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Next-Level ShakeZoning simulations of two earthquake scenarios in downtown Reno, Nevada

Next-Level ShakeZoning simulations of two earthquake scenarios in downtown Reno, Nevada. Janice Kukuk Fall 2010 UNR Senior Research Project Advisor: Dr. John Louie. Fault. Model Setup. Two Basin-Thickness Datasets: Widmer et al., 2007 Washoe Co. gravity model

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Next-Level ShakeZoning simulations of two earthquake scenarios in downtown Reno, Nevada

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  1. Next-Level ShakeZoning simulations of two earthquake scenarios in downtown Reno, Nevada Janice Kukuk Fall 2010 UNR Senior Research Project Advisor: Dr. John Louie

  2. Fault

  3. Model Setup • Two Basin-Thickness Datasets: • Widmer et al., 2007 Washoe Co. gravity model • Saltus and Jachens 1995 gravity model • Two Geotech Datasets: • Pancha 2007 ANSS station measurements • Scott et al., 2004 shallow shear-velocity transect • Scenario Fault (like 2008 Wells): • Strike: N-S • Motion: Normal- down to the west • Length: 7.58 km • Mw: 5.94 (Anderson et al., 1996) • Frequency: 0.1 Hz and 1.0 Hz

  4. Physics-Based Wave Propagation 0.1 Hz Model 1.0 Hz Model • The basin amplifies and traps seismic shaking • Wave propagation unaffected by basin dataset boundariesin the 0.1 Hz Model • Wave propagation is affected by basin dataset boundaries in the 1.0 Hz Model

  5. Peak Ground Velocities (PGV) Max PGV: 22 cm/s Max PGV: 46 cm/s

  6. Conclusions • Similar results to the Mw 6.0 2008 Wells earthquake • Both 0.1 Hz and 1.0 Hz simulations show large PGVs • 22 cm/s and 46 cm/s • Expected shaking similar to that of the Wells earthquake • Possibly more damage due to larger population and large number of unreinforced masonry structures • More constraint needed on the length and the slip rate of the scenario fault

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