Spatio-temporal variations of mass distribution on the Earth revealed from fluctuations of satellite trajectories

• Project/Area Number: 18K11632
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 63010:Environmental dynamic analysis-related
• Research Institution: Geospatial Information Authority of Japan (Geography and Crustal Dynamics Research Center)
• Principal Investigator: Matsuo Koji 国土地理院(地理地殻活動研究センター), その他部局等, 主任研究官 (80722800)
• Co-Investigator(Kenkyū-buntansha): 大坪 俊通 一橋大学, 大学院社会学研究科, 教授 (70358943)
• Project Period (FY): 2018-04-01 – 2023-03-31
• Project Status: Completed (Fiscal Year 2022)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: 宇宙測地学 / 衛星レーザ測距 / 重力変化 / 質量収支 / 気候変動 / Satellite Laser Ranging / 衛星軌道決定 / 重力観測 / 全球質量収支 / ジオイド / 地球質量構造 / 物理測地学 / 衛星重力観測 / 環境変動 / 極域科学 / 海洋科学 / 水文学 / 重力変動

Outline of Final Research Achievements

We attempted to track temporal changes in water transfers (mass balance) traded between the land, ocean, and cryosphere by inferring low-degree gravity field variations of the Earth from changes in satellite orbits observed by satellite laser ranging (SLR). Based on our SLR analysis, we confirmed the following signals of linear mass changes over the period 2002-2017; (1) mass loss associated with the loss of the Greenland ice sheet, (2) mass loss associated with the loss of the West Antarctic ice sheet, (3) mass increase associated with increased snow cover in East Antarctica, (4) increase in ocean mass, and (5) mass increase associated with glacial isostatic adjustment in the North American continent. These results were consistent with those based on GRACE gravimetry and geophysical models, indicating that SLR can be fully utilized to track temporal changes in the global mass balance.

Academic Significance and Societal Importance of the Research Achievements

SLR衛星は一般的な人工衛星よりも堅牢性が高く運用寿命が長いという強みを持つ。本研究成果は、気候変動等に伴う全球質量収支を長期的かつ安定的に監視することを可能とするもので、学術的にも社会的にも高い意義を持つと言える。

Research Products

• [Int'l Joint Research] Technischen Universitaet Muenchen(ドイツ)
• [Int'l Joint Research] The University of Texas at Austin(米国)
• [Int'l Joint Research] Centre national d'etudes spatiales(フランス)
• [Journal Article] Demonstration of deep-space synchronous two-way laser ranging with a laser transponder aboard Hayabusa2 (2023)
  • Author(s): Noda Hirotomo、Senshu Hiroki、Otsubo Toshimichi、Takeuchi Hiroshi、Courde Clement、Kunimori Hiroo、Moore Christopher、Schreiber Ulrich、Ogawa Naoko、Saiki Takanao、Takei Yuto、Aimar Mourad、Chabe Julien、Eckl Johann、Kamata Shun'ichi、et al.
  • Journal Title: Advances in Space Research Volume: 71 Issue: 10 Pages: 4196-4209
  • DOI: 10.1016/j.asr.2022.12.057
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Along-strike distribution of seismicity and large slow slip correlated with gravity at the Nankai Trough (2022)
  • Author(s): Mitsui Yuta、Uehara Keiji、Kosugi Issei、Matsuo Koji
  • Journal Title: Earth and Planetary Science Letters Volume: 598 Pages: 117824-117824
  • DOI: 10.1016/j.epsl.2022.117824
  • Peer Reviewed
• [Journal Article] Colorado geoid computation experiment: overview and summary (2021)
  • Author(s): Wang Yan Ming、Sanchez Laura、Agren Jonas、Huang Jianliang、Forsberg Rene、...、Matsuo Koji, et al.
