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  1. The basic theory for reconstruction of two-dimensional, coherent, magnetohydrostatic structures with nonisotropic plasma pressure is developed. Three field-line invariants are found in the system. A new Poisso...

    Authors: Wai-Leong Teh
    Citation: Earth, Planets and Space 2018 70:34
    Content type: Express Letter Published on:

    The Correction to this article has been published in Earth, Planets and Space 2018 70:185

  2. The effects of solar flares on the propagation of subionospheric VLF signals from NWC and NLK transmitter stations monitored at a low-latitude station, Suva (18.2°S, 178.4°E), Fiji, between December 2006 and D...

    Authors: Abhikesh Kumar and Sushil Kumar
    Citation: Earth, Planets and Space 2018 70:29
    Content type: Full paper Published on:

  3. Understanding of underlying mechanisms of drastic variations of the near-Earth space (geospace) is one of the current focuses of the magnetospheric physics. The science target of the geospace research project ...

    Authors: Kanako Seki, Yoshizumi Miyoshi, Yusuke Ebihara, Yuto Katoh, Takanobu Amano, Shinji Saito, Masafumi Shoji, Aoi Nakamizo, Kunihiro Keika, Tomoaki Hori, Shin’ya Nakano, Shigeto Watanabe, Kei Kamiya, Naoko Takahashi, Yoshiharu Omura, Masahito Nose…
    Citation: Earth, Planets and Space 2018 70:17
    Content type: Full paper Published on:

  4. We describe the principles of the Wave–Particle Interaction Analyzer (WPIA) and the implementation of the Software-type WPIA (S-WPIA) on the Arase satellite. The WPIA is a new type of instrument for the direct...

    Authors: Yuto Katoh, Hirotsugu Kojima, Mitsuru Hikishima, Takeshi Takashima, Kazushi Asamura, Yoshizumi Miyoshi, Yoshiya Kasahara, Satoshi Kasahara, Takefumi Mitani, Nana Higashio, Ayako Matsuoka, Mitsunori Ozaki, Satoshi Yagitani, Shoichiro Yokota, Shoya Matsuda, Masahiro Kitahara…
    Citation: Earth, Planets and Space 2018 70:4
    Content type: Full paper Published on:

  5. This paper summarizes the specifications and initial evaluation results of Wire Probe Antenna (WPT) and Electric Field Detector (EFD), the key components for the electric field measurement of the Plasma Wave E...

    Authors: Yasumasa Kasaba, Keigo Ishisaka, Yoshiya Kasahara, Tomohiko Imachi, Satoshi Yagitani, Hirotsugu Kojima, Shoya Matsuda, Masafumi Shoji, Satoshi Kurita, Tomoaki Hori, Atsuki Shinbori, Mariko Teramoto, Yoshizumi Miyoshi, Tomoko Nakagawa, Naoko Takahashi, Yukitoshi Nishimura…
    Citation: Earth, Planets and Space 2017 69:174
    Content type: Full paper Published on:

  6. The medium-energy particle experiments–ion mass analyzer (MEP-i) was developed for the exploration of energization and radiation in geospace (ERG) mission (Arase), in order to measure the three-dimensional dis...

    Authors: Shoichiro Yokota, Satoshi Kasahara, Takefumi Mitani, Kazushi Asamura, Masafumi Hirahara, Takeshi Takashima, Kazuhiro Yamamoto and Yasuko Shibano
    Citation: Earth, Planets and Space 2017 69:172
    Content type: Full paper Published on:

  7. This paper introduces ISEE_3D, an interactive visualization tool for three-dimensional plasma velocity distribution functions, developed by the Institute for Space-Earth Environmental Research, Nagoya Universi...

