EZ-FRISK 7.60 Build 001 [Information]
http://forum.civilea.com/Thread-ez-frisk-7-60-build-001
Size: 59.3 MB
What's New in Version 7.60
EZ-FRISK Version 7.60 contains new capabilities, minor enhancements, and bug fixes.
New Features
The major new feature in this release is the Expression Evaluator attenuation equation form. This new form allows users to specify a completely novel attenuation equation formula, as well as specify equation coefficient headings, equation parameters, required site parameters. This form can access all of the rupture metrics provided by EZ-FRISK, such as Joyner-Boore distance, closest distance to rupture, depth at closest distance to rupture, etc. The formula is expressed as a code snippet, in a expression language with similarities to Java or MatLab. Please refer to the Expression Evaluator Attenuation Equation Editor and the Expression Evaluator equation form.
We have had a number of users request a simple table that summarizes the sources used in an analysis, to be included in reports to reviewing agencies. To meet this need, we've added a seismic source summary table to the echo report. This table provides the source, region, closest distance, an estimate of the deterministic magnitude, the fault mechanism, dip angle and direction, and indication of where the site lies relative to the source.
A frequent mistake users make with the USGS 2008 Nation Seismic Hazard Map model is to apply the NGA attenuation equations to deep slab sources such as a California Deep Gridded source, for which they are not appropriate. Previously, this did not cause any validation problems, because these attenuation equations were defined as being applicable to "All Sources", where in fact they are not applicable to subduction zone sources. To better describe the applicability of many attenuation equations, a "Crustal" pseudo-fault mechanism has been added to EZ-FRISK. Many of the existing standard attenuation equations for shallow, crustal earthquakes have been modified to use this mechanism, instead of the "All Sources" psuedo-fault mechanism. With this change, it is is now an error to use these attenuation equations with subduction zone sources. In coordination with this change, a new version of the USGS 2008 model is being released. Along with other changes, the new model changes the fault mechanism for the Charleston seismic zone from the "Area" pseudo-mechanism, to the "Crustal" so that it is compatible with the changes in the standard attenuation equation database.
When you open up a new seismic hazard analysis, you are now presented with a dialog box that allows you to choose the template for your new analysis. The available templates are determined by the seismic models you have installed on your computer. We anticipate updating all of our regional seismic models to provide templates that are good starting points for regional analyses.
Enhancements
The seismic hazard map now shows the surface projection of fault sources, along with the fault trace. This helps clarify whether a particular source is dipping towards or away from a particular site. Please note, currently the surface projection is calculated using the Zeng method for modeling the rupture surface, although, at present EZ-FRISK uses the Toro method of modeling the rupture surface in its calculations. For reverse and normal faults whose traces are significantly curved, there can be a significant difference in the shape of the rupture surface predicted by these two methods.
The calculation of the conditional mean spectrum was implemented in EZ-FRISK version 7.52. With the initial implementation, the mean epsilon over the various attenuation equations that were used with a source was used in calculating the CMS for a particular source. Even with a single attenuation equation, the use of a mean epsilon value does not result in the CMS passing exactly through target amplitude at the target spectral period. Consequently, the CMS had to be normalized to target amplitude. Now, instead of using the mean epsilon from deaggregation to calculate the CMS, the value of epsilon is calculated for the target amplitude at the target period for a particular attenuation equation. With this approach, there is no need to normalize the CMS, so that capability has been removed.
In the journal article "Modifications to Existing Ground Motion Prediction Equations in Light of New Data" to be published in the Issue 101:3 of the BSSA, Gail M. Atkinson and David M. Boore provide modifications to several of their attenuation equations. We have implemented the small magnitude modification for NGA equation, and the magnitude dependent stress drop for the ENA equation. Our implementation is based on pre-prints of the journal article retrieved from the Authors' web site.
The Abrahamson-Silva NGA equations now include all of the changes recommended in the August 1, 2009 Errata for "Summary of the Abrahamson and Silva NGA ground-motion relations" by Abrahamson, N.A. and W. J. Silva (2008), obtained from the author's web site.
The identify feature for soil condition maps is now implemented. This allows users to query the soil map for specific values of Vs30.
A log message is now written for the Vs30 value used in calculating hazard, when overriding the site paramter Vs30 value from soil map. Previously, when running a single site analysis, it was not possible for the user to determine the actual Vs30 value used in the hazard calculation, since the value reported in the echo file is not used.
The program now remembers whether you want to run with windows maximized or with overlapping windows. Previously, the program would always start up using overlapping windows and would use overlapping window whenever a new window was opened after all previous windows were closed.
Validation failure messages for mismatch between source's fault mechanism and attenuation equation now identifies the source that is a problem. This makes the messages much more helpful in diagnosing the problem.
Validation is now on intensity type plus fault mechanism. Previously, the validation was performed separately on intensity type and fault mechanism. If an equation supported different fault mechanism for different intensity types, a seismic hazard analysis could pass validation, but still fail at run time. This situation is now identified at validation rather than at run time.
Exceedance tables intensity type, amplitude units, and fault mechanisms can now be edited. Please note: it is still not possible to edit data though. This release improves loading data from external files into the exceedance table, so that it occurs once during analysis, rather than for each seismic source.
Bug Fixes
1. Under some circumstances, while performing spectral matching, an endless cascade of command prompt windows would be displayed on the users computer screen. This would effectively lock up the user's computer, sometimes requiring the computer to unplug the computer to recover. This was caused by executing an obsolete FORTRAN pause statement in a Windows program with no command console. All pause statements have now been converted to error returns.
2. This release removes the ability to specify the time window of an accelerogram to be used for matching. It has been found that current version of RspMatch does not properly handle this functionality when circumstances lead to dynamic padding of the accelerogram. In the future, we expect to reintroduce this feature, with the ability to specify the window for each particular input accelerogram.
3. This release converts part of the spectral matching algorithm to quad precision. Prior to this change, the algorithm would sometimes calculate values that were to big to be stored in double precision complex variables, a previously unrecognized issue with the improved tapered cosine method. The developer of the improved tapered cosine method asserts that by using quad precision complex numbers, this problem should not occur provided that the maximum frequency for spectral matching is no greater than 200 Hz, which is a reasonable upper limit of engineering interest.
4. In previous versions of EZ-FRISK, under some difficult to predict circumstances, the dynamic list of views displayed under the Windows menu would be incomplete. The cause of this problem was a flawed implementation of this feature by Microsoft, which they are apparently never going to address. To resolve this problem, the Microsoft implementation has been disabled, and the feature has been reimplemented with application-level custom code.
5. In previous versions of EZ-FRISK, if a user attempted to remove several attenuation equations from an analysis using the Select Attenuation Equation dialog, only the first equation would be removed. This problem has been resolved.
6. This release resolves a file sharing problem that prevented exceedance table attenuation equation from being used with multithreading.
EZ-FRISK 7.60 Build 001 - INSTALL ONLY
Size: 55.7 MB
Hi friends,
This is the installation of EZ-FRISK 7.60 Build 001. Hopefully Mr.Benny can create the medicine for this program.
http://www.mediafire.com/?4xa4plrh78xnk2r
http://hotfile.com/dl/127117156/5921...0.0.1.rar.html
