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Session Proposal: Understanding geophysical processes that shape Earth’s mid-ocean ridges: Insights into crustal deformation, magmatic-tectonic construction and geodynamics (AGU25)

T025
Understanding geophysical processes that shape Earth’s mid-ocean ridges: Insights into crustal deformation, magmatic-tectonic construction and geodynamics

Session ID#: 251198

Session Description:
Mid-ocean ridges (MORs) are fundamental to the global plate tectonics, where new oceanic lithosphere is created and magmatic, tectonic, and hydrothermal processes interact to shape the seafloor. These environments exhibit different dynamic processes, including crustal deformation, faulting, volcano-tectonic construction, heat and chemical exchanges, and magnetic property variations. MORs also regulate heat and chemical fluxes between Earth's interior and the oceans, influencing global geodynamic cycles. However, our understanding of how these processes function and influence each other remains limited along MORs. This session invites observational, experimental, and modeling contributions that explore any aspect of geophysical processes along mid-ocean ridges. We welcome advances in real-time monitoring, automated data analysis, and the integration of observations from seafloor networks, cabled observatories, and satellite platforms. By bringing together a range of observational and modeling approaches, this session aims to highlight cross-disciplinary advances that illuminate the feedbacks driving MOR structure, evolution, and fluxes.
Co-Sponsor(s):
  • G - Geodesy
  • GP - Geomagnetism, Paleomagnetism and Electromagnetism
  • S - Seismology
  • V - Volcanology, Geochemistry and Petrology
Index Terms:

1517 Magnetic anomalies: modeling and interpretation [GEOMAGNETISM AND PALEOMAGNETISM]
8150 Plate boundary: general [TECTONOPHYSICS]
8178 Tectonics and magmatism [TECTONOPHYSICS]
8416 Mid-oceanic ridge processes [VOLCANOLOGY]
Primary Convener:  Vaibhav Vijay Ingale, Scripps Institution of Oceanography, University of California San Diego, La Jolla, United States
Conveners:  Evan Anderson, Scripps Institution of Oceanography, La Jolla, CA, United States and Julie A Bowles, University of Wisconsin Milwaukee, Geosciences, Milwaukee, WI, United States
Student/Early Career Convener:  Evan Anderson, Scripps Institution of Oceanography, La Jolla, CA, United States
 
Dynamics of magma reservoir before and after volcanic eruptions at the Axial Volcano in the Eastern Pacific using time-lapse seismic imaging method (1883530)
Yan Zhao1, Helene Delphine Carton2, Satish Chandra Singh1, Maryam Ardalan1 and Graham M Kent3, (1)Institut de Physique du Globe de Paris, Université Paris-Cité, Paris, France, (2)Université Paris Cité, Institut de Physique du Globe de Paris, CNRS, Paris, France, (3)University of Nevada Reno, Nevada Seismological Laboratory, Reno, United States
 
Abyssal peridotites: Robust probes of detachment extension at magma-starved ultraslow mid-ocean ridges (1883762)
Zhang Zhen1, Chuan-Zhou Liu2, Mark D Behn3 and Yin-Zheng Lin1, (1)Laoshan Laboratory, Ocean Sciences and Interdisciplinary Frontiers, Qingdao, China, (2)Institute of Geology and Geophysics, Chinese Academy of Sciences, State Key Laboratory of Lithospheric Evolution, Beijing, China, (3)Boston College, Earth and Environmental Sciences, Chestnut Hill, United States
 
A Comparison of Inflation and Seismicity Rates Before and Since the 2015 Eruption at Axial Seamount and Implications for Eruption Forecasting (Invited) (1897367)
William W. Chadwick Jr1, William S D Wilcock2, Scott L Nooner3, Jeffrey Beeson1 and Maochuan Zhang2, (1)Oregon State University, Cooperative Institute for Marine Ecosystem and Resource Studies (CIMERS), Newport, OR, United States, (2)University of Washington, School of Oceanography, Seattle, United States, (3)University of North Carolina at Wilmington, Dept of Earth and Ocean Sciences, Wilmington, NC, United States
 
