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  1. Content type: Article

    The Network MT method was used in the eastern part of the Shikoku district, southwestern Japan, and a total of thirty-nine MT impedances (64 to 2560 sec) were obtained. These MT impedances had their values ave...

    Authors: Satoru Yamaguchi, Yoshiaki Kobayashi, Naoto Oshiman, Kengo Tanimoto, Hideki Murakami, Ichiro Shiozaki, Makoto Uyeshima, Hisashi Utada and Norihiko Sumitomo

    Citation: Earth, Planets and Space 2014 51:BF03352223

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  2. Content type: Article

    In light of newly-acquired geophysical information about earthquake generation in the Tokai area, Central Japan, where occurrence of a great earthquake of magnitude 8 or so has recently been feared, probabilit...

    Authors: Tsuneji Rikitake

    Citation: Earth, Planets and Space 2014 51:BF03352219

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  3. Content type: Article

    An array of 29 vector magnetometers was operated in N-NE Brazil from November 1990 until March 1991. We present the analysis of 16 selected quiet days, for which a simple model of an equivalent current distrib...

    Authors: A. Rigoti, F. H. Chamalaun, N. B. Trivedi and A. L. Padilha

    Citation: Earth, Planets and Space 2014 51:BF03352216

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  4. Content type: Article

    Vertical wavenumber spectra are analyzed by using temperature, zonal wind and meridional wind data obtained with MU radar and radiosondes at the MU observatory in Shigaraki and with operational rawinsondes at ...

    Authors: Shin-Ya Ogino, Manabu D. Yamanaka, Yoshiaki Shibagaki, Toyoshi Shimomai and Shoichiro Fukao

    Citation: Earth, Planets and Space 2014 51:BF03352215

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  5. Content type: Article

    Paleomagnetic and sedimentological studies carried out on two short cores and nine long cores from the bottom sediments from Escondido Lake (south-western Argentina) are described.

    Authors: C. S. G. Gogorza, A. M. Sinito, I. Di Tommaso, J. F. Vilas, K. M. Creer and H. Nuñez

    Citation: Earth, Planets and Space 2014 51:BF03352214

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  6. Content type: Article

    The opening of the Japan Sea backarc basin accompanied dextral, transtensional deformations in the NE Japan arc. To understand the intra-arc deformation we have studied paleomagnetism in the Uetsu area, NE Jap...

    Authors: Atsushi Yamaji, Hiroshi Momose and Masayuki Torii

    Citation: Earth, Planets and Space 2014 51:BF03352213

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  7. Content type: Article

    The pseudospectral method is a high-accuracy numerical modelling technique that requires less computer memory and computation time than the traditional techniques such as the finite-difference method. These ad...

    Authors: Hiroshi Takenaka, Yanbin Wang and Takashi Furumura

    Citation: Earth, Planets and Space 2014 51:BF03352212

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  8. Content type: Article

    We have built an X-ray ultraviolet (XUV) scanner on board Mars orbiter NOZOMI (Planet-B). This scanner has the He I and II emissions from the Martian atmosphere and ionosphere as its main target. These EUV emi...

    Authors: M. Nakamura, K. Yamashita, I. Yoshikawa, K. Shiomi, A. Yamazaki, S. Sasaki, Y. Takizawa, M. Hirahara, W. Miyake, Y. Saito and S. Chakrabarti

    Citation: Earth, Planets and Space 2014 51:BF03352210

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  9. Content type: Article

    The GEOTAIL satellite observed an interesting oscillation phenomenon of low energy plasma (LEP) in the dawnside outer magnetosphere. The oscillation was taking place with a frequency double that of the transve...

