国際シンポジウム発表

2013年

開催地: ランカスター、英国

Kosch, M. J., T. T. Tsuda, C. Anderson, A. Aruliah, Y. Ogawa and S. Nozawa
Meso-scale observations of Joule heating and field-aligned current near an auroral arc - an EISCAT-3D simulation

Oyama, S., J. Kurihara, T. T. Tsuda, Y. Miyoshi, K. Shiokawa and B. J. Watkins
Height-dependent ionospheric responses associated with substorm onset measured with the EISCAT UHF radar

Fujiwara, H., S. Nozawa, Y. Ogawa, R. Kataoka, Y. Miyoshi, H. Jin and H. Shinagawa
EISCAT observations of CME-induced dayside ionospheric heating on March 12, 2012

Oyama, S., J. Kurihara, B. J. Watkins, T. T. Tsuda and T. Takahashi
Temporal variations of the ion-neutral collision frequency in the polar lower ionosphere during periods of geomagnetic disturbances

T. Ishida, Y. Ogawa, A. Kadokura and I. Häggström
Multi-timescale statistical analysis of ionospheric trough with long-term EISCAT dataset

Ogawa, Y., M. Sawatsubashi, S. C. Buchert, K. Hosokawa, S. Taguchi, S. Nozawa, S. Oyama, T. T. Tsuda and R. Fujii
Relationship between auroral substorm and ionupflow in the nightside polar ionosphere (poster)


2011年

開催地:青島、中国。

Satonori Nozawa
The neutral wind dynamics in the polar lower thermosphere (invited)

Satonori Nozawa, Y. Ogawa, H, Miyaoka, S. Oyama and R. Fujii
Japanese activities, EISCAT radars and other instruments in northern Scandinavia

Mike J. Kosch, Y. Ogawa, M.T. Rietveld, S. Nozawa and R. Fujii
A novel EISCAT technique to monitor thermospheric neutral density

Stephan Buchert and Yasunobu Ogawa
Thin current sheets, naturally enhanced lines and upwelling of the thermosphere

Toru tanimori, Sachiko Arvelius and Esa Turunen
Observation of MeV-Gamma-Rays from relativistic electron precipitation using a Electron Tracking Compton Camera with Balloon Borne Experiment

Yasunobu Ogawa, Tetsuo Motoba, and Ingemar Haggstrom, and Satonori Nozawa
Long-term variations and trends of ionospheric temperatures observed with the EISCAT Tromso UHF radar (poster)

Mike J. Kosch, I. Yiu, C. Anderson, T. Tsuda, Y. Ogawa, S. Nozawa, A. Aruliah, V.Howells, L.J. Baddeley,I.W. McCrea, J.A. Wild
Meso-scale observations of Joule heating near an auroral arc and ion-neutral collision frequency in the polar cap E-region (poster)


2009年

開催地:トロムソ、ノルウェー。

J. Moen, Y. Rinne, H. Carlson, K. Oksavik, R. Fujii, H. Opgenoorth,
Thin Birkeland Current Arcs and Reversed Flow Channels in the Winter Cusp Ionosphere

S. Oyama, S. Nozawa, R. Fujii, T. Tsuda
Estimation of the layered ionospheric conductance using data taken with the multi-wavelength photometer and
the EISCAT UHF radar

J. Moen, K. S. Jacobsen, T. Abe, Y. Saito, K. Oksavik, Y. Ogawa, S. Milan, M. Lester, D. A. Lorentzen, A. Skjaveland
ON THE ICI-2 SOUNDING ROCKET: FIRST RESULTS

Y. Ogawa, S. C. Buchert, I. Haggstrom3, H. Miyaoka, R. Fujii, S. Nozawa
Ion upflows and Naturally enhanced ion-acoustic lines seen in the IPY ESR continuous run

J. Kurihara, S. Oyama, S. Nozawa, R. Fujii, Y. Ogawa, N. Iwagami, T. Abe, M. F. Larsen, M. Yamamoto, Y. Yokoyama, S.
Watanabe, S. Nanbu, K. Yoshita
Initial reports of DELTA-2 campaign: Overview of the Dynamics and Energetics of the Lower Thermosphere in Aurora 2 campaign

