Publications (EN)

Peer reviewed paper

Iinuma, T., Kido, M., Fukuda, T., Ohta, Y., Tomita, F., & Hino, R. (2025). Seafloor Crustal Deformation Observations Utilizing Unmanned Surface Vehicles for Monitoring Fault Locking and Sliding Processes at Subduction Zone Plate Boundaries. 2025 IEEE Underwater Technology (UT), Taipei, 1–5. https://doi.org/10.1109/UT61067.2025.10947368
Tomita, F., Kido, M., Iinuma, T., & Ohta, Y. (2025). GNSS-Acoustic positioning error in the vertical component considering the uncertainty of a reference sound speed profile. Marine Geophysical Research, 46(1), 3. https://doi.org/10.1007/s11001-025-09563-w
Tomita, F. (2024). Enhanced GNSS-acoustic positioning method implementing with constraints on underwater sound speed structure. Earth, Planets and Space, 76(1), 178. https://doi.org/10.1186/s40623-024-02120-6
Plata‐Martinez, R., Iinuma, T., Tomita, F., Nakamura, Y., Nishimura, T., & Hori, T. (2024). Revisiting Slip Deficit Rates and Its Insights Into Large and Slow Earthquakes at the Nankai Subduction Zone. Journal of Geophysical Research: Solid Earth, 129(12). https://doi.org/10.1029/2023JB027942
Tomita, F., Kido, M. (2024) A new GNSS-acoustic positioning software implementing multiple positioning functions considering nadir total delays. Earth Planets Space 76, 48. https://doi.org/10.1186/s40623-024-01987-9
Nagano, A., Hasegawa, T., Ariyoshi, K., Iinuma, T., Fukuda, T., Fujii, N., Tomita, F., & Hino, R. (2022) USV-Observed Turbulent Heat Flux Induced by Late Spring Cold Dry Air Incursion over Sub-Mesoscale Warm Regions off Sanriku, Japan. Sensors, 22(24). doi:10.3390/s22249695
Tomita, F., Kido, M. (2022) An approximate travel time calculation and a robust GNSS-acoustic positioning method using an MCMC technique. Earth Planets Space 74, 176. doi:10.1186/s40623-022-01740-0
Tomita, F., T. Iinuma, R. Agata, & T. Hori. (2021). Development of a trans-dimensional fault slip inversion for geodetic data. Journal of Geophysical Research: Solid Earth, 126, e2020JB020991. doi:10.1029/2020JB020991
Iinuma, T., M. Kido, Y. Ohta, T. Fukuda, F. Tomita, & I. Ueki. (2021) GNSS-Acoustic Observations of Seafloor Crustal Deformation Using a Wave Glider. Frontiers in Earth Science, 9, 87. doi:10.3389/feart.2021.600946
Tomita, F., T. Iinuma, Y. Ohta, R. Hino, N. Uchida. (2020) Improvement on spatial resolution of a coseismic slip distribution using postseismic geodetic data through a viscoelastic inversion. Earth Planets Space 72, 84. doi:10.1186/s40623-020-01207-0
Tomita, F., M. Kido, C. Honsho, & R. Matsui. (2019) Development of a kinematic GNSS-Acoustic positioning method based on a state-space model. Earth, Planets and Space, 71(1), 102. doi:10.1186/s40623-019-1082-y
Honsho, C., M. Kido, F. Tomita & N. Uchida. (2019) Offshore Postseismic Deformation of the 2011 Tohoku Earthquake Revisited: Application of an Improved GPS-Acoustic Positioning Method Considering Horizontal Gradient of Sound Speed Structure. Journal of Geophysical Research: Solid Earth, 124. doi:10.1029/2018JB017135
Tomita, F., Y. Ohta, T. Iinuma, R. Hino, M. Kido & N. Uchida. (2018) Seafloor Geodetic Observations to Reveal Co- and Post-Seismic Slip Distributions of the 2011 Tohoku-Oki Earthquake. 2018 OCEANS - MTS/IEEE Kobe Techno-Oceans (OTO), 1-4
Wang, K., T. Sun, L. Brown, R. Hino, F. Tomita, M. Kido, T. Iinuma, S. Kodaira, T. Fujiwara. (2018) Learning from crustal deformation associated with the M=9 2011 Tohoku-oki earthquake, Geosphere, 14, 2. doi:10.1130/GES01531.1
Tomita, F., R. Oyanagi, A. Hisamatsu, S. Yamada, S. Ishibashi, S. Watanabe, R. Kaneko, H. Anzai, M. Kuri. (2017) Analysis of “Disaster Mitigation Action Card Game” on educational effect for junior and junior high school students by questionnaire surveys, Journal of Disaster Information Studies, 15, 2. (in Japanese)
Tomita, F., M. Kido, Y. Ohta, T. Iinuma, R. Hino. (2017) Along-trench variation in seafloor displacements after the 2011 Tohoku earthquake. Science Advances, 3, e1700113. doi:10.1126/sciadv.1700113
Azuma, R., F. Tomita, T. Iinuma, M. Kido, R. Hino. (2016) Development and examination of new algorithms of traveltime detection in GPS/acoustic geodetic data for precise and automated analysis. Earth, Planets and Space, 68:143. doi:10.1186/s40623-016-0521-2
Tomita, F., M. Kido, Y. Osada, R. Hino, Y. Ohta, T. Iinuma. (2015) First measurement of the displacement rate of the Pacific Plate near the Japan Trench after the 2011 Tohoku-Oki earthquake using GPS/acoustic technique, Geophysical Research Letter, 42, pp. 8391– 8397. doi:10.1002/2015GL065746
Kido, M., H. Fujimoto, R. Hino, Y. Ohta, Y. Osada, T. Iinuma, R. Azuma, I. Wada, S. Miura, S. Suzuki, F. Tomita, M. Imano (2015) Progress in the Project for Development of GPS/Acoustic Technique Over the Last Four Years, IAG Symposia Series, Springer.

