Delaney Park Borehole Array

The Robert Atwood building sensors are complemented by the Delaney Park borehole array. This array of buried, three-component sensors in six boreholes ranging in depth from 15 to 200 feet (5–60 meters), with a seventh sensor at the surface. The boreholes are located approximately a city block from the building, sufficiently removed that the sensor records are unaffected by shaking of the building itself. The borehole data thus record the input signal of the seismic waves impinging on the building. In combination, the borehole and building-response data will allow engineers to study the interaction between the soil and the structure.