Zobrazeno 1 - 10
of 370
pro vyhledávání: '"Akinori, Saito"'
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-15 (2024)
Abstract Magnetoencephalography (MEG) conventionally operates within high-performance magnetic shields due to the extremely weak magnetic field signals from the measured objects and the narrow dynamic range of the magnetic sensors employed for detect
Externí odkaz:
https://doaj.org/article/d8a058e597c44097a444523dbc99c169
Akademický článek
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Akademický článek
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Publikováno v:
Earth, Planets and Space, Vol 76, Iss 1, Pp 1-16 (2024)
Abstract Geographical and seasonal variations of gravity wave events in the upper mesosphere were investigated using the nightglow imaging data obtained by the Visible and near-Infrared Spectral Imager (VISI) on the Ionosphere, Mesosphere, upper Atmo
Externí odkaz:
https://doaj.org/article/56778d6b80c442469c7812c807bce122
Publikováno v:
Earth, Planets and Space, Vol 76, Iss 1, Pp 1-15 (2024)
Abstract This study provides a physical mechanism for the temporary intensification of wintertime sporadic E layers (EsLs) in 2009. It is widely accepted that vertical wind shears control EsL formations. EsL intensity is minimal in winter, partially
Externí odkaz:
https://doaj.org/article/35cad46e15d447a69253635b7d766bc7
Autor:
Shin’ya Nakano, Yuta Hozumi, Akinori Saito, Ichiro Yoshikawa, Atsushi Yamazaki, Kazuo Yoshioka, Go Murakami
Publikováno v:
Earth, Planets and Space, Vol 76, Iss 1, Pp 1-18 (2024)
Abstract The $$\textrm{O}^+$$ O + density distribution in the nightside ionosphere has been reconstructed from extreme ultraviolet (EUV) images taken by the EUVI-B imager of the International Space Station Ionosphere, Mesosphere, upper Atmosphere, an
Externí odkaz:
https://doaj.org/article/92bb6999722743a2a76708d2e29ee2ed
Publikováno v:
Earth, Planets and Space, Vol 75, Iss 1, Pp 1-20 (2023)
Abstract The present study aims to reveal horizontal sporadic E (Es) movements driven by atmospheric diurnal/semi-diurnal tides using a three-dimensional (3D) ionospheric model. Horizontal Es movements have been investigated since the mid-twentieth c
Externí odkaz:
https://doaj.org/article/fa0ef9e136f54a08b19724cd871db5aa
Autor:
Toshihiko Iyemori, Akiyasu Yamada, Tadashi Aoyama, Kornyanat Hozumi, Yoshihiro Yokoyama, Yoko Odagi, Yasuharu Sano, Vijak Pangsapa, Thanawat Jarupongsakul, Akinori Saito, Masato Iguchi
Publikováno v:
Earth, Planets and Space, Vol 74, Iss 1, Pp 1-17 (2022)
Abstract Correlation between rainfall and short period GPS-TEC (total electron content) variations are investigated by using the precipitation data obtained on the ground and estimated from satellite observations (JAXA/GSMaP) as a proxy of lower atmo
Externí odkaz:
https://doaj.org/article/38aa402dffc54be69f583f372ec1a866
Autor:
Shin’ya Nakano, Yuta Hozumi, Akinori Saito, Ichiro Yoshikawa, Atsushi Yamazaki, Kazuo Yoshioka, Go Murakami
Publikováno v:
Earth, Planets and Space, Vol 73, Iss 1, Pp 1-12 (2021)
Abstract The extreme ultraviolet (EUV) imager, EUVI-B, on board the International Space Station (ISS) under the International Space Station–ionosphere-mesosphere-atmosphere plasmasphere cameras (ISS-IMAP) mission was originally intended to observe
Externí odkaz:
https://doaj.org/article/d98e3085037144bc99c5cf2cfb7da40b
Publikováno v:
Earth, Planets and Space, Vol 72, Iss 1, Pp 1-9 (2020)
Abstract We present the first simulations that successfully reproduce the day-to-day variability of the mid-latitude sporadic E ( $$E_s$$ E s ) layers. $$E_s$$ E s layers appearing in the lower ionosphere have been extensively investigated to monitor
Externí odkaz:
https://doaj.org/article/71d93d9e38d3428796e5351fff22d8c3