A modular framework for processing and interpreting magnetic field data collected by underwater vehicles along mid-ocean ridges (1901491)
Vaibhav Vijay Ingale1, Jeffrey S Gee1 and Ross Parnell-Turner2, (1)Institute of Geophysics and Planetary Physics, Scripps Institution of Oceanography, University of California San Diego, La Jolla, United States, (2)Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, United States
 
Distributed Deformation on a Late-Stage Oceanic Detachment Fault at Mount Dent, Mid-Cayman Spreading Center (1915908)
Evan Anderson, Scripps Institution of Oceanography, La Jolla, CA, United States, Ross Parnell-Turner, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, United States and Robert A Sohn, Woods Hole Oceanographic Institution, Woods Hole, United States
 
Simulating Dynamic, Stress Dependent Diking at Mid-Ocean Ridges (1921622)
Daniel King1, Eric L Mittelstaedt1 and Garrett Ito2, (1)University of Idaho, Department of Earth and Spatial Sciences, Moscow, ID, United States, (2)University of Hawaii, Department of Earth Sciences, Honolulu, United States
 
Structure and Evolution of the 25° S Oceanic Core Complex at the Central Indian Ridge based on Traveltime Tomography using Downward Continued 2D Streamer Data (1924601)
Helene-Sophie Hilbert1, Martin Engels1, Michael Schnabel1, Thomas Fridrich1, Bettina Schramm1, Udo Barckhausen1, Ingo Heyde1, Stefan Ladage1, Ruediger Lutz1, Anke Dannowski2, Oscar H. Lücke2, Anna Jegen2 and Ingo Grevemeyer2, (1)BGR Federal Institute for Geosciences and Natural Resources, Hanover, Germany, (2)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
 
A Paleomagnetic Piece to the Structural Puzzle: Demagnetization Behavior of Borehole Samples from the Atlantis Massif, Mid-Atlantic Ridge (Invited) (1925577)
Ethan Lopes, Stanford University, Department of Geophysics, Stanford, CA, United States and Sonia Tikoo, Stanford University, Department of Geophysics, Stanford, United States
 
Linkages between large-scale caldera collapse, voluminous eruptions and extensive hydrothermal vent fields along the southeast portion of the caldera beneath Axial volcano, NE Pacific (1932052)
Graham Martin Kent1, Satish Chandra Singh2, Helene Delphine Carton3, Yan Zhou2, Han Wu4, Wenxin Xie2, Adrien F Arnulf5, Alistair J Harding6 and Scott L Nooner7, (1)University of Nevada Reno, Reno, NV, United States, (2)Institut de Physique du Globe de Paris, Université Paris-Cité, Paris, France, (3)Université Paris Cité, Institut de Physique du Globe de Paris, CNRS, Paris, France, (4)Sun Yat-Sen University, Guangzhou, China, (5)Amazon, San Diego, United States, (6)Scripps Institution of Oceanog, La Jolla, CA, United States, (7)University of North Carolina at Wilmington, Dept of Earth and Ocean Sciences, Wilmington, NC, United States
 
Modeling Dike Intrusion at the Beginning of the 2015 Eruption at Axial Seamount, Juan de Fuca Ridge (1934676)
Kendal Ward, 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 and William W. Chadwick Jr, CIMERS, Newport, United States
 
Evaluating the Impacts of Subaxial Melt Lenses on Seafloor Deformation at Axial Seamount (1944656)
Morgan Trotter1, Scott L Nooner1 and William Chadwick2, (1)University of North Carolina at Wilmington, Dept of Earth and Ocean Sciences, Wilmington, NC, United States, (2)Hatfield Marine Science Center, Oregon State University and NOAA/PMEL, Newport, United States
 
