Latest Forum Discussions

Effects of disaggregation on unified hazard spectrum

2020-05-20T11:24:28.0530000

Hi R-Crisis team;

I wolud like to know r-crisis was capable of showing the differences between spectrum obtained before and after disaggregation. If yes, how can we see this?

Thanks in advance

Variability of Z2.5 in R-CRISIS for Attenuation Models

2020-05-13T04:22:53.9670000

Dear R-CRISIS team,

Please let me know if in R-CRISIS there is a way to implement the Z2.5 value that varies from computation site to computation site. Currently it is possible to specify just a mean value in the field Z2.5 in the window "Attenuation Model Section" for whole project area using the model of Campbell and Bozorgnia 2014 for instance.

I appreciate your help. Thanks so much.

Best,

Oscar Rodriguez.

Computation of PGA with Pezeshk 2018

2020-05-06T17:52:16.3870000

Dear R-CRISIS team,

Please, I appreciate you let me know what is the reason why the PGA computation was not implemented in R-CRISIS using as GMPM the Pezeshk 2018 attenuation relationship since the document of this model published the coefficients for the PGA intensity.

Thanks in advance.

Best,

Oscar Rodríguez.

Sigma0 in GMPMs

2020-05-02T23:50:48.2600000

Dear R-CRISIS team,

I'm not sure the meaning of the check field "Sigma0" that appears in the "Attenuation Model Selection" window when I want to apply a GMPM as the Abrahamson 2014 and Campbell 2014 ones. I appreciate you explanation about the purpose of theses check box. In the case where I want to run a "no truncated" model, what would be the selection on these two models? In the case of the others models, "no truncation" condition is set with "Sigma truncation = 0". Is this correct?

Thanks so much,

Oscar Rodriguez

Background Seismicity Implementation

2020-04-17T01:45:10.4430000

I have downloaded the shapefile of background seismicity described in European Database of Seismogenic Faults (EDSF). they are similar with areas source but no data with seismicity (G-R) parameters. Is there any special description method in R-crisis for background seismicity. Please find the data file as *.dat of shape file.

Adding a GMPE (atn.file)

2020-03-26T04:57:07.8300000

Hi, I m requesting a tutorial for building a GMPE,

how to convert units?

2020-03-08T12:06:59.9670000

Hi R-Crisis team.

I have a question now. How to convert units for attenuation functions from different subduction sources and fault sources? If the subduction source uses the attenuation function with units (cm / s) and the fault source uses the attenuation function with units (g), I want to use the unit in (g). Thank you for your any help!

Best wishes!

Site is inside the Source zone.

2020-02-26T13:28:11.2700000

If the Site is inside the source zone, how, R-Crisis is performing? In that case is it considering and annular sources, such that, below the site, the effect of earthquakes is not considered.

If the annular source is considered, then what will be the radius of annulus.

Thanks in advance.

Obtained high PSHA value in stable continent,

2020-02-22T16:58:25.2270000

I am doing psha analysis of a site in Indian peninsular region using R-crisis software. I have devided the site with various seismic zones. Maximum credible earthquake is 6.8. I have calculated a b value of each zone. During PSHA analysis my site is located inside the one seismic zone, with lamda =0.12, beta 1.953, Mmin4.8, and Mmax 6.8. with PSHA with return period 10000 years, I am getting pga value nearly 0.48 to 0.58 g. Which is very high value for any stable continent. I think is I am getting that much high value because my site is located inside the source zone and made some gross mistake in defining the problem. (Source parameters are correct). Kindly give your comments and suggestions. In R-crisis software, in have define site location, Source geometry as area source, Source seismicity, Attinuation relationship ( Pezeshek et.al. 2011, and Atkinson Boots 2006, ENA). Depth of source 10km. Site location 17.6868° N, 83.2185° E Square seismic zone

Fault integrate

2020-02-16T11:55:41.3200000

hello dears

please, how I can integrate faults in the calculations,
can I integrate polylines and polygons at the same time?

thank you

Entry of new attenuation law: Idini et al., 2017

2019-12-29T15:32:11.5330000

Dear,

I am writing to you because in our project to estimate the seismic hazard for the Los Rios Region in Chile we would like to test a new Chilean earthquake attenuation law from Idini et al. I would like to know if there is a possibility for you to enter this new law into R-CRISIS and test it directly there. If not, could you help me create the attenuation table that is entered into R-CRISIS with this new law? Attached is the paper that was published in Bulletin of Earthquake Engineering - May 2017.

Your help would be greatly appreciated,

I am very attentive to your answer,

Greetings and thank you!