Oral presentation at international conference (First author only)

○Tomita, F., & M. Kido, Development of a new GNSS-acoustic positioning software “SeaGap” and its application, 2023 AGU Fall Meeting, G42A-08, San Francisco & Online, Dec. 2023.
○Tomita, F., M. Kido, C. Honsho, T. Iinuma, Y. Ohta, R. Hino, T. Sun, H. Luo & K. Wang, Near-Trench Postseismic Subsidence Following the 2011 Tohoku-oki Earthquake Revealed by GNSS-Acoustic Observations, 2022 AGU Fall Meeting, T56A-04, Chicago & Online, Dec. 2022.
○Tomita, F., C. Honsho & M. Kido, Recent progresses in GNSS-Acoustic positioning technique and results in the off-Tohoku region, Japan (invited), 2018 AGU Fall Meeting, T44C-03, Washington D.C., Dec. 2018.
Tomita, F., Y. Ohta, ○T. Iinuma, R. Hino, M. Kido, & N. Uchida, Seafloor geodetic observations to reveal co- and post-seismic slip distributions of the 2011 Tohoku-oki earthquake, OCEANS’ 18 MTS/IEEE Kobe/Techno-Ocean 2018, 1.171213-020, Kobe, May 2018.
○Tomita, F., M. Kido, Y. Ohta, T. Iinuma & R. Hino, Postseismic deformation of the 2011 Tohoku Earthquake measured by GPS/Acoustic observations, IAG-IASPEI 2017, J07, T000721, Kobe, Aug. 2017.
○Tomita, F., C. Honsho & M. Kido, Detection of offshore vertical displacements after the 2011 Tohoku-oki Earthquake from GPS-A observations, JpGU-AGU Joint Meeting 2017, SCG71-23, Makuhari, May 2017.
Tomita, F., M. Kido, Y. Ohta, R. Hino, ○T. Iinuma & Y. Osada, Spatial variation of the postseismic seafloor displacements associated with the 2011 Tohoku-oki earthquake (M9.0) based on repeated GPS/Acoustic observations, IASPEI 2nd Regional Assembly Latin-American and Caribbean Seismological Commission, O103, San Jose, Costa Rica, June 2016.
○Tomita, F., M. Kido, Y. Ohta, R. Hino, T. Iinuma, Y. Osada, Spatial characteristics of postseismic deformation following the 2011 Tohoku-oki earthquake inferred from repeated GPS/Acoustic observations, Japan Geoscience Union Meeting 2016, SSS02-20, Makuhari, May 2016.
○Tomita, F, M. Kido, Y. Ohta, R. Hino & Y. Osada, Postseismic deformation of the 2011 Tohoku-Oki earthquake revealed by repeated GPS/Acoustic observations, 2015 AGU Fall Meeting, T43G-07, San Francisco, Dec. 2015.
○Tomita, F., M. Kido, Y. Osada, H. Fujimoto, R. Hino, R. Azuma, T. Iinuma, Y. Ohta & I. Wada, The postseismic deformation of the 2011 Tohoku-oki Earthquake observed by repeated GPS/Acoustic surveys, AOGS 11th Annual Meeting, SE20-A057, Sapporo, July. 2014.
○Tomita, F., M. Kido, Y. Osada, R. Azuma, R. Hino, H. Fujimoto, T. Iinuma, Y. Ohta & I. Wada, Postseismic Seafloor Deformation Associated with the2011 Tohoku-oki Earthquake Revealed by Repeated GPS/Acoustic Observations, GENAH2014, 105, Matsushima, July 2014.

