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3. Space science

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  1. Predicting geomagnetic conditions based on in-situ solar wind observations allows us to evade disasters caused by large electromagnetic disturbances originating from the Sun to save lives and protect economic ...

    Authors: Ryozo Kitajima, Motoharu Nowada and Ryotaro Kamimura
    Citation: Earth, Planets and Space 2022 74:145
  2. This study, for the first time, reports the geomagnetically conjugate structure of a plasma bubble extending to the mid-latitudes and the asymmetrical structure of the decay of the plasma bubble during a geoma...

    Authors: Takuya Sori, Yuichi Otsuka, Atsuki Shinbori, Michi Nishioka and Septi Perwitasari
    Citation: Earth, Planets and Space 2022 74:120
  3.  The responses of two High-Intensity Long-Duration Continuous AE Activity (HILDCAA) events are investigated using solar wind observations at L1, magnetospheric measurements at geosynchronous orbit, and changes...

    Authors: Diptiranjan Rout, Ram Singh, K. Pandey, T. K. Pant, C. Stolle, D. Chakrabarty, S. Thampi and T. Bag
    Citation: Earth, Planets and Space 2022 74:91
  4. Observations and theoretical analysis on the night-time mid-latitude ionospheric irregularities support the postulation of frequently coupled E and F regions. In this paper, we attempt at asserting this notion...

    Authors: Weizheng Fu, Tatsuhiro Yokoyama, Nicholas Ssessanga, Mamoru Yamamoto and Peng Liu
    Citation: Earth, Planets and Space 2022 74:83
  5. In this paper, we present the D-region ionospheric response during the lifespan (10–19 December 2020) of a severe category 5 tropical cyclone (TC) Yasa in the South Pacific by using the very low frequency (VLF...

    Authors: Paolo A. A. L. Redoblado, Sarwan Kumar, Abhikesh Kumar and Sushil Kumar
    Citation: Earth, Planets and Space 2022 74:65
  6. Very low frequency (VLF) waves (about 3–30 kHz) in the Earth’s magnetosphere interact strongly with energetic electrons and are a key element in controlling dynamics of the Van Allen radiation belts. Bistatic ...

    Authors: James P. McCollough, Yoshizumi Miyoshi, Gregory P. Ginet, William R. Johnston, Yi-Jiun Su, Michael J. Starks, Yoshiya Kasahara, Hirotsugu Kojima, Shoya Matsuda, Iku Shinohara, Paul Song, Bodo W. Reinisch, Ivan A. Galkin, Umran S. Inan, David S. Lauben, Ivan Linscott…
    Citation: Earth, Planets and Space 2022 74:64
  7. Atomic oxygen (O) and atomic hydrogen (H) in the mesopause region are critical species, governing chemistry, airglow, and energy budget. However, they cannot be directly measured by satellite remote sensing te...

    Authors: Mikhail Yu. Kulikov, Mikhail V. Belikovich, Mykhaylo Grygalashvyly, Gerd R. Sonnemann and Alexander M. Feigin
    Citation: Earth, Planets and Space 2022 74:44
  8. Data from three all-sky cameras in Kiruna and Tjautjas (Sweden) were used to estimate the altitude of pulsating arc-like forms using optical tomography. The event under consideration occurred during the substo...

    Authors: Vladimir Safargaleev, Tima Sergienko, Keisuke Hosokawa, Shin-ichiro Oyama, Yasunobu Ogawa, Yoshizumi Miyoshi, Satoshi Kurita and Ryochi Fujii
    Citation: Earth, Planets and Space 2022 74:31
  9. Very low frequency wave intensity variations measured by the Kannuslehto station, Finland in the frequency range 0–12 kHz between 2016 and 2020 are analyzed by the principal component analysis (PCA). As the an...

    Authors: Barbora Bezděková, František Němec and Jyrki Manninen
    Citation: Earth, Planets and Space 2022 74:30
  10. The ionosphere exhibits some characteristic perturbations during sudden stratospheric warming (SSW) events, of which the mechanism is not thoroughly understood. This study focuses on the latitudinal and interh...

    Authors: Jing Liu, Donghe Zhang, Shuji Sun, Yongqiang Hao and Zuo Xiao
    Citation: Earth, Planets and Space 2022 74:22
  11. Wave–particle interactions are fundamental processes in space plasma, and some plasma waves, including electrostatic solitary waves (ESWs), are recognised as broadband noises (BBNs) in the electric field spect...

    Authors: Masaki N. Nishino, Yoshiya Kasahara, Yuki Harada, Yoshifumi Saito, Hideo Tsunakawa, Atsushi Kumamoto, Shoichiro Yokota, Futoshi Takahashi, Masaki Matsushima, Hidetoshi Shibuya, Hisayoshi Shimizu, Yukinaga Miyashita, Yoshitaka Goto and Takayuki Ono
    Citation: Earth, Planets and Space 2022 74:9
  12. A spectrogram of Power Line Harmonic Radiation (PLHR) consists of a set of lines with frequency spacing corresponding exactly to 50 or 60 Hz. It is distinct from a spectrogram of Magnetospheric Line Radiation ...

