Shallow Background Seismicity Models

hazgridXnga.samoa input files to use corresponding to Open-File Report2012-1087 and Their Weights
File Name				Weight
amsam12s.agrid.0-50.nga.in		0.5
amsam12s.agrid.0-50.zhaoc.in		0.5
amsam12s.agrid.fiji.nga.in		0.5
amsam12s.agrid.fiji.zhaoc.in		0.5
amsam12s.agrid.nh.nga.in		0.5
amsam12s.agrid.nh.zhaoc.in		0.5
amsam12s.agrid.nhor.nga.in		0.5
amsam12s.agrid.nhor.zhaoc.in		0.5	
amsam12s.agrid.t.nga.in			0.5
amsam12s.agrid.t.zhaoc.in		0.5
amsam12s.agrid.tor.nga.in		0.5
amsam12s.agrid.tor.zhaoc.in		0.5

hazgridXnga.samoa input files to use corresponding to Uniform American Samoa Zone of Hazard (Aug 2012 update)
noamsam12s.agrid.0-50.nga.in		0.5
noamsam12s.agrid.0-50.zhaoc.in		0.5
amsam12n.agrid.uniform8.2.zhaoc.in	0.1
amsam12n.agrid.uniform8.2.nga.in	0.1
amsam12n.agrid.uniform.zhaoc.in		0.4
amsam12n.agrid.uniform.nga.in		0.4
amsam12s.agrid.fiji.nga.in		0.5
amsam12s.agrid.fiji.zhaoc.in		0.5
amsam12s.agrid.nh.nga.in		0.5
amsam12s.agrid.nh.zhaoc.in		0.5
amsam12s.agrid.nhor.nga.in		0.5
amsam12s.agrid.nhor.zhaoc.in		0.5	
amsam12s.agrid.t.nga.in			0.5
amsam12s.agrid.t.zhaoc.in		0.5
amsam12s.agrid.tor_gaus35.nga.in	0.5
amsam12s.agrid.tor_gaus35.zhaoc.in	0.5

hazgridXnga.samoa input files corresponding to Deep Background Seismicity Models (common to both shallow-hazard models above). Zhaop and zp files use the shifted-GMPE-median model.
amsam11.agrid.50-100.zhao.in		0.8
amsam11.agrid.50-100.zhaop.in		0.2
amsam11.agrid.100-200.zhao.in		0.8
amsam11.agrid.100-200.zhaop.in		0.2
amsam11.agrid.200-300z.in		0.8
amsam11.agrid.200-300zp.in		0.2
amsam11.agrid.300-400z.in		0.8
amsam11.agrid.300-400zp.in		0.2
amsam11.agrid.400-500z.in		0.8
amsam11.agrid.400-500zp.in		0.2
amsam11.agrid.500-600z.in		0.8
amsam11.agrid.500-600zp.in		0.2
amsam11.agrid.600-723z.in		0.8
amsam11.agrid.600-723zp.in		0.2

hazSUBXnga.samoa input files corresponding to Subduction Source Models. 9p0 in file name have M9.0 Mmax. 8p5 in file name have M8.5 Mmax.	
amsam11.samoa9p0z.in			0.5
amsam11.samoa8p5z.in			0.5
amsam11.van9p0z.in			0.5
amsam11.van8p5z.in			0.5

Scripts to combine hazard curves:
For the OFR version of logic tree:
combine.all.nga12s.csh
combine.all.zhao12s.csh
combine.final.2pc50.csh

For the American Samoa Zone version of logic tree:
combine.uniform.nga12s.csh
combine.uniform.zhao12s.csh

For just the American Samoa region, blending (50%wt to each) the OFR and Zone versions of logic tree:
combine.these.csh
interp_map.csh
For other parts of the South Pacific Study area, we recommend that you just use the OFR version of the 
hazard curve.

The last cshell script above, interp_map.csh, interpolates a 1/10 degree sampled set to a 1/20 degree sampled set of sites or receivers.

Reference:
Petersen, M.D., Harmsen, S.C., Rukstales, K.S., Mueller, C.S., McNamara, D.E., Luco, Nicolas, and Walling, Melanie, 2012, Seismic hazard of American Samoa and neighboring South Pacific Islands?Methods, data, parameters, and results: U.S. Geological Survey Open-File Report 2012?1087, 98 p.