S. Oyama, K. Shiokawa, J. Kurihara, S. Nozawa, T. Tsuda, Y. Koizumi-Kurihara, Y. Otsuka, M. Tsutsumi, C. M. Hall, C. Meek, A. Manson
Initial reports of DELTA-2 campaign: tides measured with FPI, MF radar, and meteor radar

S. Oyama, K. Shiokawa, J. Kurihara, S. Nozawa, T. Tsuda, R. Fujii, Y. Otsuka
Initial reports of DELTA-2 campaign: results from FPI and all-sky cameras

S. Nozawa, S. Oyama, Y. Ogawa, J. Kurihara, M. Tutumi, R. Fujii
Initial reports of DELTA-2 rocket campaign: results from the EISCAT radar observations

M. F. Larsen, M. Yamamoto, J. Kurihara, T. Abe, S. Watanabe, T. Morinaga
The DELTA-2 campaign: First results from the rocket chemical release experiment

S. Buchert, Y. Ogawa
Statistics of the convection electric field variability observed by EISCAT (poster)

Y. Koizumi-Kurihara, S. Nozawa, S. Oyama, R. Fujii, S. Kawamura, Y. Murayama, C. Hall
Characteristics of atmospheric tidal wave in the polar mesosphere observed with two MF radars at Tromso and Poker Flat over 10 years (poster)

T. T. Tsuda, S. Nozawa, S. Oyama, Y. Ogawa, R. Fujii
Statistical study of high-speed neutral winds in the lower thermosphere based on EISCAT Svalbard radar observations (poster)


2007年

開催地:マリエハム、フィンランド。

S. Oyama, S. Maeda, H. Shinagawa and B. J. Watkins
Physical mechanism to generate vertical motions in the polar lower thermosphere

Y. Ogawa, K. Seki, M. Hirahara, K. Asamura, T. Sakanoi, Y. Ebihara, Y. Obuchi, S. C. Buchert, S. Nozawa, and R. Fujii,
Relationship between ion upflows and suprathermal ions observed with the EISCAT Svalbard Radar and Reimei satellite

O. Amm, R. Nakamura, T. Takada, K. Kauristie, H. U. Frey, C. Owen
11:30-11:45 Observations of an auroral streamer in a double oval configuration

R. Fujii, H. Handa, S. Nozawa and Y. Ogawa
Dependence of the electromagnetic and precipitating particle energy inputs to the ionosphere upon the sunlit/shade condition of the ionosphere (invited)

J. Moen, X. C. Oiu, Herbert Carlson, R. Fujii and I. W. McCrea
On the diurnal variability in F2-region plasma density above EISCAT Svalbard Radar

S. Oyama and B. J. Watkins
Aspect sensitivity of the first 100 ms HF-modification measured with the MUIR at HAARP

J. Lunde, Stephan Buchert, Y. Ogawa, M. Hirahara, K. Seki, Y. Ebihara, T. Sakanoi, and K. Asamura,
Ion-dispersion in the cusp: A case study investigated with satellite and radar (poster)


2005年

開催地:キルナ、スウェーデン。

O. Amm, R. Nakamura, H. U. Frey, Y. Ogawa, M. Kubyshkina, A. Balogh and H. Reme
Substorm topology in the ionosphere and magnetosphere during a flux rope event in the magnetotail

R. Fujii, M. Fujimura, S. Nozawa and Y. Ogawa
Electrodynamics of the poleward moving auroral form

Y. Ogawa, A. Sakurai, S. Nozawa and R. Fujii
Solar activity dependence of ion upflow in the polar ionosphere

S. Maeda, S. Nozawa, Y. Ogawa, A. Brekke and S. Oyama
F-region ion temperature distribution over the auroral region and the polar cap

