Table 1. Schedule for Implementation of Research: * major activity, - rampup and rampdown. Monitoring earthquakes and strain (1) defines the seismogenic zone and locates targets for imaging and drilling (2). ODP drilling will determine the nature of incoming material near the deformation front (4). Images (waveforms) of the seismogenic zone plus experiments (6) on the incoming material will lead to model predictions (7) on the nature of the materials in the seismogenic zone that can be ultimately tested by deep drilling (8). Locating the deep drilling site will require extensive site surveys, including OBS, borehole strain/tilt, seismic reflection imaging and GPS (in Costa Rica, where land exposure enables strain measurements close to the seismogenic zone).