    Authors: Michel Parrot, Frantisěk Němec, Morris B. Cohen and Mark Gołkowski
    Citation: Earth, Planets and Space 2022 74:4
  13. Using the ionospheric total electron content (TEC) data from ground-based Global Navigation Satellite System (GNSS) receivers in Japan, we compared ionospheric responses to five explosive volcanic eruptions 20...

    Authors: Mokhamad Nur Cahyadi, Eko Yuli Handoko, Ririn Wuri Rahayu and Kosuke Heki
    Citation: Earth, Planets and Space 2021 73:228
  14. The global amplitude of the westward propagating quasi-16-day waves (16DW) with wavenumber 1 (Q16W1), the strongest component of 16DW, are derived from the European Centre for Medium-Range Weather Forecasts ER...

    Authors: Wentao Tang, Shaodong Zhang, Chunming Huang, Kaiming Huang, Yun Gong and Quan Gan
    Citation: Earth, Planets and Space 2021 73:210
  15. Poloidal–toroidal magnetic field decomposition is a useful application of the Mie representation and the decomposition method enables us to determine the current density observationally and unambiguously in th...

    Authors: S. Toepfer, Y. Narita, W. Exner, D. Heyner, P. Kolhey, K. -H. Glassmeier and U. Motschmann
    Citation: Earth, Planets and Space 2021 73:204
  16. The ionosphere is one of the important sources for magnetospheric plasma, particularly for heavy ions with low charge states. We investigate the effect of solar illumination on the number flux of ion outflow u...

    Authors: Naritoshi Kitamura, Kanako Seki, Kunihiro Keika, Yukitoshi Nishimura, Tomoaki Hori, Masafumi Hirahara, Eric J. Lund, Lynn M. Kistler and Robert J. Strangeway
    Citation: Earth, Planets and Space 2021 73:202
  17. Using numerical filtering techniques allowing us to reduce noise from sferics, we are able to clearly study a new type of differently structured very low frequency (VLF) radio waves above f = 4 kHz at the grou...

    Authors: Claudia Martinez-Calderon, Jyrki K. Manninen, Jemina T. Manninen and Tauno Turunen
    Citation: Earth, Planets and Space 2021 73:191
  18. Discovering such structures as the third radiation belt (or “storage ring”) has been a major observational achievement of the NASA Radiation Belt Storm Probes program (renamed the “Van Allen Probes” mission in...

    Authors: Daniel N. Baker
    Citation: Earth, Planets and Space 2021 73:189
  19. Large-amplitude geomagnetically induced currents (GICs) are the natural consequences of the solar–terrestrial connection triggered by solar eruptions. The threat of severe damage of power grids due to the GICs...

    Authors: Yusuke Ebihara, Shinichi Watari and Sandeep Kumar
    Citation: Earth, Planets and Space 2021 73:163
  20. 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, mode...

    Authors: 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…
    Citation: Earth, Planets and Space 2021 73:159
  21. The east–west component of magnetic field variation (∆D-component) at Davao station (Philippines, geomagnetic latitude: – 2.22˚N) are used to investigate the characteristics of the long-term Inter-Hemispheric Fie...

    Authors: Manjula Ranasinghe, Akiko Fujimoto, Akimasa Yoshikawa and Chandana Jayaratne
    Citation: Earth, Planets and Space 2021 73:146
  22. Van Allen Probes in situ observations are used to examine detailed subpacket structure observed in strong VLF (very low frequency) rising-tone chorus elements observed at the time of a rapid MeV electron energ...

    Authors: John C. Foster, Philip J. Erickson and Yoshiharu Omura
    Citation: Earth, Planets and Space 2021 73:140
  23. We study the influence of real structure of electromagnetic ion-cyclotron wave packets in the Earth’s radiation belts on precipitation of relativistic electrons. Automatic algorithm is used to distinguish isol...

    Authors: Veronika S. Grach, Andrei G. Demekhov and Alexey V. Larchenko
    Citation: Earth, Planets and Space 2021 73:129
  24. This paper demonstrates and assesses the capability of the advanced three-dimensional (3-D) ionosphere tomography technique, during severe conditions. The study area is northeast Asia and quasi-Japan-centred. ...

    Authors: Nicholas Ssessanga, Mamoru Yamamoto and Susumu Saito
    Citation: Earth, Planets and Space 2021 73:124
  25. We have developed ISEE_Wave (Institute for Space-Earth Environmental Research, Nagoya University - Plasma Wave Analysis Tool), an interactive plasma wave analysis tool for electric and magnetic field waveforms...

