宙空圏研究グループ - Space and Upper Atmospheric Sciences Group

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UAP seminar


FY2024

Date Speaker Title
2024.04.18 Sachin Alexander Reddy AI in the Ionosphere: Advances, Insights & Prospects for Scientific Discovery
2024.04.25 Bag Tikemani Thermospheric energy budget during geomagnetic storm
2024.05.09 Yoshihiro Tomikawa LODEWAVE (LOng-Duration balloon Experiment of gravity WAVE over Antarctica)
2024.05.16 Dr. Joshua Pettit, NASA/GSFC Modeling the upper atmosphere: Lessons learned from the past, implementations of the present, and creating the future
2024.06.20 Yuri Ito Relationships between the shape of pulsating aurora, the energy of precipitating electrons, and the propagation characteristics of chorus waves
2024.06.27 Kiyoka Murase Toward statistical analysis of internal modulation in pulsating aurorae
2024.07.11 Ryuho Kataoka Status report of AJ1007 project
2024.07.25 Mutsumi K. Ejiri Simultaneous observation of sporadic E and Ca+ layers at Syowa Station
2024.09.05 Tomotaka Tanaka The impact of energetic particle precipitation on the atmosphere: Perspectives from simulation and observation
2024.09.12 Mizuki Fukizawa Feasibility study to estimate the ion velocity field in the F-region from EISCAT_3D radar observations
2024.09.25 Prof. Balan Nanan (Shandong Univ.) Correction and Physical Meaning of the Missed Important Part of the Main Phase of Geomagnetic Storms
2024.09.26 Rihito Yoshida Inertia Gravity Waves over Davis Station: Comparison of ST Radar and ERA5 Reanalysis Data
2024.10.03 Yoshimasa Tanaka Survey of recent 3D reconstruction and visualization techniques
2024.10.10 Shigeru Fujita (ISM) Fundamental physical processes of the solar wind-magnetosphere system in the northward IMF condition (A summary of our research over the last few years)
2024.10.17 Masaki Tsutsumi Network/multi-static meteor echo observations
2024.10.24 Yuki Hayashi (Shinshu Univ.) A preliminary report of the latest large space weather events in 2024 observed with ground- based neutron monitors and muon detectors
2024.10.31 Taishi Hashimoto Technical Basics of Clock in Measurement Applications
2024.11.07 Yasunobu Ogawa Study of long-term ionospheric variations based on Tromsø Ionosonde and EISCAT radar data
2024.11.14 Masayoshi Kozai (ROIS-DS) Studies toward the polar conjugate observations of cosmic-ray muons

