–6620, https://doi.org/10.1002/2013JC008871, 2013.
Bitz, C. M. and Lipscomb, W. H.: An energy-conserving thermodynamic model of
sea ice, J. Geophys. Res., 104, 15669–15677, https://doi.org/10.1029/1999JC900100,
1999.
Chavanne, C. P., Heywood, K. J., Nicholls, K. W., and Fer, I.: Observations
of the Antarctic Slope undercurrent in the Southeastern Weddell Sea,
Geophys. Res. Lett., 37, L13601, https://doi.org/10.1029/2010GL043603, 2010.
Conkright, M., Levitus, S., O'Brien, T., Boyer, T. P., Stephens, C.,
Johnson, D., Baranova, O., Antonov, J., Gelfeld, R., Rochester, J., and Forgy,
C.: World Ocean Database 1998: Documentation and quality control version
2.0, National Oceanographic Data Center, Internal Report, Silver Spring, USA, available at: https://repository.library.noaa.gov/view/noaa/1173/noaa_1173_DS1.pdf (last access: 18 August 2020), 1999.
Convey, P., Bindschadler, R., di Prisco, G., Fahrbach, E., Gutt, J.,
Hodgson, D. A., Mayewski, P. A., Summerhayes, C. P., and Turner, J.:
Antarctic climate change and the environment, Antarct. Sci., 21, 541,
https://doi.org/10.1017/s0954102009990642, 2009.
Dee, D. P., Uppala, S. M., Simmons, A. J., Berrisford, P., Poli, P.,
Kobayashi, S., Andrae, U., Balmaseda, M. A., Balsamo, G., Bauer, P.,
Bechtold, P., Beljaars, A. C. M., van de Berg, L., Bidlot, J., Bormann, N.,
Delsol, C., Dragani, R., Fuentes, M., Geer, A. J., Haimberger, L., Healy, S.
B., Hersbach, H., Hólm, E. V., Isaksen, L., Kållberg, P.,
Köhler, M., Matricardi, M., Mcnally, A. P., Monge-Sanz, B. M.,
Morcrette, J. J., Park, B. K., Peubey, C., de Rosnay, P., Tavolato, C.,
Thépaut, J. N., and Vitart, F.: The ERA-Interim reanalysis: Configuration
and performance of the data assimilation system, Q. J. Roy. Meteor. Soc.,
137, 553–597, https://doi.org/10.1002/qj.828, 2011.
Depoorter, M. A., Bamber, J. L., Griggs, J. A., Lenaerts, J. T. M.,
Ligtenberg, S. R. M., van den Broeke, M. R., and Moholdt, G.: Calving fluxes
and basal melt rates of Antarctic ice shelves, Nature, 502, 89–92,
https://doi.org/10.1038/nature12567, 2013.
Dotto, T. S., Naveira Garabato, A., Bacon, S., Tsamados, M., Holland, P. R.,
Hooley, J., Frajka-Williams, E., Ridout, A., and Meredith, M. P.: Variability
of the Ross Gyre, Southern Ocean: Drivers and Responses Revealed by
Satellite Altimetry, Geophys. Res. Lett., 45, 6195–6204,
https://doi.org/10.1029/2018GL078607, 2018.
Fraser, A. D., Massom, R. A., Michael, K. J., Galton-Fenzi, B. K., and
Lieser, J. L.: East antarctic landfast sea ice distribution and variability,
2000–2008, J. Climate, 25, 1137–1156, https://doi.org/10.1175/JCLI-D-10-05032.1, 2012.
Fraser, A. D., Ohshima, K. I., Nihashi, S., Massom, R. A., Tamura, T.,
Nakata, K., Williams, G. D., Carpentier, S., and Willmes, S.: Landfast ice
controls on sea-ice production in the Cape Darnley Polynya: A case study,
Remote Sens. Environ., 233, 111315, https://doi.org/10.1016/j.rse.2019.111315, 2019.
Fraser, A. D., Massom, R. A., Ohshima, K. I., Willmes, S., Kappes, P. J., Cartwright, J., and Porter-Smith, R.: High-resolution mapping of circum-Antarctic landfast sea ice distribution, 2000–2018, Earth Syst. Sci. Data, 12, 2987–2999, https://doi.org/10.5194/essd-12-2987-2020, 2020.
Giles, A. B., Massom, R. A., and Lytle, V. I.: Fast-ice distribution in East
Antarctica during 1997 and 1999 determined using RADARSAT data, J. Geophys.
Res., 113, C02S14, https://doi.org/10.1029/2007JC004139, 2008.