Poster presentation at international conference (First author only)

○Tomita, F., T. Sun, T. Iinuma, M. Kido, Y. Ohta, N. Uchida, R. Hino, K. Wang, Postseismic deformation following the 2011 Tohoku earthquake revealed by onshore geodetic, offshore geodetic, and small repeating earthquake observations, 2024 AGU Fall Meeting, G23B-3585, Washington DC, Dec. 2024.
○Tomita, F., T. Iinuma, R. Agata, T. Hori, Imaging of fault-slip distributions using a trans-dimensional geodetic slip inversion approach, 2020 AGU Fall Meeting, S037-0005, online, Dec. 2020.
○Tomita, F., T. Iinuma, R. Agata, T. Hori, Estimation on co- & post-seismic slip distributions through viscoelastic inversion using Reversible-jump MCMC, 2019 AGU Fall Meeting, S53D-0476, San Francisco, Dec. 2019.
○Tomita, F., C. Honsho, M. Kido, Detection of offshore vertical displacements after the 2011 Tohoku-oki Earthquake using GPS/A observations, IAG-IASPEI 2017, J07, T000719, Kobe, Aug. 2017.
○Tomita, F., M. Kido, Y. Ohta, T. Iinuma, R. Hino, Postseismic deformation associated with the 2011 Tohoku Earthquake deduced by means of GPS/Acoustic surveys, EGU General Assembly 2017, 19, EGU2017-11579, Vienna, April 2017.
○Tomita, F., M. Kido, Y. Ohta, R. Hino, T. Iinuma, Spatiotemporal variation in the postseismic deformation of the 2011 Tohoku-oki earthquake revealed by seafloor geodetic observations, 2016 AGU Fall Meeting, T31C-2921, San Francisco, Dec. 2016.
○Tomita, F., M. Kido, Y. Osada, R. Hino, T. Iinuma, Y. Ohta, Fast Displacement Rate of the Subducting Pacific Plate After the 2011 Tohoku-oki Earthquake Measured by GPS/Acoustic Surveys, 2014 AGU Fall Meeting, G43B-0515, San Francisco, Dec. 2014.

Oral presentation at internal meeting (First author only)

