Research Interests

  1. Formation process and ice thickness distribution of coastal polynyas
  2. Global Mapping of sea ice production and heat- and salt-flux
  3. Ice shelf and ocean interaction in East Antarctica

Refereed Papers

  1. Nakamura, K., S. Aoki, T. Yamanokuchi, T. Tamura, and Koichiro Doi (2022, in press): Validation for ice flow velocity varidations of Shirase Glacier derived from PALSAR-2 offset Tracking. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, doi:10.1109/JSTARS.2022.3165581.

  2. Hirano, D., Y. Fukamachi, K. I. Ohshima, M. Ito, T. Tamura, D. Simizu, T. Takatsuka, A. R. Mahoney, J. Jones, C. George, B. Adams, and H. Eicken (2022, in press): Oceanic conditions in the Barrow Coastal Polynya revealed by a 10-year mooring time series. Progress in Oceanography, doi:10.1016/j.pocean.2022.102781.

  3. Kokubun, N., Y. Tanabe, D. Hirano, V. Mensah, T. Tamura, S. Aoki, and A. Takahashi (2021): Shoreward intrusion of oceanic surface waters alters physical and biological ocean structures on the Antarctic continental shelf during winter: Observations from instrumented seals. Limnology and Oceanography, 66(10), 3740-3753, doi:10.1002/lno.11914.

  4. Hirano, D., K. Mizobata, H. Sasaki, H. Murase, T. Tamura, and S. Aoki (2021): Poleward eddy-induced warm water transport across a shelf break off Totten Ice Shelf, East Antarctica. Communications Earth and Environment, 2, 153, doi:10.1038/s43247-021-00217-4.

  5. Kiuchi, M., D. Nomura, D. Hirano, T. Tamura, G. Hashida, S. Ushio, and S. Aoki (2021): The effect of basal melting of the Shirase Glacier Tongue on the CO2 system in Lutzow-Holm Bay, East Antarctica. Journal of Geophysical Research, 126(5), doi:10.1029/2020JG005762.

  6. Kusahara, K., D. Hirano, M. Fujii, A. D. Fraser, and T. Tamura (2021) Modeling intensive ocean-cryosphere interactions in Lutzow-Holm Bay, East Antarctica, The Cryosphere, 15, 1697-1717, doi:10.5194/tc-15-1697-2021.

  7. Kashiwase, H., K. I. Ohshima, K. Nakata, and T. Tamura (2021): Improved SSM/I thin ice algorithm with ice type discrimination in coastal polynyas. Journal of Atmospheric and Oceanic Technology, 38(4), 823-835, doi:10.1175/JTECH-D-20-0145.1.

  8. Matsuoka, K., A. Skoglund, G. Roth, J. Pomereu, H. Griffiths, R. Headland, B. Herried, K. Katsumata, A. L. Brocq, K. Licht, F. Morgan, P. D. Neff, C. Ritz, M. Scheinert, T. Tamura, A. Putte, M. Broeke, A. Deschwanden, C. Deschamps-Berger, B. Liefferinge, S. Tronstad, and Y. Melvar (2021): Quantarctica, an integrated mapping environment for Antarctica, the Southern Ocean, and sub-Antarctic islands. Environmental Modeling and Software, 140, 105015, doi:10.1016/j.envsoft.2021.105015.

  9. Silvano, A., A. Foppert, S. Rintoul, P. Holland, T. Tamura, N. Kimura, P. Castagno, P. Falco, G. Budillon, F. A. Haumann, A. N. Garabato, and A. Macdonald (2020): Recent recovery of Antarctic Bottom Water formation in the Ross Sea driven by climate anomalies. Nature Geoscience, 13, 780-786, doi:10.1038/s41561-020-00655-3.

  10. Hirano, D., T. Tamura, K. Kusahara, K. I, Ohshima, K. W. Nicholls, S. Ushio, D. Simizu, K. Ono, M. Fujii, Y. Nogi, and S. Aoki (2020): Strong ice-ocean interaction beneath Shirase Glacier Tongue in East Antarctica. Nature Communications, 11:4221, doi:10.1038/s41467-020-17527-4.

  11. Aoki, S., K. Ono, D. Hirano, and T. Tamura (2020): Continuous winter oceanic profiling in the Cape Darnley Polynya, East Antarctica. Journal of Oceanography, 76(6), 365-372, doi:10.1007/s10872-020-00550-w.

  12. Fujimoto, S., A. C. Suzuki, M. Ito, T. Tamura, and M. Tsujimoto (2020): Marine tardigrades from Lutzow-Holm Bay, East Antarctica with the description of a new species. Polar Biology, 43(6), 679-693, doi:10.1007/s00300-020-02671-w.

  13. Labrousse, S., A. D. Fraser, M. Sumner, T. Tamura, D. Pinaud, B. Wienecke, R. Kirkwood, Y. Ropert-Coudert, R. Reisinger, I. Jonsen, R. Porter-Smith, C. Barbraud, C. Bost, R. Ji, and S. Jenouvrier (2019): Dynamic fine-scale sea-icescape shapes adult emperor penguin foraging habitat in East Antarctica. Geophysical Research Letters, 46, 11,206-11,218, doi:10.1029/2019GL084347.

  14. Fraser, A. D., K. I. Ohshima, S. Nihashi,R. A. Massom, T. Tamura, K. Nakata, G. D. Williams, S. Carpentier, and S. Willmes (2019): Landfast ice controls on sea-ice production in the Cape Darnley Polynya: A case study, Remote Sensing of Environment, 233, 111315, doi:10.1016/j.rse.2019.111315.

