Loma Prieta addition

Fitting vertical displacement data

Extracted displacement profile

Leveling data from Marshall and Segall, 1996:Coseismic vertical displacements

Just looking at the dip slip component, what is the best fitting fault geometry and slip?

http://pubs.usgs.gov/pp/pp1550/pp1550a/

dip = 120; %want it to dip to the westb = 1; %burger's vector

%fault upper tip (remember that positive is down; xi, zeta)xi_upper = 21250;zeta_upper = 3000;down_dip_length=9000;

dip = 120; %want it to dip to the westb = 2; %burger's vector

%fault upper tip (remember that positive is down; xi, zeta)xi_upper = 21250;zeta_upper = 3000;down_dip_length=9000;

dip = 120; %want it to dip to the westb = 2; %burger's vector

%fault upper tip (remember that positive is down; xi, zeta)xi_upper = 21250;zeta_upper = 1000;down_dip_length=9000;

dip = 120; %want it to dip to the westb = 2; %burger's vector

%fault upper tip (remember that positive is down; xi, zeta)xi_upper = 21250;zeta_upper = 5000;down_dip_length=9000;

dip = 90; %want it to dip to the westb = 1.5; %burger's vector

%fault upper tip (remember that positive is down; xi, zeta)xi_upper = 21250;zeta_upper = 3000;down_dip_length=9000;

dip = 150; %want it to dip to the westb = 1.5; %burger's vector

%fault upper tip (remember that positive is down; xi, zeta)xi_upper = 21250;zeta_upper = 3000;down_dip_length=9000;

dip = 119.5; %want it to dip to the westb = 1.5; %burger's vector

%fault upper tip (remember that positive is down; xi, zeta)xi_upper = 21250;zeta_upper = 3000;down_dip_length=9000;

Best fit

2D grid search

Best fit

Dip

Slip

2D error surface

dip = 119.5; %want it to dip to the westb = 1.5; %burger's vector

%fault upper tip (remember that positive is down; xi, zeta)xi_upper = 21250;zeta_upper = 3000;down_dip_length=9000;

This is troubling

Best fit