  • Journal Title: Journal of Geodesy Volume: 95 Issue: 12 Pages: 1-21
  • DOI: 10.1007/s00190-021-01567-9
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Report on the Scientific Assembly of International Association of Geodesy (2021)
  • Author(s): 古屋 正人、宮原 伐折羅、渡邉 俊一、日置 幸介、大坪 俊通、福田 洋一、市川 隆一、田中 愛幸、松尾 功二
  • Journal Title: Journal of the Geodetic Society of Japan Volume: 67 Issue: 0 Pages: 40-45
  • DOI: 10.11366/sokuchi.67.40
  • NAID: 130008128651
  • ISSN: 0038-0830, 2185-517X
  • Peer Reviewed
• [Journal Article] Accelerated continental‐scale snowmelt and ecohydrological impacts in the four largest Siberian river basins in response to spring warming (2020)
  • Author(s): Suzuki Kazuyoshi、Hiyama Tetsuya、Matsuo Koji、Ichii Kazuhito、Iijima Yoshihiro、Yamazaki Dai
  • Journal Title: Hydrological Processes Volume: 34 Issue: 19 Pages: 3867-3881
  • DOI: 10.1002/hyp.13844
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Dynamic precise orbit determination of Hayabusa2 using laser altimeter (LIDAR) and image tracking data sets (2020)
  • Author(s): Yamamoto, K., Otsubo, T., Matsumoto, K., Noda, H., Namiki, N., Takeuchi, H., Ikeda, H., Yoshikawa, M., Yamamoto, Y., Senshu, H., Mizuno, T., Hirata, N. et al.
  • Journal Title: Earth, Planets and Space Volume: 72 Issue: 1 Pages: 85-85
  • DOI: 10.1186/s40623-020-01213-2
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Geodetic VLBI for precise orbit determination of Earth satellites: a simulation study (2020)
  • Author(s): Klopotek Grzegorz、Hobiger Thomas、Haas R?diger、Otsubo Toshimichi
  • Journal Title: Journal of Geodesy Volume: 94 Issue: 6 Pages: 1-26
  • DOI: 10.1007/s00190-020-01381-9
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Quanta Photogrammetry of Experimental Geodetic Satellite for remote detection of micrometeoroid and orbital debris impacts (2020)
  • Author(s): Kucharski Daniel、Kirchner Georg、Otsubo Toshimichi、Flegel Sven K.、Kunimori Hiroo、Jah Moriba K.、Koidl Franz、Bennett James C.、Steindorfer Michael、Wang Peiyuan
  • Journal Title: Acta Astronautica Volume: 174 Pages: 24-31
  • DOI: 10.1016/j.actaastro.2020.04.042
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Improving Hayabusa2 trajectory by combining LIDAR data and a shape model (2020)
  • Author(s): Matsumoto, K., Noda, H., Ishihara, Y., Senshu, H., Yamamoto, K., Hirata, N., Hirata, N., Namiki, N., Otsubo, T., Higuchi, A., Watanabe, S., Ikeda, H., Mizuno, T., Yamada, R., Araki, H., Abe, S., Yoshida, F., Sasaki, S., et al
  • Journal Title: Icarus Volume: 338 Pages: 113574-113574
  • DOI: 10.1016/j.icarus.2019.113574
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Refinement of a gravimetric geoid model for Japan using GOCE and an updated regional gravity field model (2020)
  • Author(s): Matsuo Koji、Kuroishi Yuki
  • Journal Title: Earth, Planets and Space Volume: 72 Issue: 1 Pages: 1-18
  • DOI: 10.1186/s40623-020-01158-6
  • Peer Reviewed / Open Access
• [Journal Article] GRACEによる陸水貯留量変動推定と水文科学分野での応用 (2020)
  • Author(s): 鈴木和良, 松尾功二
  • Journal Title: 日本水文科学会誌 Volume: 50(2) Pages: 1-15
  • NAID: 130007897381
  • Peer Reviewed
• [Journal Article] Upgraded modelling for the determination of centre of mass corrections of geodetic SLR satellites: impact on key parameters of the terrestrial reference frame (2019)
  • Author(s): Rodríguez José、Appleby Graham、Otsubo Toshimichi
  • Journal Title: Journal of Geodesy Volume: 93 Issue: 12 Pages: 2553-2568
  • DOI: 10.1007/s00190-019-01315-0
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Hypertemporal photometric measurement of spaceborne mirrors specular reflectivity for Laser Time Transfer link model (2019)
  • Author(s): Kucharski Daniel、Kirchner Georg、Otsubo Toshimichi、Kunimori Hiroo、Jah Moriba K.、Koidl Franz、Bennett James C.、Lim Hyung-Chul、Wang Peiyuan、Steindorfer Michael、So?nica Krzysztof
  • Journal Title: Advances in Space Research Volume: 64 Issue: 4 Pages: 957-963
  • DOI: 10.1016/j.asr.2019.05.030
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Satellite laser ranging at 100 kHz pulse repetition rate (2019)
  • Author(s): Hampf Daniel、Schafer Ewan、Sproll Fabian、Otsubo Toshimichi、Wagner Paul、Riede Wolfgang
  • Journal Title: CEAS Space Journal Volume: 11 Issue: 4 Pages: 363-370
  • DOI: 10.1007/s12567-019-00247-x
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Rapid response quality control service for the laser ranging tracking network (2019)
  • Author(s): Otsubo Toshimichi、Muller Horst、Pavlis Erricos C.、Torrence Mark H.、Thaller Daniela、Glotov Vladimir D.、Wang Xiaoya、So?nica Krzysztof、Meyer Ulrich、Wilkinson Matthew J.