  15. Kashiwase, H., K. I. Ohshima, Y. Fukamachi, S. Nihashi, and T. Tamura (2019): Evaluation of AMSR-E thin ice thickness algorithm from a mooring-based observation - How can the satellite observe a sea ice field with non-uniform thickness distribution?, Journal of Atmospheric and Oceanic Technology, 36(8), 1623-1641, doi:10.1175/JTECH-D-18-0218.1.

  16. Guo, G., J. Shi, L. Gao, T. Tamura, and G. D. Williams (2019): Reduced sea ice production due to upwelled oceanic heat flux in Prydz Bay, East Antarctica. Geophysical Research Letters, 46, 4782-4789, doi:10.1029/2018GL081463.

  17. Gerland, S., D. Barber, W. Meier, C. J. Mundy, M. Holland, S. Kern, Z. Li, C. Michel, D. K. Perovich, and T. Tamura (2019): Essential gaps and uncertainties in the understanding of the roles and functions of Arctic sea ice. Environmental Research Letters, 14(4), 043002, doi:10.1088/1748-9326/ab09b3.

  18. Hirano, D., Y. Fukamachi, K. I. Ohshima, E. Watanabe, A. R. Mahoney, H. Eicken, M. Itoh, D. Simizu, K. Iwamoto, J. Jones, T. Takatsuka, T. Kikuchi, and T. Tamura (2018): Winter water formation in coastal polynyas of the eastern Chukchi Shelf: Pacific and Atlantic influences. Journal of Geophysical Research, 123(8), 5688-5705, doi:10.1029/2017JC013307.

  19. Silvano, A., S. R. Rintoul, B. Pena-Molino, W. R. Hobbs, E. van Wijk, S. Aoki, T. Tamura, G. D. Williams (2018): Freshening by glacial meltwater enhances melting of ice shelves and reduces formation of Antarctic Bottom Water. Science Advances, 4(4), eaap9467, doi:10.1126/sciadv.aap9467.

  20. Labrousse, S., G. Williams, T. Tamura, S. Bestley, J-B. Sallee, A. Fraser, M. Sumner, F. Roquet, K. Heerah, B. Picard, C. Guinet, R. Harcourt, C. McMahon, M. Hindell, and J-B. Charrassin (2018): Coastal polynyas: Winter oases for subadult southern elephant seals in East Antarctica. Scientific Reports, 8:3183, doi:10.1038/s41598-018-21388-9.

  21. Takahashi, A., M. Ito, K. Nagai, J-B. Thiebot, H. Mitamura, T. Noda, P. N. Trathan, T. Tamura, Y. Y. Watanabe (2018): Migratory movements and winter diving activity of Adelie penguins in East Antarctica. Marine Ecology Progress Series, 589, 227-239, doi:10.3354/meps12438.

  22. Aoki, S., R. Kobayashi, S. R. Rintoul, T. Tamura, and K. Kusahara (2017): Changes in water properties and flow regime on the continental shelf off the Adelie/George V Land coast, East Antarctica, after glacier tongue calving. Journal of Geophysical Research, 122(8), 6277-6294, doi:10.1002/2017JC012925.

  23. Kusahara, K., G. D. Williams, T. Tamura, R. Massom, and H. Hasumi (2017): Dense Shelf Water spreading from Antarctic coastal polynyas to the deep Southern Ocean: A regional circumpolar model study. Journal of Geophysical Research, 122(8), 6238-6253, doi:10.1002/2017JC012911.

  24. Nihashi, S., K. I. Ohshima, and T. Tamura (2017): Sea-ice production in Antarctic coastal polynyas estimated from AMSR2 data and its validation using AMSR-E and SSM/I-SSMIS data. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 10(3), 3912-3922, 10.1109/JSTARS.2017.2731995.

  25. Makabe, R., A. Tanimura, T. Tamura, D. Hirano, K. Shimada, F. Hashihama, and M. Fukuchi (2017): Meso-zooplankton abundance and spatial distribution off Lutzow-Holm Bay during austral summer 2007-2008. Polar Science, 12, 25-33, doi:10.1016/j.polar.2016.09.002.

  26. Kusahara, K, H. Hasumi, A. D. Fraser, S. Aoki, K. Shimada, G. D. Williams, R. A. Massom, and T. Tamura (2017): Modeling ocean-cryosphere interactions off Adelie and George V Land, East Antarctica. Journal of Climate, 30, 163-188, doi:10.1175/JCLI-D-15-0808.1.

  27. Williams, G. D., L. Herraiz-Borreguero, F. Roquet, T. Tamura, K. I. Ohshima, Y. Fukamachi, A. D. Fraser, L. Gao, H. Chen, C. R. McMahon, R. Harcourt, and M. Hindell (2016): Suppression of Antarctic Bottom Water production by melting ice shelves in Prydz Bay, East Antarctica. Nature Communications, 7:12577, doi:10.1038/NCOMMS12577.

  28. Tamura, T., K. I. Ohshima, A. D. Fraser, and G. D. Williams (2016): Sea ice production variability in Antarctic coastal polynyas. Journal of Geophysical Research, 121(5), 2967-2979, doi:10.1002/2015JC011537.

  29. Toyota, T., R. Massom, O. Lecomte, D. Nomura, P. Heil, T. Tamura, and A. D. Fraser (2016): On the extraordinary snow on the sea ice off East Antarctica in late winter, 2012. Deep-Sea Research Part II, 131, 53-67, doi:10.1016/j.dsr2.2016.02.003.

