The topics above are offered by ICDP's Operational Support Group (OSG), a small team of scientists, engineers and technicians to assist in project planning and management. 

SAFOD as part of Earth Scope has drilled and instrumented an inclined borehole across the San Andreas Fault Zone to a depth of 3.2 km, targeting a repeating microearthquake source. 

The array includes: Fiber-optic cable head, DS325 locking arm, Pinnacle high-temperature tiltmeter, GERI DS250/DS150 adaptor, GERI DS150 65m interconnect, GERI DS150 seismometer, GERI DS150 65m interconnect, GERI DS150 seismometer, GERI DS150 3m interconnect and weight bar.

8 ½” borehole, 125 °C static temperature, max. depth 3998 m, longest operation: 2 months

Sept. 2006: the array had to be recovered due to cable transmission failures and gas influx in the instrument packages. Waiting on NSF approval for a new installation since.