  • Journal Title: Journal of Geodesy Volume: 93 Issue: 11 Pages: 2335-2344
  • DOI: 10.1007/s00190-018-1197-0
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Time-varying solar radiation pressure on Ajisai in comparison with LAGEOS satellites (2019)
  • Author(s): Hattori Akihisa、Otsubo Toshimichi
  • Journal Title: Advances in Space Research Volume: 63 Issue: 1 Pages: 63-72
  • DOI: 10.1016/j.asr.2018.08.010
  • Peer Reviewed
• [Journal Article] Satellite Laser Ranging as one of Global Geodetic Techniques: Current Status and Future Prospective (2018)
  • Author(s): 大坪 俊通, 横田 裕輔
  • Journal Title: Journal of the Geodetic Society of Japan Volume: 63 Issue: 2 Pages: 75-79
  • DOI: 10.11366/sokuchi.63.75
  • NAID: 130006413057
  • ISSN: 0038-0830, 2185-517X
  • Peer Reviewed
• [Presentation] Current status of a gravimetric geoid model for Japan (2022)
  • Author(s): K. Matsuo
  • Organizer: The Second Asia Pacific geoid workshop for IAG-SC2.4
  • Int'l Joint Research
• [Presentation] 海洋残差地形モデルの導入による沿岸ジオイドの精密化 (2022)
  • Author(s): 松尾 功二
  • Organizer: 日本測地学会第138回講演会
• [Presentation] 航空重力データと海洋残差地形モデルの導入による沿岸域ジオイド決定の高精度化の試み (2022)
  • Author(s): 松尾 功二
  • Organizer: 日本地球惑星科学連合2022年大会
• [Presentation] SLR 非標準衛星の精密軌道決定：(2) 地球重力場決定への効果 (2022)
  • Author(s): 松尾 功二、大坪 俊通
  • Organizer: 日本地球惑星科学連合2022年大会
• [Presentation] Report from GGOS Japan (2022)
  • Author(s): T. Otsubo, B. Miyahara, Y. Yokot
  • Organizer: GGOS Days 2022
  • Int'l Joint Research
• [Presentation] Systematic range residuals 2021-2022 (2022)
  • Author(s): T. Otsubo
  • Organizer: 22nd International Workshop on Laser Ranging
  • Int'l Joint Research
• [Presentation] Development of Omni-SLR System: (2) Tracking subsystem (2022)
  • Author(s): T. Otsubo, M. Kobayashi, H. Araki, Y. Yokota, T. Matsumoto, Tetsu Takashima
  • Organizer: 22nd International Workshop on Laser Ranging
  • Int'l Joint Research
• [Presentation] System design and concept of small-size, low-cost, multi-purpose Omni-SLR System (2022)
  • Author(s): T. Otsubo, H. Araki, Y. Yokota, T. Matsumoto, M. Kobayashi, K. Kouno, K. Doi, Y. Aoyama, T. Takashima, N. Yanagimoto
  • Organizer: 22nd International Workshop on Laser Ranging
  • Int'l Joint Research
• [Presentation] 小型・低価格 Omni-SLR 組み上げ試験 (1) 概要と追尾系 (2022)
  • Author(s): 大坪 俊通，荒木 博志，横田 裕輔，松本 岳大，小林 美穂子，河野 賢治，土井 浩一郎，青山 雄一，高嶋 徹，柳本 教朝
  • Organizer: 日本測地学会第138回講演会
• [Presentation] SLR 非標準衛星の精密軌道決定 (1) 衛星形状モデルの導入 (2022)
  • Author(s): 大坪 俊通，松尾 功二
  • Organizer: 日本地球惑星科学連合2022年大会
• [Presentation] 小型・低価格 Omni-SLR システムの開発：追尾系と室内ターゲット測距 (2022)
  • Author(s): 大坪 俊通，荒木 博志，横田 裕輔，松本 岳大，土井 浩一郎，青山 雄一，國森 裕生，柳本 教朝，高嶋 徹，亀岡 航，小林 美穂子
  • Organizer: 日本地球惑星科学連合2022年大会
• [Presentation] グローバル宇宙測地技術としての衛星レーザー測距 (2022)
  • Author(s): 大坪 俊通
  • Organizer: レーザー学会学術講演会第42回年次大会
  • Invited