FY2023

Date Speaker Title
2023.04.20 Ryuho Kataoka Emulating the ionospheric outputs of a global MHD simulation by a machine learning technique
2023.04.27 Yoshihiro Tomikawa Preparations for LODEWAVE Phase II
2023.05.11 Wehmeyer Jonna Marie Development of a numerical scheme strictly satisfying Gauss's laws for the full two-fluid plasma model
2023.06.01 Masayohi Kozai Cosmic-ray anisotropy and interplanetary space
2023.06.22 Taishi Hashimoto Antenna Array Calibration in EISCAT_3D
2023.06.29 Akira Sessai Yukimatsu SuperDARN recent update
2023.07.06 Kiyoka Murase Atmospheric ionization impact of EMIC-wave driven energetic electron precipitations
2023.07.20 Yasunobu Ogawa Study of upper atmosphere cooling using EISCAT and ionosonde data
2023.07.27 Mizuki Fukizawa Feasibility study of ionospheric ion velocity reconstruction method for monostatic and multi-beam EISCAT_3D radar observation
2023.08.03 Rihito Yoshida Spectra and momentum flux of inertia gravity waves over Syowa Station ~Comparison between the PANSY radar and the ERA5 reanalysis~
2023.08.24 Mitsumu Ejiri Relationship between metallic ion layer and sporadic E layer in the polar region
2023.08.31 Bag Tikemani Does Solar Proton Event affect Thermospheric NO cooling emission?
2023.09.07 Tomotaka Tanaka Effects of mirror force for precipitating electrons on altitude profiles of electron density with ELFIN and EISCAT observations.
2023.10.12 Takanori Nishiyama Temperature diagnostics for the upper mesosphere and lower thermosphere region estimated by the NIRAS-2 and the NIRAC at Longyearbyen (78°N, 16°E)
2023.10.19 Ryuho Kataoka Observation data of polar-cap auroral imagers at Syowa Station
2023.10.26 Masaki Tsutsumi A meteor wind observation technique using medium frequency and its application to existing radar systems in the northern Europe and Japan.
2023.11.30 Akira Kadokura Introduction of WEB page of Data Center for Aurora
2023.12.21 Shigeru Fujita (ISM) Understanding the interaction between the solar wind system and the magnetosphere-ionosphere system as an interaction between the skeletal magnetic field structure and plasma dynamics
2024.01.11 Mitsumu Ejiri The responses of the sodium layer to the Geminid meteor shower observed with a resonance scattering lidar
2024.01.18 Mizuki Fukizawa Feasibility study to estimate the ion velocity field in the F region from EISCAT_3D radar observations
2024.01.25 Masaki Okada Current Status of VLF observation at West Ongul Island
2024.02.08 Tomotaka Tanaka 1.How effective is the mirror force for the altitude profile of electron density?
2.Review of parallel electric field in the magnetosphere.
2024.02.15 Takanori Nishiyama Thermoshperic He variations associated with two storms on February and March, 2023: the NIRAS-2 observations at Longyearbyen, Svalbard.

