TY - GEN
T1 - Seafloor Crustal Deformation Observations Utilizing Unmanned Surface Vehicles for Monitoring Fault Locking and Sliding Processes at Subduction Zone Plate Boundaries
AU - Iinuma, Takeshi
AU - Kido, Motoyuki
AU - Fukuda, Tatsuya
AU - Ohta, Yusaku
AU - Tomita, Fumiaki
AU - Hino, Ryota
AU - Takahashi, Hiroaki
AU - Hori, Takane
AU - Yokota, Yusuke
N1 - Publisher Copyright:
© 2025 IEEE.
PY - 2025
Y1 - 2025
N2 - While positioning on the seafloor is difficult by means of the global navigation satellite system (GNSS), GNSS-Acoustic (GNSS-A) technique is a powerful tool to detect the seafloor crustal deformation associated with mega-thrust earthquakes that occur in the plate subduction zones. We have been using an unmanned surface vehicle (USV), Wave Glider, as a sea surface platform to perform GNSS-A observations since 2019 and detected the post-seismic deformation of the 2011 Tohoku-oki earthquake along the Japan Trench. Based on the knowledge obtained from the months-long observation campaigns conducted since 2020, the performance required of USVs to perform GNSS-A observations and future prospects are summarized.
AB - While positioning on the seafloor is difficult by means of the global navigation satellite system (GNSS), GNSS-Acoustic (GNSS-A) technique is a powerful tool to detect the seafloor crustal deformation associated with mega-thrust earthquakes that occur in the plate subduction zones. We have been using an unmanned surface vehicle (USV), Wave Glider, as a sea surface platform to perform GNSS-A observations since 2019 and detected the post-seismic deformation of the 2011 Tohoku-oki earthquake along the Japan Trench. Based on the knowledge obtained from the months-long observation campaigns conducted since 2020, the performance required of USVs to perform GNSS-A observations and future prospects are summarized.
KW - GNSS-Acoustic technique
KW - Mega-thrust earthquake
KW - Plate subduction zone
KW - Seafloor crustal deformation
KW - Unmanned Surface Vehicle
UR - http://www.scopus.com/inward/record.url?scp=105003172441&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=105003172441&partnerID=8YFLogxK
U2 - 10.1109/UT61067.2025.10947368
DO - 10.1109/UT61067.2025.10947368
M3 - Conference contribution
AN - SCOPUS:105003172441
T3 - 2025 IEEE Underwater Technology, UT 2025
BT - 2025 IEEE Underwater Technology, UT 2025
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2025 IEEE Underwater Technology, UT 2025
Y2 - 2 March 2025 through 5 March 2025
ER -