Gille, S. T., McKee, D. C., and Martinson, D. G.: Temporal changes in the
Antarctic circumpolar current: Implications for the Antarctic continental
shelves, Oceanography, 29, 96–105, https://doi.org/10.5670/oceanog.2016.102, 2016.
Gordon, A. L.: Current Systems in the Southern Ocean, in: Encyclopedia of Ocean Sciences,
Second Edition, edited by: Steele, J. H., Academic Press, Oxford, 735–743, https://doi.org/10.1016/B978-012374473-9.00369-6, 2008.
Gwyther, D. E., Kusahara, K., Asay-Davis, X. S., Dinniman, M. S., and
Galton-Fenzi, B. K.: Vertical processes and resolution impact ice shelf
basal melting: A multi-model study, Ocean Model., 147, 101569,
https://doi.org/10.1016/j.ocemod.2020.101569, 2020.
Hellmer, H. H. and Olbers, D. J.: A two-dimensional model for the
thermohaline circulation under an ice shelf, Antarct. Sci., 1, 325–336,
https://doi.org/10.1017/S0954102089000490, 1989.
Heywood, K. J., Locarnini, R. A., Frew, R. D., Dennis, P. F., and King, B.
A.: Transport and Water Masses of the Antarctic Slope Front System in The
Eastern Weddell Sea, in: Ocean, Ice, and Atmosphere: Interactions at the Antarctic Continental Margin, edited by: Jacobs, S. S. and Weiss, R. F., American Geophysical Union, 203–214, 1998.
Hibler, W. D.: A dynamic thermodynamic sea ice model, J. Phys. Oceanogr.,
9, 815–846, https://doi.org/10.1175/1520-0485(1979)009<0815:ADTSIM>2.0.CO;2, 1979.
Hirano, D., Tamura, T., Kusahara, K., Ohshima, K. I., Nicholls, K. W.,
Ushio, S., Simizu, D., Ono, K., Fujii, M., Nogi, Y., and Aoki, S.: Strong
ice-ocean interaction beneath Shirase Glacier Tongue in East Antarctica,
Nat. Commun., 11, 4221, https://doi.org/10.1038/s41467-020-17527-4, 2020.
Holland, D. M. and Jenkins, A.: Modeling thermodynamic ice-ocean
interactions at the base of an ice shelf, J. Phys. Oceanogr., 29,
1787–1800, https://doi.org/10.1175/1520-0485(1999)029<1787:MTIOIA>2.0.CO;2, 1999.
Hunke, E. C. and Dukowicz, J. K.: An elastic-viscous-plastic model for sea
ice dynamics, J. Phys. Oceanogr., 27, 1849–1867,
https://doi.org/10.1175/1520-0485(1997)027<1849:AEVPMF>2.0.CO;2,
1997.
IOC, IHO and BODC: GEBCO Digital Atlas. Centenary, Intergovernmental Oceanographic Commission, International Hydrographic Organization and British Oceanographic Data Centre, available at: http://www.gebco.net/data_and_products/gebco_digital_atlas/ (last access: 18 August 2020), 2003.
Jacobs, S. S., Hellmer, H. H., and Jenkins, A.: Antarctic Ice Sheet melting
in the southeast Pacific, Geophys. Res. Lett., 23, 957,
https://doi.org/10.1029/96GL00723, 1996.
Jenkins, A., Shoosmith, D., Dutrieux, P., Jacobs, S., Kim, T. W., Lee, S.
H., Ha, H. K., and Stammerjohn, S.: West Antarctic Ice Sheet retreat in the
Amundsen Sea driven by decadal oceanic variability, Nat. Geosci., 11, 733–738,
https://doi.org/10.1038/s41561-018-0207-4, 2018.
Kara, A. B., Rochford, P. A., and Hurlburt, H. E.: Efficient and accurate
bulk parameterizations of air-sea fluxes for use in general circulation
models, J. Atmos. Ocean. Technol., 17, 1421–1438,
https://doi.org/10.1175/1520-0426(2000)017<1421:EAABPO>2.0.CO;2,
2000.
Kusahara, K. and Hasumi, H.: Modeling Antarctic ice shelf responses to
future climate changes and impacts on the ocean, J. Geophys. Res.-Oceans,
118, 2454–2475, https://doi.org/10.1002/jgrc.20166, 2013.
Kusahara, K. and Hasumi, H.: Pathways of basal meltwater from Antarctic ice
shelves: A model study, J. Geophys. Res.-Oceans, 119, 5690–5704,
https://doi.org/10.1002/2014JC009915, 2014.
Kusahara, K., Hasumi, H., and Tamura, T.: Modeling sea ice production and
dense shelf water formation in coastal polynyas around East Antarctica, J.
