Last Updated : July 1, 2025

Space Geodesy Research Past Topics

  • Coastline change caused by the 2024 Noto Peninsula Earthquake detected by ALOS-2 SAR satellite image (Jan., 2024) [→SAR satellite image]
  • The Joint PI Meeting of JAXA Earth Observation Missions FY2023(Nov.2023)
    • Nationwide land deformation monitoring: application of InSAR time series analysis to Japan
  • The 2023 Seismological Society of Japan Fall Meeting(Oct. 2023)
    • Detailed fault ruptures for the 2023 Turkey-Syria earthquake revealed by SAR-based crustal deformation analysis
  • 140th Meeting of the Geodetic Society of Japan(Oct. 2023)
  • 28th International Union of Geodesy and Geophysics General Assembly(IUGG2023)(July 2023)
    • Nationwide land deformation monitoring: application of InSAR time series analysis to Japan[Abstract (PDF:58KB)]
    • Gravimetric geoid determination of Japan using nationwide airborne gravity data[Abstract (PDF:169KB)]
  • Japan Geoscience Union Meeting 2023 (JpGU 2023) (May 2023)
    • Detailed fault ruptures for the 2023 Turkey earthquake revealed by SAR-based crustal deformation analysis [Abstract (PDF:317KB)]
    • The consistency between the GEONET routine solution and the multi-GNSS PPP solution[Abstract (PDF:176KB)]
    • Investigation of interpolation method for estimation of Surface Deformation model[Abstract (PDF:235KB)]
    • A precise gravimetric geoid model for Japan that incorporates the airborne gravity data over the four main islands[Abstract (PDF:222KB)]
  • The Second Asia Pacific geoid workshop for IAG-SC2.4e (Oct. 2022)
  • The Thirteenth Joint Meeting of the U.S.-Japan Panel on Earthquake Research (UJNR) (Sep. 2022)
    • Research on relationship between fault rupture propagation and crustal structure of volcano area: case study of the 2016 Kumamoto Earthquake[Abstract (PDF:840KB)]
  • Japan Geoscience Union Meeting 2022 (JpGU 2022) (May-June 2022)
    • An attempt to improve coastal geoid determination by introducing airborne gravity data and a marine residual terrain model [Abstract (PDF:102KB)]
    • Impact of introducing LEO satellite tracking data on SLR-based gravity field determination [Abstract (PDF:82KB)]
    • Achievements of ground deformation monitoring using ALOS satellite series at GSI and the way forward [Abstract (PDF:181KB)]
    • Spatial relation between fault motions and density structures at the terminus of fault rupture for the 2016 Kumamoto earthquake [Abstract (PDF:157KB)]
  • American Geophysical Union fall meeting 2021 (AGU 2021) (Dec. 2021)
    • What controlled the fault ruptures in the final stage?: A comparison of SAR-derived fault slips with gravity-inferred density structures for the 2016 Kumamoto earthquake in Japan [Abstract (PDF:63KB)]
    • Effect of lateral topographic density variations on subsurface structure estimation by gravity inversion – a case study in Aso Caldera, Japan [Abstract (PDF:137KB)]
  • Scientific Assembly of the International Association of Geodesy (IAG 2021) (June-Jul. 2021)
    • Examining the optimal depth of the condensed topographic masses for precise geoid determination based on the Stokes-Helmert scheme – A case study in Colorado [Abstract (PDF:111KB)]
  • Japan Geoscience Union Meeting 2021 (JpGU 2021) (May-June 2021)
    • Development of coordinate calculation strategy for GEONET station using multi GNSS PPP aiming future management scheme of the national coordinate [Abstract (PDF:141KB)]
    • Evaluation Performance of QZSS Centimeter Level Augmentation Service (CLAS) with long-term field observations [Abstract (PDF:150KB)]
    • Discussion of the colour map for SAR interferograms [Abstract (PDF:343KB)]
    • Accuracy evaluation of airborne gravity data by three-dimensional least-squares collocation method [Abstract (PDF:101KB)]
  • American Geophysical Union fall meeting 2020 (AGU 2020) (Dec. 2020)
  • First Asia Pacific geoid workshop for IAG-SC2.4e (Oct. 2020)
    • Current status of Japan geoid model and ongoing project of airborne gravity surveys for geoid improvement [Abstract (PDF:66KB)]
  • JpGU - AGU Joint Meeting 2020: Virtual (Jul. 2020)
    • The Global Geodetic Observing System [Abstract (PDF:1.0MB)]
    • Research on the development of rapid and accurate GNSS routine analysis system (3) [Abstract (PDF:49KB)]
