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You have to specify the atan(H/V) in degrees. The stddev is not on a log scale for ellipticity angle. There is a minor bug in the latest release to display stddev: in the legend, set the line thickness of symbols to something other than 0. Be careful that a HV calculated in the classical way is not ...

Hi Joel,

Can you upload the .gpy file. Not the SAC files?

Hi Stefan, Strange, is it possible to kill Figue from the process control (long time I haven't use a Windows environment)? I guess this is the same problem if you do the same action from any other GUI application within Geopsy package. I can't remember if it is built against Qt5 or Qt6. Can you chec...

The log is no mandatory, you can safely skip it.

The stddev is calculated on a log scale, this is exp(sigma_log). It is hence a multiplicative factor to the mean to get the one-standard deviation range. In this case you have a 47% error range. The weight is the number of samples used to compute the statistics. In other words, it is the number of t...

The origin of the two peaks might be diverse. Effectively, it can be two resonating layers with sufficiently different characteristic frequencies. It can have a body wave origin and hence gpsh simulations are fine. Ellipticity of Rayleigh waves can be also at work, and higher modes may play a role. ...

The curves are stored in the .hv file. First two criteria can be easily checked from them. f₀ {from average} is the maximum observed on the average curve. f₀ {from windows} (the gray bands indicate the average and the standard deviation) is computed for each individual time windows and summarized b...

Hi Shin, I wanted to assess whether the analyzed data meets the SESAME criteria (e.g., whether the frequency with an A/2 value falls within a specific range) and tried to download the graph. To do this, I followed the process: H/V Results -> Properties -> Layer -> result::Average -> Actions -> Save,...

Hi Fabiola, I noticed in the log files that you selected time windows between 30 and 3600 s. This option is there a bit for historical reasons. I suggest you do not use it. Prefer "Exactly". This option was there at a time when FFT was not achieved with FFTW and restricted to power of 2 nu...

Hi Chenuy, Hobiger et al. 2013 also tried successfully to invert both flanks. Your profiles nicely reproduce the observed ellipticity curve even if it is not perfect. Just one detail, the errors look rather large. I'd like to make sure that there was no error while importing this curve into dinver a...

Hi,

What kind of theoretical HVSR? Through the assumption of energy equipartition (Sanchez-Sesma et al. 2011 and many other papers after them, e.g. Garcia-Jerez et al. 2016)? No, I've never coded it inside geospy.

Cosine taper is continuous modification of the amplitude of the signal over the whole window. Usually, only the ends of the signal window should be modified. The best choice is then 'Tukey', a flat central part at 1 and cosine variations to 0 on both ends. The parameter is length (%) of the affected...

Hi, As a first approach, you can manually pick the two portions of dispersion curves on spac2disp plot ([~2,~3] Hz and [~7,~12] Hz). Export the curves to a file and import them into dinver specifying the modes appropriately. Did you try Capon FK? Are there also two modes? Are they three-component ge...

Can you post the log files generated by each version? Standard deviations and individual curves look quite different between the two versions. Were they calculated with the same parameters? There might be minor differences even though the parameters are at the same values because computation evolved...

Hi Fabiola, Here are some answers. It they are incomplete feel free to continue the discussion. You have to select "Tukey". You have to set the signal property "AmplitudeUnit" (see menu "View/Set data fields" for a table to show/edit it) to Acceleration . Set also "...