FY2022

Date Speaker Title
2022.04.21 小財正義 (M. Kozai, PEDSC/ROIS)
Solar modulation of galactic cosmic rays observed with the ground-based detectors
2022.04.28 冨川喜弘 (Y. Tomikawa)
Preliminary results of LODEWAVE
2022.05.12 吹澤瑞貴 (M. Fukizawa)
Generation mechanism of low-energy electron precipitation in pulsating aurora elucidated with Arase satellite, ground-based optical and radar observations, and computed tomography
2022.06.02 片岡龍峰 (R. Kataoka)
The first year of auroraXcosmic project (AJ1007)
2022.06.09 田中良昌 (Y. Tanaka)
My recent activities at PEDSC
2022.06.16 吉田理人 (R. Yoshida)
Sporadic gravity wave events and intermittency over Syowa Station ~Comparison between the PANSY radar and the ERA5 reanalysis~
2022.06.23 行松彰 (A. Yukimatsu)
SuperDARN recent update
2022.06.30 江尻省 (M. Ejiri)
A possible cause of a quasi-periodic variation of Ca+ density observed at Syowa Station
2022.07.07 門倉昭 (A. Kadokura)
Electron and proton auroral activities observed at Syowa Station during 2009-2022
2022.07.14 小川泰信 (Y. Ogawa)
Statistical study of high energy electron precipitation based on Arase satellite - EISCAT collaborative observation data
2022.07.21 岡田雅樹 (M. Okada)
Upper Atmosphere EM Environment Monitoring at West Ongul Island
2022.07.28 藤田茂 (S. Fujita, ISM/ROIS)
Interaction between the magnetic topology and the plasma dynamics in the solar wind-magnetosphere system (1) The preliminary results for the stationary solar wind condition
2022.09.01 西山尚典 (T. Nishiyama)
A new spectroscopic and imaging observation of SWIR aurora and airglow (1.05-1.35 μm) at Longyearbyen with EISCAT Svalbard radar
2022.09.08 B. Tikemani (JSPS international fellow)
TIMED-SABER satellite observations of thermospheric Nitric Oxide radiative cooling emission
2022.09.22 堤雅基 (M. Tsutsumi)
Gravity wave activities in a wide height region of 60-110km over Syowa station, Antarctic
2022.09.29 村瀬清華 (K. Murase)
1) Evaluation of atmospheric ionization by solar X-rays, solar protons, and radiation belt electrons in September 2017 space weather event
2) Report on trip to Scandinavia in August
2022.10.06 片岡龍峰 (R. Kataoka)
Clustering occurrence of red sign events in Japanese history
2022.10.13 冨川喜弘 (Y. Tomikawa)
Balloon-borne water vapor observation at Syowa Station
2022.10.20 1st Speaker: Prof. William E. Ward, University of New Brunswick, Canada
Field Widened Michelson Interferometry: New implementations
2022.10.20 2nd Speaker: Gabriel Giongo, Instituto Nacional de Pesquisas Espaciais (INPE), Brazil
Overview of gravity wave observations in the Brazilian Antarctic Station Comandante Ferraz
2022.10.27 岡田雅樹 (M. Okada)
Current situation of Upper Atmosphere Observation at West-Ongul Island of JARE63 and Operation plan of JARE64
2022.11.24 橋本大志 (T. Hashimoto)
Project for Training Experts in Statistical Sciences - An introduction as a participant
2022.12.08 行松彰 (A. Yukimatsu) SuperDARN recent update
2022.12.15 江尻省 (M. Ejiri)
Current status of development of a Ca/Ca+ resonance scattering lidar
2022.12.22 田中友啓 (T. Tanaka)
Simultaneous Reimei satellite and EISCAT radar observations : Effects of mirror force on ionization profiles
2023.01.12 門倉昭 (A. Kadokura)
Introduction of some recent research papers on substorm
2023.01.19 堤雅基 (M. Tsutsumi)
Wave structures with a periodicity of about 15 hrs during mid-summer at northern high latitude MLT region
2023.01.26 村瀬清華 (K. Murase)
Review of the quantitative connection between energetic particle precipitation and atmospheric variabilities
2023.01.26 Dr. Jack C. Wang, NASA Goddard Space Flight Center
Circulation at the edge of the space: how the lower thermospheric circulation couples the lower and upper atmosphere
2023.02.02 西山尚典 (T. Nishiyama)
Initial results of NIRAS-2 and NIRAC installed at KHO/UNIS, Longyearbyen, Svalbard (78.1 N, 16.0 E)
2023.02.09 B. Tikemani (JSPS international fellow)
Some implications of thermospheric infrared radiative emissions
2023.02.16 吹澤瑞貴 (M. Fukizawa)
Reconstruction of the three-dimensional ionospheric conductivity using Aurora Computed Tomography
2023.03.02 小川泰信 (Y. Ogawa)
Current status and future prospects of the EISCAT_3D project
2023.03.16 吉田理人 (R. Yosida)
Inertia gravity waves over Davis Station ~Comparison between the ST radar and the ERA5 reanalysis~