○Tomita, F., Y. Ohta, M. Kido, M. Ohzono, H. Takahashi, R. Hino, T. Iinuma, Slip deficits off Nemuro inferred from GNSS-A surveys, 142th Meeting of the Geodetic Society of Japan, 41, Kure, Oct.–Nov. 2024.
○Tomita, F., Elucidation of interplate slip behaviors in a subduction zone based on seafloor geodetic observations, The 2024 SSJ Fall Meeting, S20-08, Niigata, Oct. 2024.
○Tomita, F., Y. Ohta, M. Kido, T. Iinuma, N. Kurosu, M. Ohzono, H. Takahashi, R. Hino, Shallow interplate slip deficit inferred from GNSS-Acoustic observations off Nemuro, JpGU Meeting 2024, SGD02-02, Makuhari, May 2024.
○Tomita, F., M. Kido, T. Iinuma, Y. Ohta, R. Hino, M. Ohzono, H. Takahashi, R. Plata-Martínez, T. No, K. Nakahigashi, K. Nakamura, GNSS-Acoustic seafloor geodetic observations and their results along the Japan-Kuril trench, 2023 SSJ Fall Meeting, S03-05, Yokohama, Oct. 2023．
○Tomita, F., Development of a new software for GNSS-acoustic positioning (SeaGap), JpGU Meeting 2023, SGD01-07, Makuhari, May 2023.
○Tomita, F., T. Iinuma, M. Kido, Y. Ohta, T. Fukuda, R. Hino, GNSS-Acoustic seafloor geodetic observations using a Wave Glider off Tohoku and their results, JpGU Meeting 2023, SCG52-03, Makuhari, May 2023.
○Tomita, F., M. Kido, Y. Ohta, R. Hino, T. Iinuma, C. Honsho, M. Ohzono, H. Takahashi, Seafloor Geodetic Observations along the Kuril Trench off Nemuro, 2022 SSJ Fall Meeting, S22-09, Sapporo, Oct. 2022．
○Tomita, F., T. Iinuma, M. Kido, Y. Ohta, C. Honsho, T. Fukuda, GNSS-Acoustic seafloor geodetic observations using a Wave Glider off Tohoku, JpGU Meeting 2022, SCG48-10, Makuhari, May 2022.
○Tomita, F., M. Kido, Development of a GNSS-Acoustic analysis method using a MCMC technique, 136th Meeting of the Geodetic Society of Japan, 08, Online, Nov. 2021.
○Tomita, F., T. Iinuma, M. Kido, C. Honsho, Y. Ohta, T. Fukuda, GNSS-Acoustic observations using a Wave Glider and the recent seafloor crustal deformation off Tohoku, 2021 SSJ Fall Meeting, S03-09, Online, Oct. 2021．
○Tomita, F., M. Kido, Y. Ohta, T. Iinuma, C. Honsho, T. Fukuda, T. Hori, GNSS-Acoustic observations using a Wave Glider and their results, JpGU Meeting 2021, SCG45-15, Online, June 2021.
○Tomita, F., T. Iinuma, R. Agata, T. Hori, Estimation of coupling slip distributions in a subduction zone by a trans-dimensional inversion approach, 2020 SSJ Fall Meeting, S03-03, Online, Oct. 2020．
○Tomita, F., M. Kido, Y. Ohta, T. Iinuma, T. Fukuda, C. Honsho, Detection of seafloor crustal deformation by GNSS-Acoustic measurement using a Wave Glider - preliminary results of a trial observation for long-term operation, 134th Meeting of the Geodetic Society of Japan, 48, Online, Oct. 2020.
○Tomita, F., M. Kido, Y. Ohta, T. Iinuma, T. Fukuda, Detection of seafloor crustal deformation by GNSS-Acoustic measurement using a Wave Glider, 132th Meeting of the Geodetic Society of Japan, 33, Toyama, Oct. 2019.
○Tomita, F., M. Kido, C. Honsho, R. Matsui, Development of a kinematic GNSS-A positioning method using the extended Kalman-filter to detect precise vertical displacement, JpGU Meeting 2019, SCG56-21, Makuhari, May 2019.
○Tomita, F., M. Kido, R. Matsui, Development of GNSS-Acoustic positioning method based on State-Space Model, 130th Meeting of the Geodetic Society of Japan, 46, Kochi, Oct. 2018.
○Tomita, F., Y. Ohta, T. Iinuma, R. Hino, M. Kido, N. Uchida, Extension of postseismic geodetic observations constrains on coseismic slip distribution through viscoelastic relaxation, JpGU Meeting 2018, SSS09-08, Makuhari, May 2018.
○Tomita, F., Y. Ohta, T. Iinuma, M. Kido, R. Hino, Simultaneous estimation on co- and post-seismic slip distribution using viscoelastic Green’s function, 128th Meeting of the Geodetic Society of Japan, 28, Mizunami, Oct. 2017.
○Tomita, F., Y. Ohta, R. Hino, M. Kido, T. Iinuma, Simultaneous estimation on co- and post-seismic slip distribution of the 2011 Tohoku-oki earthquake using viscoelastic Green’s function, 2017 SSJ Fall Meeting, S3-18, Kagoshima, Oct. 2017.
○Tomita, F., Y. Ohta, R. Hino, M. Kido, T. Iinuma, Simultaneous estimation on co- and post-seismic slip distribution of the 2011 Tohoku-oki earthquake using viscoelastic Green’s function, 2016 SSJ Fall Meeting, S3-11, Nagoya, Oct. 2016.
○Tomita, F.，Y. Osada, Y. Ohta, R. Hino, M. Kido, T. Iinuma, Postseismic deformation following the 2011 Tohoku-oki earthquake measured by GPS/A seafloor geodetic observation, 2015 SSJ Fall Meeting, S04-10, Kobe, Oct. 2015．
○Tomita, F., M. Kido, Y. Osada, R. Hino, Y. Ohta, T. Iinuma, R. Azuma, I. Wada, S. Miura, Postseismic deformation following the 2011 Tohoku-oki earthquake measured by seafloor geodetic observation, JpGU Meeting 2015, SCG64-38, Makuhari, May, 2015.
○Tomita, F., M. Kido, Y. Osada, T. Iinuma, R. Hino, Y. Ohta, Detection of high displacement rate on the Pacific plate after the 2011 Tohoku-oki earthquake inferred from GPS/Acoustic observations, 122th Meeting of the Geodetic Society of Japan,8,Tsukuba, Nov. 2014.．
○Tomita, F., Y. Osada, Y. Ohta, M. Kido, R. Hino, T. Iinuma, High displacement rate of Pacific plate after the 2011 Tohoku-oki earthquake measured by GPS/Acoustic technique, 2014 SSJ Fall Meeting, A11-06, Niigata, Nov. 2014.
○Tomita, F., M. Kido, Y. Osada, R. Azuma, H. Fujimoto, R. Hino, T. Iinuma, Y. Ohta, I. Wada, Detection of post-seismic movement after Tohoku-oki Earthquake using GPS/Acoustic technique, JpGU Meeting 2014, SCG67-14, Yokohama, May 2014.

