Zobrazeno 1 - 10
of 700
pro vyhledávání: '"I. Ohshima"'
Autor:
Daisuke Hirano, Takeshi Tamura, Kazuya Kusahara, Masakazu Fujii, Kaihe Yamazaki, Yoshihiro Nakayama, Kazuya Ono, Takuya Itaki, Yuichi Aoyama, Daisuke Simizu, Kohei Mizobata, Kay I. Ohshima, Yoshifumi Nogi, Stephen R. Rintoul, Esmee van Wijk, Jamin S. Greenbaum, Donald D. Blankenship, Koji Saito, Shigeru Aoki
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-15 (2023)
Abstract The Totten Glacier in East Antarctica, with an ice volume equivalent to >3.5 m of global sea-level rise, is grounded below sea level and, therefore, vulnerable to ocean forcing. Here, we use bathymetric and oceanographic observations from pr
Externí odkaz:
https://doaj.org/article/c79ba67253354d47a0ff9cc2ae3fa015
Autor:
Alessandro Silvano, Sarah Purkey, Arnold L. Gordon, Pasquale Castagno, Andrew L. Stewart, Stephen R. Rintoul, Annie Foppert, Kathryn L. Gunn, Laura Herraiz-Borreguero, Shigeru Aoki, Yoshihiro Nakayama, Alberto C. Naveira Garabato, Carl Spingys, Camille Hayatte Akhoudas, Jean-Baptiste Sallée, Casimir de Lavergne, E. Povl Abrahamsen, Andrew J. S. Meijers, Michael P. Meredith, Shenjie Zhou, Takeshi Tamura, Kaihe Yamazaki, Kay I. Ohshima, Pierpaolo Falco, Giorgio Budillon, Tore Hattermann, Markus A. Janout, Pedro Llanillo, Melissa M. Bowen, Elin Darelius, Svein Østerhus, Keith W. Nicholls, Craig Stevens, Denise Fernandez, Laura Cimoli, Stanley S. Jacobs, Adele K. Morrison, Andrew McC. Hogg, F. Alexander Haumann, Ali Mashayek, Zhaomin Wang, Rodrigo Kerr, Guy D. Williams, Won Sang Lee
Publikováno v:
Frontiers in Marine Science, Vol 10 (2023)
Dense, cold waters formed on Antarctic continental shelves descend along the Antarctic continental margin, where they mix with other Southern Ocean waters to form Antarctic Bottom Water (AABW). AABW then spreads into the deepest parts of all major oc
Externí odkaz:
https://doaj.org/article/7ec8799498c04806b82197b2a7faab09
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-11 (2022)
Abstract Chlorofluorocarbon (CFC) and sulfur hexafluoride (SF6) were used to investigate the timescale of Antarctic Bottom Water (AABW) that spreads off Cape Darnley (CD) in East Antarctica. The age of the AABW was estimated based on the observed SF6
Externí odkaz:
https://doaj.org/article/ad1d94a135d7410e9f11f09864c85582
Autor:
A. D. Fraser, R. A. Massom, M. S. Handcock, P. Reid, K. I. Ohshima, M. N. Raphael, J. Cartwright, A. R. Klekociuk, Z. Wang, R. Porter-Smith
Publikováno v:
The Cryosphere, Vol 15, Pp 5061-5077 (2021)
Landfast sea ice (fast ice) is an important though poorly understood component of the cryosphere on the Antarctic continental shelf, where it plays a key role in atmosphere–ocean–ice-sheet interaction and coupled ecological and biogeochemical pro
Externí odkaz:
https://doaj.org/article/7aa407daf1784738a54b1a15e7b29e9f
Autor:
Vigan Mensah, Kay. I. Ohshima
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-15 (2021)
Abstract The western subarctic Pacific exhibits major biological productivity fed by the Oyashio Current and its two source waters: Western Subarctic Water, which supplies nutrients from the subarctic Pacific, and cold Okhotsk Sea Intermediate Water
Externí odkaz:
https://doaj.org/article/df51575c0cc242eea1adfa9f8a697062
Autor:
A. D. Fraser, R. A. Massom, K. I. Ohshima, S. Willmes, P. J. Kappes, J. Cartwright, R. Porter-Smith
Publikováno v:
Earth System Science Data, Vol 12, Pp 2987-2999 (2020)
Landfast sea ice (fast ice) is an important component of the Antarctic nearshore marine environment, where it strongly modulates ice sheet–ocean–atmosphere interactions and biological and biogeochemical processes, forms a key habitat, and affects
Externí odkaz:
https://doaj.org/article/dcc296de7e454539aea8eb797fd41837
Autor:
Daisuke Hirano, Takeshi Tamura, Kazuya Kusahara, Kay I. Ohshima, Keith W. Nicholls, Shuki Ushio, Daisuke Simizu, Kazuya Ono, Masakazu Fujii, Yoshifumi Nogi, Shigeru Aoki
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-12 (2020)
East Antarctic ice shelves typically have cold ice cavities with low basal melt rates. Here the authors direct observational evidence of high basal melt rates beneath Shirase Glacier Tongue in East Antarctica, driven by inflowing warm water guided by
Externí odkaz:
https://doaj.org/article/2458cc318d18427ca57280c4e9661776
Autor:
Genta Mizuta, Yasushi Fukamachi, Daisuke Simizu, Yoshimasa Matsumura, Yujiro Kitade, Daisuke Hirano, Masakazu Fujii, Yoshifumi Nogi, Kay I. Ohshima
Publikováno v:
Frontiers in Marine Science, Vol 8 (2021)
This study examines the seasonal evolution of Cape Darnley Bottom Water (CDBW), using the results of mooring and hydrographic measurements in the slope region off Cape Darnley in 2008–2009 and 2013–2014. Newly formed CDBW began reaching the weste
Externí odkaz:
https://doaj.org/article/864766caac184037b555e1e1a3813944
Autor:
Sohey Nihashi, Nathan T. Kurtz, Thorsten Markus, Kay I. Ohshima, Kazutaka Tateyama, Takenobu Toyota
Publikováno v:
Annals of Glaciology, Vol 59, Pp 101-111 (2018)
Sea-ice thickness in the Sea of Okhotsk is estimated for 2004–2008 from ICESat derived freeboard under the assumption of hydrostatic balance. Total ice thickness including snow depth (htot) averaged over 2004–2008 is 95 cm. The interannual variab
Externí odkaz:
https://doaj.org/article/40f34012d988424aa42a8e7886dfab0c
Autor:
D. Nomura, M. A. Granskog, A. Fransson, M. Chierici, A. Silyakova, K. I. Ohshima, L. Cohen, B. Delille, S. R. Hudson, G. S. Dieckmann
Publikováno v:
Biogeosciences, Vol 15, Pp 3331-3343 (2018)
Rare CO2 flux measurements from Arctic pack ice show that two types of ice contribute to the release of CO2 from the ice to the atmosphere during winter and spring: young, thin ice with a thin layer of snow and older (several weeks), thicker ice w
Externí odkaz:
https://doaj.org/article/d18b654f6cbb4396ad9a5639f0541b76