  30. Hirano, D., Y. Fukamachi, E. Watanabe, K. I. Ohshima, K. Iwamoto, A. Mahoney, H. Eicken, D. Shimizu, and T. Tamura (2016): A wind-driven, hybrid latent and sensible heat coastal polynya off Barrow, Alaska. Journal of Geophysical Research, 121(1), 980-997, doi:10.1002/2015JC011318.

  31. Sugimoto, F., T. Tamura, H. Shimoda, S. Uto, D. Simizu, K. Tateyama, S. Hoshino, T. Ozeki, Y. Fukamachi, S. Ushio, K. I. Ohshima (2016): Interannual variability of sea-ice thickness in the pack-ice zone off Lutzow-Holm Bay, East Antarctica. Polar Science, 10(1), 43-51, doi:10.1016/j.polar.2015.10.003.

  32. Nakata, K., K. I. Ohshima, S. Nihashi, N. Kimura, and T. Tamura (2015): Variability and ice production budget in the Ross Ice Shelf Polynya based on a simplified polynya model and satellite observations. Journal of Geophysical Research, 120(9), 6234-6252, doi:10.1002/2015JC010894.

  33. Tamura, T., K. I. Ohshima, J. L. Lieser, T. Toyota, K. Tateyama, D. Nomura, K. Nakata, A. D. Fraser, P. W. Jansen, K. B. Newbery, R. A. Massom, and S. Ushio (2015): Helicopter-borne observations with portable microwave radiometer in the Southern Ocean and the Sea of Okhotsk. Annals of Glaciology, 56(69), 436-444, doi:10.3189/2015AoG69A621.

  34. Iwamoto, K., K. I. Ohshima, and T. Tamura (2014): Improved mapping of sea ice production in the Arctic Ocean using AMSR-E thin ice thickness algorithm. Journal of Geophysical Research, 119(6), 3574-3594, doi:10.1002/2013JC009749.

  35. Kitade, Y., K. Shimada, T. Tamura, G. D. Williams, S. Aoki, Y. Fukamachi, F. Roquet, M. Hindell, S. Ushio, and K. I. Ohshima (2014): Antarctic Bottom Water production from the Vincennes Bay Polynya, East Antarctica. Geophysical Research Letters, 41(10), 3528-3534, doi:10.1002/2014GL059971.

  36. Aoki, S., Y. Kitade, K. Shimada, K. I. Ohshima, T. Tamura, C. C. Bajish, M. Moteki, and S. R. Rintoul (2013): Widespread freshening in the seasonal ice zone near 140E off the Adelie Land Coast, Antarctica, from 1994 to 2012. Journal of Geophysical Research, 118(11), 6046-6063, doi:10.1002/2013JC009009.

  37. Shadwick, E. H., S. R. Rintoul, B. Tilbrook, G. D. Williams, N. Young, H. Marchant, J. Smith, A. D. Fraser, and T. Tamura (2013): Glacier tongue calving reduced dense water formation and enhanced carbon uptake. Geophysical Research Letters, 40(5), 904-909, doi:10.1002/grl.50178.

  38. Ohshima, K. I., Y. Fukamachi, G. D. Williams, S. Nihashi, F. Roquet, Y. Kitade, T. Tamura, D. Hirano, L. Herraiz-Borreguero, I. Field, M. Hindell, S. Aoki, and M. Wakatsuchi (2013): Antarctic Bottom Water production by intense sea-ice formation in the Cape Darnley Polynya. Nature Geoscience, 6(3), 235-240, doi:10.1038/ngeo1738.

  39. Iwamoto, K., K. I. Ohshima, T. Tamura, and S. Nihashi (2013): Estimation of thin ice thickness from AMSR-E data in the Chukchi Sea. International Journal of Remote Sensing, 34(2), 468-489, doi:10.1080/01431161.2012.712229.

  40. Tamura, T., G. D. Williams, A. D. Fraser, and K. I. Ohshima (2012): Potential regime shift in decreased sea ice production after the Mertz Glacier calving. Nature Communications, 3:826, doi:10.1038/ncomms1820. (Best Paper Collection)

  41. Tamura, T., and K. I. Ohshima (2011): Mapping of sea ice production in the Arctic coastal polynyas. Journal of Geophysical Research, 116, C07030, doi:10.1029/2010JC006586. (AGU Research Spotlight)

  42. Kawaguchi, Y., T. Tamura, S. Nishino, T. Kikuchi, M. Itoh, and H. Mitsudera (2011): Numerical study of winter water formation in the Chukchi Sea: Roles and impacts of coastal polynyas. Journal of Geophysical Research, 116, C07025, doi:10.1029/2010JC006606.

  43. Williams, G. D., A. J. S. Meiners, A. Poole, P. Mathiot, T. Tamura, and A. Klocker (2011): Late winter oceanography off the Sabrina and BANZARE coast (117-128E), East Antarctica. Deep-Sea Research Part II, 58, 1194-1210, doi:10.1016/j.dsr2.2010.10.035.

  44. Toyota, T., C. Haas, and T. Tamura (2011): Size distribution and shape properties of relatively small sea ice floes in the Antarctic marginal ice zone in late winter. Deep-Sea Research Part II, 58, 1182-1193, doi:10.1016/j.dsr2.2010.10.034.

  45. Toyota, T., R. Massom, K. Tateyama, T. Tamura, and A. Fraser (2011): Properties of snow overlying the sea ice off East Antarctica in late winter, 2007. Deep-Sea Research Part II, 58, 1137-1148, doi:10.1016/j.dsr2.2010.12.002.

