Convened by: Eli Silver (UC Santa Cruz, USA), Terry Plank (Boston University, USA), Kaj Hoernle (Christian-Albrechts University of Kiel & IFM-GEOMAR, Germany), Marino Protti (Universidad Nacional, Costa Rica), Guillermo Alvarado (Universidad de Costa Rica, Costa Rica), and Víctor González (Universidad Nacional, Costa Rica)
Workshop to Integrate Subduction Factory and Seismogenic Zone Studies in Central America 18-22 June, in Heredia, Costa Rica. This workshop, co-sponsored by MARGINS and the German SFB-574, will integrate offshore and onshore studies carried out in Central America over the past 5 years.
These studies cover a wide array of topics that include the composition, age, structure, diagenetic, metasomatic and metamorphic reactions within the subduction input (incoming and subducting plates) and processes occurring within, structure of and output from the forearc, volcanic arc, backarc and mantle wedge.
Goals of the workshop will be to improve our understanding of:
1. Links between processes occurring in different parts of the subduction system, e.g. relationship between
subduction input and output in the forearc and volcanic arc, material (especially volatile) fluxes through the system, how differences
in subduction parameters (e.g. slab dip, crustal/lithospheric thickness) or mantle wedge structure/composition affect magma composition,
the role of serpentine as a source of water in subduction zones, and the relationship between fluid release and seismic activity;
2. The processes that control the up- and down-dip limits of the seismogenic zone, geodetic vs. seismologic observations,
silent slip events, fault zone permeability, seismic imaging, and hydrotectonic pulsing;
3. The temporal and spatial evolution of the subduction system;
4. The long- and short-term hazards related to the subduction zone, such as the origin and consequences of earthquakes,
submarine and subaerial landslides/mass wasting, tsunamis and volcanic activity (eruptions and gas venting).