2013 Webinar Series: Margins Scientific Highlights

These 1-hour webinars will communicate the scientific highlights of the four MARGINS initiatives. Presentations will be followed by mediated questions and discussion. They will be held throughout the month of February.

Capacity is limited to 40 people, on a first come, first served basis.
These events have already occurred, registration is closed.

Rebecca J. Dorsey, Department of Geological Sciences, University of Oregon
A Decade of Research Findings about Rupturing Continental Lithosphere (RCL)

Thursday, Feb 28
10:30-12 PST | 11:30-1 MST | 12:30-2 CST | 1:30-3 EST
  • Role of magmatism in rifting: controls on rift architecture, crustal composition, strain localization, upper mantle structure and viscosity
  • Feedbacks between sedimentation, rift architecture, and melting: influence of sediments on thermal blanketing, melt flux, fault stresses, structural evolution
  • Distribution of strain through space and time: role of plate-motion obliquity, microplate coupling, strain partitioning, controls on strain localization
  • A new type of continent-ocean transition: recognizing the importance of heavily sedimented rifted margins

Lonnie Leithold, North Carolina State University
A Decade of Research Findings about Source to Sink Research (S2S)

Monday, Mar 4
10:30-12 PST | 11:30-1 MST | 12:30-2 CST | 1:30-3 EST

  • Demonstrations of the effects of anthropogenic changes in land-use at the Waipaoa margin (NZ) , i.e., significant increase in sediment production that has rapidly shifted the locus of offshore deposition
  • Numerical models to predict self-organization of Fly River delta distributary channels in response to interaction of the measured fluvial and tidal regimes
  • Quantitative modeling showing the response of sediment routing on the Fly and Strickland Rivers (PNG) to sea level rise since the Last Glacial Maxima (LGM)

J. Casey Moore, Earth and Planetary Sciences, University of California, Santa Cruz
A Decade of Research Findings about the Seismogenic Zone Experiment (SEIZE)

Tuesday, Mar 5
12-1:30 PST | 1-2:30 MST | 2-3:30 CST | 3-4:30 EST
  • Detailed imaging of megasplay fault system from 3D seismic data of Nankai Trough
  • Properties of the subduction megathrust and their relationships to seismicity and great earthquakes
  • Constraints on the nature of the updip limit of subduction zeismogenic zones
  • Identification of pore pressure transients associated with seismicity
  • Site surveys for future drilling at Nankai (and new IODP drilling results)

Robert J. Stern, Geosciences Department, University of Texas at Dallas
A Decade of Research Findings about Subduction Factory Studies (SubFac)

Wednesday, Mar 13
10:30-12 PST | 11:30-1 MST | 12:30-2 CST | 1:30-3 EST

  • Improved understanding of mantle melting, volatile cycling, and materials fluxes
  • Measured volatile contents of arc magmas and volatile fluxes out of arcs, and improved understanding of their relationships to progressive dehydration
    reactions in subducted materials
  • Numerical models to predict thermal structure and flow field in subduction zone
  • Advanced understanding of the interconnectivity of metamorphism, mantle wedge flow, and arc magmatism

Technical Information

We will use Adobe Connect for presentations, screen sharing, and instant chat.

Audio will be through a conference call line.

Each webinar will be followed by online discussions. You will need a SERC account to participate in these discussions.

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