  46. Williams, G. D., M. Hindell, M.-N. Houssais, T. Tamura, and I. C. Field (2011): Upper ocean stratification and sea ice growth rates during the summer-fall transition, as revealed by Elephant seal foraging in the Adelie Depression, East Antarctica. Ocean Science, 7, 185-202, doi:10.5194/os-7-185-2011.

  47. Tamura, T., K. I. Ohshima, S. Nihashi, and H. Hasumi (2011): Estimation of surface heat/salt fluxes associated with sea ice growth/melt in the Southern Ocean. Scientific Online Letter on the Atmosphere, 7, 17-20, doi:10.2151/sola.2011-005.

  48. Kusahara, K., H. Hasumi, and T. Tamura (2010): Modeling sea ice production and dense shelf water formation in coastal polynyas around East Antarctica. Journal of Geophysical Research, 115, C10006, doi:10.1029/2010JC006133.

  49. Williams, G. D., S. Aoki, S. S. Jacobs, S. R. Rintoul, T. Tamura, and N. Bindoff (2010): Antarctic Bottom Water from the Adelie and George V Land coast, East Antarctica (140-149E). Journal of Geophysical Research, 115, C04027, doi:10.1029/2009JC005812.

  50. Nihashi, S., K. I. Ohshima, T. Tamura, Y. Fukamachi, and S. Saitoh (2009): Thickness and production of sea ice in the Okhotsk Sea coastal polynyas from AMSR-E. Journal of Geophysical Research, 114, C10025, doi:10.1029/2008JC005222.

  51. Tamura, T., K. I. Ohshima, and S. Nihashi (2008): Mapping of sea ice production for Antarctic coastal polynyas. Geophysical Research Letters, 35, L07606, doi:10.1029/2007GL032903.

  52. Tamura, T., K. I. Ohshima, T. Markus, D. J. Cavalieri, S. Nihashi, and N. Hirasawa (2007): Estimation of thin ice thickness and detection of fast ice from SSM/I data in the Antarctic Ocean. Journal of Atmospheric and Oceanic Technology, 24(10), 1757-1772, doi:10.1175/JTECH2113.1.

  53. Tamura, T., K. I. Ohshima, H. Enomoto, K. Tateyama, A. Muto, S. Ushio, and R. A. Massom (2006): Estimation of thin sea-ice thickness from NOAA AVHRR data in a polynya off the Wilkes Land coast, East Antarctica. Annals of Glaciology, 44, 269-274, doi:10.3189/172756406781811745.

  54. Massom, R. A., A. Worby, V. Lytle, T. Markus, I. Allison, T. Scambos, H. Enomoto, K. Tateyama, T. Haran, J. C. Comiso, A. Pfaffling, T. Tamura, A. Muto, P. Kanagaratnam, B. Giles, N. Young, G. Hyland, and E. Key (2006): ARISE (Antarctic Remote Ice Sensing Experiment) in the East 2003: validation of satellite-derived sea-ice data products. Annals of Glaciology, 44, 288-296, doi:10.3189/172756406781811268.

Presentations at International Conferences

Takahashi, K. D., M. Ito, N. Nojiro, D. Nomura, P. Wongpan, M. Sano, R. Makabe, M. Yamamoto-Kawai, T. Tamura, S. Aoki, M. Moteki: Incorporation of phytoplankton into newly-formed sea ice in Dalton Polynya and off Totten Glacier (Southern Ocean) during late summer, 10th SCAR Open Science Conference, Online, August 1-10 (??), 2022. (Poster)

Istomina, L., G. Heygster, H. Enomoto, S. Ushio, T. Tamura, and C. Haas: Remote sensing observations of melt ponds on top of Antarctic sea ice using Sentinel-3 data, IEEE International Geoscience and Remote Sensing Symposium 2022, Kuala Lumpur, Malaysia (Hybrid), July 17-22 (??), 2022.

Rodriguez, E. P., S. R. Rintoul, L. Herraiz-Borreguero, F. Roquet, T. Tamura, E. Wijk, S. Bestley, C. McMahon, and M. Hindell: Drivers of Dense Shelf water formation in East Antarctic polynyas, EGU General Assembly 2022, Vienna, Austria and Online, May 23-27 (23), 2022.

Ohshima, K. I., Y. Fukamachi, M. Ito, K. Nakata, D. Simizu, K. Ono, D. Nomura, G. Hashida, and T. Tamura: Dominating frazil-ice production in a coastal polynya leads to Antarctic Bottom Water formation, AGU Ocean Sciences Meeting 2022, Online, February 24-March 4 (March 1), 2022.

Hyogo, H., Y. Nakayama, M. Fujii, T. Tamura, and S. Aoki: Regional East Antarctica simulation with optimized ocean, sea ice, and thermodynamic ice shelf model parameters, AGU Ocean Sciences Meeting 2022, Online, February 24-March 4 (March 1), 2022.

Greenbaum, J. S., D. W. Brown, D. D. Blankenship, L. M. Jong, E. L. Meur, J. L. Roberts, T. Tamura, S. Aoki, B. K. Galton-Fenzi, W. S. Lee, Y. Nakayama, S. Bo, S. T. Yoon, and C. Haas: Airborne-deployed ocean sensors for constraining the bathymetry and ocean state on the Antarctic continental shelf, AGU Fall Meeting, New Orleans and Online, December 13-17, 2021.