    Authors: Tohru Sakurai, Yutaka Tonegawa, Takuya Kitagawa, Motoharu Nowada, Ayako Yamawaki, Toshifumi Mukai, Susumu Kokubun, Tatsundo Yamamoto and Koichiro Tsuruda

    Citation: Earth, Planets and Space 2014 51:BF03352208

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  10. Content type: Article

    The Polar Patrol Balloon No. 6 (PPB#6) observed quasi-periodic pulsations of bremsstrahlung X-rays (E 30∼120 keV) in the daytime of 0855 UT (0914 MLT) ∼ 1630 UT (1614 MLT) on January 5, 1993, near Syowa Station, ...

    Authors: Yo Hirasima, Hisashi Shimobayashi, Hisao Yamagishi, Hiromu Suzuki, Hiroyuki Murakami, Akihiro Yamada, Takamasa Yamagami, Michiyoshi Namiki and Masahiro Kodama

    Citation: Earth, Planets and Space 2014 51:BF03352207

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  11. Content type: Article

    Perturbed periods characterized by the AA* index compiled from 1868 to 1992 are considered. Our analysis of the geomagnetic activity is done by considering the even-odd effect, that was observed in the maximum so...

    Authors: V. M. Silbergleit

    Citation: Earth, Planets and Space 2014 51:BF03352205

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  12. Content type: Article

    We carried out both absolute and relative gravity measurements in the Izu Peninsula just before and after the March 1997 earthquake swarm occurred. The measurements revealed significant absolute gravity change...

    Authors: Shigeo Yoshida, Gaku Seta, Shuhei Okubo and Shigeki Kobayashi

    Citation: Earth, Planets and Space 2014 51:BF03352203

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  13. Content type: Research News

    According to the theory of plate tectonics proposed in the late 1960’s, the Earth’s surface is covered by about ten rigid plates, which are generated at mid-oceanic ridges, move to oceanic trenches, and there ...

    Authors: Mizuho Ishida, Shigenori Maruyama, Daisuke Suetsugu, Shigeru Matsuzaka and Takao Eguchi

    Citation: Earth, Planets and Space 2014 51:BF03352201

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  14. Content type: Article

    Recent geophysical evidence from seismology, mineral physics, viscosity inversion shows that the mantle between 400 and 1000 km is extremely complicated, with intermediate scale structures present regionally a...

    Authors: David A. Yuen, Laszlo Cserepes and Brigit A. Schroeder

    Citation: Earth, Planets and Space 2014 50:BF03352198

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  15. Content type: Article

    A technique for detecting intermediate-period (6–12 s) Sd P phases converted from S to P at a depth d in the source region is described. Previously, these phases were detected in short-period array recordings of ...

    Authors: Lev Vinnik, Fenglin Niu and Hitoshi Kawakatsu

    Citation: Earth, Planets and Space 2014 50:BF03352193

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  16. Content type: Article

    Broadband seismic waveform data are stacked to investigate the mantle discontinuities beneath a station. A polarized filter is devised to remove pseudo-signals in the stacked traces, which might be otherwise m...

    Authors: Fenglin Niu and Hitoshi Kawakatsu

    Citation: Earth, Planets and Space 2014 50:BF03352191

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  17. Content type: Article

    Recent P wave travel-time tomographic studies using data from the International Seismological Centre (ISC) catalog determine a large-scale subhorizontal high velocity anomaly in the northwestern Pacific subduc...

    Authors: Fumiko Tajima, Yoshio Fukao, Masayuki Obayashi and Taro Sakurai

    Citation: Earth, Planets and Space 2014 50:BF03352190

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  18. Content type: Article

    We describe the scientific purposes and experimental set-up of an international deployment of a 3 component broadband seismometer package on the ocean floor in Monterey Bay which took place during the summer o...

    Authors: Barbara Romanowicz, Debra Stakes, Jean Paul Montagner, Pascal Tarits, Robert Uhrhammer, Michael Begnaud, Eleonore Stutzmann, Michael Pasyanos, Jean-Francois Karczewski, Steven Etchemendy and Douglas Neuhauser

    Citation: Earth, Planets and Space 2014 50:BF03352188

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  19. Content type: Article

    In order to better understand earthquake generation, tectonics at plate boundaries, and better image the Earth’s deep structures, real-time geophysical measurements in the ocean are required. We therefore atte...