B. Gustavsson, T. B. Leyser, B. U. E. Brandstrom, M. Kosch, M. Rietveld, T. Aso and A. Steen
Asymmetry in HF-pump enhanced 4278 A emissions around electron gyroharmonics

E. Griffin, A. Aruliah, I. McWhirter, M. Kosch, A. Kavanagh, A. Senior, T. Abe
Combined ground-based optical support for the aurora (Delta) sounding rocket campaign (poster)

T. Tsuda, S. Nozawa, Y. Ogawa, R. Fujii and A. Brekke
A study of the lower thermospheric wind in the polar cap using ESR CP-2 data obtained in summer (poster)

Y. Hobara, H. Nilsson, S. Arvelius, R. Lundin, D. Sundkvist, M. Andre, N. Cornilleau-Wehrlin, A. Balogh, S. C. Buchert, H. Reme, J.-A. Sauvaud
Cluster observations of high altitude oxygen outflow burst and associated wave activities (poster)


2003年

開催地:カリフォルニア、USA。

Kazuhiro Adachi, Ryoichi Fujii , Satonori Nozawa, Yasunobu Ogawa, Toshiaki Yamaguchi , Shin-ichiro Oyama , Asgeir Brekke , Chris M. Hall, Marten Blixt and Takayuki Ono
A comparison between energy parameters of precipitating electrons derived with the eiscat uhf radar and a multi-wavelengths photometer.

Takehiko Aso, Chris M. Hall, Masaki Tsutsumi
Dynamics of polar atmospheric tides as revealed in the arctic meteor radar nsmr and its comparison with eiscat and other radars and models

Stephan Buchert, Yasunobu Ogawa, Mats Andre, Andris Vaivads and Malcolm Dunlop
Dynamics and energy balance in the exterior cusp and its ionospheric footprint

Ryoichi Fujii
Coupling of energy and dynamics between the thermosphere, ionosphere and magnetosphere

Ryoichi Fujii
Dependence of electromagnetic and particle energy input to the ionosphere and the electric field on ionospheric conditions

B. Gustavsson, T. Sergienko, T. B. Leyser, M. Kosch, M. T. Rietveld, B. U. E. Braendstroem, F. Honary, S. Marple, A Steen, T. Aso
Estimate of the electron distribution during HF-pumping from optical observations

Chris Hall, Takehiko Aso and Josef Hoffner
ESR for the D-region

Sawako Maeda, Hitoshi Fujiwara and Satonori Nozawa
Effects of the eddy turbulence on the momentum and heat balance of the high-latitude lower thermosphere

S. Nozawa, H. Iwahashi , A. Brekke, C. M. Hall, A. Manson, C. Meek, S. Oyama, Y. Murayama, M. Hagan and R. Fujii
Mean winds and atmospheric tides observed at tromsoe and poker flat

Shin-ichiro Oyama, Chantal Lathuillere, Sawako Maeda and Brenton J. Watkins
Effects of the ion composition ratio on the ion temperature in the polar E-F transition region

Hiroaki Misawa, Fuminori Tsuchiya, Akira Morioka, Yoshizumi Miyoshi and Tetsuro Kondo
Spectrum observation of Jupiter's synchrotron radiation at the frequency from 0.3 to 2.3GHz (poster)

Y. Ogawa, S.C. Buchert, R. Fujii, and S. Nozawa
Height distribution of naturally enhanced ion-acoustic lines in the polar topside ionosphere (poster)

Chris Hall, Takehiko Aso, Alan Manson, Chris Meek, Satonori Nozawa and Masaki Tsutsumi
A comparison of MLT dynamics - Svalbard-Tromso (poster)


2001年

開催地:東京、日本。

D. W. Danskin, A. V. Koustov, T. Ogawa, S. Nozawa and N. Nishitani
On the Factors Controlling the Power of F-Region Coherent Echoes