Istomina, L., G. Heygster, H. Enomoto, S. Ushio, T. Tamura, and C. Haas: Retrieval of Antarctic sea ice surface melt using Sentinel-3 satellite data, AGU Fall Meeting, New Orleans and Online, December 13-17, 2021.

Nakamura, K., S. Aoki, T. Yamanokuchi, T. Tamura, and K. Doi: Validation for Ice Flow Velocity of Shirase Glacier Derived from PALSAR-2 Image Correlation, IEEE International Geoscience and Remote Sensing Symposium 2021, Brussels, Belgium, July 11-16 (14), 2021.

Silvano, A., A. Foppert, S. R. Rintoul, P. Holland, T. Tamura, N. Kimura, P. Castagno, P. Falco, G. Budillon, A.Haumann, A. N. Garabato, and A. M. Macdonald: Recent recovery of Antarctic Bottom Water formation in the Ross Sea driven by climate anomalies, EGU General Assembly 2021, Online, April 19-30 (28), 2021.

Silvano, A., A. Foppert, S. R. Rintoul, P. Holland, T. Tamura, N. Kimura, P. Castagno, P. Falco, G. Budillon, A.Haumann, A. N. Garabato, and A. M. Macdonald: Impact of Antarctic Ice Sheet Melting on the Abyssal Southern Ocean, AGU Fall Meeting, Online, December 1-17 (17), 2020.

Labrousse, S., A. D. Fraser, M. Sumner, T. Tamura, D. Pinaud, B. Wienecke, R. Kirkwood, Y. Ropert-Coudert, R. Reisinger, I. Jonsen, R. Porter-Smith, C. Barbraud, C. Bost, R. Ji, and S. Jenouvrier: Dynamic fine-scale sea-icescape shapes adult emperor penguin foraging habitat in East Antarctica, AGU Ocean Sciences Meeting 2020, San Diego, USA, February 16-21 (20), 2020.

Silvano, A., A. Foppert, S. R. Rintoul, P. Holland, P. Castagno, A. N. Garabato, A. Haumann, N. Kimura, T. Tamura, and A. M. Macdonald: Temporal variability of Antarctic Bottom Water formation and its drivers, AGU Ocean Sciences Meeting 2020, San Diego, USA, February 16-21 (18), 2020 (Poster).

Kusahara, K., D. Hirano, M. Fujii, A. Fraser, and T. Tamura: Modeling strong basal melting at the Shirase Glacier Tongue, East Antarctica, AGU Fall Meeting, San Francisco, USA, December 9-12 (10), 2019. (Poster)

Labrousse, S., G. Williams, T. Tamura, S. Bestley, J-B. Sallee, A. D. Fraser, M. Sumner, F. Roquet, K. Heerah, B. Picard, C. Guinet, R. Harcourt, C. McMahon, M. Hindell, and J-B. Charrassin: Winter oases for subadult southern elephant seals in East Antarctica, World Marine Mammal Science Conference 2019, Barcelona, Spain, December 9-12 (10), 2019. (Poster)

Fraser, A. D., R. A. Massom, K. I. Ohshima, S. Willmes, P. Kappes, J. Cartwright, K. Kusahara, T. Tamura, and R. Smith: Antarctic landfast sea ice distribution and variability, and its influence on coastal polynyas, IGS International Symposium on Sea Ice at the Interface, Winnipeg, Canada, August 18-23 (22), 2019.

Nakamura, K., S. Aoki, T. Yamanokuchi, T. Tamura, S. Ushio, and K. Doi: Fluctuations of the ice flow velocity of Shirase glacier and its surrounding landfast ice displacement in east Antarctica derived from ALOS-2/PALSAR-2 image correlation, IEEE International Geoscience and Remote Sensing Symposium 2019, Yokohama, Japan, July 28- August 2 (August 2), 2019. (Poster)

Hirano, D., T. Tamura, K. Kusahara, K. I. Ohshima, S. Ushio, D. Simizu, K. Ono, and S. Aoki: Strong ice-ocean interaction at Shirase glacier tongue, East Antarctica, IUGG 2019, Montreal, Canada, July 8-18 (13), 2019.

Nomura, D., A. Ooki, E. Damm, G. S. Dieckmann, B. Delille, M. Frey, M. A. Granskog, K. M. Meiners, A. Silyakova, T. Tamura, J-L. Tison, T. Toyota, Y. Yamashita: Production of bromoform in sea ice surface and emission to the atmosphere, 2018 joint 14th iCACGP Quadrennial Symposium/15th IGAC Science Conference, Takamatsu, Japan, September 25-29 (28), 2018. (Poster)

Minowa, M., S. Sugiyama, M. Ito, S. Yamane, S. Aoki, and T. Tamura: Water Properties and Circulation Underneath a Floating Tongue of Langhovde Glacier, East Antarctica, 32nd Forum for Research into Ice Shelf Processess workshop 2018, Aussois, France, September 3-6 (6), 2018.

Matsuoka, K., G. Roth, A. Skoglund, S. Tronstad, Y. Melvar, M. van den Broeke, H. Griffiths, R. Headland, B. Herried, K. Katsumata, A. L. Brocq, K. Licht, F. Morgan, P. Neff, J. de Pomereu, A. van de Putte, C. Ritz, M. Scheinert, T. Tamura: Quantarctica Version 3: A Cross-Platform, Full-Featured Open GIS for Antarctic Research, POLAR 2018 SCAR/IASC Open Science Conference, Davos, Switzerland, June 15-26 (23), 2018.