Poster presentation at internal meeting (First author only)

○Tomita, F., T. Sun, T. Iinuma, M. Kido, Y. Ohta, N. Uchida, R. Hino, K. Wang, Postseismic deformation after the 2011 Tohoku earthquake captured by GNSS, GNSS-A, and small repeating earthquakes, The 2024 SSJ Fall Meeting, S03P-03, Niigata, Oct. 2024.
○Tomita, F., M. Kido, T. Iinuma, Y. Ohta, R. Hino, Evaluation of vertical motion off Tohoku considering uncertainty in GNSS-Acoustic positioning, JpGU Meeting 2024, SCG48-P04, Makuhari, May 2024.
○Tomita, F., Development of a GNSS-Acoustic positioning method assuming a horizontal gradient underwater sound speed structure with various prior distributions, 140th Meeting of the Geodetic Society of Japan, P09, Sendai, Oct. 2023.
○Tomita, F., M. Kido, T. Iinuma, Y. Ohta, C. Honsho, R. Hino, Tetsuo No, Kazuo Nakahigashi, Recent GNSS-Acoustic seafloor geodetic observations off Tohoku and their results, 2022 SSJ Fall Meeting, S03P-06, Sapporo, Oct. 2022.
○Tomita, F., Detection of aseismic slip events along the plate interface after the 2011 Tohoku-oki earthquake inferred from geodetic data, JpGU Meeting 2022, SGD01-P03, Online, June 2022.
○Tomita, F., T. Iinuma, M. Kido, R. Hino, Y. Ohta, R. Agata, T. Hori, N. Uchida, Improvement of spatial resolution and evaluation of uncertainty for the coseismic slip distribution of the 2011 Tohoku-oki Earthquake, JpGU Meeting 2021, SCG54-P04, Online, June 2021.
○Tomita, F., T. Iinuma, R. Agata, T. Hori, Estimation on fault-slip distributions without smoothing constraints by Reversible-jump MCMC, JpGU-AGU Joint Meeting 2020, SSS14-P14, Online, July 2020.
○Tomita, F., T. Iinuma, R. Agata, T. Hori, Estimation on fault slip distributions through viscoelastic inversion using Reversible-jump MCMC, 2019 SSJ Fall Meeting, S03P-14, Kyoto, Sept. 2019.
○Tomita, F., M. Kido & C. Honsho, Effects of an initial underwater sound speed profile in GPS-Acoustic measurements, 126th Meeting of the Geodetic Society of Japan, P07, Mizusawa, Oct. 2016.
○Tomita, F., M. Kido, Y. Osada, H. Fujimoto, R. Hino, T. Iinuma, R. Azuma & Y. Ohta, A trial for detection of the subducting rate of the Pacific plate using GPS-Acoustic observations, 120th Meeting of the Geodetic Society of Japan, P4, Tokyo, Oct. 2013.

Oral presentation at international conference (not first author)

○Iinuma, T., Kido, M., Fukuda, T., Ohta, Y., Tomita, F., & Hino, R. (2025). Seafloor Crustal Deformation Observations Utilizing Unmanned Surface Vehicles for Monitoring Fault Locking and Sliding Processes at Subduction Zone Plate Boundaries. 2025 IEEE Underwater Technology (UT), Taipei, Mar. 2025.
○Sun, T., F. Tomita, T. Iinuma, R. Hino, M. Kido, Y. Ohta, J. He, K. Wang, A Thin and Weak Oceanic Lithosphere-Asthenosphere Boundary (LAB) Inferred From Crustal Deformation Following the 2011 Mw=9 Tohoku Earthquake, The 2024 AGU Annual Meeting, T52A-06, Washington DC, Dec. 2024.
○Kido, M., T. Iinuma, T. Fukuda, Y. Ohta, F. Tomita, N. Murai, Onboard processing and transmission of realtime GNSS-Acoustic data on a waveglider, The 2023 AGU Annual Meeting, G42A-04, San Francisco & Online, Dec. 2023.
◯Plata-Martinez, R. O., T. Iinuma, F. Tomita, T. Nishimura, Y. Nakamura, & T. Hori, New slip deficit rate model and slow earthquakes at the Nankai subduction zone, JpGU Meeting 2023, SCG45-05, Makuhari, May 2023.
○Kido, M., C. Honsho, F. Tomita, Y. Ohta, R. Hino, & T. Iinuma, Impact of employing a waveglider on GNSS-Acoustic survey along the Japan trench, EGU General Assembly 2022, EGU22-2138, Vienna, May 2022.
Sun, T., ○K. Wang, R. Hino, T. Iinuma, F. Tomita & M. Kido. Discoveries and Controversies in Geodetic Imaging of Deformation Before and After the M=9 Tohoku-oki Earthquake. 2017 AGU Fall Meeting, G42A-06, New Orleans, Dec. 2017.
○Iinuma, T., Y. Ohta, S. Miura, J. MutoO, F. Tomita, M. Kido & R. Hino. Spatio-Temporal Variation of the Postseismic Deformation Associated with the 2011 Tohoku Earthquake (M9.0) Based on Terrestrial and Seafloor Observations, AOGS 14th Annual Meeting, SE25-A005, Aug. 2017.
○Iinuma, T., Y. Ohta, S. Miura, J. Muto, F. Tomita, M. Kido & R. Hino, Spatio-temporal variation of the postseismic deformation of the 2011 Tohoku Earthquake based on terrestrial and seafloor observations, JpGU-AGU Joint Meeting 2017, SSS04-28, May 2017.
○Iinuma, T., F. Tomita, M. Kido, Y. Ohta, R. Hino & Y. Osada, Postseismic Deformation Associated with the 2011 Tohoku-Oki Earthquake (M9.0) Based on 5 Years of Seafloor and Terrestrial Geodetic Observation, AOGS 13th Annual Meeting, SE25-A006, Aug. 2016.

