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Ocean Mantle Dynamics: from Spreading Center to Subduction Zone

Update: 10. 17, 2011

(Oct. 4-6, 2011)


Date: October. 4. 2011 ( Tue ) 8:00 ~ 17:30
          October. 5. 2011 ( Wed ) 8:00 ~ 17:30
          October. 6. 2011 ( Thu ) 8:00 ~ 17:30

Venue: Auditorium
             Atmosphere and Ocean Research Institute, The University of Tokyo
             5-1-5 Kashiwanoha, Kashiwa-shi,Chiba 277-8564, JAPAN Tel: +81-4-7136-6011

Organizing Committee:
              Nobukazu Seama, Kobe University, seama (Chair)
              Douglas A. Wiens, Washington University, USA (Co-Chair)
              Alan D. Chave, Woods Hole Oceanographic Institution, USA
              Douglas R. Toomey, University of Oregon, USA
              Pascal Tarits, UBO – IUEM, France
              Wayne C. Crawford, Institut de Physique du Globe de Paris, France
              John Chen, Peking University, China

Local Organizing Committee:
              Nobukazu Seama, Kobe University (Chair)
              Kyoko Okino, AORI, University of Tokyo (Co-Chair)
              Eiichi Takazawa, Niigata University (Chief Field Trip Coordinator)
              Tomoaki Morishita, Kanazawa University (Field Trip Coordinator)
              Katsuyoshi Michibayashi, Shizuoka University (Field Trip Coordinator)
              Takashi Sawaguchi, Toyo University (Field Trip Coordinator)
              Takeshi Tsuji, Kyoto University Kiyoshi Baba, ERI, University of Tokyo Takehi Isse, ERI, University of Tokyo

Contact Person at AORI:
              Kyoko Okino, AORI, University of Tokyo, okino

Oct. 4 ( Tue )

8:00- Registration

8:50 - 12:15 Opening
Session 1: Structure of ocean lithosphere and asthenosphere
Shuichi Kodaira  Oceanic crust, mantle and Moho - new insights from active-source seismic study -

Catheline Rychert  Imaging the Lithosphere-Asthenosphere Boundary beneath the Pacific using SS Waveform Modeling

Hitoshi Kawakatsu  "Seismological views on the oceanic asthenosphere and the LAB above"
Donald Forsyth  "Surface wave studies of the evolution of the oceanic lithosphere and asthenosphere"
Kiyoshi Baba  "Variation in electrical conductivity of oceanic upper mantle with the lithospheric age"
Viatcheslav Solomatov and Satoru Honda  "Grain size evolution beneath the oceanic lithosphere and subducting slabs:Implications for seismology and geodynamics"

13:15 - 17:30
Ulrich Faul et al. Takashi Yoshino  "Lithospheric Structure from Combined Seismological and Experimental Models Origin of lithosphere-asthenosphere boundary inferred from laboratory conductivity measurements"
Shun-ichiro Karato  "Partial melting at 410- and 70-km and the origin of the asthenosphere"

Questions and Discussions for Session 1

Session 2: Melt migration beneath the spreading axis to form oceanic crust
Yasuhiko Ohara  "A Shinkai diving expedition to Godzilla Megamullion: geology of a dying backarc spreading segment"

Short oral presentations for posters

Oct. 5 ( Wed )

8:30 - 11:45
Session 2: Melt migration beneath the spreading axis to form oceanic crust (continued)
Alan D. Chave  "An overview of magnetotelluric sounding in active tectonic regimes: progress and prospects"
Pascal Tarits  "3-D imaging of the MELT mantle"
Douglas R. Toomey  "A New View of Mantle Flow, Melt Migration and Crustal Construction at the East Pacific Rise"
Wayne C. Crawford  "Geophysical constraints on the magma feeding and structure of Lucky Strike segment and volcano, Mid Atlantic Ridge  
Kyoko Okino  "Oceanic detachments: implication for spacial and temporal variation of melt supply"
Peter Michael  "H2O Contents in MORB: Implications for Mantle Sources and Mantle Dynamics"

Poster session core time 1

Eiichi Takazawa  "Formation and evolution of oceanic lithospheric mantle inferred from the Oman ophiolite"
Eric Hellebrand  "The Role of Inherited Depletion in the Oceanic Mantle: Direct Evidence from Abyssal Peridotites"
Shiki Machida  "Geochemical constraints on the rule of melt production along the Central Indian Ridge interacting with the Réunion hotspot"
Laurent Montesi  "Melt Migration and Focusing at Mid-Ocean Ridges from Microscopic to Segment Scale"

Questions and Discussions for Session 2

Session 3: Role of water especially for subduction and back-arc spreading dynamics
Hikaru Iwamori  "Fluid processes in subduction zones and water subduction to deep mantle"

19:00- Conference Dinner

Oct. 6 ( Thu )

8:30 - 11:45
Session 3: Role of water especially for subduction and back-arc spreading dynamics (continued)

Ikuo Katayama  "Permeability anisotropy of serpentinite and fluid pathways in a subduction zone"
Katherine Kelley  "The influence of water on magma generation and mantle conditions beneath arcs and back-arc basins"
Kenji Mibe  "Electrical conductivity of Serpentinites and the Stability Fields of Aqueous Fluid, Silicate Melt, and Supercritical Fluid in Subduction Zones"
Dapeng Zhao  "Seismic imaging of the Japan subduction zone"
Junichi Nakajima  "Seismic imaging of slab structure and its relation to seismicity"
Takehi Isse et al.  "Anisotropic structures of the upper mantle beneath the northern Philippine Sea region from Rayleigh and Love wave tomography"

Poster session core time 2
Taras Gerya  "Initiation and origin of orthogonal oceanic spreading patterns (through Skype as a part of poster session)"

Douglas A. Wiens  "Seismological constraints on melt production, volatile cycling, and mantle flow in the Mariana island arc"
Nobukazu Seama  "Comparison among available electrical conductivity structural images beneath back-arc and mid-ocean ridge spreading centers"
Teh-Ru Alex Song  "Global Subducting Slab Entrainment of Oceanic Asthenosphere: Re-examination of Sub-Slab Shear-Wave Splitting Patterns"

Donna Blackman  "Keynote on Modeling mantle flow in backarc wedge"

Questions and Discussions for Session 3

Closing Remarks including announcement of InterRidge Student Prize

END of the meeting

The title of each talk may be changed.



Research meeting