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POLARIS Underground Project at SNO (P.U.P.S)
Gail M. AtkinsonEleanor Sonley
San Linn I. KakaCarleton University
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Seismic waves composed of
• Source effects– Resulting from nucleation of earthquake
• Path effects– Geometric spreading and anelastic
attenuation with distance from hypocentre
• Site effects– Amplification due to near surface rock/soil
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Purpose
• Measure attenuation due to uppermost 2 km of a hard rock site
• Frequency dependence of transmission to surface
• Free surface effects
• Measuring source effects of small earthquakes
• Teleseismic effects