Y. Takahashi, Y. Okazaki, M. Sato, H. Miyahara, K. Sakanoi, P. K. Hong, N. Hoshino
Atmospheric Chemistry and Physics 10 1577-1584 Feb 2010
Although linkages between solar activity and the earth's climate have been suggested and the 11-year cycle in solar activity evident in sunspot numbers is the most examined example of periodicity in previous studies, no quantitative evidence indic...
R. L. Collins, M. J. Taylor, K. Nielsen, K. Mizutani, Y. Murayama, K. Sakanoi, M. T. DeLand
Journal of Atmospheric and Solar-Terrestrial Physics 71 446-452 Mar 2009
We report observations of a noctilucent cloud (NLC) over central Alaska by a ground-based lidar and camera on the night of 9-10 August 2005. The lidar at Poker Flat Research Range (PFRR), Chatanika (65°N, 147°W) measured a maximum integrated backs...
W. Singer, R. Latteck, P. Hoffman, B. P. Williams, D. C. Fritts, Y. Murayama, K. Sakanoi
Geophysical Research Letters 32 1-5 Apr 2005
Observations with a meteor radar, two medium-frequency (MF) radars, and a sodium lidar at ALOMAR at Andenes, Norway (69.3°N, 16.0°E) were used to derive tidal winds and temperatures at altitudes from 72 km to 94 km for a period from June 15 to Jul...
K. Sakanoi, K. Sakanoi, K. Sakanoi, H. Fukunishi, H. Fukunishi, Y. Kasahara, Y. Kasahara
Journal of Geophysical Research: Space Physics 110 Jan 2005
Optical observations of flickering aurora by a high-speed imaging photometer system were carried out at Syowa Station in 1998. A comparison between observed parameters of flickering aurora and theoretical values of dispersive Alfvén waves indicate...
H. Mori, M. Ishii, Y. Murayama, M. Kubota, K. Sakanoi, M. Y. Yamamoto, Y. Monzen, D. Lummerzheim, B. J. Watkins
Annales Geophysicae 22 1613-1622 May 2004
This study is a statistical analysis on energy distribution of precipitating electrons, based on CNA (cosmic noise absorption) data obtained from the 256-element imaging riometer in Poker Flat, Alaska (65.11° N, 147.42° W), and optical data measur...
Kazuyo Sakanoi, Kazuyo Sakanoi, Kazuyo Sakanoi, H. Fukunishi, H. Fukunishi
Journal of Geophysical Research: Space Physics 109 Jan 2004
In order to investigate the generation mechanisms of flickering aurora, especially the physical processes producing its temporal and spatial structures, an advanced optical observation system called "a high-speed imaging photometer system" was dev...
H. Fukunishi, H. Fukunishi, Y. Takahashi, Y. Takahashi, M. Kubota, M. Kubota, K. Sakanoi, K. Sakanoi, U. S. Inan, U. S. Inan, W. A. Lyons, W. A. Lyons
Geophysical Research Letters 23 2157-2160 Dec 1996
Observations of optical phenomena at. high altitude above thunderstorms using a multichannel high-speed photometer and image intensified CCD cameras were carried out at Yucca Ridge Field Station (40°40′ N, 104°.56′ W), Colorado as part of the SPRI...
Mamoru Ishii, Minoru Kubota, Yasuhiro Murayama, Mark Conde, Roger W. Smith, Shoichi Okano, Kazuyo Sakanoi
Journal of the National Institute of Information and Communications Technology 54 87-96 Mar 2007
We developed Fabry-Perot interferometer named NICT-FPI in Alaska project and have observed in several observatories in domestic and overseas. We deployed the instruments at Poker Flat research range and Eagle observatory, Alaska on 1998 and starte...
