Zobrazeno 1 - 10
of 264
pro vyhledávání: '"Tadahiko, OGAWA"'
Review of the accomplishments of mid-latitude Super Dual Auroral Radar Network (SuperDARN) HF radars
Autor:
Nozomu Nishitani, John Michael Ruohoniemi, Mark Lester, Joseph Benjamin Harold Baker, Alexandre Vasilyevich Koustov, Simon G. Shepherd, Gareth Chisham, Tomoaki Hori, Evan G. Thomas, Roman A. Makarevich, Aurélie Marchaudon, Pavlo Ponomarenko, James A. Wild, Stephen E. Milan, William A. Bristow, John Devlin, Ethan Miller, Raymond A. Greenwald, Tadahiko Ogawa, Takashi Kikuchi
Publikováno v:
Progress in Earth and Planetary Science, Vol 6, Iss 1, Pp 1-57 (2019)
Abstract The Super Dual Auroral Radar Network (SuperDARN) is a network of high-frequency (HF) radars located in the high- and mid-latitude regions of both hemispheres that is operated under international cooperation. The network was originally design
Externí odkaz:
https://doaj.org/article/0372cd4bc9474f34b33f98de42ccd740
Autor:
Nozomu Nishitani, John Michael Ruohoniemi, Mark Lester, Joseph Benjamin Harold Baker, Alexandre Vasilyevich Koustov, Simon G. Shepherd, Gareth Chisham, Tomoaki Hori, Evan G. Thomas, Roman A. Makarevich, Aurélie Marchaudon, Pavlo Ponomarenko, James A. Wild, Stephen E. Milan, William A. Bristow, John Devlin, Ethan Miller, Raymond A. Greenwald, Tadahiko Ogawa, Takashi Kikuchi
Publikováno v:
Progress in Earth and Planetary Science, Vol 6, Iss 1, Pp 1-1 (2019)
After publication of this article (Nishitani et al. 2019), it was brought to our attention that the figure 5 is incorrect, where the positions of DCE and SPS were misplaced. The correct figure 5 is as below, the original publication has been correcte
Externí odkaz:
https://doaj.org/article/338e36a8b5b14f8280432d20e1cca94c
Autor:
Keisuke Hosokawa, Yasuo Takeda, Tadahiko Ogawa, Akira Kadokura, Akira Sessai Yukimatu, Natsuo Sato
Publikováno v:
Antarctic Record, Vol 57, Iss 3, Pp 317-328 (2013)
This paper reports simultaneous observations of visible noctilucent clouds (NLC) and polar mesosphere summer echoes (PMSE) at Syowa Station (69°01′S, 38°61′E) in Antarctica. During a 1.5 h interval from 2000 to 2130 UT (2300 to 0030 LT) on Feb.
Externí odkaz:
https://doaj.org/article/181fec40aa7c486e985badb5b5acaff3
Publikováno v:
Antarctic Record, Vol 43, Iss 1, Pp 1-15 (1999)
We report calibration of the optical instruments of the Optical Mesosphere Thermosphere Imagers (OMTI) using facilities at the National Institute of Polar Research. OMTI has been developed to investigate dynamics of the upper atmosphere through noctu
Externí odkaz:
https://doaj.org/article/c1548565e68f4384aba53c4fab99602b
Midlatitude mesosphere summer echoes (MSE) at the VHF band (VHF-MSE) were observed for 13 years (2000-2002 and 2009-2018) with a 46.5 MHz radar at Wakkanai, Japan (45.4ºN, 141.8ºE). VHF-MSE are active during June-July and appear only in the daytime
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dbff3bcfbe118ae0724439d5dcafe028
https://doi.org/10.21203/rs.3.rs-249808/v1
https://doi.org/10.21203/rs.3.rs-249808/v1
Autor:
Nozomu Nishitani, Tsutomu Nagatsuma, Natsuo Sato, Kenro Nozaki, Tadahiko Ogawa, Takashi Kikuchi, Hisao Yamagishi, Kiyoshi Igarashi, Akira Sessai Yukimatu
Publikováno v:
Polar Science. 28:100671
We report the history and progress of the Japanese contribution to the Super Dual Auroral Radar Network (SuperDARN) project; especially focusing on the initial stage of SENSU ( S yowa South and E ast HF Radars of N IPR for SU perDARN) project. The SE
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::59a3fc3ba85abd9ca18cb71fac586003
http://id.nii.ac.jp/1291/00016344/
http://id.nii.ac.jp/1291/00016344/
Autor:
Shoichiro Fukao, Yuichi Otsuka, Kazuo Shiokawa, Shinji Saito, F. Onoma, Mamoru Yamamoto, Tadahiko Ogawa
Publikováno v:
Annales Geophysicae, Vol 23, Pp 2385-2390 (2005)
Annales Geophysicae, Vol 23, Iss 7, Pp 2385-2390 (2005)
Annales Geophysicae, Vol 23, Iss 7, Pp 2385-2390 (2005)
We report simultaneous observations of atmospheric gravity waves (AGW) in OI (557.7nm) and OH airglow images and VHF radar backscatter from field-aligned irregularities (FAI) in the E-region during the SEEK-2 (Sporadic-E Experiment over Kyushu 2) cam
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::63b1eb5d10d326f2ffcde79966a7b4f8
https://www.ann-geophys.net/23/2385/2005/
https://www.ann-geophys.net/23/2385/2005/
Publikováno v:
Annales Geophysicae, Vol 21, Iss 4, Pp 1047-1055 (0000)
Annales Geophysicae, Vol 21, Pp 1047-1055 (2003)
Annales Geophysicae, Vol 21, Pp 1047-1055 (2003)
Peculiar near range echoes observed in summer with the SuperDARN HF radar in Finland are presented. The echoes were detected at four frequencies of 9, 11, 13 and 15 MHz at slant ranges of 105–250 km for about 100 min. Interferometer measurements in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::83773ccfda1912ded35de6a5b39893ef
https://www.ann-geophys.net/21/1047/2003/
https://www.ann-geophys.net/21/1047/2003/
Autor:
Mitsumu K. Ejiri, Takuji Nakamura, Tadahiko Ogawa, Natsuo Sato, Hidehiko Suzuki, Akira Sessai Yukimatu, Yoshihiro Tomikawa, Makoto Abo, Takuya D. Kawahara, Masaki Tsutsumi
Publikováno v:
Annales Geophysicae, Vol 31, Pp 1793-1803 (2013)
A Rayleigh–Raman lidar system was installed in January 2011 at Syowa Station, Antarctica (69.0° S, 39.6° E). Polar mesospheric clouds (PMCs) were detected by lidar at around 22:30 UTC (LT −3 h) on 4 February 2011, which was the first day of obs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::72bc50dcbbd82c8a8cb7ccbf0aea984d
https://www.ann-geophys.net/31/1793/2013/
https://www.ann-geophys.net/31/1793/2013/
Autor:
Tadahiko Ogawa, Yuichi Otsuka, Kazuo Shiokawa, Takuya Tsugawa, Akinori Saito, Kazuaki Hoshinoo, Keisuke Matunaga, Minoru Kubota, Mamoru Ishii
Publikováno v:
Terrestrial, Atmospheric and Oceanic Sciences, Vol 20, Iss 1, p 287 (2009)
We report on night time air glow imaging observations of the low latitude ionosphere by means of a 630-m all-sky imager in stalled in March 2006 at Yonaguni, Japan (24.5°N, 123.0°E; 14.6°N geomagnetic), about 100 km east of Taiwan. The imager dete
Externí odkaz:
https://doaj.org/article/31b08956497f4a45bde9104c49102f18