Home | New User | Your Account | Company | Support |

As a seismologist you need a software package with the flexibility to
allow you to model various proposed seismic source interpretations
and the power to quickly see how they effect the seismic hazard.
**EZ-FRISK™** allows you to define your own fault and
area sources and their seismic parameters.

For fault/subduction sources you can modify:

- Location
- Fault mechanism (subduction, reverse, strike-slip, etc.)
- Deterministic magnitude
- Orientation (dip angles and depths)
- Recurrence rate (as activity rate or slip rate)
- Recurrence slope (characteristic, exponential, 50-50)
- Maximum magnitude
- Minimum magnitude
- Rupture length equation
- Integration step-size

For area sources you can modify:

- Location
- Fault mechanism
- Depth
- Recurrence rate
- Maximum magnitude
- Minimum magnitude

**EZ-FRISK™** provides an extensive set of
attenuation relationships. You can modify the coefficients to reflect
new research or conduct sensitivity analyses. You can enter completely
new attenuation equations by providing an interpolation table. We give
you a powerful attenuation charting capability that lets you verify that
you have entered coefficients correctly. You can easily compare and
contrast different attenuation equations.

**EZ-FRISK™** provides a powerful seismic hazard mapping capability.
First you set up a single site analysis by choosing seismic sources, attenuation
equations, and computational parameters. Then you define a boundary region to
map and the grid spacing. With a single command, **EZ-FRISK™** will
calculate the hazard at each gridded location.
We have incorporated optimizations that make the overall time to produce a map
shorter than repeated use of the single-site analyses. If you need additional results, you can run an analysis for a set of selected points.

Results for all sites are consolidated into two files. One file contains hazard data (ground motion vs. probability hazard mapping of exceedence) and the other site contains spectra data. Spectra data can be obtained for any number of spectral periods and probability levels.