Marisella.

Chiou & Youngs Model

2019-12-04T05:26:36.3270000

Goodnight. I want to use the GMPE proposed by Chiou and Youngs (2014), however I would like to know how the program determines the parameters Rjb (distance from Joyner and Boore), Rx and Rrup. I hope you can help me, thank you very much in advance.

Attenuation Table Montalva et al., 2017

2019-12-02T15:18:44.0270000

Hello, I am writing because I am doing a study of seismic hazard in Chile and I need to test the attenuation model for Chilean earthquakes of Montalva et al., 2017. You have entered it in R-CRISIS, but when I try it I don't have values for PGA, the spectral values start from 0.01s and in addition the results are quite high, close to 1.5[g]. I imagine it could be because of the standard deviation that is quite large in the model that comes loaded. Therefore, I would like to ask you if you can send me the excel file that contains the equation of Montalva et al., 2017 and with which the .atn file is created to upload it to R-CRISIS and modify it as I want. Is it possible? This would be of great help to me and this project.

Thank you very much,

Marisella Ortega.

Ztor in GMPE of Chiou and Youngs (2014)

2019-11-28T16:39:14.4930000

Dear Content_Manager,

Could you please show me how to input Ztor(Depth to the top of ruptured plane) in GMPE of Chiou and Youngs (2014)?

Thank you very much in advance

SD of GMPEs

2019-11-27T15:37:06.9500000

Dear all,

after running a PSHA calculation, using a logic tree with different GMPEs, are the outputs given in terms of ‘median’ or ‘mean’ values? Also, how can I extract the standard deviations of the different GMPEs?

Thank you in advance

Input File

2019-11-24T23:10:11.5670000

On trying to open a saved dat file I obtained the following message "Conversion from string ' 0.01' to type ' Double' is not valid". This was despite using only points as decimal separator. I got the same message after using only commas as decimal separators. How can I solve this problem?

attenuation data

2019-11-09T02:28:51.8230000

Hello, i have a question now. When i tried to add GMPE to my project, there was an error. It said, the following errors were found in the attenuation model: Enter more than the end of the file(输入超过文件尾). i know the example data in the Help Menu. But what should I do?

Thank you for your any help!

Best wishes!

how to extract the location of the geometric center of seismic sub-sources divided in CRISIS

2019-11-06T17:11:11.5770000

Dear CRISIS team,

Could you give a hint again on how the extract the location information (i.e. longitude, latitude) of the geometric center of seismic sub-sources? These sub-sources are generated, as explained by the CRISIS manual, by dividing the original area/fault sources into smaller units according to the limitation in Minimum triangle size and Minimum Distance/Triangle Size.

Thank you in advance,

Danhua

how to open the .ame file generated by CRISIS

2019-11-06T17:02:44.8030000

Dear CRISIS team,

Could you please give me a hint on which software is to use to open the .ame file successfully?

I've tried software recommended by this website https://file.org/extension/ame, but they don't work. Various errors are reported.

Thanks for your time spent on reading my question and in case you need my .ame file for test, I uploaded it to the following link:

https://www.jianguoyun.com/p/DWAoX00QkMnOBhi3lJMC

Thank you in advance,

Danhua

Project Help: Intensity Value Interpretation; Site Effects File Conversion, Other Basics

2019-09-04T17:15:58.4130000

Hi,

I'm currently using R-CRISIS for my MASc thesis. I'm assessing the seismic resilience of a spatially distributed public school building portfolio (over 1,000 buildings across around 200 sites) in 2 cities in Metro Manila, Philippines. In order to accurately select ground motion that represent regional seismicity at 5 (or more) intensity levels, I need to get a proper UHS at these 5 intensity levels. Currently, the Philippine government has released a PSHA with GEM's OpenQuake (https://hazard.openquake.org/gem/models/PHL/) for a 500-year return period. They have only provided me with the 500-year spectral acceleration maps for Metro Manila and 1000-year and 2500-year PGA maps. The focus of my thesis isn't a PSHA, but I'm trying to use CRISIS (due to the user inference) to get a UHS for 72,250,500,1000,2500 years at the different sites. As a preliminary analysis, I'm trying to see if the governing hazard at all levels is coming from the Marikina Valley Fault System, so I can simply select ground motions for that (ignoring distant crustal faults and subduction events). Steps I have already completed:

Defined the regional map, site locations, source geometry,
Created a hybrid GMPM from 6 using weights assigned in the PHL model
Defined the G-R seismicity data for both faults that run through Metro Manila with G-R
Defined the spectral ordinates - periods of interest to be able to compare with the existing PSHA information
Created the AME file for computation of multiple scenarios - using a single model