Hirano, D., T. Tamura, S. Ushio, K. I. Ohshima, D. Simizu, K. Ono, T. Noguchi, S. Aoki: Observations of ice tongue-ocean interaction at Shirase Glacier, POLAR 2018 SCAR/IASC Open Science Conference, Davos, Switzerland, June 15-26 (20), 2018. (Poster)

Nihashi, S., K. I. Ohshima, and T. Tamura: Sea-ice production in Antarctic coastal polynyas estimated using AMSR-E and AMSR2 data, AOGS 15th Annual Meeting 2018, Hawaii, USA, June 3-8 (5), 2018.

Nomura, D., A. Ooki, E. Damm, G. S. Dieckmann, B. Delille, M. Frey, M. A. Granskog, K. M. Meiners, A. Silyakova, T. Tamura, J-L. Tison, T. Toyota, Y. Yamashita: Production of bromoform in sea ice surface and emission to the atmosphere, EGU General Assembly 2018 , Vienna, Austria, April 8-13 (13), 2018.

Nihashi, S., K. I. Ohshima, and T. Tamura: Sea-ice production in Antarctic coastal polynyas estimated from AMSR2 data and its comparison with AMSR-E and SSM/I-SSMIS data, IGS International Symposium on Polar Ice, Polar Climate, Polar Change, Boulder, USA, August 14-19 (17), 2017.

Fraser, A., K. Ohshima, S. Nihashi, T. Tamura, K. Nakata, G. Williams, R. Massom, S. Carpentier, S. Willmes: The Cape Darnley polynya: a case study in landfast sea-ice-coastal polynya interaction, IGS International Symposium on Polar Ice, Polar Climate, Polar Change, Boulder, USA, August 14-19 (17), 2017. (Poster)

Nakamura, K., T. Tamura, S. Ushio, S. Aoki, T. Yamanokuchi, and K. Doi: Estimation of interaction between displacement of fast ice in Lutzow-Holm Bay occurred with breaking away event in 2015 and ice flow velocity of Shirase Glacier using SAR image correlation, IGS International Symposium on Polar Ice, Polar Climate, Polar Change, Boulder, USA, August 14-19 (15), 2017. (Poster)

Aoki, S., and T. Tamura: Research of Ocean-ice BOundary InTeraction and Change around Antarctica (ROBOTICA): a strategy to explore ice-ocean interactions in East Antarctica, AOGS 14th Annual Meeting 2017, Singapore, Singapore, August 6-11 (August 11), 2017.

Williams, G., L. Herraiz-Borreguero, F. Roquet, T. Tamura, K. Ohshima, A. Fraser, L. Gao, C. Mcmahon, R. Harcourt, and M. Hindell: The Suppression of Antarctic Bottom Water Formation By Melting Ice Shelves In Prydz Bay, AOGS 14th Annual Meeting 2017, Singapore, Singapore, August 6-11 (August 10), 2017. (Poster)

Ohshima, K. I., S. Nihashi, K. Iwamoto, N. Tamaru, K. Nakata, and T. Tamura: Global mapping of sea ice production from the satellite microwaves, AGU Fall Meeting, San Francisco, USA, December 12-16 (13), 2016. (Poster)

Ohshima, K. I., Y. Nakayama, Y. Fukamachi, Y. Matsumura, S. Nihashi, T. Tamura, Y. Kitade, D. Hirano, D. Shimizu, and S. Aoki: Formation and Variability of Antarctic Bottom Water off Cape Darnley: the Fourth Antarctic Bottom Water, AGU Ocean Sciences Meeting, New Orleans, USA, February 21-26 (25), 2016.

Nomura, D., B. Delille, G. S. Dieckmann, M. A. Granskog, J. Tison, K. M. Meiners, K. I. Ohshima, and T. Tamura: Mid-winter surveys for sea ice biogeochemistry in bi-polar oceans, Goldschmidt 2015, Prague, Czuch, August 16-21 (21), 2015.

Ohshima, K. I., Y. Fukamachi, G. D. Williams, S. Nihashi, T. Tamura, Y. Kitade, D. Hirano, S. Aoki, and M. Wakatsuchi: The fourth Antarctic Bottom Water: Cape Darnley Bottom Water, IUGG 2015, Prague, Czuch, June 22-July 2 (July 1), 2015.

Tamura, T., K. I. Ohshima, G. D. Williams, and A. D. Fraser: Sea ice production variability in the Antarctic coastal polynyas, IUGG 2015, Prague, Czuch, June 22-July 2 (June 27), 2015.

Hirano, D., Y. Fukamachi, E. Watanabe, K. Iwamoto, A. Mahoney, H. Eicken, D. Shimizu, K. I. Ohshima, and T. Tamura: A wind-driven, hybrid latent and sensible heat coastal polynya at Barrow, Alaska, IUGG 2015, Prague, Czuch, June 22-July 2 (June 27), 2015.

Fraser, A. D., K. I. Ohshima, S. Nihashi, R. A. Massom, and T. Tamura: Landfast sea ice: the missing factor explaining Antarctic coastal polynya sea ice production, IUGG 2015, Prague, Czuch, June 22-July 2 (June 26), 2015.

Hirano, D., Y. Fukamachi, E. Watanabe, K. Iwamoto, A. Mahoney, H. Eicken, D. Shimizu, K. I. Ohshima, and T. Tamura: A Wind-Driven, Hybrid Latent and Sensible Heat Coastal Polynya at Barrow, Alaska, AGU Fall Meeting, San Francisco, USA, December 15-19 (15), 2014. (Poster)

Nomura, D., B. Delille, A. Ooki, G. S. Dieckmann, J. Tison, K. M. Meiners, M. A. Granskog, and T. Tamura: CO2 and Bromoform emissions over Antarctic sea-ice, International Workshop on Chemical Atmosphere-Snow-Sea Ice Interactions, Cambridge, UK, October 13-15 (13), 2014.

