Zobrazeno 1 - 10
of 236
pro vyhledávání: '"Ryuho KATAOKA"'
Autor:
Sergio E. Vidal‐Luengo, Lauren W. Blum, Alessandro Bruno, T. Gregory Guzik, Georgia deNolfo, Anthony W. Ficklin, Ryuho Kataoka, Shoji Torii
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 12, Pp n/a-n/a (2024)
Abstract Relativistic electron precipitation (REP) refers to the release of high‐energy electrons initially trapped in the outer radiation belt, which then precipitate into Earth's upper atmosphere, contributing significantly to the rapid depletion
Externí odkaz:
https://doaj.org/article/e6c1b323ef55416ab01afb716049ecc9
Autor:
Ryuho Kataoka, Yoshizumi Miyoshi, Kazuo Shiokawa, Nozomu Nishitani, Kunihiro Keika, Takanobu Amano, Kanako Seki
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 12, Pp n/a-n/a (2024)
Abstract We report a citizen science‐motivated study on the cause of an unusually bright red aurora as witnessed from Hokkaido, Japan during a magnetic storm on 1 December 2023. The auroral brightness of 5 kR is unusual for the Dst index peak of on
Externí odkaz:
https://doaj.org/article/90f6c755cdeb46d49c2120bca5ed5c96
Publikováno v:
Earth, Planets and Space, Vol 75, Iss 1, Pp 1-10 (2023)
Abstract Physics-based simulations are important for elucidating the fundamental mechanisms behind the time-varying complex ionospheric conditions, such as ionospheric potential, against unprecedented solar wind variations incident on the Earth’s m
Externí odkaz:
https://doaj.org/article/8b1827b3d88a47a5aa7ce4e4deb7ee7a
Publikováno v:
Frontiers in Earth Science, Vol 11 (2023)
Galactic cosmic rays are one of the possible mediators of the solar influence on climate. However, the impacts of GCR on clouds and climate systems are not fully understood. In this paper, we show that the high-altitude clouds associated with deep co
Externí odkaz:
https://doaj.org/article/4d70ef2c4924410083513ac0c2f567bf
Autor:
Mitsunori Ozaki, Kazuo Shiokawa, Ryuho Kataoka, Martin Mlynczak, Larry Paxton, Martin Connors, Satoshi Yagitani, Shion Hashimoto, Yuichi Otsuka, Satoshi Nakahira, Ian Mann
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-11 (2022)
Abstract Relativistic electron precipitation (REP) from the Earth’s radiation belt plays an important role in mesospheric ozone loss as a connection between space weather and the climate system. However, the rapid (tens of minutes) destruction of m
Externí odkaz:
https://doaj.org/article/1fb4502d423441d98d55246d8837e012
Autor:
Kanya Kusano, Kiyoshi Ichimoto, Mamoru Ishii, Yoshizumi Miyoshi, Shigeo Yoden, Hideharu Akiyoshi, Ayumi Asai, Yusuke Ebihara, Hitoshi Fujiwara, Tada-Nori Goto, Yoichiro Hanaoka, Hisashi Hayakawa, Keisuke Hosokawa, Hideyuki Hotta, Kornyanat Hozumi, Shinsuke Imada, Kazumasa Iwai, Toshihiko Iyemori, Hidekatsu Jin, Ryuho Kataoka, Yuto Katoh, Takashi Kikuchi, Yûki Kubo, Satoshi Kurita, Haruhisa Matsumoto, Takefumi Mitani, Hiroko Miyahara, Yasunobu Miyoshi, Tsutomu Nagatsuma, Aoi Nakamizo, Satoko Nakamura, Hiroyuki Nakata, Naoto Nishizuka, Yuichi Otsuka, Shinji Saito, Susumu Saito, Takashi Sakurai, Tatsuhiko Sato, Toshifumi Shimizu, Hiroyuki Shinagawa, Kazuo Shiokawa, Daikou Shiota, Takeshi Takashima, Chihiro Tao, Shin Toriumi, Satoru Ueno, Kyoko Watanabe, Shinichi Watari, Seiji Yashiro, Kohei Yoshida, Akimasa Yoshikawa
