放射線帯観測に特化した波動観測戦略の立案とＥＲＧ搭載用波動観測ソフトウェアの開発

• Project/Area Number: 14J02108
• Research Category: Grant-in-Aid for JSPS Fellows
• Allocation Type: Single-year Grants
• Section: 国内
• Research Field: Space and upper atmospheric physics
• Research Institution: Kanazawa University
• Principal Investigator: 松田 昇也 金沢大学, 総合メディア基盤センター, 特別研究員(PD)
• Project Period (FY): 2014-04-25 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥2,500,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥300,000); Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2014: ¥1,200,000 (Direct Cost: ¥1,200,000)
• Keywords: ERG衛星 / プラズマ波動 / 内部磁気圏 / EMIC波動 / プラズマ圏 / あけぼの衛星 / イオン組成比

Outline of Annual Research Achievements

本研究では，2016年打ち上げ予定のERG衛星に搭載する，プラズマ波動観測器PWEの機上処理ソフトウェア開発を目標としている．前年度までの検討を踏まえ，本年度は実際の搭載機器への実装・試験作業と，性能評価を行った．PWEのうち20 kHz以下のスペクトル観測を行うOFA(Onboard Frequency Analyzer)では，24時間の連続観測において電磁界の位相情報を含めたデータの取得を目標としている．連続観測においては観測データ処理が規定時間内に毎回収まっていることと，地上への伝送容量が規定を超えないことが強く要求される．前者は，処理手順の検討と複数回に及ぶ検証試験を重ね，サイエンスデータとしての品質を損なわずに目標値を達成していることを確認した．後者は，これまでの衛星観測データを用いた解析を元に，地上へ伝送するデータの形式や分解能を検討し，規定値を満足できている．また，本年度は衛星で観測されたサイエンスデータの蓄積および解析環境の整備にも着手できた．