Ohshima, K. I., Y. Fukamachi, G. D. Williams, S. Nihashi, T. Tamura, Y. Kitade, D. Hirano, S. Aoki, and M. Wakatsuchi: Antarctic Bottom Water Production from Intense Sea-Ice Formation in the Cape Darnley Polynya, AOGS 11th Annual Meeting 2014, Sapporo, Japan, July 28-August 1 (August 1), 2014.

Tamura, T., K. I. Ohshima, J. L. Lieser, T. Toyota, K. Tateyama, D. Nomura, K. Nakata, A. D. Fraser, P. Jansen, K. Newbery, R. A. Massom, and S. Ushio: Helicopter-borne observation with portable microwave radiometer in the Southern Ocean and the Sea of Okhotsk, IGS International Symposium on Sea Ice in a Changing Environment, Hobart, Australia, March 10-14 (13), 2014. (Poster)

Nomura, D., A. Ooki, G. S. Dieckmann, E. Damm, K. M. Meiners, and T. Tamura: Bromoform emission over the Antarctic sea ice, IGS International Symposium on Sea Ice in a Changing Environment, Hobart, Australia, March 10-14 (13), 2014. (Poster)

Nakata, K., K. I. Ohshima, S. Nihashi, N. Kimura, and T. Tamura: Variability mechanism and ice production budget of the Ross Iceshelf Polynya in the Antarctica, IGS International Symposium on Sea Ice in a Changing Environment, Hobart, Australia, March 10-14 (13), 2014.

Sugimoto, F., H. Shimoda, D. Simizu, S. Uto, K. Tateyama, S. Hoshino, T. Ozeki, T. Tamura, Y. Fukamachi, S. Ushio, and K. I. Ohshima: Distribution and interannual variability of sea-ice thickness in the pack-ice zone off Lutzow-Holm Bay, Antarctica, IGS International Symposium on Sea Ice in a Changing Environment, Hobart, Australia, March 10-14 (10), 2014. (Poster)

Nomura, D., B. Delille, G. S. Dieckmann, J. Tison, K. M. Meiners, M. A. Granskog, and T. Tamura: Sea ice CO2 flux in the Southern Ocean during mid-winter and early spring, IGS International Symposium on Sea Ice in a Changing Environment, Hobart, Australia, March 10-14 (10), 2014.

Young, N. W., A. D. Fraser, J. Lieser, R. Massom, S. Rintoul, T. Tamura, and G. D. Williams: The changing icescape about the Mertz Glacier polynya, East Antarctica, and its impacts, The 2013 European Space Agency Living Planet Symposium, Edinburgh, UK, September 9-13 (12), 2013. (Poster)

Kitade, Y., K. Shimada, T. Tamura, L. Cheng, Y. Fukamachi, S. Aoki, S. Ushio, K. I. Ohshima: Properties of Antarctic Bottom Water observed off Vincennes Bay, AGU Fall Meeting, San Francisco, USA, December 3-7 (7), 2012. (Poster)

Graham, J. A., K. J. Heywood, C. P. Chavanne, and T. Tamura: Seasonal cycle of temperature and salinity across the Antarctic continental shelf and slope in the southeastern Weddell Sea, AGU Ocean Sciences Meeting, Salt Lake City, USA, February 20-24 (21), 2012. (Poster)

Fukamachi, Y., K. I. Ohshima, D. Simizu, T. Tamura, Y. Kitade, S. Aoki, S. Ushio, G. Hashida, and M. Wakatsuchi: Mooring measurement of Antarctic Bottom Water export from the Cape Darnley Polynya and sea-ice thickness within this polynya, WCRP Open Science Conference -Climate Research in Service to Society-, Denver, USA, October 24-28 (27), 2011. (Poster)

Tamura, T., K. I. Ohshima, S. Nihashi, and H. Hasumi: Estimation of surface heat/salt fluxes associated with sea ice growth/melt in the Southern Ocean, IUGG 2011, Melbourne, Australia, June 28-July 7 (July 3), 2011.

Williams, G., T. Tamura, K. Kusahara, B. Galton-Fenzi, and B. Legresy: Long-term freshening of Adelie Depresssion Dense Shelf Water, IUGG 2011, Melbourne, Australia, June 28-July 7 (July 2), 2011. (Poster)

Kawaguchi, Y., T. Tamura, S. Nishino, T. Kikuchi, M. Itoh, and H. Mitsudera: Numerical study of winter water formation in the Chukchi Sea in the Arctic Ocean, IUGG 2011, Melbourne, Australia, June 28-July 7 (July 2), 2011.

Ohshima, K. I., Y. Fukamachi, Y. Nakayama, T. Tamura, S. Nihashi, Y. Kitade, Y. Matsumura, H. Hasumi, S. Aoki, and M. Wakatsuchi: Formation of Antarctic Bottom Water off Cape Darnley with huge sea ice production, IUGG 2011, Melbourne, Australia, June 28-July 7 (July 2), 2011.

Tamura, T., and K. I. Ohshima: Mapping of sea ice production in the Arctic coastal polynyas, IUGG 2011, Melbourne, Australia, June 28-July 7 (July 1), 2011.

