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Session Proposal: Seafloor Geodesy: Recent Technology Development and Research Advances (AGU25)

G018
Seafloor Geodesy: Recent Technology Development and Research Advances

Session ID#: 248256

Session Description:
Over two-thirds of Earth’s surface and eighty percent of all plate boundaries are under water.  This forms a natural barrier for direct application of space geodesy to measure seafloor motion and deformation. However, many critical Earth processes and infrastructure are underwater and require geodetic monitoring, including the sources of the largest earthquakes and tsunamis, underwater volcanoes, submarine landslides, and hydrocarbon pumping. Owing to the complex environments, seafloor geodesy is challenging and often expensive compared with its land counterpart, yet the techniques used hold the keys to answering many important scientific and engineering questions. Recent years have seen dramatic advancements in seafloor geodesy, paired with increasingly ambitious observational efforts. We invite presentations of the latest developments in seafloor geodetic methods, utilizing techniques such as GNSS-Acoustic ranging, direct or indirect-path acoustic ranging, spar buoys, ocean bottom pressure, tilt, strain, gravimetry, bathymetry, as well as other instrumental and analysis methods, and scientific applications.
Co-Sponsor(s):
  • NH - Natural Hazards
  • OS - Ocean Sciences
  • S - Seismology
  • T - Tectonophysics
Index Terms:

1209 Tectonic deformation [GEODESY AND GRAVITY]
1222 Ocean monitoring with geodetic techniques [GEODESY AND GRAVITY]
1294 Instruments and techniques [GEODESY AND GRAVITY]
7215 Earthquake source observations [SEISMOLOGY]
Primary Convener:  Surui Xie, University of Houston, Civil and Environmental Engineering, Houston, TX, United States
Conveners:  Shun-ichi Watanabe, Japan Coast Guard, Tokyo, Japan and Andrew Vern Newman, Georgia Institute of Technology, Atlanta, United States
Student/Early Career Convener:  Lingchao He, University of Rhode Island, Graduate School of Oceanography, Narragansett, United States
 
Can Less Be More? Assessing the Potential of Sparse ICESat-2 Data for Accurate Coastal Bathymetry Mapping (1851440)
Hsiao Jou Hsu, Ohio State University Main Campus, School of Earth Sciences, Geodetic Science, Columbus, OH, United States and Joachim Moortgat, Ohio State University Main Campus, School of Earth Sciences, Columbus, OH, United States
 
Evaluation of Self-Calibrating Pressure Gauges for Seafloor Geodesy: Instrument Comparisons at Axial Seamount (1866488)
Yoichiro Dobashi1, William S D Wilcock1, Dana Manalang2, Kira Smith2, Liv Dentoni3, Glenn S Sasagawa4, Mark A Zumberge5, Matthew James Cook4, William Chadwick Jr.6, Jeffrey Beeson7 and Scott L Nooner8, (1)University of Washington Seattle Campus, School of Oceanography, Seattle, United States, (2)Applied Physics Laboratory University of Washington, Seattle, United States, (3)Mount Holyoke College, South Hadley, MA, United States, (4)University of California San Diego, Scripps Institution of Oceanography, La Jolla, United States, (5)University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States, (6)Oregon State University, Corvallis, United States, (7)Oregon State University, Cooperative Institute for Marine Ecosystem and Resource Studies (CIMERS), Newport, OR, United States, (8)University of North Carolina at Wilmington, Dept of Earth and Ocean Sciences, Wilmington, NC, United States
 
Assessing the Use of a Cabled Bottom Pressure Recorder as a New Reference Site for Mobile Pressure Recorder Surveys at Axial Seamount (1867789)
Camille Sullivan, University of North Carolina at Wilmington, Wilmington, NC, United States, Scott L Nooner, University of North Carolina at Wilmington, Dept of Earth and Ocean Sciences, Wilmington, NC, United States, William Chadwick Jr., Oregon State University, Corvallis, United States, Glenn S Sasagawa, University of California San Diego, Scripps Institution of Oceanography, La Jolla, United States, Matthew James Cook, University of California, San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States and Jeffrey Beeson, Oregon State University, Cooperative Institute for Marine Ecosystem and Resource Studies (CIMERS), Newport, OR, United States
 
Implementation plan and prior capability assessment of quick GNSS-A for urgent observations (1878198)
Shun-ichi Watanabe1, Kei Imuta1, Tadashi Ishikawa1 and Yusuke Yokota2, (1)Japan Coast Guard, Hydrographic and Oceanographic Department, Tokyo, Japan, (2)University of Tokyo, Institute of Industrial Science, Bunkyo-ku, Japan
 
