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The NSF MARGINS Concept

The NSF MARGINS Concept. Broad focus: evolution of continental margins. Interdisciplinary Initiatives developed from community workshops 1988-2000 All “cross the shoreline” Active processes Focus Sites concentrate resources The Machinery:

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The NSF MARGINS Concept

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  1. The NSF MARGINS Concept Broad focus: evolution of continental margins • Interdisciplinary Initiatives developed from community workshops 1988-2000 • All “cross the shoreline” • Active processes • Focus Sites concentrate resources The Machinery: • Independent NSF Panel funds all science proposals: reviewed, competitive • Steering Committee (MSC) represents Community • Logistics and coordination: MARGINS Office www.nsf-margins.org

  2. A Global Program • All Focus Sites are outside the U.S. • Many have major International Partners • Diverse sets of data • Onshore and Marine • Geophysical, Geological, Geochemical, … • Archival and Real-time The program only succeeds through international engagement

  3. Funding Summary • 82 projects, 110 PI’s • $5-6 M/yr • in all four Initiatives • Many data types, onland, marine, … (through FY07)

  4. Initiatives • SubFac: The Subduction Factory • SEIZE: Seismogenic Zone Experiment • S2S: Sediment Source to Sink • RCL: Rupturing Continental Lithosphere SEIZE RCL SubFac SubFac, SEIZE S2S Focus Sites

  5. Four Initiatives • How do continents grow? • composition: The Subduction Factory • mechanics: Seismogenic Zone Experiment • How do continental margins change? • material transport: Sediment Source to Sink • mechanics: Rupturing Continental Lithosphere

  6. Seismogenic Zone Sediment Source-to-SInk • Nature and genesis of large subduction-zone thrust earthquakes and the faults that make them • Production, transport & storage of sediments & solutes from source to sink S2S SEIZE Gulf of Papua Waipaoa, N.Z. Nankai Central America Initiatives & Focus Sites

  7. Initiatives & Focus Sites Rupturing Continental Lithosphere • Driving forces for rift initiation, propagation and evolution, from continent to ocean basin RCL Gulf of California/Salton Trough Allied: Red Sea Subduction Factory • The cycling of material, fluids, and energy from trench to arc and deep earth; growth of continents SubFac Central America Izu-Bonin-Mariana Allied: Cascadia, Aleutians

  8. Central America Izu-Bonin-Marianas Central America Nankai Fly/Papua (New Guinea) Waipaoa (New Zealand) Gulf of California / Salton Trough Themes and Initiatives • How do continents grow? • composition: The Subduction Factory • mechanics: Seismogenic Zone Experiment • How do continental margins change? • material transport: Sediment Source to Sink • mechanics: Rupturing Continental Lithosphere

  9. Initiatives: SubFac Subduction Factory Energy, mass & chemical balances; effect on continental growth and evolution Subduction parameters as forcing functions: production of magma and fluid Volatile cycles and chemical, physical & biological processes - trench to deep mantle SubFac Izu-Bonin-Mariana Central America Allied: Cascadia, Aleutians Major workshops: 1998, 2000 Six Site and Topical workshops 3 Monographs or Special Issues

  10. TUCAN Seismic Deployment • 48 broadband seismographs • main lines sample range in volcano geochemistry • 7/2004 - 3/2006 • BU, Brown, OVSICORI, INETER

  11. SubFac Highlights: Crustal imaging & magmatic additions to arcs Mariana joint US-Japan active/passive imaging: 1st papers (Takahashi et al., 2006) Costa Rica (Holbrook, Lizarralde et al.): onshore 2005, offshore winter 2007-8

  12. IBM 2000-2007:17 funded projects,29 awards • 4 geophysics • 3 marine geology • 10 geochemistry/petrology Related MARGINS Efforts • 10 experimental, lab, modeling • 7 relevant workshops (99 - 07) • Anatahan rapid response

  13. Initiatives: SEIZE Seismogenic Zone Controls on seismic energy release during Earthquakes Temporal relationships among stress, strain, pore fluid pressure thru seismic cycle Controls on locked, unlocked regions on subduction interface Propagation, slip rates and distribution of fast, slow, tsunamigenic earthquakes SEIZE Nankai Central America Major workshops in 1997, 2003, 2008 NanTroSeize drilling started Sept 2007 2007 Seismogenic Zone Volume

  14. NanTroSEIZE Phase Idrilling started Sept 07 • 2006: 3D site survey • now: Chikyu non-riser • soon: many legs G. Moore et al., in press 3D imaging: Splay faults & tsunamis

  15. Initiatives: S2S What controls production, transport & storage of sediments & solutes from source to sink? (tectonics-climate-humans) What processes initiate erosion & sediment transfer, and what are critical feedbacks? How do sedimentary processes interact with tectonics, climate & human effects to build a stratigraphic record? Source-to-Sink Waipaoa Fly-Gulf of Papua 1st awards 2003 Major TEI: 2006 2 upcoming Special Issues complementary CSDMS modeling facility