Questions that I could not find on the forums:

When defining the spectral ordinates - I have changed the default values as 0.01 and 1 for the limits on the intensity level (units in terms of g) to 0.001 and 2.5. I just converted gal to g. I have read the documentation and don't really understand if I should be adjusting this depending on the GMPMs used. Is this valid?
The scale of the seismic hazard map appears to just be intensity units normalized to 2.22 for T=0.2s. Can the results here be interpreted directly as Sa(T) and PGA being closest to Intensity = Sa(0.01s)? If I change the intensity level limits to 0.01 and 1g, then I get max values near the fault close to 1g. It appears as if the Sa is just relative to the max. How do I interpret this?
Site Effects - I don't understand the documentation for how to format the text file to input into the Vs30 site effects conversion tool would it just simply be 3 columns: Latitude, Longitude, and Vs30? .txt or CSV files aren't working when I try to upload them. I get the error message "File C:\...\VS30.ft does not exist No existe el archivo C:\...\VS30.grd" When I tried converting the .ft and .grd CAPRA island sample site effects files I get errors reading the file.
What am I supposed to do with the generated event catalog's at the different specified duration (I'm assuming these are just rupture scenarios for a specified return period)?
DEM - I currently do not have access to the government's SRTM DEM (the publicly available file does not convert) Are there ways I can specify the elevation at each of the grid sites via other means?
I have emailed ERN to get access to R-CAPRA to view the exported files, with no response - Is there any way I can access/ view the exported R-CRISIS files? I'm trying to use golden Surfer to view the disaggregation maps .grd files but I get the error "The X minimum and/or maximum parameters in the file header are not valid"

Any other advice would be greatly appreciated. Thanks!

Error load project data .dat

2019-08-30T02:42:03.5730000

Hi R-Crisis team.

I want load project data format (.dat), and I get an error notification like this :

Rectangular Fault Geometry

2019-08-23T09:24:08.0030000

Hello,

when inserting a rectangular fault in R-CRISIS, two vertices are needed as an input representing the the two edges of the upper fault's edge. After also inserting the fault's width and dip angle, R-CRISIS automatically calculates the coordinates and depth of the two bottom edges of the fault. My question is, can i know the formula which is used for this calculation? Specifically, knowing the cordinates and depth of the upper edges of the fault (Lat1, Lon1, Depth1), (Lat2, Lon2, Depth2), and also the fault's width and dip angle, how do i calculate (Lat3, Lon3, Depth3) and (Lat4, Lon4, Depth4) where 3 and 4 represent the botton fault edges?

Thank you very much.

Downloading Issue

2019-08-08T15:20:29.6600000

We are trying to install R-Crisis application on a Dell Workstation with following configuration, but application after downloading for 5 hours its stops downloading after 68 to 70 per of download. Please suggest solution as using a very powerful latest workstation. 64 bit windows 10 Operating System 32 GB Ram 4 TB Hardisk Intel Core i7 3.3 GHz processor 2 GB Nvidia Graphic Card.

Non-Poissonian seismicity model

2019-06-27T06:41:33.4070000

For Non-Poissonian seismicity model, Crisis is using the probabilities to compute seismic hazard. I would like to know what formulations Crisis is using to compute the hazard using probabilities instead of annual exceedance rates? I looked into the manual of Crisis but I didn't find anything related to the formulations for non-Poissonian seismicity models.

How to Inputs Site Effects

2019-06-18T00:59:08.9270000

Good Day. I am a newbies in this software and i find it excellent and interesting. I have a question regarding on how to input site effect in R Crisis. I read back the previous discussion here in forum about grid file and it says that GIS could save as .grd. however i really dont know what are the formats to follow so that i can input the Vs30 in R Crisis from GIS. I hope you can response me in detailed. Thank you very much. This would help me a lot on the progress of my thesis.

Truncating a hybrid model

2019-06-12T11:27:25.2170000

Hello, i have noticed that if i apply truncation to an attenuation table and then creating hybrid model with it, truncation does not apply. Is there any way to truncate a hybrid model in general? I want to use a lot of GMPEs and it is not convenient for me to create a logic tree with truncated tables. Thank you very much.

Recommendations for attenuation tables building

2019-05-30T16:04:41.9300000

Dear R-CRISIS Users,

These are some recommendations to take into account when an attenuation table is going to be built:

1. Define, at least, 20 distances between the minimum and maximum distances of your model.

2. The interval between distances has to be equally logarithmic spaced.

3. Define, at least, 10 magnitudes between the minimum and maximum magnitudes of your model.

Thank you for your preference and interest in R-CRISIS.

