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Southern San Andreas Fault

Southern San Andreas Fault. Quiescence period: 300+ years Slip rate: from 10 to 35 mm/yr Observed creep episodes. How pervasive is creep on the southern SAF? What fraction of the elastic strain energy does it relieve?

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Southern San Andreas Fault

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  1. Southern San Andreas Fault Quiescence period: 300+ years Slip rate: from 10 to 35 mm/yr Observed creep episodes

  2. How pervasive is creep on the southern SAF? • What fraction of the elastic strain energy does it relieve? • What is the effective rate at which elastic strain accumulates on the southern SAF?

  3. Fialko, Nature 2006 Line of sight velocities from stacked ERS-1/2 data 35 interferograms Epoch: 1992-2000

  4. Fialko, Nature 2006 Line of sight velocities from stacked InSAR data 35 interferograms Epoch: 1992-2000

  5. G. Lin, 2007

  6. Blind strike-slip fault?

  7. 25 mm/yr 20 mm/yr 25 +/- 2 mm/yr x 250-300 yrs -> 6-8 m

  8. Weldon et al., GSA Today, 2004 Southern SAF (Wrightwood)

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