    Authors: Junzo Kasahara, Toshinori Sato, Hiroyasu Momma and Yuichi Shirasaki

    Citation: Earth, Planets and Space 2014 50:BF03352187

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  20. Content type: Article

    We have developed systems for measuring differential displacements across a fault zone, and examined their resolutions through seafloor experiments at relatively short baselines. A system for a seafloor extens...

    Authors: Hiromi Fujimoto, Kin-ichiro Koizumi, Yukihito Osada and Toshihiko Kanazawa

    Citation: Earth, Planets and Space 2014 50:BF03352186

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  21. Content type: Article

    A new type of SeaFloor ElectroMagnetic Station (SFEMS) has been newly developed by adding a magnetotelluric (MT) variograph to its prototype built previously (Toh and Hamano, 1997). New SFEMS is able to conduc...

    Authors: Hiroaki Toh, Tadanori Goto and Yozo Hamano

    Citation: Earth, Planets and Space 2014 50:BF03352185

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  22. Content type: Article

    Authors: Hitoshi Kawakatsu, Craig Bina and Alex Forte

    Citation: Earth, Planets and Space 2014 50:BF03352184

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  23. Content type: Correspondence

    Imanishi (this issue) commented that (1) the noise level at Matsushiro, Japan (MA) is much lower than at Syowa Station, Antarctica (SY), (2) oscillation signals are not observed at MA, and therefore (3) peaks ...

    Authors: Kazunari Nawa, Naoki Suda, Yoshio Fukao, Tadahiro Sato, Yuichi Aoyama and Kazuo Shibuya

    Citation: Earth, Planets and Space 2014 50:BF03352183

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  24. Content type: Article

    Recent three-dimensional simulations of the Martian plasma and magnetic field environment found some unique effects—a strong asymmetry of the bow shock and the magnetic field draping, asymmetry of plasma inflo...

    Authors: E. Dubinin, K. Sauer, M. Delva and T. Tanaka

    Citation: Earth, Planets and Space 2014 50:BF03352181

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  25. Content type: Article

    Large number of high dispersion whistlers recorded at low latitude station Varanasi (L = 1.07) are analysed and it is find out that they have propagated along L≃ 2.12–2.76. This is explained by considering the pr...

    Authors: R. P. Singh, U. P. Singh, Ashok K. Singh and D. P. Singh

    Citation: Earth, Planets and Space 2014 50:BF03352180

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  26. Content type: Article

    To study the ring current structure in the inner magnetosphere, we have statistically examined the magnetic field data acquired by ETS-VI (the Engineering Test Satellite-VI). During a magnetic storm, the Dst inde...

    Authors: N. Terada, T. Iyemori, M. Nosé, T. Nagai, H. Matsumoto and T. Goka

    Citation: Earth, Planets and Space 2014 50:BF03352179

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  27. Content type: Article

    A short review is given of the contemporary concepts and controversies concerning the electromagnetic effects observed in space which are considered to be the results of energy transport from surface and/or lo...

    Authors: Yu. Galperin and M. Hayakawa

    Citation: Earth, Planets and Space 2014 50:BF03352175

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  28. Content type: Article

    Fluid flow in the core is assumed to consist of a slowly varying (on time scales > magnetic diffusion time) part and a smaller, rapidly varying part as in the theory of the hydromagnetic dynamo put forward by ...

    Authors: A. Bhattacharyya

    Citation: Earth, Planets and Space 2014 50:BF03352174

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  29. Content type: Article

    Co-seismic horizontal displacements, which have been obtained from recently released GPS observations on the Akashi Kaikyo Bridge, are examined for their consistency with displacements observed in the vicinity...

    Authors: Kazuki Koketsu, Shingo Yoshida and Hiromichi Higashihara

    Citation: Earth, Planets and Space 2014 50:BF03352173

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