• [Presentation] Impact of topographic density variations on subsurface structure estimation by gravity inversion- a case study in Aso Caldera, Japan (2021)
  • Author(s): Koji Matsuo, Tomokazu Kobayashi, Ryosuke Ando, and Takayuki Nakano
  • Organizer: The American Geophysical Union Fall Meeting 2021
  • Int'l Joint Research
• [Presentation] ストークス・ヘルメルト法に基づく精密ジオイド決定のための凝縮地形質量の最適な深度の検討 (2021)
  • Author(s): 松尾功二
  • Organizer: 測地学会第136回講演会
• [Presentation] Examining the optimal depth of the condensed topographic masses for precise geoid determination based on the Stokes-Helmert scheme - A case study in Colorado (2021)
  • Author(s): Koji Matsuo
  • Organizer: Scientific Assembly of the International Association of Geodesy 2021
  • Int'l Joint Research
• [Presentation] 3次元最小二乗コロケーション法による航空重力データの精度評価 (2021)
  • Author(s): 松尾功二
  • Organizer: JpGU - AGU Joint Meeting 2021: Virtual
• [Presentation] 小型・低価格 Omni-SLR 要素技術開発 (1) システムコンセプト (2021)
  • Author(s): 大坪 俊通，荒木 博志，横田 裕輔，松本 岳大，小林 美穂子，土井 浩一郎，国森 裕生，中島 潤一
  • Organizer: 日本測地学会第136回講演会
• [Presentation] Coordinating global geodesy in Japan: GGOS Japan (2021)
  • Author(s): Toshimichi Otsubo, Basara Miyahara, Shinobu Kurihara, Yusuke Yokota, Yu Takagi, Shin'ichi Watanabe, Hiroshi Takiguchi, Yuichi Aoyama, Koji Matsuo
  • Organizer: Scientific Assembly of the International Association of Geodesy 2021
  • Int'l Joint Research
• [Presentation] GGOS Japan: 2019-2021 トピックス (2021)
  • Author(s): 大坪 俊通, 宮原 伐折羅, 栗原 忍, 横田 裕輔, 高木 悠, 渡邉 俊一, 瀧口 博士, 青山 雄一, 松尾 功二
  • Organizer: 日本地球惑星科学連合2021年大会
• [Presentation] SLR 装置の小型化・低価格化： Omni-SLR 進捗報告 (2021)
  • Author(s): 大坪 俊通, 荒木 博志, 横田 裕輔, 土井 浩一郎, 國森 裕生, 小林 美穂子, 塚越 涼, 友松 雅人, 松本 岳大
  • Organizer: 日本地球惑星科学連合2021年大会
• [Presentation] Geoid determination using airborne gravity data in the Kanto area of Japan (2020)
  • Author(s): K. Matsuo
  • Organizer: American Geophysical Union fall meeting 2020: Virtual
  • Int'l Joint Research
• [Presentation] 航空重力データの重力ジオイド計算への適用- 関東地方を例に (2020)
  • Author(s): 松尾功二
  • Organizer: 測地学会第134回講演会
• [Presentation] 房総半島における航空重力データを用いた重力ジオイド計算の初期的結果 (2020)
  • Author(s): 松尾功二
  • Organizer: JpGU - AGU Joint Meeting 2020: Virtual
• [Presentation] 国際高さ基準座標系への貢献に向けた日本列島の重力ポテンシャル値の推定 (2020)
  • Author(s): 松尾功二
  • Organizer: JpGU - AGU Joint Meeting 2020: Virtual
• [Presentation] Current status of Japan geoid model and ongoing project of airborne gravity surveys for geoid improvement (2020)
  • Author(s): K. Matsuo, M. Miyahara
  • Organizer: First Asia Pacific geoid workshop for IAG-SC2.4e
  • Int'l Joint Research
• [Presentation] GGOS Japan: Seven-year history and hot topics (2020)
  • Author(s): T. Otsubo, B. Miyahara, S. Kurihara, Y. Yokota
  • Organizer: American Geophysical Union fall meeting 2020: Virtual
  • Int'l Joint Research
• [Presentation] GGOS Japan: グローバル宇宙測地推進剤として (2020)
  • Author(s): 大坪 俊通, 宮原 伐折羅, 栗原 忍，横田 裕輔