  16. S2S: Waipaoa sediment budget in space and time Sediment Budget Using 210Pb Accumulation Rates Human activities & sed. flux courtesy S. Kuehl

  17. Initiatives: RCL What forces drive rift initiation, propagation and evolution? How does deformation vary in time & space, and why? How does crust evolve, physically & chemically, as rifting proceeds to spreading? What is role of magmatism and fluids in continental extension? Rupturing Continental Lithosphere Gulf of California/Salton Trough Allied: Red Sea; Focus Site pre-2006 Major workshops: 2000, 2006 2 thematic Monographs AGU workshop 2007

  18. GoC: 8 (19) projects (awards) others: 7 (11) (Red Sea, Lab, …) 5 major workshops 00-07 RCL/Gulf of CA 2000-2007

  19. Central American Subduction System(Alvarado, Hoernle & Silver, eds.) Special Theme G-Cubed, accepting contributions 2007-2008 Waipaoa S2S (Kuehl & Carter, eds.) Spec. Issue Marine Geology, Expected Publication late 2008 Papuan Continuum: S2S (Nittrouer, Slingerland, & Dickens, eds.) Spec. Issue JGR-Earth Surface, publ. winter 2007-2008 Arenal Volcano, Costa Rica, Special Issue (Gill, Reagan, Tepley & Malavassi, eds.) J. Volcanol. Geotherm. Res., 2006 2003 Anatahan Eruption Special Issue (Hilton, Pallister & Pua, eds.) J. Volcanol. Geotherm. Res., 2005 The Seismogenic Zone of Subduction Thrust Faults (Dixon & Moore, eds.), Columbia Univ. Press, Sept. 2007. Imaging …. Continental Lithosphere Extension and Breakup (Karner, Manatschal & Pinheiro, eds.), Geol. Soc. SP 282, 2007. Rheology and Deformation of Lithosphere at Continental Margins (Karner, Taylor, Driscoll & Kohlstedt, eds.), Columbia U. Press, 2004. Inside the Subduction Factory(Eiler, ed.), AGU Monogr. 138, 2004. Special Volumes and Books

  20. Nature/Science papers: International Partnerships & MARGINS-funded work RCL PESCADOR Mexico U.K. SEIZE NanTroSEIZE Japan SubFac TUCAN Germany Costa Rica Nicaragua Nature, in press, Dec. 2007 Geochemical and Geophysical Evidence for Arc-Parallel Flow in the Mantle Wedge Beneath Costa Rica and Nicaragua K. Hoernle1,2, D. L. Abt3, K. M. Fischer3, H. Nichols1, F. Hauff2, G. A. Abers4, P. van den Bogaard1,2, K. Heydolph1, G. Alvarado5, J. M. Protti6, W. Strauch7

  21. Events in 2007 • New projects funded in all Initiatives • As of FY07: 138 grants, 85 projects, ~110 PI’s • Science Progress • Start of NanTroSEIZE Drilling • Special Volumes & Issues • several major papers from MARGINS-funded data • Major workshops • March, Monterey: EarthScope/Geoswath coordination • April, Arlington VA: Mini-Lesson Development • May, Kiel: International Data Access (with R2k, InterMARGINS...) • June, Costa Rica: Central America Synthesis (with SFB-574) • Nov, Honolulu: IBM Integration & Synthesis (with IFREE) • Dec, San Francisco: RCL Future • CCLI-undergraduate Mini-Lesson program starts • Organizers: C. Manduca, D. Reed, J. Ryan, MARGINS

  22. Coming Up in 2008 • Workshops • September, Portland: The SEIZE Decade (proposed) • April, Arlington VA: Steering Committee / Planning • Planning/Review: stay tuned… (www.nsf-margins.org) • Year 3 Distinguished Lecture Program • ~65 schools applied • 8 speakers, visiting half • Continued Educational Program Growth • web-based Mini-Lessons (Ryan, Reed, Manduca)

  23. 2009 Decadal Review • MARGINS has a 10-year Science Plan • Required: Review • demonstrate success of coordinated program • foster synthesis • Optional: Build a successor program • what big questions drive future research? • is a focused program needed, why not rely upon core funding? • how should program be structured?

  24. 2007 Workshops Thanks to many Organizers…

  25. Office Activities • Recent & Planned Workshops • Sept. 2006: S2S TEI, Teleconnections • March 2007: Joint EarthScope/MARGINS activities • June 2007: Costa Rica Focus Site (with German SFB574) • Nov. 2007: IBM Focus Site (with JAMSTEC/IFREE) • Mini-Workshops at AGU 2007: RCL Future, Data Tutorial • Sept. 2008 SEIZE Initiative TEI • Web Page, Newsletter, NSF Panel, etc.

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