Poster presentation at international conference (not first author)

○Iinuma, T., M. Kido, T. Fukuda, Y. Ohta, F. Tomita, R. Hino, H. Takahashi, T. Hori, D. Sato, GNSS-Acoustic Observation Using the Wave Glider to Detect the Seafloor Crustal Deformation (5), JpGU Meeting 2024, SCG48-P01, Makuhari, May 2024.
○Iinuma, T., M. Kido, F. Tomita, T. Fukuda, R. Hino, T. Hori, K. Nakahigashi, H. Takahashi, T. No, Y. Nakamura, M. Ohzono, R. Plata-Martinez, D. Sato. GNSS-acoustic observations using manned and unmanned sea surface platforms along the Kurile-Japan Trench to grasp the interplate locking state and the postseismic deformation of the 2011 Tohoku-oki earthquake, 2023 AGU Fall Meeting, G43B-0490, San Francisco & Online, Dec, 2023.
○Plata-Martinez, R., T. Iinuma, F. Tomita, T. Nishimura, R. Agata & T. Hori, Slip deficit rate and slow earthquake distribution at the Nankai Trough, 2022 AGU Fall Meeting, T32D-0157, Chicago & Online, Dec. 2022.
○Iinuma, T., M. Kido, T. Fukuda, F. Tomita, Y. Ohta, C. Honsho, R. Hino. GNSS-Acoustic observation using the Wave Glider to detect the seafloor crustal deformation off the Pacific coast of Northeastern Japan, 2021 AGU Fall Meeting, G25B-0351, New Orleans & Online, Dec, 2021.
○Azuma, R., S. Kodaira, R. Hino, G. Fujie, K. Obana, F. Tomita, Y. Ohta. Crustal structure of the incoming Pacific Plate off Hokkaido, the southern Kuril Trench subduction zone, by an active-source seismic survey using dense linear OBS array, 2020 AGU Fall Meeting, T018-0004, online, Dec. 2020.
○Azuma, R., S. Kodaira, R. Hino, G. Fujie, K. Obana, F. Tomita, Y. Ohta. Active-source seismic study with a dense linear OBS array off Nemuro, the southern Kuril subduction zone, JpGU-AGU Joint Meeting 2020, SCG62-08, July 2020.
○Kimura, Y., M. Kido, Y. Ohta, C. Honsho, F. Tomita, Launch of GNSS-Acoustic observation for horizontal and vertical movements off Nemuro using a triangular PXP array with an optional centered-PXP, JpGU-AGU Joint Meeting 2020, MIS13-P01, July 2020.
○Iinuma, T., M. Kido, Y. Ohta, T. Fukuda, F. Tomita, R. Hino, I. Ueki, GNSS-Acoustic Observation Using the Wave Glider to Detect the Seafloor Crustal Deformation Associated with the Temporal Change in the Interplate Locking State, 2019 AGU Fall Meeting, T51H-0390, San Francisco, Dec. 2019.
Kido, M., J. Ashi, T. Tsuji, ○F. Tomita, Measuring Relative Motions Across a Fault Using Seafloor Transponders Installed at Close Range to Each Other Based on Differential GPS/Acoustic Technique, 2016 AGU Fall Meeting, T31C-2921, San Francisco, Dec. 2016.

Oral presentation at internal meeting (not first author)