Research Progress Status

27年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

27年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] アイオワ大学(米国)
• [Journal Article] Variation in crossover frequency of EMIC waves in plasmasphere estimated from ion cyclotron whistler waves observed by Van Allen Probe A (2016)
  • Author(s): Matsuda, S., Y. Kasahara, and C. A. Kletzing
  • Journal Title: Geophysical Research Letters Volume: 43 Issue: 1 Pages: 28-34
  • DOI: 10.1002/2015gl066893
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] M/Q=2 ion distribution in the inner magnetosphere estimated from ion cyclotron whistler waves observed by the Akebono satellite (2015)
  • Author(s): Matsuda, S., Y. Kasahara, and Y. Goto
  • Journal Title: J. Geophys. Res. Space Physics Volume: 120 Issue: 4 Pages: 2783-2795
  • DOI: 10.1002/2014ja020972
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Electromagnetic ion cyclotron waves suggesting minor ion existence in the inner magnetosphere observed by the Akebono satellite (2014)
  • Author(s): Matsuda, S., Y. Kasahara, and Y. Goto
  • Journal Title: J. Geophys. Res. Space Physics Volume: 119 Issue: 6 Pages: 4348-4357
  • DOI: 10.1002/2013ja019370
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] High-altitude M/Q=2 ion cyclotron whistlers in the inner magnetosphere observed by the Akebono Satellite (2014)
  • Author(s): Matsuda, S., Y. Kasahara, and Y. Goto
  • Journal Title: Geophys. Res. Lett. Volume: 41 Issue: 11 Pages: 3759-3765
  • DOI: 10.1002/2014gl060459
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Presentation] 雷起源EMIC波動解析による下部プラズマ圏の重イオン分布推定 (2016)
  • Author(s): 松田 昇也, 笠原 禎也, Craig A. Kletzing
  • Organizer: 2015年度名古屋大学宇宙地球環境研究所研究集会「若手研究者のためのジオスペース研究集会」
  • Place of Presentation: 名古屋
  • Year and Date: 2016-03-28
• [Presentation] Van Allen Probesのプラズマ波動観測に基づく地球内部磁気圏の重イオン分布推定 (2016)
  • Author(s): 松田 昇也, 笠原 禎也, Craig A. Kletzing
  • Organizer: 2015年度名古屋大学宇宙地球環境研究所研究集会「太陽惑星系宇宙プラズマ中の重イオンに関する研究集会」
  • Place of Presentation: 名古屋
  • Year and Date: 2016-01-27
• [Presentation] Plasma Diagnostics in Plasmasphere by Using Ion Cyclotron Whistlers (2016)
  • Author(s): Shoya Matsuda, Yoshiya Kasahara, Craig A. Kletzing
  • Organizer: International Symposium PSTEP-1
  • Place of Presentation: 名古屋
  • Year and Date: 2016-01-13
  • Int'l Joint Research
• [Presentation] プラズマ波動観測データを用いたプラズマ圏のイオン組成推定法 (2015)
  • Author(s): 松田 昇也
  • Organizer: 第301回生存圏シンポジウム「宇宙プラズマ波動研究会」
  • Place of Presentation: 富山
  • Year and Date: 2015-12-28
  • Invited
• [Presentation] Ion Cyclotron Whistlers Observed by the Van Allen Probe A (2015)
  • Author(s): Matsuda, S., Y., Kasahara, Craig A. Kletzing
  • Organizer: AGU Fall Meeting 2015
  • Place of Presentation: San Francisco
  • Year and Date: 2015-12-14
  • Int'l Joint Research
• [Presentation] Observation strategy of the plasma wave experiment (PWE) onboard ERG (2015)
  • Author(s): Yoshiya Kasahara，Yasumasa Kasaba，Hirotsugu Kojima，Yoshizumi Miyoshi，Tomohiko Imachi，Fuminori Tsuchiya，Keigo Ishisaka，Mitsunori Ozaki，Satoshi Yagitani，Atsushi Kumamoto，Mitsuru Hikishima，Yuto Katoh，Kazushi Asamura，Iku Shinohara，Shoya Matsuda，Mamoru Ota，Satoshi Kurita，Naoko Takahashi
  • Organizer: 第138回 SGEPSS総会および講演会
  • Place of Presentation: 東京
  • Year and Date: 2015-10-31
• [Presentation] Cold heavy ion composition in the deep plasmasphere estimated from ion cyclotron whistlers observed by the Van Allen Probes (2015)
  • Author(s): Shoya Matsuda，Yoshiya Kasahara，Craig A. Kletzing
  • Organizer: 第138回 SGEPSS総会および講演会
  • Place of Presentation: 東京
  • Year and Date: 2015-10-31
• [Presentation] Study on Inner Magnetospheric Ion Cyclotron Whistler Waves as a Novel Plasma Diagnostics Tool (2015)
  • Author(s): Matsuda, S., Y., Kasahara, Y., Goto
  • Organizer: AOGS 12th Annual Meeting
  • Place of Presentation: Singapore
  • Year and Date: 2015-08-02
  • Int'l Joint Research / Invited
• [Presentation] Cold M/Q=2 ion distribution in the inner magnetosphere estimated from lightning-induced EMIC waves observed by Akebono (2015)
  • Author(s): Matsuda, S., Y. Kasahara, Y. Goto
  • Organizer: JpGU Meeting 2015
  • Place of Presentation: Makuhari
  • Year and Date: 2015-05-26
• [Presentation] Cold M/Q=2 ion distribution in the inner magnetosphere estimated from lightning-induced EMIC waves observed by Akebono (2015)
  • Author(s): Matsuda, S., Y., Kasahara, Y., Goto
  • Organizer: JpGU Meeting 2015
  • Place of Presentation: 幕張
  • Year and Date: 2015-05-24
  • Int'l Joint Research
• [Presentation] Statistical analysis of plasmaspheric EMIC waves (2015)
  • Author(s): Kato, Y, Y., Miyoshi, K., Sakaguchi, Y., Kasahara, S., Matsuda, K., Keika, M., Shoji, N., Kitamura, S., Hasegawa, A., Kumamoto, K., Shiokawa
  • Organizer: JpGU Meeting 2015
  • Place of Presentation: 幕張
  • Year and Date: 2015-05-24
  • Int'l Joint Research
• [Presentation] Diagnostics of multicomponent plasma using EMIC waves observed by Akebono (2015)
  • Author(s): Matsuda, S., Y. Kasahara, Y. Goto
  • Organizer: 内部磁気圏研究集会
  • Place of Presentation: 名古屋
  • Year and Date: 2015-03-18 – 2015-03-19
  • Invited
• [Presentation] Diagnostics of multicomponent plasma using EMIC waves observed by Akebono (2015)
  • Author(s): Matsuda, S., Y. Kasahara, Y. Goto
  • Organizer: 博士課程進学者・博士号取得者による合同セミナー
  • Place of Presentation: 名古屋
  • Year and Date: 2015-02-24
• [Presentation] M/Q=2 ion distribution in the inner magnetosphere estimated from ion cyclotron whistler waves observed by the Akebono satellite (2015)
  • Author(s): Matsuda, S., Y. Kasahara, Y. Goto
  • Organizer: STEL研究集会「太陽地球系宇宙プラズマにおける重イオンの輸送・加熱・加速過程」
  • Place of Presentation: 名古屋
  • Year and Date: 2015-01-28 – 2015-01-29
• [Presentation] Cold Ion Distributions Derived from Lightning-induced EMIC Waves Observed by AKEBONO (2014)
  • Author(s): 松田 昇也, 笠原 禎也, 後藤 由貴
  • Organizer: EMIC解析ワークショップ
  • Place of Presentation: 名古屋
  • Year and Date: 2014-09-22
• [Presentation] Ion Cyclotron Whistlers Related to Heavy Minor Ions Observed by the Akebono Satellite and Their Distribution in the Inner Magnetosphere (2014)
  • Author(s): Matsuda, S., Y. Kasahara, Y. Goto
  • Organizer: 2014 URSI General Assembly and Scientific Symposium
  • Place of Presentation: Beijing
  • Year and Date: 2014-08-22
• [Presentation] 多様な観測データ利用活性化を実現する解析環境の一提案 (2014)
  • Author(s): 笠原 禎也，馬渕 嵩大，宮崎 大夢，大池 悠太，松田 昇也，高田 良宏，松平 拓也，後藤由貴
  • Organizer: 平成26年度IUGONET中間報告会
  • Place of Presentation: 東京
  • Year and Date: 2014-08-18 – 2014-08-19
• [Presentation] Statistical Analysis of M/Q=2 Ion Cyclotron Whistlers Observed by Akebono (2014)
  • Author(s): Matsuda, S., Y. Kasahara, Y. Goto
  • Organizer: AOGS 11th Annual Meeting
  • Place of Presentation: 札幌
  • Year and Date: 2014-07-29
• [Presentation] あけぼので観測されたM/Q=2イオンサイクロトロンホイスラの解析 (2014)
  • Author(s): 松田 昇也, 笠原 禎也, 後藤 由貴
  • Organizer: 日本地球惑星科学連合 連合大会 2014年大会
  • Place of Presentation: 幕張
  • Year and Date: 2014-04-30