    Authors: Shoya Matsuda, Yoshizumi Miyoshi, Satoko Nakamura, Masahiro Kitahara, Masafumi Shoji, Tomoaki Hori, Shun Imajo, Chae-Woo Jun, Satoshi Kurita, Yoshiya Kasahara, Ayako Matsuoka and Iku Shinohara
    Citation: Earth, Planets and Space 2021 73:110

    The Correction to this article has been published in Earth, Planets and Space 2021 73:125

  26. 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 Environ...

    Authors: 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…
    Citation: Earth, Planets and Space 2021 73:108
  27. This study investigates the medium-scale traveling ionospheric disturbances (MSTIDs) statistically at the low-latitude equatorial ionization anomaly (EIA) region in the northern hemisphere. We apply the automa...

    Authors: Pin-Hsuan Cheng, Charles Lin, Yuichi Otsuka, Hanli Liu, Panthalingal Krishanunni Rajesh, Chia-Hung Chen, Jia-Ting Lin and M. T. Chang
    Citation: Earth, Planets and Space 2021 73:105
  28. We attempted to reproduce the total electron content (TEC) variation in the Earth's atmosphere from the temporal variation of the solar flare spectrum of the X9.3 flare on September 6, 2017. The flare spectrum...

    Authors: Kyoko Watanabe, Hidekatsu Jin, Shohei Nishimoto, Shinsuke Imada, Toshiki Kawai, Tomoko Kawate, Yuichi Otsuka, Atsuki Shinbori, Takuya Tsugawa and Michi Nishioka
    Citation: Earth, Planets and Space 2021 73:96
  29. Nonlinear processes associated with the generation process of whistler-mode chorus emissions are summarized. The nonlinear dynamics of energetic electrons interacting with a coherent whistler-mode wave and the...

    Authors: Yoshiharu Omura
    Citation: Earth, Planets and Space 2021 73:95

    The Correction to this article has been published in Earth, Planets and Space 2021 73:121

  30. Geomagnetically induced currents (GICs) in a quasi-meridional power transmission line on the Kola Peninsula are analyzed during the intervals of Pc5/Pi3 (frequency range from 1.5 to 5 mHz) pulsations recorded ...

    Authors: Nadezda V Yagova, Vyacheslav A Pilipenko, Yaroslav A Sakharov and Vasily N Selivanov
    Citation: Earth, Planets and Space 2021 73:88
  31. X-rays and extreme ultraviolet (EUV) emissions from solar flares rapidly change the physical composition of the Earth’s thermosphere and ionosphere, thereby causing space weather phenomena such as communicatio...

    Authors: Shohei Nishimoto, Kyoko Watanabe, Toshiki Kawai, Shinsuke Imada and Tomoko Kawate
    Citation: Earth, Planets and Space 2021 73:79
  32. The parameterization of the magnetospheric field contribution, generated by currents flowing in the magnetosphere is of major importance for the analysis of Mercury’s internal magnetic field. Using a combinati...

    Authors: S. Toepfer, Y. Narita, K. -H. Glassmeier, D. Heyner, P. Kolhey, U. Motschmann and B. Langlais
    Citation: Earth, Planets and Space 2021 73:65
  33. We developed an operational solar flare prediction model using deep neural networks, named Deep Flare Net (DeFN). DeFN can issue probabilistic forecasts of solar flares in two categories, such as ≥ M-class and...

    Authors: Naoto Nishizuka, Yûki Kubo, Komei Sugiura, Mitsue Den and Mamoru Ishii
    Citation: Earth, Planets and Space 2021 73:64
  34. It is widely recognised that filament disappearances or eruptions are frequently associated with Coronal Mass Ejections (CMEs). Since CMEs are a major source of disturbances of the space environment surroundin...

    Authors: Daikichi Seki, Kenichi Otsuji, Takako T. Ishii, Ayumi Asai and Kiyoshi Ichimoto
    Citation: Earth, Planets and Space 2021 73:58
  35. A solar energetic particle (SEP) event generates a shower of secondary generated particles in the Earth’s atmosphere down to lower altitudes to cause an atmospheric radiation storm (ARS). The high-energy secon...

    Authors: Susumu Saito, Navinda Kithmal Wickramasinghe, Tatsuhiko Sato and Daikou Shiota
    Citation: Earth, Planets and Space 2021 73:57
  36. Ionospheric total electron content (TEC) is one of the key parameters for users of radio-based systems, such as the Global Navigation Satellite System, high-frequency communication systems, and space-based rem...

    Authors: Michi Nishioka, Susumu Saito, Chihiro Tao, Daikou Shiota, Takuya Tsugawa and Mamoru Ishii
    Citation: Earth, Planets and Space 2021 73:52
  37. In gradual Solar Energetic Particle (SEP) events, shock waves driven by coronal mass ejections (CMEs) play a major role in accelerating particles, and the energetic particle flux enhances substantially when th...

    Authors: Mitsuo Oka, Takahiro Obara, Nariaki V. Nitta, Seiji Yashiro, Daikou Shiota and Kiyoshi Ichimoto
    Citation: Earth, Planets and Space 2021 73:31

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