Best regards,

Return periods assessed in logic tree calculations

2019-05-30T15:48:14.4100000

Dear R-CRISIS Users,

Remember, to avoid problems in Logic Tree Calculations, make sure that all branches request the same return periods at Global Parameters Menu.

Thank you for your preference and interest in R-CRISIS.

Best regards,

Creation of an attenuation table

2019-05-22T15:32:15.8400000

I want to use an attenuation law that we created with Chilean data to calculate the seismic hazard. The equation is the following for interplate data:

We have to create the table the way the manual explains in .atn format. The first part of the table would be as follows: 4.0 8.9 11 5 500 20 2 0 2E-01 0 0 And then would come the accelerations in g with the law we have, however, I don't know how they should be logarithmically spaced as described on page 39 of the R-CRISIS 2018 manual. To what do the K and NMAG parameters of equations Eq. (2-31), Eq. (2-32), Eq. (2-33) and Eq. (2-34) correspond? Could you help me to understand how to create the table with the correct values logarithmically equi-spaced? Thank you for your help, Marisella.

I can't download the software

2019-04-03T10:31:34.2530000

Hi, I have registered to download the software but i am not recieving any download link in my email. please help

Insert input file

2019-03-15T20:23:12.2130000

Hi everyone,

I s someone can help me about my input file, I used my .DAT file which was working before then when I call it now I got " Conversion from string 0.01 to type Double is not valid" then I changed into another computer and I still got the same error about my data file. Why??? it did work before and then why it did not work now....

Many thanks in advance...

problem in opeining of the (microzonation.ft) in your data set example in R-Crisis

2019-03-02T12:01:33.0970000

Dear R-Crisis Teams,

I want to see the format how the amplification factors are written in your "microzonation.ft" data set given in the example of R-crisis.

How can I open the the "microzonation.ft" data format in the data set example? I tried to open it in notepad,wordpad, surfer, all can not open it. would you please help me?

How to creat amplification factor fille format(.ft) for site effect hazard analysis in R-CRISIS

2019-03-02T10:32:09.3800000

Dear R-Crisis teams,

I have amplification factor computed using Horizontal-vertical spectral ratio(HVSR) from ambient noise measurements in text file format having lon,lat,predominant frequency and the fourth axis amplification factor. How do I put this format in way that R-crisis needs.

Uniform hazard spectra construction?

2019-02-19T19:05:27.6400000

What is the damping for the uniform hazard spectra construction?

Toro 2002 GMPE sigma

2019-02-18T17:48:38.2670000

Dear R-CRISIS team,

I would like to know if is possible to create an attenuation table where the sigma values are dependent on periods, magnitudes and distances in the same time. For example, Toro 2002 (TEA97') GMPE, the sigma values depend on period, magnitude and distance. Is the attenuation table format available in R-Crisis also suitable for these cases?

Thank you for your support.

Regards

coefficient of variation (CoV)

2019-02-12T10:40:50.0900000

Please can I know how to calculate coefficient of variation (CoV) in R-CRISIS?

what is N and k represent.

Thanks

Logic tree

2019-02-10T16:46:16.9470000

Hello, i have a question regarding the logic tree calculations. I wanna know what are the absolutely essentials that the Dat files loaded in the logic tree have to have in common in order for the computation to complete without errors. Thank you very much.

K1 and K2 Constants

2019-02-10T15:44:40.3970000

Hello, i am a little bit confused regarding the K1 and K2 constants in Area sources. Does r crisis first calculate the rupture area and then the radius of the rupture circle, or the other way around? For example i can see that : R=K1*exp(K2*M), and i need to insert K1 and K2. What is R? Is it the rupture length (SSRL or SRL), the rupture width, or something else? For normal faulting i can select the following: Wells and Coppersmith (Normal): K1=0.0207, K2=0.944. I can find no correlation with any of the a and b constants given by wells and Coopersmith. Can you tell me the original equation for which K1 and K2 where calculated and the followed steps? Thank you in advance.

Rectangular Faults

2019-02-09T16:34:29.3330000

Hello, when inserting a rectangular fault i see that the ruptures are located near the center of the fault and along its strike. Is there any way to change this so that ruptures occur in all of its faults surface? I am using epicentral distance gmpes and i see no point in inserting a fault this way. It is turning the fault into a set of point sources. Thank you in advance.

Errors in the Output Hazard Map

2019-02-07T18:24:32.6130000

After running the analysis, All the values calculated have either of the following two errors.