    Authors: Kunihiro Keika, Yoshizumi Miyoshi, Shinobu Machida, Akimasa Ieda, Kanako Seki, Tomoaki Hori, Yukinaga Miyashita, Masafumi Shoji, Iku Shinohara, Vassilis Angelopoulos, Jim W. Lewis and Aaron Flores
    Citation: Earth, Planets and Space 2017 69:170
    Content type: Technical report Published on:

  8. In this report, we describe the low-energy electron instrument LEPe (low-energy particle experiments–electron analyzer) onboard the Arase (ERG) spacecraft. The instrument measures a three-dimensional distribut...

    Authors: Yoichi Kazama, Bo-Jhou Wang, Shiang-Yu Wang, Paul T. P. Ho, Sunny W. Y. Tam, Tzu-Fang Chang, Chih-Yu Chiang and Kazushi Asamura
    Citation: Earth, Planets and Space 2017 69:165
    Content type: Full paper Published on:

  9. The plasmas (electrons and ions) in the inner magnetosphere have wide energy ranges from electron volts to mega-electron volts (MeV). These plasmas rotate around the Earth longitudinally due to the gradient an...

    Authors: Kazuo Shiokawa, Yasuo Katoh, Yoshiyuki Hamaguchi, Yuka Yamamoto, Takumi Adachi, Mitsunori Ozaki, Shin-Ichiro Oyama, Masahito Nosé, Tsutomu Nagatsuma, Yoshimasa Tanaka, Yuichi Otsuka, Yoshizumi Miyoshi, Ryuho Kataoka, Yuki Takagi, Yuhei Takeshita, Atsuki Shinbori…
    Citation: Earth, Planets and Space 2017 69:160
    Content type: Full paper Published on:

  12. We report on the large-scale evolution of dipolarization in the near-Earth plasma sheet during an intense (AL ~ −1000 nT) substorm on August 10, 2016, when multiple spacecraft at radial distances between 4 and...

    Authors: Rumi Nakamura, Tsugunobu Nagai, Joachim Birn, Victor A. Sergeev, Olivier Le Contel, Ali Varsani, Wolfgang Baumjohann, Takuma Nakamura, Sergey Apatenkov, Anton Artemyev, Robert E. Ergun, Stephen A. Fuselier, Daniel J. Gershman, Barbara J. Giles, Yuri V. Khotyaintsev, Per-Arne Lindqvist…
    Citation: Earth, Planets and Space 2017 69:129
    Content type: Frontier Letter Published on:

  13. The water-group ion cyclotron waves (ICWs) in Saturn’s magnetosphere were studied using the magnetic field data provided by the MAG magnetometer on board the Cassini satellite. The period from January 2005 to ...

    Authors: Marty Chou and Chio Zong Cheng
    Citation: Earth, Planets and Space 2017 69:122
    Content type: Full paper Published on:

    The Correction to this article has been published in Earth, Planets and Space 2017 69:148

  14. We have investigated the coupling between the stratosphere and mesosphere–lower thermosphere (MLT) in the Southern Hemisphere (SH) during 2010 minor sudden stratospheric warmings (SSWs). Three episodic SSWs we...

    Authors: S. Eswaraiah, Yong Ha Kim, Huixin Liu, M. Venkat Ratnam and Jaewook Lee
    Citation: Earth, Planets and Space 2017 69:119
    Content type: Express Letter Published on:

  15. We have examined multi-instrument observations of the magnetospheric and ionospheric response to the interplanetary shock on January 24, 2012. Apart from various instruments, such as ground and space magnetom...

    Authors: V. B. Belakhovsky, V. A. Pilipenko, Ya. A. Sakharov, D. L. Lorentzen and S. N. Samsonov
    Citation: Earth, Planets and Space 2017 69:105
    Content type: Full paper Published on:

  16. We examined the morphological signatures of 315 omega band aurora events observed using the Time History of Events and Macroscale Interactions during Substorm ground-based all-sky imager network over a period ...

    Authors: Natsuo Sato, Akira Sessai Yukimatu, Yoshimasa Tanaka and Tomoaki Hori
    Citation: Earth, Planets and Space 2017 69:103
    Content type: Letter Published on:

  17. This paper shows a statistical analysis of 10.2 kHz Omega broadcasts of an artificial signal broadcast from ground stations, propagated in the plasmasphere, and detected using an automatic detection method we ...