Publikováno v:
Earth, Planets and Space, Vol 73, Iss 1, Pp 1-29 (2021)
Abstract Although solar activity may significantly impact the global environment and socioeconomic systems, the mechanisms for solar eruptions and the subsequent processes have not yet been fully understood. Thus, modern society supported by advanced
Externí odkaz:
https://doaj.org/article/da97472c80ab47bcb6e874f2ad039b84
Autor:
Mamoru Ishii, Daikou Shiota, Chihiro Tao, Yusuke Ebihara, Hitoshi Fujiwara, Takako Ishii, Kiyoshi Ichimoto, Ryuho Kataoka, Kiyokazu Koga, Yuki Kubo, Kanya Kusano, Yoshizumi Miyoshi, Tsutomu Nagatsuma, Aoi Nakamizo, Masao Nakamura, Michi Nishioka, Susumu Saito, Tatsuhiko Sato, Takuya Tsugawa, Shigeo Yoden
Publikováno v:
Earth, Planets and Space, Vol 73, Iss 1, Pp 1-20 (2021)
Abstract We surveyed the relationship between the scale of space weather events and their occurrence rate in Japan, and we discussed the social impact of these phenomena during the Project for Solar–Terrestrial Environment Prediction (PSTEP) in 201
Externí odkaz:
https://doaj.org/article/86a94970bc4144b196c46c018bda98e6
Autor:
Ryuho Kataoka
Publikováno v:
Earth, Planets and Space, Vol 72, Iss 1, Pp 1-10 (2020)
Abstract Statistical distributions are investigated for magnetic storms, sudden commencements (SCs), and substorms to identify the possible amplitude of the one in 100-year and 1000-year events from a limited data set of less than 100 years. The list
Externí odkaz:
https://doaj.org/article/fb113ac8a56d43bcbc0ff69f79453c2c
Autor:
Mitsunori Ozaki, Yoshizumi Miyoshi, Kazuo Shiokawa, Keisuke Hosokawa, Shin-ichiro Oyama, Ryuho Kataoka, Yusuke Ebihara, Yasunobu Ogawa, Yoshiya Kasahara, Satoshi Yagitani, Yasumasa Kasaba, Atsushi Kumamoto, Fuminori Tsuchiya, Shoya Matsuda, Yuto Katoh, Mitsuru Hikishima, Satoshi Kurita, Yuichi Otsuka, Robert C. Moore, Yoshimasa Tanaka, Masahito Nosé, Tsutomu Nagatsuma, Nozomu Nishitani, Akira Kadokura, Martin Connors, Takumi Inoue, Ayako Matsuoka, Iku Shinohara
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-9 (2019)
Electron precipitation plays major role in magnetospheric physics and space weather. Here the authors show nonlinear behavior of the wave–particle interaction in the magnetosphere as the evolution of chorus electromagnetic waves detected by the Ara
Externí odkaz:
https://doaj.org/article/a8e8ab072ee84a02aa87d6b8d7a78197
Autor:
Ryuho Kataoka, Takanori Nishiyama, Yoshimasa Tanaka, Akira Kadokura, Herbert Akihito Uchida, Yusuke Ebihara, Mitsumu K. Ejiri, Yoshihiro Tomikawa, Masaki Tsutsumi, Kaoru Sato, Yoshizumi Miyoshi, Kazuo Shiokawa, Satoshi Kurita, Yoshiya Kasahara, Mitsunori Ozaki, Keisuke Hosokawa, Shoya Matsuda, Iku Shinohara, Takeshi Takashima, Tatsuhiko Sato, Takefumi Mitani, Tomoaki Hori, Nana Higashio
Publikováno v:
Earth, Planets and Space, Vol 71, Iss 1, Pp 1-10 (2019)
Abstract Transient mesospheric echo in the VHF range was detected at an altitude of 65–70 km during the auroral breakup that occurred from 2220 to 2226 UT on June 30, 2017. During this event, the footprint of the Arase satellite was located within
Externí odkaz:
https://doaj.org/article/aaf6da4cd7f742bf8232d03c550591e6