FY2021

Date Speaker Title
2021.04.15 堤雅基 (M. Tsutumi)
Preliminary results of PANSY/meteor wind observations
2021.04.22 村瀬清華 (K. Murase)
Mesospheric ionization due to energetic particle precipitation
2021.05.06 吉田理人 (R. Yoshida)
Sporadic, large gravity wave events over Syowa Station in austral summer -Comparison between the PANSY radar and the ERA5 reanalysis-
2021.05.13 冨川喜弘 (Y. Tomikawa)
Momentum budget of the semiannual oscillation around the tropical stratopause in the reanalysis data
2021.05.20 岡田雅樹 (M. Okada) S
yowa Satellite Link Upgrade Plan and Syowa Network renewal Plan
2021.05.27 海老原祐輔 (Y. Ebihara, RISH/Kyoto Univ., invited)
Evolution of auroral substorm and energy conversion from solar wind to polar ionosphere: A view from global MHD simulation
2021.06.10 橋本大志 (T. Hashimoto)
Progress report on software development of EISCAT_3D
2021.06.17 小川泰信 (Y. Ogawa)
ERG-EISCAT coordinated observations and their scientific products
2021.06.24 片岡龍峰 (R. Kataoka)
1. Auroral zone in the past 3000 years, 2. Forecasting substorms and magnetic storms by machine learning technique
2021.07.01 江尻省 (M. Ejiri)
Characteristics of Ca+ thin layers observed at Syowa Station
2021.07.08 水野亮 (A. Mizuno, ISEE/Nagoya Univ., invited)
Observations of minor constituents in the middle atmosphere at Syowa station by the old and the new mm-wave spectrometer – Study of the influence of solar activity on atmospheric composition –
2021.07.15 門倉昭 (A. Kadokura)
Auroral activity during the solar cycle 24: Observations at Syowa Station, Antarctica
2021.07.29 田中良昌 (Y. Tanaka)
Spectral riometer observation at Syowa Station, Antarctica, during the JARE-63
2021.09.09 西山尚典 (T. Nishiyama)
Sporadic Fe layer event based on wind shear theory: numerical simulation and simultaneous observation of Fe density and wind at Syowa station (69.0°S, 39.6°E)
2021.09.16 藤田茂 (S. Fujita, The Institute of Statistical Mathematics, invited)
Detailed analysis of the MHD response of the magnetosphere-ionosphere system to the sudden solar wind impulse
2021.09.30 堤雅基 (M. Tsutsumi)
Estimation of horizontal wind structure in the Antarctic MLT region based on MF radar
2021.10.07 片岡龍峰 (R. Kataoka)
Reconstructing solar wind profiles associated with extreme magnetic storms: A machine learning approach
2021.10.14 吉田理人 (R. Yoshida)
Characteristics and reproducibility of inertia gravity waves over Syowa Station ~Comparison between the PANSY radar and the ERA5 reanalysis~
2021.10.21 冨川喜弘 (Y. Tomikawa) Current status of LODEWAVE
2021.10.28 尾崎光紀 (M. Ozaki, Kanazawa Univ., invited)
Spatiotemporal and energy characteristics of wave-particle interaction regions deduced from flash aurora and isolated proton aurora
2021.11.25 橋本大志 (T. Hashimoto)
Upper-atmosphere Meteorological Observation using Air Traffic Surveillance Broadcast via Radio Communication
2021.12.02 村瀬清華 (K. Murase)
Energetic electron precipitation during substorms: Statistical investigation of the ionization & implication from MHD simulation
2021.12.09 岡田雅樹 (M. Okada)
Power Monitoring test of West Ongul Island UAP Monitoring Site using 920MHz-band LoRa Protocol
2021.12.16 小川泰信 (Y. Ogawa)
Thermospheric Joule heating rate as measured by the EISCAT radar system
2021.12.23 行松彰 (A. Yukimatsu)
Recent status of SuperDARN
2022.01.06 門倉昭 (A. Kadokura)
Electron and proton auroral substorm observed with the SPM at Syowa Station
2022.01.13 江尻省 (M. Ejiri)
Development plan of a resonance scattering lidar for simultaneous and common-volume observation of meteoric metal atom and ion
2022.01.20 大山伸一郎 (S. Oyama, ISEE/Nagoya Univ., invited)
SDI-3D project
2022.01.26 田中良昌 (Y. Tanaka)
Data analysis flow of auroral computed tomography considering auroral type
2022.02.03 行松彰 (A. Yukimatsu)
JARE phase X framework and issues
2022.02.10 村瀬清華 (K. Murase)
Review of the energetic particle precipitation associated with geomagnetic storms
2022.02.17 西山尚典 (T. Nishiyama) Current status of NIRAS-2 and a new SWIR imager
2022.03.03 堤雅基 (M. Tsutsumi)
Recent progress on meteor wind observations at Syowa station