A. Kadokura, T. Aso, N. Sato, I. Haeggstroem, A. van Eyken, A. Brekke, D. A. Lorentzen, J. Moen, D. Rees, M. Syrjasuo, P. E. Sandholt, K. Hayashi, R. W. Smith, T. Mukai and C. W. Carlson
Coordinated Study on the Electrodynamics Around the Most Poleward Arc System of the Double Oval Configuration in a Substorm with EISCAT, Satellites, and Ground-Based Observations

M. Ishii, S. Oyama, S. Nozawa, R. Fujii, M. Conde, R. W. Smith, M. Krynicki, E. Sagawa, and S. Watari
Neutral Dynamics near Auroras Deduced From Fabry-Perot Interferometers at Ramfjordmoen and Poker Flat

S. Saito, S. C. Buchert, R. Fujii and T. Hagfors
Demagnetization of Electrons in the Presence of Turbulence in the Polar Ionospheric E Region

M. Morooka and M. Mukai
Seasonal and Altitudinal Dependence of the Auroral Particle Acceleration Region Observed by the Akebono Satellite

A. Stroemme, S. Saito, C. La Hoz, U. P. Loevhaug
Observations of Triple Humped Ion Spectra Observed Field-Aligned with the Eiscat Svalbard Radar (Invited)

S. C. Buchert, Y. Ogawa, R. Fujii, A. P. van Eyken
A new type of field-aligned ion flow: up and down at the same time (Invited)

S. Saito, A. Stromme, T. Grydeland, C. LaHoz, T. Hagfors
Investigation of fine structures in the ionosphere by interferometry with the EISCAT Svalbard Radar

P. Kishore, S. P. Namboothiri, K. Igarashi, Y. Murayama and B. J. Watkins
MLT mean winds over Poker Flat, Alaska (65.1 N, 147.5 W) during 1998-2000

Y. Murayama, S. Oyama, W. Singer, and K. Igarashi
Comparative observation of mesospheric waves with MF radars at Poker Flat and Andenes

T. F. Shibata, R. Funane, S. Nozawa and C.M. Hall
AGW Power Variation Around the Height of Mesospheric Wind Reversal Observed with the Tromso MF-Radar

M. Tsutsumi, T. Aso, T. Kawahara, T. Kitahara and A. Nomura
Gravity wave activity in Antarctic mesopause region

K. Kubo, J. Roettger and S. Fukao
PMSE as Potential Indicators for an Increase of Mesopause Temperature and Electron Diffusion during the Bastille-II Solar Proton Event

T. Aso, M. Tsutsumi and C. Hall
First results of NSMR -NIPR / Norway Svalbard Meteor Radar observation in Longyearbyen in early 2001

S. Nozawa
The lower thermosphere/E-region dynamics (Invited talk)

S. Oyama, T. Ogawa, M. Ishii, S. Nozawa, R. Fujii, S. Watari, E. Sagawa, J. Lilensten, and W. Kofman
Relations between GWs and TIDs simultaneously observed with the EISCAT radar and a scanning FPI (630.0 nm)

S. Maeda, S. Nozawa and M. Sugino
Simultaneous measurements of neutral temperatures with EISCAT Tromsoe and Svalbard radars

S. Minami, M. Nishino and M. T. Rietveld
Plan to the Artificial Ionosphere Stimulation by High Power HF Radio Waves at EISCAT

R. Fujii, S. Nozawa, S. C. Buchert and Y. Ogawa
Dependence of the ion upflow on season and geomagnetic disturbances

D .W. Danskin, A. V. Koustov, T. Ogawa, S. Nozawa and N.Nishitani
On the consistency of plasma convection derived from SuperDARN HF observations and EISCAT

S. C. Buchert, S. Saito and R. Fujii and T. Hagfors
Effect of electrojet irregularities on DC current flow and on absorption in riometer observations. (Invited)

K.Sato, M. Tsutsumi, T. Aso, T. Sato, T. Yamanouchi and M. Ejiri
The project of Antarctic Syowa MST radar (PANSY)

M. Kono, R. Fujii, S. Nozawa, Y. Ogawa, M. Sugino, N. Yoshida and M. Yamada
Study on Poleward Moving Electron Concentration Around the Dayside Cusp (poster)