    Authors: I Made Agus Dwi Suarjaya, Yoshiya Kasahara and Yoshitaka Goto
    Citation: Earth, Planets and Space 2017 69:100
    Content type: Full paper Published on:

  18. We have developed a digital fast Fourier transform spectrometer made of an analog-to-digital converter (ADC) and a field-programmable gate array (FPGA). The base instrument has independent ADC and FPGA modules...

    Authors: Kazumasa Iwai, Yûki Kubo, Hiromitsu Ishibashi, Takahiro Naoi, Kenichi Harada, Kenji Ema, Yoshinori Hayashi and Yuichi Chikahiro
    Citation: Earth, Planets and Space 2017 69:95
    Content type: Technical report Published on:

  19. A space environment data acquisition monitor (SEDA) has been flown onboard the Japanese meteorological satellites ‘Himawari-8/9’ as one of the housekeeping information monitors for satellite operation. SEDA co...

    Authors: Tsutomu Nagatsuma, Kaori Sakaguchi, Yûki Kubo, Piet Belgraver, Frédéric Chastellain, Reto Muff and Takeshi Otomo
    Citation: Earth, Planets and Space 2017 69:75
    Content type: Technical report Published on:

  21. Solar activity of cycle 24 following the deep minimum between cycle 23 and cycle 24 is the weakest one since cycle 14 (1902–1913). Geomagnetic activity is also low in cycle 24. We show that this low geomagneti...

    Authors: Shinichi Watari
    Citation: Earth, Planets and Space 2017 69:70
    Content type: Letter Published on:

  22. Monitoring, tracking and nowcasting of the ionospheric plasma density disturbances using dual-frequency measurements of the Global Positioning System (GPS) signals are effectively carried out during several de...

    Authors: Iurii Cherniak and Irina Zakharenkova
    Citation: Earth, Planets and Space 2017 69:66
    Content type: Letter Published on:

  23. In this paper, we present a statistical and case analysis of nighttime Pc3 pulsations observed from middle to equatorial latitudes during the year 2003. We found two groups of nighttime Pc3 pulsations. Pc3s of...

    Authors: Nadezda V. Yagova, Balazs Heilig, Vyacheslav A. Pilipenko, Akimasa Yoshikawa, Nataliya S. Nosikova, Kiyohumi Yumoto and Jan Reda
    Citation: Earth, Planets and Space 2017 69:61
    Content type: Full paper Published on:

  24. The breakup of Hitomi (ASTRO-H) on 26 March 2016 is analysed. Debris from the fragmentation is used to estimate the time of the event by propagating backwards and estimating the close approach with the parent ...

    Authors: Sven Flegel, James Bennett, Michael Lachut, Marek Möckel and Craig Smith
    Citation: Earth, Planets and Space 2017 69:51
    Content type: Full paper Published on:

  26. We studied the Aa geomagnetic index (aa index daily average) behavior on a monthly timescale using data from 1868 to 2015 for cycles 11–24. We identified solar- and lunar-associated periodicities in the Aa time s...

    Authors: Blanca Mendoza, Marni Pazos and Luis Xavier González
    Citation: Earth, Planets and Space 2016 68:200
    Content type: Full paper Published on:

  27. The astronomical diaries from Babylonia (ADB) are excellent sources of information of natural phenomena, including astronomical ones, in pre-Christ era because it contains the record of highly continuous and s...

    Authors: Hisashi Hayakawa, Yasuyuki Mitsuma, Yusuke Ebihara, Akito Davis Kawamura, Hiroko Miyahara, Harufumi Tamazawa and Hiroaki Isobe
    Citation: Earth, Planets and Space 2016 68:195
    Content type: Full paper Published on:

  28. We carry out a self-consistent simulation of the generation process of whistler-mode chorus by a spatially one-dimensional electron hybrid code, by assuming the magnetic field inhomogeneity corresponding to L = 4...