○Iinuma, T., M. Kido, T. Fukuda, Y. Ohta, F. Tomita, R. Hino, H. Takahashi, T. Hori, Y. Yokota, Utilization of Unmanned Surface Vehicles in GNSS-Acoustic Observation Using to Detect the Seafloor Crustal Deformation, The 2024 SSJ Fall Meeting, S03-08, Niigata, Oct. 2024.
○Azuma, R., S. Kodaira, R. Hino, G. Fujie, K. Obana, F. Tomita, Y. Ohta, Crustal structure in the 17th century Kuril earthquake and its linkage to the occurrence of the large shallow slip, The 2023 SSJ Fall Meeting, S06-05, Yokohama, Oct. 2023.
○Iinuma, T., M. Kido, T. Fukuda, Y. Ohta, F. Tomita, Future Prospects for Seafloor Crustal Deformation Observation Using GNSS-Acoustic Observations with Wave Gliders, 140th Meeting of the Geodetic Society of Japan, 01, Sendai, Oct. 2023.
○Iinuma, T., M. Kido, T. Fukuda, Y. Ohta, F. Tomita, K. Ariyoshi, K. Nagano, R. Plata-Martinez, R. Hino, H. Takahashi, T. Hori, GNSS-Acoustic Observation Using the Wave Glider to Detect the Seafloor Crustal Deformation (2), 138th Meeting of the Geodetic Society of Japan, 12, Kagoshima, Oct. 2022.
○Kido, M., T. Iinuma, T. Fukuda, Y. Ohta, F. Tomita. Attitudes of a Wave Glider under various sea conditions, 138th Meeting of the Geodetic Society of Japan, 13, Kagoshima, Oct. 2022.
○Hori, T., T. Iinuma, F. Tomita, M. Kido, C. Honsho, R. Azuma, C. Tang, Y. Ohta, R. Nakata, R. Hino, M. Shinohara, S. Kodaira. Urgent observation of seafloor crustal movement and installation of seafloor seismographs in preparation for future earthquakes off the east coast of Aomori Prefecture, JpGU Meeting 2021, SSS08-23, Online, June 2021.
○Kido, M., T. Fukuda, Y. Ohta, F. Tomita, C. Honsho, T. Iinuma. Semi-realtime transmission of GNSS-A data using a Wave Glider, JpGU Meeting 2021, SCG45-16, Online, June 2021.
○Azuma, R., S. Kodaira, R. Hino, G. Fujie, K. Obana, F. Tomita, Y. Ohta, Interpretation for variation in the incoming Pacific Plate structure around the Kuril Trench axial region by an OBS/MCS seismic survey, JpGU Meeting 2021, SCG55-07, Online, June 2021.
○Iinuma, T., M. Kido, T. Fukuda, Y. Ohta, F. Tomita, R. Hino, GNSS-Acoustic Observation Using the Wave Glider to Detect the Seafloor Crustal Deformation (2), 2020 SSJ Fall Meeting, S03-09, Online, Oct. 2020.
Azuma, R., S. Kodaira, R. Hino, G. Fujie, K. Obana, F. Tomita, ○Y. Ohta, Crustal structure in the Kuril Trench subduction zone off Hokkaido, Japan, by a dense linear OBS-array seismic survey, 2020 SSJ Fall Meeting, S06-02, Online, Oct. 2020.
○Kimura, Y., M. Kido, Y. Ohta, C. Honsho, F. Tomita, Onset of GNSSAcoustic observation for horizontal and vertical movements off Nemuro region using a triangular PXP array with an optional centered-PXP, 134th Meeting of the Geodetic Society of Japan, 46, Online, Oct. 2020.
○Ohta, Y., M. Kido, R. Azuma, M. Sato, S. Suzuki, R. Yamamoto, H. Takahashi, Y. Kimura, H. Otsuka, C. Honsho, R. Hino, M. Ohzono, K. Okada, Y. Aota, H. Takahashi, S. Masanao, F. Tomita, T. Kanamatsu, K. Hsiung, T. Iinuma. Construction of the sea-floor geodesy network in Nemuro-Oki, the southwestern part of the Kuril Trench, 2019 SSJ Fall Meeting, S03-10, Kyoto, Sept. 2019.
○Iinuma, T., M. Kido, Y. Ohta, T. Fukuda, F. Tomita, I. Ueki. Preliminary Report of the GNSS-Acoustic Observation Using the Wave Glider to Detect the Seafloor Crustal Deformation, 2019 SSJ Fall Meeting, S03-11, Kyoto, Sept. 2019.
○Honsho, C., M. Kido, F. Tomita, N. Uchida, Offshore Postseismic Deformation of the 2011 Tohoku Earthquake Revisited: Application of an Improved GPS-Acoustic Positioning Method Considering Sloping Sound Speed Structure, JpGU Meeting 2019, SCG56-13, Makuhari, May 2019.
○Uchida, N., C. Honsho, F. Tomita, T. Matsuzawa, Roland Bürgmann, Episodic slow slip after the 2011 Tohoku-oki earthquake: Detection from repeating earthquakes, very low frequency earthquakes, and seafloor geodetic observations, 2018 SSJ Fall Meeting, S23-25, Koriyama, Oct. 2018.
○Matsui, R., M. Kido, C. Honsho, F. Tomita, Detecting gradient of sound speed in ocean by GPS-Acoustic technique, 128th Meeting of the Geodetic Society of Japan, 49, Mizunami, Oct. 2017.
○Iinuma, T., Y. Ohta, S. Miura, J. Muto, F. Tomita, M. Kido, R. Hino. Spatio-temporal variation of the postseismic deformation of the 2011 Tohoku Earthquake based on terrestrial and seafloor observations, JpGU-AGU Joint Meeting 2017, SSS04-28, May 2017.
○Kido, M., J. Ashi, T. Tsuji, F. Tomita, Detecting localized seafloor deformation using traveltime difference of acoustic signals of transponders nearby -Observation in the Japan Trench-, JpGU Meeting 2016, SGD23-09, Makuhari, May 2016.
○Ohyanagi, R., A. Hisamatsu, S. Watanabe, S. Ishibashi, H. Anzai, R. Kaneko, F. Tomita, S. Yamado, M. Kuri, 簡易アンケートによる小・中学生の防災意識の調査と「減災アクションカードゲーム」の効果測定, The 17th Meeting of Japan Society for Disaster Information Studies，C1-2, Kohu, Oct. 2015．
○Hino, R., R. Yamamoto, Y. Osada, M. Kido, S. Suzuki, Y. Ohta, T. Kubota, F. Tomita, Direct-path acoustic ranging across the Japan trench: Efforts to realize long-term, long-baseline, and multi-station observation, 124th Meeting of the Geodetic Society of Japan, 56, Fukuoka, Oct. 2015.
Kido, M., ○F. Tomita, Efficient observations for broad seafloor crustal deformation along the Japan trench, The 25th Ocean Engineering Symposium, OES25-119, Tokyo, Aug. 2015.