  • Organizer: VLBI懇談会シンポジウム
  • Invited
• [Presentation] SLR 装置の小型化・低価格化の試み： Omni-SLR 計画の概要 (2020)
  • Author(s): 大坪 俊通, 荒木 博志, 横田 裕輔, 土井 浩一郎, 国森 裕生, 小林 美穂子, 塚越 涼, 友松 雅人, 松本 岳大
  • Organizer: 測地学会第134回講演会
• [Presentation] GGOS Japan’s roles and activities as a GGOS Affiliate (2020)
  • Author(s): T. Otsubo, B. Miyahara, Y. Yokota, S. Kurihara
  • Organizer: JPGU-AGU Joint Meeting 2020
• [Presentation] GGOS Japan: Uniting Space Geodetic Activities in Japan (2020)
  • Author(s): T. Otsubo, B. Miyahara, Y. Yokota, S. Kurihara, H. Munekane, S.Watanabe, T. Miyazaki, H. Takiguchi, Y. Aoyama, K. Doi, Y. Fukuda, K. Matsuo, T. Jike, T. Matsumoto, R. Ichikawa
  • Organizer: EGU General Assembly 2020
  • Int'l Joint Research
• [Presentation] Elaborated Time-Varying Model of Earth Radiation Pressure Acceleration Tested with Satellite Laser Ranging Data (2019)
  • Author(s): T. Otsubo
  • Organizer: AGU Fall Meeting 2019
  • Int'l Joint Research
• [Presentation] The Final Frontier for Satellite Laser Ranging: Antarctica (2019)
  • Author(s): T. Otsubo, Y. Aoyama, A. Hattori, K. Doi, M. Pearlman, C. Noll
  • Organizer: The Tenth Symposium on Polar Science
  • Int'l Joint Research / Invited
• [Presentation] 近年のGGOS とGGOS Japanの活動 (2019)
  • Author(s): 横田 裕輔, 大坪 俊通, 宮原 伐折羅, 宗包 浩志
  • Organizer: VLBI懇談会シンポジウム
• [Presentation] IUGG 2019 報告 (2019)
  • Author(s): 大坪 俊通
  • Organizer: 第132回日本測地学会講演会
• [Presentation] 地球輻射圧加速度の精密モデル構築と SLR 解析への適用 (2019)
  • Author(s): 大坪 俊通
  • Organizer: 第132回日本測地学会講演会
• [Presentation] 地球の球面性を考慮した完全ブーゲ重力異常の計算 (2019)
  • Author(s): 松尾 功二
  • Organizer: 第132回日本測地学会講演会
• [Presentation] Opening remarks from GB Chair: Highlighting the significance of the workshop (2019)
  • Author(s): T. Otsubo
  • Organizer: ILRS Technical Workshop
  • Int'l Joint Research / Invited
• [Presentation] ADS-B aircraft safety system assembled at less than EUR/USD 100 (2019)
  • Author(s): N. Morishita, T. Otsubo
  • Organizer: ILRS Technical Workshop
  • Int'l Joint Research
• [Presentation] グローバル測地学と南極測地観測 (2019)
  • Author(s): 大坪 俊通
  • Organizer: 令和元年度国立極地研究所共同利用研究集会「多時間スケールにおける極域の氷床-海洋-固体地球相互作用の解明
• [Presentation] Space Geodetic Activities Organized by GGOS Working Group of Japan (2019)
  • Author(s): -T. Otsubo, B. Miyahara, T. Wakasugi, Y. Aoyama, Y. Yokota, T. Miyazaki, Y. Fukuda
  • Organizer: 27th International Union of Geodesy and Geophysics General Assembly
  • Int'l Joint Research
• [Presentation] Gravimetric geoid computation over Colorado based on the Remove-Compute-Restore Stokes-Helmert scheme (2019)
  • Author(s): K. Matsuo, R. Forsberg
  • Organizer: 27th International Union of Geodesy and Geophysics General Assembly
  • Int'l Joint Research
• [Presentation] Current status and problems of geodetic observation data distribution (2019)
  • Author(s): -T. Otsubo, Y. Yokota, T. Ishikawa, M. Sekido, T. Miyazaki, S. Kurihara