Geophys. Res.-Oceans, 115, C10006, https://doi.org/10.1029/2010JC006133, 2010.
Kusahara, K., Williams, G. D., Tamura, T., Massom, R., and Hasumi, H.: Dense
shelf water spreading from Antarctic coastal polynyas to the deep Southern
Ocean: A regional circumpolar model study, J. Geophys. Res.-Oceans, 122,
6238–6253, https://doi.org/10.1002/2017JC012911, 2017.
Kusahara, K., Hirano, D., Fujii, M., Fraser, A., and Tamura, T.: Data for “Modeling intensive ocean-cyrosphere interactions in Lützow-Holm Bay, East Antarctica”, Mendeley Data, V1, https://doi.org/10.17632/z6w4xd6s3s.1, 2021.
Losch, M.: Modeling ice shelf cavities in a z coordinate ocean general
circulation model, J. Geophys. Res., 113, C08043, https://doi.org/10.1029/2007JC004368,
2008.
Marsland, S. J., Bindoff, N. L., Williams, G. D., and Budd, W. F.: Modeling
water mass formation in the Mertz Glacier Polynya and Adélie Depression,
East Antarctica, J. Geophys. Res., 109, C11003,
https://doi.org/10.1029/2004JC002441, 2004.
Marsland, S. J., Church, J. A., Bindoff, N. L., and Williams, G. D.:
Antarctic coastal polynya response to climate change, J. Geophys. Res.-Oceans, 112, C07009, https://doi.org/10.1029/2005JC003291, 2007.
Massom, R. A., Hill, K. L., Lytle, V. I., Worby, A. P., Paget, M. J., and
Allison, I.: Effects of regional fast-ice and iceberg distributions on the
behaviour of the Mertz Glacier polynya, East Antarctica, Ann. Glaciol., 33,
391–398, https://doi.org/10.3189/172756401781818518, 2001.
Massom, R. A., Giles, B., Fricker, H. A., Warner, R. C., Legrésy, B.,
Hyland, G., Young, N., and Fraser, A. D.: Examining the interaction between
multi-year landfast sea ice and the Mertz Glacier Tongue, East Antarctica:
Another factor in ice sheet stability?, J. Geophys. Res.-Oceans, 115,
1–15, https://doi.org/10.1029/2009JC006083, 2010.
McCartney, M. S. and Donohue, K. A.: A deep cyclonic gyre in the
Australian-Antarctic Basin, Prog. Oceanogr., 75, 675–750,
https://doi.org/10.1016/j.pocean.2007.02.008, 2007.
Mellor, G. L. and Kantha, L.: An ice-ocean coupled model, J. Geophys. Res.,
94, 10937–10954, 1989.
Mizobata, K., Shimada, K., Aoki, S., and Kitade, Y.: The Cyclonic Eddy Train
in the Indian Ocean Sector of the Southern Ocean as Revealed by Satellite
Radar Altimeters and In Situ Measurements, J. Geophys. Res.-Oceans, 125, e2019JC015994,
https://doi.org/10.1029/2019JC015994, 2020.
Morales Maqueda, M. A., Willmott, A. J., and Biggs, N. R. T.: Polynya
Dynamics: A review of observations and modeling, Rev. Geophys., 42, RG1004,
https://doi.org/10.1029/2002RG000116, 2004.
Moriwaki, K. and Yoshida, Y.: Submarine topography of Lutzow Holm Bay,
Antarctica, Mem. Inst. Polar Res. Tokyo, 28, 247–258, 1983.
Nakamura, K., Doi, K., and Shibuya, K.: Fluctuations in the flow velocity of
the Antarctic Shirase Glacier over an 11-year period, Polar Sci., 4, 443–455,
https://doi.org/10.1016/j.polar.2010.04.010, 2010.
Nihashi, S. and Ohshima, K. I.: Circumpolar mapping of Antarctic coastal
polynyas and landfast sea ice: relationship and variability, J. Climate,
28, 3650–3670, https://doi.org/10.1175/JCLI-D-14-00369.1, 2015.
Nitsche, F. O., Porter, D., Williams, G., Cougnon, E. A., Fraser, A. D.,
Correia, R., and Guerrero, R.: Bathymetric control of warm ocean water access
along the East Antarctic Margin, Geophys. Res. Lett., 44, 8936–8944,
https://doi.org/10.1002/2017GL074433, 2017.
NOAA: ETOPO5 5-minute gridded elevation data, available at:
http://www.ngdc.noaa.gov/mgg/global/etopo5.HTML (last access: 2 May 2012), 1988.
