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2012 Annual Report - Research Reports


2012 Annual Report Cover FigureFrom Research Section 5:
This model of creep, movement on the Hayward Fault with no accompanying earthquake, suggests that the creep rate near the surface is faster along the southern section of the fault. At greater depth, the situation is reversed, with higher rates in the north than in the south. Given the fact that most of the Hayward fault has accumulated a deficit of 30%-90% of its long-term slip budget, we estimate that seismic moment for a Mw ~6.3-6.8 has accumulated since the last big event in 1868.
  1. Episodic Tremors Highlight Slow Slip Events in Central California
  2. Searching for Small Deformation Signals in Laser Strainmeter Data Associated with Seismic Tremor in Parkfield
  3. TremorScope: Imaging the Deep Workings of the San Andreas Fault
  4. Time-dependent Model of Creep on the Hayward Fault from Joint Inversion of 18 Years of InSAR and Surface Creep Data
  5. Landslide Risk Assessment (LSRA): GPS Instrumentation and Remote Sensing Study of Slope Movement in the Berkeley Hills, California.
  6. Investigating Fault Slip and Rheology Along the San Andreas Fault in the San Juan Bautista Region
  7. Aseismic Slip and Fault Interaction from Repeating Earthquakes in the Loma Prieta Aftershock Zone
  8. Surface Slip during Large Owens Valley Earthquakes from EarthScope Lidar
  9. Testing the Temporal Persistence of Slip Rate Along the Little Lake Fault, Eastern California Shear Zone
  10. Examining the Mechanical Behavior and Evolution of the Southern San Andreas Fault System through Determination of Late Quaternary Slip Rates and Distinct Element Simulations
  11. Investigating Fault Slip Budget in the Mendocino Triple Junction
  12. Incipient Faulting near Lake Pillsbury, CA
  13. Measurements of PBO Borehole Seismometer Orientations
  14. Spatiotemporal Behaviors in Earthquake Multiplets at the Geysers Geothermal Field, CA
  15. A systematic analysis of seismic moment tensor for seismicity at The Geysers Geothermal Field, California
  16. Joint Inversion of Seismic and Geodetic Data for the Source of the 4th March 2010 Mw 6.3 Jia-Shian, SW Taiwan, Earthquake
  17. Deciphering the Mystery of the Great Indian Ocean Earthquakes
  18. Source Spectral Variation and Yield Estimation Derived from High Frequency P and S Coda
  19. Regional Moment Tensor Inversion for Shallow Sources: the Effects of Free-Surface Vanishing Traction
  20. ShakeAlert: A Unified EEW System for California
  21. ElarmS Earthquake Early Warning
  22. Earthquake Early Warning with GPS Data
  23. GPS Rapid Response to Moderate Earthquakes: A Case Study of the Alum Rock Earthquake
  24. Using Smartphones to Detect Earthquakes
  25. Probing the Deep Rheology of Tibet: Constraints from 2008 Mw 7.9 Wenchuan, China Earthquake
  26. Global Waveform Tomography with the Spectral Element Method: A Second-Generation Upper-Mantle Model
  27. The DNA12 Seismic Velocity Model
  28. Trust but Verify: a spot check for the new stratified model of upper mantle anisotropy beneath North America
  29. 3-D Seismic Velocity Structure of the Hawaii Hotspot from Joint Inversion of Body Wave and Surface Wave Data
  30. Azimuthal anisotropy in the Pacific upper mantle
  31. Anisotropic Upper Mantle Shear-wave Structure of East Asia from Waveform Inversion
  32. An Exceptionally Large ULVZ at the Base of the Mantle near Hawaii
  33. Do "double SS precursors" mean double discontinuities?
  34. Inversion of Receiver Functions without Deconvolution
  35. Surface-Wave Methods for Monitoring Subsurface Properties in Permafrost Soils