  • Organizer: 日本地球惑星科学連合2019年大会
• [Presentation] 航空重力データを用いた重力ジオイド・モデリング：米国コロラド州を例に (2019)
  • Author(s): 松尾 功二、 R. Forsberg
  • Organizer: 日本地球惑星科学連合2019年大会
• [Presentation] The current status and future plans of height reference system in Japan (2018)
  • Author(s): K. Matsuo, T. Yahagi, Y. Hiraoka, R. Forsberg, A. Olesen, A. Kasen
  • Organizer: International Symposium Gravity, Geoid and Height Systems, 2018
  • Int'l Joint Research
• [Presentation] Interannual crustal load deformations induced by non-tidal oceanic mass variations around Japan (2018)
  • Author(s): K. Matsuo, R. Forsberg
  • Organizer: American Geophysical Union fall meeting 2018
  • Int'l Joint Research
• [Presentation] Implication of Low-Degree Gravitational Change on Sea Level Variations (2018)
  • Author(s): S. Yi, K. Matsuo, K. Heki
  • Organizer: Asia Oceania Geosciences Society 15th annual meeting
  • Int'l Joint Research
• [Presentation] Syowa Geodetic Station in Antarctica: Current Status and Future Prospects (2018)
  • Author(s): A. Hattori, T. Otsubo, Y. Aoyama, K. Doi, C. Higashino
  • Organizer: 21st International Workshop on Laser Ranging
  • Int'l Joint Research
• [Presentation] Systematic SLR errors detected in precise orbit determination (2018)
  • Author(s): T. Otsubo
  • Organizer: 21st International Workshop on Laser Ranging
  • Int'l Joint Research
• [Presentation] Precise modeling of solar radiation pressure acceleration for spherical geodetic satellites (2018)
  • Author(s): A. Hattori, T. Otsubo
  • Organizer: 21st International Workshop on Laser Ranging
  • Int'l Joint Research
• [Presentation] Updated centre of mass correction tables for LAGEOS, Etalon, LARES, Starlette and Ajisai (2018)
  • Author(s): J. Rodriguez, G. M. Appleby, T. Otsubo
  • Organizer: 21st International Workshop on Laser Ranging
  • Int'l Joint Research
• [Presentation] はやぶさ2 LIDAR 初期データの解析 (2) c5++ の機能拡張 (2018)
  • Author(s): 大坪 俊通, 山本 圭香, 松本 晃治
  • Organizer: 第130回日本測地学会講演会
• [Presentation] 測地観測網最大の空白：南極大陸 (2018)
  • Author(s): 大坪 俊通, 日置 幸介, 宮原 伐折羅, 福田 洋一, 土井 浩一郎, 青山 雄一
  • Organizer: 南極観測シンポジウム
• [Presentation] Do we need a new Fundamental Geodetic Station in Antarctica? (2018)
  • Author(s): O. Kristiansen, L. Combrinck, H. P. Kierulf, D. MacMillan, T. Otsubo, P. E. Opseth, L. M. Tangen
  • Organizer: International VLBI Service for Geodesy and Astrometry 2018 General Meeting
  • Int'l Joint Research
• [Presentation] Further improvements in mitigating systematics in geodetic laser ranging (2018)
  • Author(s): J. Rodriguez, G. M. Appleby, T. Otsubo
  • Organizer: European Geosciences Union General Assembly 2018
  • Int'l Joint Research
• [Book] リモートセンシング事典（分担執筆, 項目タイトル：10-42 GRACE） (2023)
  • Author(s): 日本リモートセンシング学会
  • Total Pages: 758
  • Publisher: 丸善出版
  • ISBN: 9784621307762