    Authors: Yuto Katoh and Yoshiharu Omura
    Citation: Earth, Planets and Space 2016 68:192
    Content type: Letter Published on:

  29. E-science on the Web plays an important role and offers the most advanced technology for the integration of data systems. It also makes available data for the research of more and more complex aspects of the ...

    Authors: Bernd Ritschel, Friederike Borchert, Gregor Kneitschel, Günther Neher, Susanne Schildbach, Toshihiko Iyemori, Yukinobu Koyama, Akiyo Yatagai, Tomoaki Hori, Mike Hapgood, Anna Belehaki, Ivan Galkin and Todd King
    Citation: Earth, Planets and Space 2016 68:181
    Content type: Technical report Published on:

  30. The objective of this study is (1) to determine the magnetic cloud (MC) structure associated with the 17 March 2015 storm and (2) to gain an insight into how the storm developed responding to the solar wind co...

    Authors: Katsuhide Marubashi, Kyung-Suk Cho, Rok-Soon Kim, Sujin Kim, Sung-Hong Park and Hiromitsu Ishibashi
    Citation: Earth, Planets and Space 2016 68:173
    Content type: Full paper Published on:

  32. The first super geomagnetic storm (Dst < −200 nT) of solar cycle 24 occurred on “St. Patrick’s day” (17 March 2015). Notably, it was a two-step storm. The source of the storm can be traced back to the solar ev...

    Authors: Chin-Chun Wu, Kan Liou, Ronald P. Lepping, Lynn Hutting, Simon Plunkett, Russ A. Howard and Dennis Socker
    Citation: Earth, Planets and Space 2016 68:151
    Content type: Full paper Published on:

  33. Recent imager and radar observations in the nightside polar cap have shown evidence that polar cap patches are associated with localized flow channels. To understand how flow channels propagate from the daysi...

    Authors: Boyi Wang, Yukitoshi Nishimura, Larry R. Lyons, Ying Zou, Herbert C. Carlson, Harald U. Frey and Stephen B. Mende
    Citation: Earth, Planets and Space 2016 68:150
    Content type: Full paper Published on:

  34. We investigated evolution of ionospheric currents during sudden commencements using a ground magnetometer network in conjunction with an all-sky imager, which has the advantage of locating field-aligned curren...

    Authors: Yukitoshi Nishimura, Takashi Kikuchi, Yusuke Ebihara, Akimasa Yoshikawa, Shun Imajo, Wen Li and Hisashi Utada
    Citation: Earth, Planets and Space 2016 68:144
    Content type: Full paper Published on:

  35. To clarify the effect of the dawn and dusk terminators on Pi2 pulsations, we statistically analyzed the longitudinal phase and amplitude structures of Pi2 pulsations at middle- to low-latitude stations (GMLat...

    Authors: Shun Imajo, Akimasa Yoshikawa, Teiji Uozumi, Shinichi Ohtani, Aoi Nakamizo, Sodnomsambuu Demberel and Boris Mikhailovich Shevtsov
    Citation: Earth, Planets and Space 2016 68:137
    Content type: Full paper Published on:

  36. We present an analysis of ionospheric irregularities at high latitudes during the 2015 St. Patrick’s Day storm. Our study used measurements from ~2700 ground-based GPS stations and GPS receivers onboard five l...

    Authors: Iurii Cherniak and Irina Zakharenkova
    Citation: Earth, Planets and Space 2016 68:136
    Content type: Letter Published on:

  37. Here we study the global distribution of the plasma density irregularities in the topside ionosphere by using the concurrent GPS and Langmuir probe measurements onboard the Swarm satellites. We analyze 18 mont...