Kawaguchi, Y., T. Tamura, T. Kikuchi, and M. Itoh: Numerical study of Pacific Winter Water formation in Chukchi Sea using SSM/I thin-ice algorithm: Roles of Alaskan coastal polynya, International Polar Year Oslo Science Conference, Oslo, Norway, June 8-12 (10), 2010. (Poster)

Fukamachi, Y., K. I. Ohshima, S. Aoki, Y. Kitade, T. Tamura, and M. Wakatsuchi: Antarctic Bottom Water revealed by mooring measurements off Cape Darnley, Antarctica, International Polar Year Oslo Science Conference, Oslo, Norway, June 8-12 (9), 2010.

Toyota, T., C. Haas, and T. Tamura: Floe-size distribution of relatively small sea ice in the Antarctic marginal ice zone in late winter, IGS International Symposium on Sea Ice in the Physical and Biogeochemical System, Tromso, Norway, May 31-June 4 (June 3), 2010. (Poster)

Tamura, T., K. I. Ohshima, and S. Nihashi: Global mapping of sea ice production and surface heat/salt-flux in the sea ice region, IGS International Symposium on Sea Ice in the Physical and Biogeochemical System, Tromso, Norway, May 31-June 4 (June 2), 2010.

Tamura, T., K. I. Ohshima, T. Toyota, K. Tateyama, R. A. Massom, and A. P. Worby: Heli-borne observation of sea ice with AMSR-E sensor in the Southern Ocean and the Sea of Okhotsk, IGS International Symposium on Sea Ice in the Physical and Biogeochemical System, Tromso, Norway, May 31-June 4 (June 1), 2010. (Poster)

Ohshima, K. I., T. Tamura, S. Nihashi, K. Iwamoto, D. Simizu, and Y. Fukamachi: Global mapping of sea ice production and heat/salt flux in ice-covered regions, using satellite passive microwave data, Workshop: Surface Fluxes: Challenges for High Latitudes, Boulder, USA, March 17-19 (18), 2010.

Tamura, T., K. I. Ohshima, and S. Nihashi: Mapping of sea ice production and surface heat/salt-flux in the polar Oceans, IAMASEIAPSOEIACS JOINT ASSEMBRY MOCA-09, Montreal, Canada, July 19-29 (21), 2009.

Ohshima, K. I., T. Tamura, Y. Fukamachi, and S. Aoki: Sea ice production in the polynya and the associated bottom water formation off the Cape Darnley, East Antarctica, 9th International Conference on Southern Hemisphere Meteorology and Oceanography, Melbourne, Australia, February 9-13 (10), 2009.

Tamura, T., K. I. Ohshima, and S. Nihashi: Mapping of thin sea ice and ice production in the Southern Ocean and Okhotsk Sea, IUGG XXIV 2007, Perugia, Italy, July 2-13 (9), 2007.

Tateyama, K., H. Enomoto, K. Shirasawa, T. Tamura, A. Muto, S. Uto, S. Ushio, I. Allison, A. Worby, R. Massom, and V. Lytle: Development of 1-D multi-layer model for deformed sea ice thickness in the Antarctic sea using the electromagnetic induction device, International Workshop on Antarctic Sea Ice Thickness, Hobart, Australia, July 5-7 (7), 2006.

Tamura, T., K. I. Ohshima, T. Markus, D. J. Cavalieri, S. Nihashi, and N. Hirasawa: Estimation of thin ice thickness and detection of fast ice from SSM/I data in the Antarctic Ocean, International Workshop on Antarctic Sea Ice Thickness, Hobart, Australia, July 5-7 (6), 2006.

Tamura, T., K. I. Ohshima, and S. Nihashi: Estimation of sea ice production from passive microwave data in Antarctic coastal polynyas, IGS International Symposium on Sea Ice, Dunedin, New Zealand, December 5-9 (9), 2005.

Ohshima, K. I., T. Tamura, and S. Nihashi: Sea ice production in the Okhotsk coastal polynya and its relation to interannual variability of Okhotsk Sea Intermediate Water, IGS International Symposium on Sea Ice, Dunedin, New Zealand, December 5-9 (7), 2005.

Massom, R. A., A. Worby, V. Lytle, T. Markus, I. Allison, T. Scambos, H. Enomoto, K. Tateyama, T. Haran, J. C. Comiso, A. Pfaffling, T. Tamura, A. Muto, P. Kanagaratnam, B. Giles, N. Young, G. Hyland, and E. Key: ARISE (Antarctic Remote Ice Sensing Experiment) in the East 2003: Validation of satellite-derived sea-ice data products, IGS International Symposium on Sea Ice, Dunedin, New Zealand, December 5-9 (6), 2005. (Poster)

Tamura, T., K. I. Ohshima, H. Enomoto, K. Tateyama, A. Muto, S. Ushio, and R. A. Massom: Validation of sea ice thickness calculated from AVHRR data in an Antarctic coastal polynya, IGS International Symposium on Sea Ice, Dunedin, New Zealand, December 5-9 (5), 2005.

Tamura, T., and K. I. Ohshima: Estimation of sea ice production for the Ross Sea coastal polynya from SSM/I and AVHRR data, 3rd International Conference on the Oceanography of the Ross Sea Antarctica, Venice, Italy, October 10-14 (12), 2005.

Ohshima, K. I., T. Tamura, and S. Nihashi: Detection of coastal polynyas and ice production in the Antarctic and Okhotsk Seas from SSM/I, IEEE International Geoscience and Remote Sensing Symposium 2005, Seoul, Korea, July 25-29 (27), 2005.


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