N. Sato, H. Yang, H. Hu, R, Liu, H. Yamagishi, A. S. Yukimatu, M. Kikuchi, Y. Murata, S. Milan, M. Lester and T. Iijima
Transient Traveling Aurora Vortices (TTAVs) in the Dayside Cusp (poster)

T. Ogawa
On the Mechanism for Producing F Region Plasma Density Suppression Around the Cusp (poster)

J. Yasuno and T. F. Shibata
Anisotropic Temperature Distribution of Drifting Ions in the Auroral F-region Derived from the EISCAT Tristatic Observations (poster)

Y. Ogawa, R. Fujii, S. C. Buchert and S. Nozawa
Statistical Study of Ion Upflow and Downflow Observed with the EISCAT Svalbard Radar (poster)

K. Hosokawa, M. Sugino, A. S. Yukimatu, N. Sato and T. Iyemori
Simultaneous Observation of the Subauroral F Region Plasma Irregularities by EISCAT and SuperDARN (poster)

N. Yoshida, H. Fukunishi, H. U. Frey, S. Mende and R. W. Smith
Magnetospheric Source Region of an Intense Duskside Proton Aurora Event Observed in Svalbard on November 26, 2000 (poster)

M. Yamada, S. Watanabe, N. Yoshida, Y. Takahashi, Y. Ogawa and R. Fujii
Dynamics and Photochemistry of N2+ Ion in the Polar Ionosphere (poster)

S. Takeuchi
Electromagnetic Fields Model of Aurora with a Large Vortex Structure (poster)

A. Stroemme, and S. Saito
On the Use of Alternating Code Experiments for the Study of Short Lived Phenomena (poster)

S. Imaida, S. Nozawa, R. Fujii, A. Brekke, and C. M. Hall
Seasonal variation of planetary wave in the polar mesosphere/lower thermosphere (poster)

T. Aso, M. Tsutsumi, M. Kunitake and C. Hall
Analysis of atmospheric tides revealed in the EISCAT TIDE/AGW long run in July 1999 (poster)

K. Igarashi, Y. Murayama and B. Watkins
Observations of tides and planetary waves in the mesosphere and lower thermosphere using MF radar at Poker Flat (65.1 N, 147.5 W) (poster)

K. Adachi, R. Fujii, S. Nozawa, T. Yamaguchi, S. Oyama, A. Brekke and C. M. Hall
Derivation of the energy spectrum of precipitating electrons using EISCAT and multi-wavelengths photometer observations (poster)

M. Sugino, R. Fujii, S. Nozawa, T. Nagatsuma, S. C. Buchert, J. W. Gjerloev and M. Kosch
Study on polar electrodynamics by simultaneous Oersted satellite-EISCAT observations (poster)

K. Takahashi, B. A. Toth, J. V. Olson, and D.-L. Wilkinson
Near-real-time Kp Estimates using Ground Magnetometer Data (poster)


1999年

開催地:ベルニゲローデ、ドイツ。

F. Pitout, H. Opgenoorth, P. Eglitis, A. Viljanen, R. Fujii, S. Buchert, S. Kokubun, R. Nakamura, and P. Newell
Coordinated multi-instrument studies of solar wind forcing of the high latitude dayside ionosphere

S. Saito, S. C. Buchert, S. Nozawa and R. Fujii
On the isotropic electron temperatures in the turbulent polar E-region with EISCAT CP data

H. Kataoka, S. C. Buchert, R. Fujii, and L. Rastaetter
Simulation of auroral ionospheric density structures including transportation effects

M. Sugino, S. C. Buchert, S. Nozawa and R. Fujii
Relationships between the particle precipitation and the electric field

Y. Ogawa, F. Forme and S. C. Buchert
Naturally enhanced ion acoustic lines seen at different wavelengths (observation results)

F. Forme, Y. Ogawa and S. C. Buchert
Parametric decay of beam driven Langmuir waves in an inhomogeneous medium: a weak turbulence approach