Noh, Y. and Kim, H. J.: Simulations of temperature and turbulence structure
of the oceanic boundary layer with the improved near-surface process, J.
Geophys. Res., 104, 15621, https://doi.org/10.1029/1999JC900068, 1999.
Núñez-Riboni, I. and Fahrbach, E.: Seasonal variability of the
Antarctic Coastal Current and its driving mechanisms in the Weddell Sea,
Deep Sea Res. Pt. I, 56, 1927–1941,
https://doi.org/10.1016/j.dsr.2009.06.005, 2009.
Ohshima, K. I.: Effect of landfast sea ice on coastal currents driven by the
wind, J. Geophys. Res.-Oceans, 105, 17133–17141,
https://doi.org/10.1029/2000jc900081, 2000.
Ohshima, K. I., Takizawa, T., Ushio, S., and Kawamura, T.: Seasonal
variations of the Antarctic coastal ocean in the vicinity of Lützow-Holm
Bay, J. Geophys. Res., 101, 20617, https://doi.org/10.1029/96JC01752, 1996.
Paolo, F. S., Fricker, H. A., and Padman, L.: Volume loss from Antarctic ice
shelves is accelerating, Science, 348, 327–331,
https://doi.org/10.1126/science.aaa0940, 2015.
Peña-Molino, B., McCartney, M. S., and Rintoul, S. R.: Direct
observations of the Antarctic Slope Current transport at 113°E,
J. Geophys. Res.-Oceans, 121, 7390–7407, https://doi.org/10.1002/2015JC011594,
2016.
Rignot, E.: Mass balance of East Antarctic glaciers and ice shelves from
satellite data, Ann. Glaciol., 34, 217–227, https://doi.org/10.3189/172756402781817419,
2002.
Rignot, E., Velicogna, I., Van Den Broeke, M. R., Monaghan, A., and Lenaerts,
J.: Acceleration of the contribution of the Greenland and Antarctic ice
sheets to sea level rise, Geophys. Res. Lett., 38, L05503,
https://doi.org/10.1029/2011GL046583, 2011.
Rignot, E., Jacobs, S., Mouginot, J., and Scheuchl, B.: Ice-shelf melting
around Antarctica, Science, 341, 266–270,
https://doi.org/10.1126/science.1235798, 2013.
Rignot, E., Mouginot, J., Scheuchl, B., Van Den Broeke, M., Van Wessem, M.
J., and Morlighem, M.: Four decades of Antarctic ice sheet mass balance from
1979–2017, P. Natl. Acad. Sci. USA, 116, 1095–1103,
https://doi.org/10.1073/pnas.1812883116, 2019.
Rintoul, S. R., Silvano, A., Pena-Molino, B., van Wijk, E., Rosenberg, M.,
Greenbaum, J. S., and Blankenship, D. D.: Ocean heat drives rapid basal melt
of the Totten Ice Shelf, Sci. Adv., 2, e1601610, https://doi.org/10.1126/sciadv.1601610, 2016.
Ryan, S., Schröder, M., Huhn, O., and Timmermann, R.: On the warm inflow
at the eastern boundary of the Weddell Gyre, Deep Sea Res. Pt. I, 107, 70–81, https://doi.org/10.1016/j.dsr.2015.11.002, 2016.
Schaffer, J. and Timmermann, R.: Greenland and Antarctic ice sheet topography, cavity geometry, and global bathymetry (RTopo-2), links to NetCDF files, PANGAEA, https://doi.org/10.1594/PANGAEA.856844, 2016.
Schaffer, J., Timmermann, R., Arndt, J. E., Kristensen, S. S., Mayer, C., Morlighem, M., and Steinhage, D.: A global, high-resolution data set of ice sheet topography, cavity geometry, and ocean bathymetry, Earth Syst. Sci. Data, 8, 543–557, https://doi.org/10.5194/essd-8-543-2016, 2016.
Silvano, A., Rintoul, S., and Herraiz-Borreguero, L.: Ocean-Ice Shelf
Interaction in East Antarctica, Oceanography, 29, 130–143, https://doi.org/10.5670/oceanog.2016.105,
2016.
Silvano, A., Rintoul, S. R., Peña-Molino, B., Hobbs, W. R., Van Wijk,
E., Aoki, S., Tamura, T., and Williams, G. D.: Freshening by glacial
meltwater enhances melting of ice shelves and reduces formation of Antarctic
Bottom Water, Sci. Adv., 4, eaap9467, https://doi.org/10.1126/sciadv.aap9467, 2018.