1. NNP=2 , values was impossible to calculate (more than 95% values have this error)

2. NNP=1, the extrapolation was executed for the corresponding return period.

Snapshot of .map file is attached for your kind consideration. Kindly help me in fixing these errors.

Attenuation table problem

2019-01-23T09:18:18.9170000

Dear friends,

I have some problems with creating the tables. When I create a table only for one period value, there is no problem with the software. However as in the attached case, if I use two or more periods, I have encountered some problems. I have got the error message of "Index was outside the bound of the array." An example file is attached as well and can be downloaded clicking Attenuation Table link (picture of this one is given below).

Thanks,

Ozkan

Atkinson & Boore (2006) attenuation law in R-Crisis

2019-01-22T18:40:11.3600000

Dear R-Crisis managers,

My question is if AB06 attenuation law implemented in the R-Crisis includes the "Alternative Stress Parameters". And, in the affirmative case, what is/are the stress (bars) values that use the scale factor ? (See attach)

Additional, I would like to confirm me that the AB11 (Atkinson & Boore, 2011) is not implemented in the last R-Crisis version.

Thank you too much for your support.

Best regards

Jackeline Huertas

Inconsistencies between hazard maps and the excedence curve

2019-01-15T14:13:33.6700000

regards

I have a question about the hazard map:

When i generate the hazard map, it show a max intensity around 0.20g, however, the excedence curve show a intensity around 0.30g.

I don't understand because the maps hazar and excedence curve are different, with a same retorn period.

I thank you help me with a quetions.

value & units for "time between characteristic earthquakes" and relation to slip rate

2019-01-03T09:51:43.0570000

What are the units of the "Median value of the time between characteristic earthquakes"? for the characteristic distribution? Years?

Also, in the slip rate output box we do not get meaningful number (appears as "NaN"). we would expect it should change with response to different values of the "median time".

could not open saved data

2018-12-19T07:10:33.4600000

Im saving the project Im working on.. but after when I want to open it again its empty..

is anyone have idea why does it happen?

p.s- the warning that I get is - computation grid: list file C:\.....shp does not exist

Peak Ground Acceleration (Seismic Hazard Map for T=0s i.e. PGA)

2018-12-15T16:55:34.1270000

I want to get a seismic hazard map for period T= 0s (i.e. for PGA). However, the minimum value of T is 0.01s in CRISIS software. Can anyone help me with this?

Give Dem

2018-12-14T08:38:12.2870000

Hello, i am having a problem in the calculations when i am using a DEM file. In specific when i load a DEM file into r-crisis, while trying to display the results certain sites display the message : 'Some values could not be computed'. This message does not appear when i remove the DEM file. I am pretty sure the loaded DEM does not have any problems since i have used it in the past for other projects. I am attaching some screenshots for better insight.

Thank you in advance.

Seismic Sources - Seattle, WA

2018-12-10T23:16:49.5430000

Hello everyone,

I am very new with using R-Crisis, as I have been using EZ-FRISK to date, but was requested by peer reviewers to switch softwares for my project in Seattle, W.A. EZ-FRISK did not seem to produce similar results to the ones the USGS 2014 hazard maps are showing so we were advised to switch to a different software. I am conducting a PSHA using the USGS (2014) for a site in Seattle and would need to account for the basin effects of the region as well. I was wondering if anyone has a database with the seismic sources and intensities for this region (particularly the Seattle Fault and the Cascadia Subduction Zone). I feel a bit lost using the software and would appreciate any advice/guidelines on how to proceed with my analysis.

Thank you!

GMPEs Abrahamson et al. (2016) and Montalva et al (2017) - R-CRISISv18.4.2

2018-12-03T02:20:37.1830000

Dear R-CRISIS team,

I hope you may help me with the following questions: I want to use the Abrahamson et al. (2016), but there is not a Vs30 value neither the recommended DeltaC1 values in the built-in model. Another issue is related to the period range in Montalva et al. (2017). The paper published in the BSSA indicates a period range from 0 to 10s, but in the R-CRISIS built-in model, the period range is from 0.01 to 10s. Finally, Do you think to include the Zhao et al. (2016) model for subduction earthquakes in later versions?

Thank you in advance for your help.

Kind regards,

Osmar Charca

Problem with Constructing a hybrid model V 18.4.2

2018-11-28T08:29:57.0300000

Hello,

I would like to construct a hybrid model including Akkar 2014 and abrahamson et al. 2014. Everything seems ok. But the r-crisis suddenly not respond. Is anyone who has a suugesiton