Using Geomagnetic Paleointensity to Constrain Eruptive Timing and Size on the Southern East Pacific Rise (1956646)
Terra Johnson, University of Wisconsin Milwaukee, Milwaukee, United States, Jeffrey S Gee, Univ California San Diego, La Jolla, CA, United States, Julie A Bowles, University of Wisconsin Milwaukee, Geosciences, Milwaukee, WI, United States, Rachel Kepler, Scripps Institution of Oceanography, La Jolla, CA, United States, V. Dorsey Wanless, WHOI, Woods Hole, United States, Jessica Sorsen, Boise State University, Boise, United States and Janine Andrys, Boise State University, Department of Geosciences, Boise, United States
 
Microseismicity of the Atlantis Massif Oceanic Core Complex Revealed by Grid-Search and Cross-Correlation Relocation Methods (1959259)
Peyton Dewaelsche and Jianhua Gong, Indiana University Bloomington, Bloomington, IN, United States
 
Towards Quantifying Eruptive Timing and Volcanic Processes at 17°20’ S on the Southern East Pacific Rise (1981198)
Julie A Bowles1, Jeffrey S Gee2, V. Dorsey Wanless3, Janine Andrys3, Michael Anderson4, Megan Ferrell5, Vaibhav Vijay Ingale6, Anna Golub7, Terra Johnson8, Maria Clara Rapoza9, Darin M Schwartz10, Catherine McLeod2, Jessica Sorsen11, Jyun-Nai Wu12, Vera Soltes4 and Ross Parnell-Turner7, (1)University of Wisconsin Milwaukee, Geosciences, Milwaukee, WI, United States, (2)University of California San Diego, La Jolla, United States, (3)Boise State University, Department of Geosciences, Boise, United States, (4)University of Wisconsin Milwaukee, Geosciences, Milwaukee, United States, (5)Scripps Institution of Oceanography, La Jolla, United States, (6)Scripps Institution of Oceanography, University of California San Diego, La Jolla, United States, (7)University of California San Diego, Scripps Institution of Oceanography, La Jolla, United States, (8)University of Wisconsin Milwaukee, Milwaukee, United States, (9)University of Idaho, Department of Earth and Spatial Sciences, Moscow, ID, United States, (10)Boise State University, Department of Geosciences, Boise, ID, United States, (11)Boise State University, Boise, United States, (12)Woods Hole Oceanographic Institution, Geology and Geophysics, Woods Hole, MA, United States
 
Insights into Caldera-Ridge Interactions and Eruption Preparation at Axial Seamount from Machine-Learning Analysis of Cabled and Temporary OBS data (1986711)
Meritxell Colet1, Kaiwen Wang2,3, Felix Waldhauser2, William S D Wilcock4, Maya Tolstoy5, Yen Joe Tan6 and David Paul Schaff2, (1)Columbia University, Department of Earth & Environmental Sciences, Palisades, NY, United States, (2)Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States, (3)Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China, (4)University of Washington Seattle Campus, School of Oceanography, Seattle, United States, (5)University of Washington, College of the Environment, Seattle, United States, (6)The Chinese University of Hong Kong, Department of Earth and Environmental Sciences, Hong Kong, Hong Kong
 
Changes in the physical properties of samples due to ageing, and the influence of sample shape on measurements taken during deep-seated rock drilling (1991931)
Natsue Abe, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama, Japan; Kanazawa University, Departement of Earth Sciences, Kanazawa, Japan
 
Faulting Processes at the Ridge-Transform Intersection of the Fast-Slipping Gofar Transform Fault (2000761)
Jianhua Gong, Indiana University Bloomington, Bloomington, IN, United States, Wenyuan Fan, Scripps Institution of Oceanography, La Jolla, United States, Jeffrey McGuire, Woods Hole Oceanographic Institution, Geology and Geophysics, Woods Hole, United States, Mark D Behn, Boston College, Earth and Environmental Sciences, Chestnut Hill, United States, Jessica M Warren, University of Delaware, Earth Sciences, Newark, DE, United States, Emily C Roland, Western Washington University, Geology Department and Marine and Coastal Sciences Program, Bellingham, WA, United States, Margaret S Boettcher, University of New Hampshire, Durham, NH, United States, John A Collins, WHOI, Woods Hole, MA, United States and Yajing Liu, McGill University, Department of Earth and Planetary Sciences, Montreal, QC, Canada
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