Zobrazeno 1 - 10
of 303
pro vyhledávání: '"Okitsugu WATANABE"'
Autor:
Hideaki Motoyama, Akiyoshi Takahashi, Yoichi Tanaka, Kunio Shinbori, Morihiro Miyahara, Takayasu Yoshimoto, Yoshiyuki Fujii, Toshitaka Suzuki, Teruo Furukawa, Kumiko Goto-Azuma, Keisuke Suzuki, Atsuhiro Muto, Makoto Igarashi, Tetsuhide Yamasaki, Shuji Fujta, Takeshi Saito, Genta Watanabe, Atsushi Furusaki, Yuanscheng Li, Chung Ji Woong, Kotaro Fukui, Fumio Nakazawa, Takao Kameda, Koji Fujita, Ichio Obinata, Takashi Saito, Kokichi Kamiyama, Jun Kinoshita, Nobuhiko Azuma, Yoshiki Nakayama, Okitsugu Watanabe, Morimasa Takata, Yukio Ozawa, Akio Kobayashi, Yasushi Yoshise
Publikováno v:
Antarctic Record, Vol 64, Pp 284-329 (2020)
The second deep ice coring project was carried out at Dome Fuji, Antarctica. Following the pilot hole drilling in 2001, deep ice core drilling was conducted for four years from the 2003/2004 austral summer season, reaching a depth of 3035.22 m in Jan
Externí odkaz:
https://doaj.org/article/6744d6a6ebce4b9ba1f2000405562940
Publikováno v:
Antarctic Record, Vol 47, Iss 2, Pp 101-110 (2003)
We measured the isotope ratio of hydrogen (δD) in melted ice samples by reduction of the water sample with chromium powder. The reproducibility of the δD measurement is within 1.0‰. The δD of surface snow from coast to inland on the Antarctica i
Externí odkaz:
https://doaj.org/article/72b520f0e7264bbc8a9f6fd734603c04
Experimental results on improved JARE deep ice core drill-Experiments in Rikubetsu, Hokkaido in 2002
Autor:
Takao Kameda, Yoshiyuki Fujii, Akiyoshi Takahashi, Yoichi Tanaka, Hideki Narita, Kunio Shinbori, Nobuhiko Azuma, Teruo Furukawa, Takayasu Yoshimoto, Morihiro Miyahara, Makato Igarashi, Mika Kohno, Sumito Matoba, Yoko Toyama, Kazuhide Satow, Shuhei Takahashi, Okitsugu Watanabe
Publikováno v:
Antarctic Record, Vol 46, Iss 2, Pp 377-398 (2002)
Deep ice coring to bedrock (3028m in depth) at Dome Fuji Station is planned during three successive summer seasons starting from 2003/2004. An improved JARE deep ice core drill (12.2m in length and 3.8m in maximum core length) was developed in Decemb
Externí odkaz:
https://doaj.org/article/0e5f423445cf4266ae95b8c70f080f82
Autor:
Yoshiyuki Fujii, Nobuhiko Azuma, Yoichi Tanaka, Akiyoshi Takahashi, Kunio Shinbori, Yoshiki Nakayama, Hideaki Motoyama, Kazuo Katagiri, Shuji Fujita, Morihiro Miyahara, Takao Kameda, Takashi Saito, Takeshi Saito, Hitoshi Shoji, Takayuki Shiraiwa, Hideki Narita, Kokichi Kamiayma, Teruo Furukawa, Hideo Maeno, Hiroyuki Enomoto, Renji Naruse, Kotaro Yokoyama, Takeo Hondo, Yutaka Aageta, Kunio Kawada, Okitsugu Watanabe
Publikováno v:
Antarctic Record, Vol 43, Iss 1, Pp 162-210 (1999)
Deep ice coring was carried out at Dome Fuji Station, Antarctica in 1995 and 1996 following a pilot borehole drilled and cased with FRP pipes in 1993,and reached 2503.52m in December 1996. Total numbers of ice coring runs below the pilot borehole and
Externí odkaz:
https://doaj.org/article/018d3fde5a144a0c859a52d67cf3a1e7
Publikováno v:
Antarctic Record, Vol 42, Iss 1, Pp 64-80 (1998)
Ion chromatography is one of the major methods for analyzing many kinds of anions and cations in a liquid solutions in a short time. In this time, we measured anions and cations in snow and ice collected in polar regions. The generally concentration
Externí odkaz:
https://doaj.org/article/abaaade7146e4e84acb698c0b2760910
Autor:
Okitsugu Watanabe
Publikováno v:
Antarctic Record, Vol 41, Iss 2, Pp 537-548 (1997)
The 35th Japanese Antarctic Research Expedition (JARE-35) consisted of forty wintering members and sixteen summer members plus three foreign scientists from the U.S.A. and Australia. The icebreaker SHIRASE left Tokyo on November 14,1993,and arrived a
Externí odkaz:
https://doaj.org/article/f0b6972574ba44309a7ded62055f1562
Autor:
Satoru Kanamori, Nobuko Kanamori, Okitsugu Watanabe, Masataka Nishikawa, Kokichi Kamiyama, Hideaki Motoyama
Publikováno v:
Antarctic Record, Vol 41, Iss 1, Pp 291-309 (1997)
Atmospheric aerosols were studied at Syowa Station, Antarctica for 3 years from 1988 to 1990. Some chemical species, such as exSO_4^, MSA and NH_4^+, showed an annual trend, high in summer and low in winter. The seasonal variations of gaseous HCl, SO
Externí odkaz:
https://doaj.org/article/f675e94229a04fcb84bec05ff4eeb9eb
Publikováno v:
Antarctic Record, Vol 40, Iss 3, Pp 321-332 (1996)
The natural radioactive nuclide, ^Pb, with a half-life of 22.3 years in snow and ice is useful for considering the origin of atmospheric aerosols and also for estimating the sedimentation rate onto a glacier. The α spectrometric method for sensitive
Externí odkaz:
https://doaj.org/article/5c4c2f55b107463d970b1102c06ea80a
Publikováno v:
Antarctic Record, Vol 40, Iss 2, Pp 255-258 (1996)
The main purpose of the workshop is to discuss recent results of Antarctic research using SAR data. It was held on February 6,1996 at the National Institute of Polar Research (NIPR), the number of participants being about 30. The contents of the work
Externí odkaz:
https://doaj.org/article/21d10d1d05cc49cab56244517da6605f
Autor:
Akiyoshi Takahashi, Yoshiyuki Fujii, Hideki Narita, Yoichi Tanaka, Hideaki Motoyama, Kunio Shinbori, Morihiro Miyahara, Nobuhiko Azuma, Yoshiki Nakayama, Okitsugu Watanabe
Publikováno v:
Antarctic Record, Vol 40, Iss 1, Pp 25-42 (1996)
A deep ice coring system for Dome Fuji project has been developed under a project coordinated by the National Institute of Polar Research. Three reports have been issued already, mainly about the development of the drill system. We report here on the
Externí odkaz:
https://doaj.org/article/4d6c5466a9be4b4f8e7971f84633bb75