    • Performance Evaluation of Low-cost GNSS Antenna and Receivers for Geodetic Applications [Abstract (PDF:47KB)]
    • An Open-Source InSAR Time Series Analysis Package LiCSBAS and Its Application [Abstract (PDF:786KB)]
    • Determination of geopotential value over Japan for contribution to the International Height Reference Frame [Abstract (PDF:46KB)]
    • Preliminary result of gravimetric geoid computation using airborne gravity data over the Boso peninsula [Abstract (PDF:46KB)]
  • European Geophysical General Assembly 2020 (EGU 2020) (May 2020)
  • American Geophysical Union fall meeting 2019 (AGU 2019) (Dec. 2019)
    • Development of PPP processing system of Japan and its evaluation by comparison with GEONET routine analysis system [Abstract (PDF:39KB)]
  • 27th International Union of Geodesy and Geophysics General Assembly (IUGG2019) (Jul. 2019)
    • Development of real-time PPP processing system of Japan and its evaluation by comparison with REGARD [Abstract (PDF:68KB)]
    • Gravimetric geoid computation over Colorado based on the Remove-Compute-Restore Stokes-Helmert scheme [Abstract (PDF:445KB)]
  • FIG Working Week 2019 (Apr. 2019)
    • Work and Plan of UN-GGIM-AP Working Group on Geodetic Reference Frame [Abstract (PDF:67KB)]
    • Development of real-time PPP processing system of Japan and its evaluation by comparison with REGARD [Abstract (PDF:68KB)]
  • Technical Seminar on Reference Frames in Practice (Apr. 2019)
  • American Geophysical Union fall meeting 2018 (AGU 2018) (Dec. 2018)
    • Development of Rapid and Accurate GNSS Routine Analysis System of GEONET Data by PPP-AR [Abstract(PDF:33KB)]
    • Interannual crustal load deformations induced by non-tidal oceanic mass variations around Japan [Abstract(PDF:355KB)]
  • International Symposium "Gravity, Geoid and Height Systems 2018" (GGHS 2018) (Sep. 2018)
  • International Geoscience and Remote Sensing Symposium 2018 (IGARSS 2018) (Jul. 2018)
    • Coseismic Surface Deformations of Global Large Earthquakes in 2014-2016 Detected by ALOS-2 InSAR [->LINK]
  • FIG Congress 2018 (May. 2018)
    • Geodetic Reference Frame of Japan as Basic Infrastructure Enabling Us Precise GNSS Positioning Improvement of GNSS [->Abstract(PDF:69KB)]
    • Improvement of GNSS Positioning Accuracy Under Urban Environment by Multipath Mitigation Methodshods [->Abstract(PDF:69KB)]
  • American Geophysical Union fall meeting 2017 (AGU 2017) (Dec. 2017)
    • Continuous monitoring of a magma chamber’s pressure changes using geodetic data: Time-dependent inversion with Ensemble Kalman Filter (EnKF) [Abstract(PDF:41KB)]
    • An improved gravimetric geoid model for Japan based on the Stokes-Helmert scheme with a deterministically modified Stokes’ kernel [Abstract(PDF:313KB)]
  • International Symposium on Polar Ice, Polar Climate, Polar Change: Remote sensing advances in understanding the cryosphere (international glaciological society) (Aug. 2017)
    • Detection of quadratic ice mass variations in Greenland by ICEsat laser altimetry [Abstract(PDF:158KB)]
  • Joint scientific Assembly of the International Association of Geodesy and the Internationl Association of Seismology and Physics of the Earth's Interior (IAG-IASPEI 2017) (Jul.-Aug. 2017)
    • A prototype system for PPP kinematic positioning of Japanese GEONET stations [Abstract(PDF:31KB)]
    • An improved gravimetric geoid model for Japan based on the Stokes-Helmert scheme with a deterministically modified Stokes’ kernel [Abstract(PDF:104KB)]
    • SLR monthly gravity solutions using the C5++ software [Abstract(PDF:104KB)]
    • Estimation of PostSeismic Deformation Model Using Monte Carlo Method [Abstract(PDF:84KB)]
  • American Geophysical Union fall meeting 2016 (AGU 2016) (Dec. 2016)
    • How to make old and dense gravity data consistent with the latest gravity data? --Example in Japan--[Abstract (PDF:33KB)]
  • 20th International Workshop on Laser Ranging (ILRS2016) (Oct. 2016)
  • Japan Geoscience Union Meeting 2016 (May 2016)
    • Investigation of method that makes Japanese old and dense gravity data consistent with Japan gravity standardization net 2013[Abstract(PDF:114KB)]
    • Revisiting estimates of glacier mass balance in Asian High Mountains from satellite gravimetry[Abstract(PDF:171KB)]