Bathymetry Monitoring to Detect Seafloor Crustal Deformation Using Autonomous Underwater and Surface Vehicles (1889177)
Takeshi Iinuma1, Eiichiro Araki2, Kensuke Watari3, Takuya Shimura3, Yuya Machida1 and Toshiya Fujiwara2, (1)Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Research Institute for Marine Geodynamics, Yokohama, Japan, (2)Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Research Institute for Marine Geodynamics, Yokosuka, Japan, (3)Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Research Institute for Marine Technology and Engineering, Yokosuka, Japan
 
What is the origin of the slight shortening across the Kuril trench off Nemuro observed by Acoustic Distance Meter (1890447)
Shotaro Matsumoto, Tohoku University Graduate School of Science, Sendai, Miyagi, JAPAN, Motoyuki Kido, Tohoku University, International Research Institute of Disaster Science, Sendai, Japan, Yusaku Ohta, Tohoku University, Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Sendai, Japan and Ryota Hino, Tohoku University, Graduate School of Science, Sendai, Japan
 
Seafloor Velocities in Alaskan Subduction Zone: Initial Results From GNSS-A (1899915)
Surui Xie, University of Houston, Civil and Environmental Engineering, Houston, TX, United States, John Boone DeSanto, University of Washington, Department of Earth and Space Sciences, Seattle, United States, Noel M Jackson, University of Kansas, Lawrence, KS, United States, Andrew Vern Newman, Georgia Institute of Technology, Atlanta, United States, Glenn S Sasagawa, University of California San Diego, Scripps Institution of Oceanography, La Jolla, United States, David A Schmidt, University of Washington Seattle, Department of Earth and Space Sciences, Seattle, United States, Spahr C Webb, Lamont Doherty Earth Observatory, Palisades, NY, United States and Mark A Zumberge, University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States
 
Transient Tilt Variations Observed by Borehole Tiltmeters Installed in the Nankai Trough, Japan (1903859)
Shuhei Tsuji, JAMSTEC Japan Agency for Marine-Earth Science and Technology, Kanagawa, Japan, Eiichiro Araki, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Research Institute for Marine Geodynamics, Yokosuka, Japan, Yuya Machida, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Research Institute for Marine Geodynamics, Yokohama, Japan and Takeshi Iinuma, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Research Institute for Marine Geodynamics, Kanagawa, Japan
 
Development of a Fiber-Optic Strain Observation Network across the Nankai Trough Megathrust Seismogenic Zone (Invited) (1906361)
Eiichiro Araki1, Takashi Yokobiki2, Mark A Zumberge3, Yojiro Yamamoto4, Yuya Machida5, Hiroyuki Matsumoto2, Shuhei Tsuji6 and Shuhei Nishida1, (1)Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Research Institute for Marine Geodynamics, Yokosuka, Japan, (2)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan, (3)University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States, (4)Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama, Japan, (5)Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Research Institute for Marine Geodynamics, Yokohama, Japan, (6)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Kanagawa, Japan
 
Detecting Long-Term Crustal Deformation from Continuous Seafloor Pressure Records in the Nankai Trough (1906525)
Yuya Machida1, Shuhei Nishida2, Hiroyuki Matsumoto1 and Eiichiro Araki2, (1)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan, (2)Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Research Institute for Marine Geodynamics, Yokosuka, Japan
 
Deep-water Steep-gradient GNSS-Acoustic Experiment Along the Rupture Area of the 1946 Aleutian Tsunami Earthquake (1917093)
Andrew Vern Newman1, Surui Xie2, Mark A Zumberge3, Nathalie Chavarria4, Glenn S Sasagawa5, Dennis Rimington6 and Dave Price6, (1)Georgia Institute of Technology, Earth and Atmospheric Sciences, Atlanta, GA, United States, (2)University of Houston, Civil and Environmental Engineering, Houston, TX, United States, (3)University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States, (4)Georgia Institute of Technology, Atlanta, United States, (5)University of California San Diego, Scripps Institution of Oceanography, La Jolla, United States, (6)Scripps Institution of Oceanography, Marine Physical Lab, La Jolla, CA, United States
 
Research of high-precision and high-frequency GNSS-A technology using new UAVs and USVs (1926507)
Yusuke Yokota, University of Tokyo, Institute of Industrial Science, Bunkyo-ku, Japan
 
Laboratory Evaluations of an A-0-A Calibrated Pressure Instrument for the Cascadia Offshore Subduction Zone Observatory (1927953)
Liv Dentoni1, Yoichiro Dobashi2, Dana Manalang3, Kira Smith3 and William S D Wilcock2, (1)Mount Holyoke College, South Hadley, MA, United States, (2)University of Washington Seattle Campus, School of Oceanography, Seattle, United States, (3)Applied Physics Laboratory University of Washington, Seattle, United States
 
