Zobrazeno 1 - 10
of 268
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
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
Publikováno v:
Progress in Earth and Planetary Science, Vol 5, Iss 1, Pp 1-13 (2018)
Abstract Using 630 nm airglow data observed by an airglow imager on the International Space Station (ISS), the occurrence of equatorial plasma bubbles (EPBs) is studied. In order to examine the physical mechanisms in the boundary region between the E
Externí odkaz:
https://doaj.org/article/92e71d59436e43599a3b555b9481f3c1
Autor:
Toshitaka Tsuda, Eugenio Realini, Yoshinori Shoji, Akinori Saito, Masanori Yabuki, Masato Furuya
Publikováno v:
Earth, Planets and Space, Vol 70, Iss 1, Pp 1-5 (2018)
Abstract Recent advances in the field of atmospheric and ionospheric sensing by GNSS and SAR technologies were discussed during two workshops held in February 2016 and October 2016 in Italy, hosted by GEOlab of Politecnico di Milano under partial sup
Externí odkaz:
https://doaj.org/article/d4a02212978c47e28667fd88f1227d2d