Poster presentation at internal meeting (not first author)

○Okayama, Y., K. Nakahigashi, M. Kido, F. Tomita, Array displacement estimation of seafloor crustal deformation observation by the training ship "Shioji Maru" of Tokyo University of Marine Science and Technology considering sound velocity gradient structure, JpGU Meeting 2023, SCG52-P02, Makuhari, May 2023.
○Azuma, R., S. Kodaira, R. Hino, G. Fujie, K. Obana, F. Tomita, Y. Ohta, Seismic structural characteristics illuminating a large shallow slip zone in the 17th-century Kuril earthquake, JpGU Meeting 2023, SSS08-P05, Makuhari, May 2023.
○Iinuma, T., M. Kido, T. Fukuda, Y. Ohta, F. Tomita, R. Plata-Martinez, R. Hino, H. Takahashi, T. Hori, GNSS-Acoustic Observation Using the Wave Glider to Detect the Seafloor Crustal Deformation (4), JpGU Meeting 2023, SSS12-P01, Makuhari, May 2023.
○Honsho, C., M. Kido, F. Tomita, R. Hino, Vertical seafloor movement after the 2011 Tohoku earthquake and remarkable uplift near the trench axis off Sanriku, JpGU Meeting 2021, SCG54-P03, Online, June 2021.
○Honsho, C., M. Kido, F. Tomita, Y. Ohta, H. Ichikawa, T. Ohashi, T. Kawakami. Improvements in GNSS-Acoustic analysis for the enhancement of positioning accuracy: application of phase-only correlation to travel time determination and positioning analysis considering the effect of earth tide. JpGU-AGU Joint Meeting 2020, SCG64-04, July 2020.
○Aota, H. , M. Ohzono, F. Tomita, H. Takahashi, Simple estimation of interplate coupling in the Kushiro-oki and the Nemuro-oki regions, eastern Hokkaido in Japan from onshore GNSS data, JpGU Meeting 2019, SSS16-P05, Makuhari, May 2019.
○Matsui, R. M. Kido, C. Honsho, F. Tomita, Spatially non-linear property of sound speed structure in GPS-acoustic measurement, JpGU Meeting 2018, SCG67-P03, Makuhari, May 2018.
○Honsho, C., M. Kido, & F. Tomita, Array positioning analysis of GPS-Acoustic observation data considering lateral gradient of the sound speed in seawater, JpGU Meeting 2018, SCG67-P02, Makuhari, May 2018.
○Matsui, R., M. Kido, C. Honsho, F. Tomita, Comparison between temporal variation of sound velocity derived from GPS/acoustic and CTD measurements, JpGU-AGU Joint Meeting 2017, MIS24-P03, Makuhari, May 2017.
○Honsho, C., M. Kido, F. Tomita, Evaluation of the sound speed equations for seawater proposed by Chen-and-Millero and Del-Grosso using GPS/Acoustic observation data, JpGU-AGU Joint Meeting 2017, MIS24-P03, May 2017.
○Yamamoto, R., R. Hino, M. Kido, Y. Ohta, T. Kubota, F. Tomita, K. Ohta, Y. Osada, Detecting a relative motion across the Japan Trench using precise acoustic ranging, JpGU Meeting 2016, SSS02-P01, May 2016.

Publications (EN)

Peer reviewed paper

Oral presentation at international conference (First author only)

Poster presentation at international conference (First author only)

Oral presentation at internal meeting (First author only)

Poster presentation at internal meeting (First author only)

Oral presentation at international conference (not first author)

Poster presentation at international conference (not first author)

Oral presentation at internal meeting (not first author)

Poster presentation at internal meeting (not first author)

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