Insights into the Recent Inflation of Axial Seamount from Horizontal Seafloor Geodesy (1930894)
Maleen Kidiwela, University of Washington School of Oceanography, Seattle, WA, UNITED STATES, William S D Wilcock, University of Washington Seattle Campus, School of Oceanography, Seattle, United States and Dana Manalang, Applied Physics Laboratory University of Washington, Seattle, United States
 
Evaluation of Long-Term Stability of Pressure Gauges for Seafloor Deformation Measurement in the Nankai Trough, Japan (1938564)
Hiroyuki Matsumoto1, Eiichiro Araki2, Shuhei Nishida2, Dr. Keisuke Ariyoshi3 and Yuya Machida1, (1)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan, (2)Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Research Institute for Marine Geodynamics, Yokosuka, Japan, (3)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan
 
Time-lapse Microgravity for Tracking Fluid Accumulation and Release at Slow Earthquake Hotspots on the Nankai Trough Plate Interface (1940173)
Siri Vassvåg1, Toshiya Fujiwara2, Shuhei Nishida2, Felix Julian Halpaap1 and Reach Subsea and JAMSTEC offshore crew, (1)Reach Subsea, Monitoring Division, Bergen, Norway, (2)Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Research Institute for Marine Geodynamics, Yokosuka, Japan
 
Seafloor geodetic measurements of deformation of Kīlauea’s submarine flank (1944607)
James H Foster, University of Stuttgart, Institute of Geodesy, Stuttgart, Germany, Bridget R Smith-Konter, Northern Arizona University, School of Earth and Sustainability, Flagstaff, United States, Mark A Zumberge, University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States, Gregor Umhoefer, University of Hawaii at Mānoa, Department of Earth Sciences, Honolulu, United States, Kaj M Johnson, Indiana University, Department of Earth and Atmospheric Sciences, Bloomington, United States and Glenn S Sasagawa, University of California San Diego, Scripps Institution of Oceanography, La Jolla, United States
 
Monitoring the North Anatolian Fault beneath the Sea of Marmara at the west of Central High using acoustic extensometers (1981857)
Motoyuki Kido, Tohoku University, International Research Institute of Disaster Science, Sendai, Japan, Narumi Takahashi, National Research Institute for Earth Science and Disaster Resilience, Tsukuba, Japan, Yojiro Yamamoto, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama, Japan, Dogan Kalafat, Kandilli Observatory, Kandilli Observatory and Earthquake Research Institute-Department of Geodesy, Istanbul, Turkey, Haluk Ozener, Ministry of Interior, Governership of Istanbul, Disaster and Emergency Directorate (AFAD), Istanbul, Turkey and YoshiYuki Kaneda, Kagawa University, Kagawa, Japan
 
First Results from the IDOOS Offshore Geodetic Experiment Reveal Near-Trench Interplate Coupling in Northern Chile (Invited) (1988229)
Marcos Moreno1, Dietrich Lange2, Oscar Pizarro3, Osvaldo Ulloa3, Juan Carlos CARLOS Baez Sr4, Juan Lorenzo Diaz-Naveas5, Daniel Melnick6, Valeria Cortes-Rivas7, Nadin Ramirez3, Isabel Urrutia8, Arne Warwel2, Francisco Ortega-Culaciati9, Meng (Matt) Wei10, Erik K Fredrickson11 and Heidrun Kopp2, (1)Pontificia Universidad Católica de Chile, Deparment of Structural and Geotechnical Engineering, Instituto Milenio de Oceanografia (IMO), Santiago, Chile, (2)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (3)Instituto Milenio de Oceanografia (IMO), Universidad de Concepcion, Concepcion, Chile, (4)University of Chile, Geophysics, Santiago, Chile, (5)Pontifical Catholic University of Valparaíso, Valparaiso, Chile, (6)Universidad Austral de Chile, Instituto de Ciencias de la Tierra, Valdivia, Chile, (7)Pontificia Universidad Católica de Chile, Deparment of Structural and Geotechnical Engineering, Santiago, Chile, (8)Instituto Milenio de Oceanografia (IMO), Universidad de Concepcion, Concepción, Chile, (9)University of Chile, FCFM - Department of Geophysics, Advanced Mining Technology Center, Santiago, Chile, (10)University of Rhode Island Narragansett Bay, Narragansett, United States, (11)University of Texas at Austin, Institute for Geophysics, Austin, United States
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