    Authors: Irina Zakharenkova, Elvira Astafyeva and Iurii Cherniak
    Citation: Earth, Planets and Space 2016 68:120
    Content type: Letter Published on:

  38. The aim of this work is to study the properties of the magnetic field’s fluctuations produced by ionospheric and magnetospheric electric currents during the St. Patrick’s Day geomagnetic storm (17 March 2015)....

    Authors: Paola De Michelis, Giuseppe Consolini, Roberta Tozzi and Maria Federica Marcucci
    Citation: Earth, Planets and Space 2016 68:105
    Content type: Full paper Published on:

  40. The electric field instruments onboard the Swarm satellites make high-resolution measurements of the F-region ion drift. This paper presents an initial investigation of preliminary ion drift data made availabl...

    Authors: R. A. D. Fiori, A. V. Koustov, D. H. Boteler, D. J. Knudsen and J. K. Burchill
    Citation: Earth, Planets and Space 2016 68:100
    Content type: Full paper Published on:

  41. Preliminary Swarm Langmuir probe measurements recorded during March 2015, a period of time including the St. Patrick storm, are considered. Specifically, six time periods are identified: two quiet periods befo...

    Authors: Alessio Pignalberi, Michael Pezzopane, Roberta Tozzi, Paola De Michelis and Igino Coco
    Citation: Earth, Planets and Space 2016 68:93
    Content type: Full paper Published on:

  42. Multipoint observations of plasma waves are essential for separating spatial and temporal variations of a plasma turbulence. Miniaturization and high environmental (temperature and radiation) robustness are k...

    Authors: Mitsunori Ozaki, Satoshi Yagitani, Hirotsugu Kojima, Ken Takahashi, Hiroki Koji, Takahiro Zushi and Yuya Tokunaga
    Citation: Earth, Planets and Space 2016 68:91
    Content type: Technical report Published on:

  44. The 3D instability of spontaneous fast magnetic reconnection process is studied with magnetohydrodynamic simulations, where 2D model of the spontaneous fast magnetic reconnection process is destabilized in thr...

    Authors: Tohru Shimizu, Hiroyuki Torii and Koji Kondoh
    Citation: Earth, Planets and Space 2016 68:89
    Content type: Full paper Published on:

  47. A relatively new method based on measurements by multipoint continuous Doppler sounding is applied to study the occurrence rate, propagation velocities, and directions of spread F structures over Tucumán, Nor...

    Authors: Jaroslav Chum, Jann-Yenq Liu, Shih-Ping Chen, Miguel Angel Cabrera, Jan Laštovička, Jiří Baše, Dalia Burešová, Jiří Fišer, František Hruška and Rodolfo Ezquer
    Citation: Earth, Planets and Space 2016 68:56
    Content type: Full paper Published on:

  48. In this study, we develop a three-dimensional ionospheric tomography with the ground-based global position system (GPS) total electron content observations. Because of the geometric limitation of GPS observati...

    Authors: C. H. Chen, A. Saito, C. H. Lin, M. Yamamoto, S. Suzuki and G. K. Seemala
    Citation: Earth, Planets and Space 2016 68:32
    Content type: Full paper Published on:

    The Correction to this article has been published in Earth, Planets and Space 2020 72:118

    The Erratum to this article has been published in Earth, Planets and Space 2016 68:122

  49. In this study, we constructed an empirical model of the equatorial electrojet (EEJ), including local time and longitudinal dependence, based on simultaneous data from 12 magnetometer stations located in six lo...

    Authors: Nurul Shazana Abdul Hamid, Huixin Liu, Teiji Uozumi and Akimasa Yoshikawa
    Citation: Earth, Planets and Space 2015 67:205
    Content type: Letter Published on:

  50. A statistical study using a large dataset of Super Dual Auroral Radar Network (SuperDARN) observations is conducted for transient ionospheric plasma flows associated with sudden impulses (SI) recorded on groun...

    Authors: Tomoaki Hori, Atsuki Shinbori, Shigeru Fujita and Nozomu Nishitani
    Citation: Earth, Planets and Space 2015 67:190
    Content type: Frontier letter Published on:
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