Silvano, A., Rintoul, S. R., Kusahara, K., Peña-Molino, B., van Wijk,
E., Gwyther, D. E., and Williams, G. D.: Seasonality of Warm Water Intrusions
Onto the Continental Shelf Near the Totten Glacier, J. Geophys. Res.-Oceans,
124, 4272–4289, https://doi.org/10.1029/2018JC014634, 2019.
Smedsrud, L. H., Jenkins, A., Holland, D. M., and Nøst, O. A.: Modeling
ocean processes below Fimbulisen, Antarctica, J. Geophys. Res.-Oceans,
111, C01107, https://doi.org/10.1029/2005JC002915, 2006.
Steele, M., Steele, M., Morley, R., Morley, R., Ermold, W., and Ermold, W.:
PHC: A global ocean hydrography with a high quality Arctic Ocean, J. Climate,
14, 2079–2087, https://doi.org/10.1175/1520-0442, 2001.
Tamura, T., Ohshima, K. I., and Nihashi, S.: Mapping of sea ice production
for Antarctic coastal polynyas, Geophys. Res. Lett., 35, L07606,
https://doi.org/10.1029/2007GL032903, 2008.
Tamura, T., Ohshima, K. I., Fraser, A. D., and Williams, G. D.: Sea ice
production variability in Antarctic coastal polynyas, J. Geophys. Res., 121,
2967–2979, https://doi.org/10.1002/2015JC011486, 2016.
Thompson, A. F., Stewart, A. L., Spence, P., and Heywood, K. J.: The
Antarctic Slope Current in a Changing Climate, Rev. Geophys., 56,
741–770, https://doi.org/10.1029/2018RG000624, 2018.
Timmermann, R., Le Brocq, A., Deen, T., Domack, E., Dutrieux, P., Galton-Fenzi, B., Hellmer, H., Humbert, A., Jansen, D., Jenkins, A., Lambrecht, A., Makinson, K., Niederjasper, F., Nitsche, F., Nøst, O. A., Smedsrud, L. H., and Smith, W. H. F.: A consistent data set of Antarctic ice sheet topography, cavity geometry, and global bathymetry, Earth Syst. Sci. Data, 2, 261–273, https://doi.org/10.5194/essd-2-261-2010, 2010a.
Timmermann, R., Le Brocq, A. M., Deen, T. J., Domack, E. W., Dutrieux, P., Galton-Fenzi, B., Hellmer, H. H., Humbert, A., Jansen, D., Jenkins, A., Lambrecht, A., Makinson, K., Niederjasper, F., Nitsche, F.-O., Nøst, O. A., Smedsrud, L., Smith, H. W.: Antarctic ice sheet topography, cavity geometry, and global bathymetry (RTopo 1.0.5-beta), PANGAEA, https://doi.org/10.1594/PANGAEA.741917, 2010b.
Turner, J., Bindschadler, R. A., Convey, P., Di Prisco, G., Fahrbach, E.,
Gutt, J., Hodgson, D. A., Mayewski, P. A., and Summerhayes, C. (Eds.): Antarctic
Climate Change and the Environment, Scientific Committee on Antarctic Research, Scott Polar Research Institute, Lensfield Road, Cambridge, UK, 2009.
Ushio, S.: Factors affecting fast-ice break-up frequency in Lützow-Holm
Bay, Antarctica, Ann. Glaciol., 44, 177–182,
https://doi.org/10.3189/172756406781811835, 2006.
Walker, D. P., Jenkins, A., Assmann, K. M., Shoosmith, D. R., and Brandon, M.
A.: Oceanographic observations at the shelf break of the Amundsen Sea,
Antarctica, J. Geophys. Res.-Oceans, 118, 2906–2918,
https://doi.org/10.1002/jgrc.20212, 2013.
Zhao, J., Cheng, B., Vihma, T., Heil, P., Hui, F., Shu, Q., Zhang, L., and
Yang, Q.: Fast Ice Prediction System (FIPS) for land-fast sea ice at Prydz
Bay, East Antarctica: an operational service for CHINARE, Ann. Glaciol., online first, https://doi.org/10.1017/aog.2020.46, 2020.
Short summary
We used an ocean–sea ice–ice shelf model with a 2–3 km horizontal resolution to investigate ocean–ice shelf/glacier interactions in Lützow-Holm Bay, East Antarctica. The numerical model reproduced the observed warm water intrusion along the deep trough in the bay. We examined in detail (1) water mass changes between the upper continental slope and shelf regions and (2) the fast-ice role in the ocean conditions and basal melting at the Shirase Glacier tongue.
We used an ocean–sea ice–ice shelf model with a 2–3 km horizontal resolution to investigate...
