Crisis2007

Map data Enter GIS files,.shp (ArcGIS) format Not necessary. Only usefull to see where the sources are.

Data of computation sites Selection list or grid Title which will be written in output files header Give file name for list, or enter coordinates for grid Option to filter out some part of the grid. Once the option start polygon is selected, click on the map to define a polygon

Source geometry data Geographical coordinates of the points defining the source Type of source Turn on/off the source Option different models of circular fault Rayon=f(magnitude) Viewer Navigate between sources

Data on spectral ordinates Total number of spectral ordinates for which hazard computation will be performed. Has to be consistant with the.ATN (or.atn) file which contains the GM model (tables of amplitude for various M and R). Switch between the different periods Actual values of the period (0 sec = PGA) Has to be consistant with the.ATN file Upper and lower limit of the intensity level (the hazard curve will be compute in this range of acceleration) Number of points (between the upper and lower limits of accelaration) for which the the exceedance rates will be computed. (for a large grid of points computation may be long). Unit of the ground motion amplitude Has to be consistant with the.ATN file

Seismicity data Navigate between sources Select seismicity model: Gutenberg-Richter (areas), Characteristic (fault) PARAMETERS Minimum magnitude Lambda (activity rate) Beta (slope of the GR) Standard deviation of beta Maximum magnitude distribution (next page)

Mmax Untruncated expected value Untruncated standard deviation M1 M2

Attenuation data Enter one or more GMPEs (4 build-in models) or user model Viewer Click on these tabs to affect one specific model to one specific zone

Global parameters Maximum distance of integration (sources located beyond this distance are not taken into account) Parameters related to the triangulation Define the Return Periods of interest (up to 5) Select the distance that will be given in the output file for deaggregation

Example.ATN file Minf, Msup, number of M Rinf, Rsup, number of R, type of R (1 focal, 2 epicentral, 3 Joyner-Boore, 4 rupture distance) Period 1, standard deviation, truncation Ground motion amplitude for period 1 (NR columns, NM rows) Period 2, standard deviation, truncation

Problems Circular faults Horizontal faults Does not integrate over depth – At a given point of the source the depth is constant Does not take into account variable sigma with magnitude and distance – For a given period sigma is constant