Figure and table captions.

F1. Site map in the eastern Indian Ocean showing the location of Ninetyeast Ridge and NERO Site 1107.

Figure 1

F2. Sketch of the OFM/SISMOBS experiment.

Figure 2

F3. Location of the FDSNs and GEOSCOPE stations in the world as of 1996.

Figure 3

F4. Focal mechanisms of earthquakes that occurred in the Indian Ocean during the last 15 yr.

Figure 4

F5. Free-air gravity image derived from satellite altimetry of the Ninetyeast Ridge, Kerguelen Plateau, and Broken Ridge.

Figure 5

F6. Schematic illustration of the cased borehole configuration at Hole 1107A.

Figure 6

F7. Amplitude spectra of drill-string accelerometer.

Figure 7

F8. A 30 s sample of the time series and spectra during drilling in basement at 398 m.

Figure 8

F9. Location of some of the Sonne seismic reflection/refraction profiles in the vicinity of Site 1107.

Figure 9

T1. Profiles shot by the Sonne during OBS deployment.

F10. Travel-time/distance plots for profile P8 for each of the components recorded by OBSs #A4 and #A8. 

Figure 10