S. Saito, F. Forme, S. C. Buchert, S. Nozawa, and R. Fujii
Effects of kappa-distribution on incoherent scatter spectra

S. Maeda and S. Nozawa
Neutral temperature gradients and momentum balance in the dayside summer E-region

S. Nozawa and A. Brekke
Day-to-day variabilities of the auroral E-region neutral wind

T. Shibata
A note on the identification of nonlinear phenomena in the AGW associated ionospheric disturbances

M. Sugino, S. C. Buchert, S. Nozawa, R. Fujii and S. Kokubun
Observations of TIDs above Svalbard in July 1997

T. Aso, C. Hall, A. van Eyken and P. J. S. Williams
Comparative study of EISCAT radar-derived atmospheric tide in the polar lower thermosphere with the numerical modeling ATM2

M. Kunitake and P. J. S. Williams
9.6 hour (2.5 cycles/day) wave observed at ESR in August 1998

S. Oyama, S. Nozawa, S. C. Buchert, R. Fujii, and M. Ishii
Effects of atmospheric oscillations on the field-aligned ion motions in the polar F-region

H. O. Ueda, Y. Omura and H. Matsumoto
Simulation study on stimulated electromagnetic emission in the ionospheric plasma with small-scale density irregularities (poster)

T. Ogawa, S. C. Buuchert, N. Nishitani, N. Sato, and M. Lester
Simultaneous ESR and CUTLASS observations of cusp phenomena on February 1, 1998 (poster)

Y. Ogawa, S. Nozawa, S. C. Buchert, R. Fujii, S. Watanabe, and A. P. Van Eyken
Svalbard and VHF radar observation of ion upflows at different aspect angles (poster)

T. Aso, A. Kadokura, N. Sato, I. Haggstrom, A. van Eyken, A. Brekke, D. A. Lorentzen, J. Moen, D. Rees, M. Syrjasuo, P. E. Sandholt, K. Hayashi, R. W. Smith, T. Mukai, and C. W. Carlson
A conjunctive observation of polar cap aurora with EISCAT radar, satellites and groundbased optics in Longyearbyen (poster)

K. Morise, S. Nozawa, S. Oyama, S. Buchert, R. Fujii, C. Hall, A. Brekke, A. H. Manson, C. E. Meek
Comparison studies of winds derived by the EISCAT UHF radar and the Tromso MF radar (poster)


1997年

開催地:レスター、UK。

R. Fujii, S. Kokubun, N. Sato and T. Hirasawa
Summary of the Japanese EISCAT scientific activities in 1996. (Invited talk)

S. Saito, S. Nozawa, S. C. Buchert, R. Fujii, N. Matuura and A. Brekke
Enhancements of Ti and Te associated with strong electric fields in the polar E-region.

T. Kikuchi, H. Luhr, K. Schlegel, T. Kitamura and H. Tachihara
Instantaneous penetration of DP2 electric fields to low latitudes as observed by EISCAT and ground magnetometers.

M. Ishii, S. Nozawa, S. Oyama and S. Okano
Wind structures near auroral arc deduced from observations of two different wave length emissions with FPI.

S. Nozawa and A. Brekke
Study on E-region neutral wind derived from EISCAT CP data in the quiettime auroral ionosphere.

S. Oyama, T. Imai, S. Nozawa, R. Fujii, S. C. Buchert, M. Ishii, H. Mori, I. Iwamoto, S. Okano, A. Brekke and M. J. Kosch
The simultaneous observations of the thermospheric neutral winds with FPIs and EISCAT radars in January and February, 1997.

H. O. Ueda, Y. Omura and H. Matsumoto
Computer simulations for direct conversion of HF electromagnetic wave into upper hybrid wave on ionospheric heating experiments (poster)

S. Watanabe, N. Yoshida, K. Katsuyama, H. Fukunishi, T. Abe, E. Sagawa, A. W. Yau, R. Fujii and M. Endo
Akebono-EISCAT observations of thermal ion heating and outflow in the topside polar ionospheric region (poster)


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