  • International Federation of SurveyorsWorking Week 2016 (FIG 2016) (May 2016)
  • The 26th General Assembly of the International Union of Geodesy and Geophysics (IUGG2015) (Jun.-Jul. 2015)
    • Real-time Earthquake Magnitude Estimation by the GEONET real-time analysis system: REGARD [Abstract (PDF:40KB)]
    • Abrupt changes in drift trend of the earth’s geocenter and rotational pole in 2012-2014 [Abstract (PDF:54KB)]
  • Japan Geoscience Union Meeting 2015 (May 2015)
    • Real-time Earthquake Magnitude Estimation by the GEONET real-time processing system: REGARD [Abstract (PDF:435KB)]
    • Making of Japanese domestic gravity data which consistent to Japan gravity standardization net 2013 [Abstract (PDF:34KB)]
    • Gravity variations and vertical displacements over the Japanese islands [Abstract (PDF:33KB)]
    • Abrupt changes in drift trend of the earth’s geocenter and rotational pole in 2012-2014 [Abstract (PDF:36KB)]
  • American Geophysical Union fall meeting 2014 (AGU 2014) (Dec 2014)
    • Kinematic GPS analysis gives new insights on the origin of the very-long-period seismic signals at Miyake-jima volcano during the caldera formation [Abstract (PDF:78 KB)][Poster (PDF:801KB)]
    • How GNSS Earth Observation Network System (GEONET) in Japan Contributes to Geohazards Mitigation [Abstract (PDF:9KB)]
  • International Symposium on Geodesy for Earthquake and Natural Hazards (GENAH 2014) (Jul 2014)
    • The Very-Long-Period Seismic Signals at Miyake-Jima Volcano during the Caldera Formation Revisited: Insights from GPS Observations [Abstract (PDF:112KB)]
    • Development and Reliability of Real-Time Fault Model Estimation Routines in the GEONET Real-Time Processing System [Abstract (PDF:10KB)]
  • Japan Geoscience Union Meeting 2014 (Apr-May 2014)
    • Research on the characteristics of ionospheric disturbance around Japan by GPS-TEC for ionospheric correction to InSAR [Abstract (PDF:37KB)]
  • Japan Geoscience Union Meeting 2013 (May 2013)
    • On ionospheric correction of ALOS/PALSAR interferograms using GEONET data (preliminary report) [Abstract (PDF:33KB)]
    • Evaluation of domestic VLBI observation using simulation
    • Diagnosis system of troposphere-induced positioning errors for GEONET [Abstract (PDF:33KB)]
  • Japan Geoscience Union Meeting 2012 (May 2012)
    • Co-and post-seismic slips of the 2011 Tohoku-oki Earthquake sequence from EOF analysis of GPS kinematic time series [Abstract (PDF:32KB)]
    • Diagnosis of troposphere-induced positioning errors using high-resolution numerical weather model[Abstract (PDF32KB)]
    • Development of the space-time information justification verification system of the GNSS satellite using VLBI correlation [Abstract (PDF:33KB)]
  • Japan Geoscience Union Meeting 2011 (May 2011)
    • Numerical simulation of positioning errors using high-resolution numerical weather prediction model [Abstract (PDF:33KB)]
    • The development of space-time information certification system using VLBI correlation technique [Abstract (PDF:36KB)]
  • IAG Commission 1 Symposium 2010 Reference Frames for Applications in Geosciences (REFAG2010)(Oct 2010)
    • Effects of astronomic tides and ocean tidal loading on leveling over long distance: test study for Japan
    • Comparison of latest global and local gravimetric geoid models with GPS/leveling geoidal undulations over Japan
  • Japan Geoscience Union Meeting 2010 (May 2010)
    • Apparent stability of GPS monumentations on the premise of GSI, Japan from vertical coordinate time series [Abstract (PDF:72KB)]
    • Evaluation of numerical simulation of positioning errors using numerical weather prediction models [Abstract (PDF:69KB)]
    • On vertical deformations and long-term changes of mean sea level from GPS/tidal record - Preliminary report [Abstract (PDF:69KB)]
  • The 8th International e-VLBI Workshop (Jun 2009)
    • Fundamental research about the space-time information certification using VLBI correlation technique [Poster (PDF:224KB)]
  • European Geosciences Union General Assembly 2009 (Apr 2009)
    • Impact of mapping functions and a priori hydrostatic delays on GPS-derived vertical coordinates and wet zenith delays over Japan [Poster (PDF:4.7MB)]