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A Kinematic Fault Network Model for Crustal Deformation

A Kinematic Fault Network Model for Crustal Deformation (including seismicity of optimal locking depth, shallow surface creep and geological constraints) Yuehua Zeng and Zhengkang Shen. Elastic dislocation theory. Locked near the surface. Locking Depth.

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A Kinematic Fault Network Model for Crustal Deformation

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  1. A Kinematic Fault Network Model for Crustal Deformation (including seismicity of optimal locking depth, shallow surface creep and geological constraints) Yuehua Zeng and ZhengkangShen

  2. Elastic dislocation theory Locked near the surface. Locking Depth Slip at constant rate below transition depth

  3. For a given slip distribution on all the faults, the ground deformation vector at any point is obtained by taking a spatial convolution of the static point source Green's function with the fault slip function: where m is the shear modulus, ni is a unit vector normal to the fault, Duj is the j-th component of slip on the fault, and Gni is the Green's function calculated from receiver to source. x is a vector describing the receiver location and x is a vector describing the corresponding source point where the Green's function is calculated. 1) assuming fault segments slip at certain rates beneath a locking depth 2) locking depths are defined by local seismicity depth distributions 3) slip vector conservation imposed at fault nodes or intersections 4) depth dependent aseismic creeps

  4. GPS only

  5. With geological constraints geological rates

  6. Comparison of geodetic and seismicity locking depth

  7. UCERF 3 Testing Block model (with/without seismicity depth, shallow surface creep and geological constraints)

  8. Fixed depth of 15 km, no creep, no geological constraints

  9. Seismicity depth, no creep, no geological constraints

  10. Seismicity depth, creep, geological constraints

  11. Fixed depth of 15 km, no creep, no geological constraints

  12. Seismicity depth, no creep, no geological constraints

  13. Seismicity depth, creep, geological constraints

  14. Fixed depth, no creep, and no geological constraints Seismicity depth, no creep, and no geological constraints Seismicity depth, creep, and geological constraints

  15. Fixed depth of 15 km, no creep, no geological constraints

  16. Seismicity depth, no creep, no geological constraints

  17. Seismicity depth, creep, geological constraints

  18. UCERF 2 Model and Its Comparison with the Testing Block model (both with seismicity depth, shallow surface creep and geological constraints)

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