Study 15.12 Data Products

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Hazard Maps

Below are hazard maps from Study 15.12 (150 ppi).

Basic Maps

0.2 sec geometric mean
0.2 sec geometric mean hazard map, all sites
0.2 sec geometric mean hazard map, all sites, marked
0.2 sec 2008 NGA basemap
0.5 sec geometric mean
0.5 sec geometric mean hazard map, all sites
0.5 sec geometric mean hazard map, all sites, marked
0.2 sec 2008 NGA basemap
1 sec geometric mean
1 sec geometric mean hazard map, all sites
1 sec geometric mean hazard map, all sites, marked
0.2 sec 2008 NGA basemap
2 sec geometric mean
2 sec geometric mean hazard map, all sites
2 sec geometric mean hazard map, all sites, marked
3 sec geometric mean
3 sec geometric mean hazard map, all sites
3 sec geometric mean hazard map, all sites, marked
5 sec geometric mean
5 sec geometric mean hazard map, all sites
5 sec geometric mean hazard map, all sites, marked
10 sec geometric mean
10 sec geometric mean hazard map, all sites
10 sec geometric mean hazard map, all sites, marked

Comparison Maps

2 sec 3 sec 5 sec 10 sec
Difference
Study 15.12 vs Study 15.4, 2 sec geometric mean, difference map. Warm colors are higher Study 15.12.
Study 15.12 vs Study 15.4, 3 sec geometric mean, difference map. Warm colors are higher Study 15.12.
Study 15.12 vs Study 15.4, 5 sec geometric mean, difference map. Warm colors are higher Study 15.12.
Study 15.12 vs Study 15.4, 10 sec geometric mean, difference map. Warm colors are higher Study 15.12.
Ratio
Study 15.12 vs Study 15.4, 2 sec geometric mean, ratio map. Warm colors are higher Study 15.12.
Study 15.12 vs Study 15.4, 3 sec geometric mean, ratio map. Warm colors are higher Study 15.12.
Study 15.12 vs Study 15.4, 5 sec geometric mean, ratio map. Warm colors are higher Study 15.12.
Study 15.12 vs Study 15.4, 10 sec geometric mean, ratio map. Warm colors are higher Study 15.12.

Comparison with NGA results

We would expect the stochastic results to show reasonably good agreement with the deterministic results, but they do not. Here are some data products to investigate this. We've chosen 3 sites with large differences (MRVY, s028, LAPD) and 2 we're familiar with (PAS, USC).

We replotted the curves using NGA-2s (instead of NGA-1) for comparison:

Site 0.5 sec 0.2 sec
USC