Download presentation
Presentation is loading. Please wait.
Published byEdgardo Lin Modified over 9 years ago
1
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
2
Elastic dislocation theory Locked near the surface. Slip at constant rate below transition depth Locking 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 is the shear modulus, i is a unit vector normal to the fault, u j is the j-th component of slip on the fault, and G ni is the Green's function calculated from receiver to source. x is a vector describing the receiver location and 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
6
GPS only
7
With geological constraints geological rates
8
Comparison of geodetic and seismicity locking depth
11
UCERF 3 Testing Block model (with/without seismicity depth, shallow surface creep and geological constraints)
14
Fixed depth of 15 km, no creep, no geological constraints
15
Seismicity depth, no creep, no geological constraints
16
Seismicity depth, creep, geological constraints
18
Fixed depth of 15 km, no creep, no geological constraints
19
Seismicity depth, no creep, no geological constraints
20
Seismicity depth, creep, geological constraints
22
Fixed depth, no creep, and no geological constraints Seismicity depth, no creep, and no geological constraints Seismicity depth, creep, and geological constraints
24
Fixed depth of 15 km, no creep, no geological constraints
25
Seismicity depth, no creep, no geological constraints
26
Seismicity depth, creep, geological constraints
27
UCERF 2 Model and Its Comparison with the Testing Block model (both with seismicity depth, shallow surface creep and geological constraints)
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.