Search found 43 matches

by luigiV
Wed Mar 24, 2021 11:11 am
Forum: Dinver usage
Topic: very different bedrock velocity using or not the ellipticity peak
Replies: 0
Views: 103

very different bedrock velocity using or not the ellipticity peak

Hi Marc, welcome back to the forum. I would like to submit this situation where the result of the joint inversion is very different using or not the ellipticity peak. This is evident both in the ellipticity plot and in that of the ground profiles where the bedrock speed ranges from 700m/s to 3000m/s...
by luigiV
Mon Jan 25, 2021 4:12 pm
Forum: Geopsy usage
Topic: Geopsy tools doesn't read the *.log file
Replies: 0
Views: 334

Geopsy tools doesn't read the *.log file

Hi Marc, I renew a question from some time ago concerning the fact that a .log file created with Geopsy with a version later than 3.0 is no longer read by the same release after some time and after installing later versions (but I don't know if this is a determining factor). I bring you this example...
by luigiV
Thu Jan 21, 2021 9:11 am
Forum: Dinver usage
Topic: why different answers from same data using different Geopsy Dinver releases?
Replies: 11
Views: 1544

Re: why different answers from same data using different Geopsy Dinver releases?

Hi Marc, I take advantage of the fact that you haven't read my last post yet to submit another question. In another site I had a good H / V curve with two peaks, one at 1Hz and the other at 12Hz. I got the ellipticity curve with HVTFA with m = 8 and plotted with max2curve with nppm = 4. I resampled ...
by luigiV
Mon Jan 18, 2021 5:26 pm
Forum: Dinver usage
Topic: why different answers from same data using different Geopsy Dinver releases?
Replies: 11
Views: 1544

Re: why different answers from same data using different Geopsy Dinver releases?

Hi Marc, I saw the outcome of your additional run where the Vs profile basically agrees with mine. Do the ellipticity differences remain for the low frequency part? I have now seen that you have released version 3.3.6 and I will try with that to run the data. I enclose the misfit of the first 7 runs...
by luigiV
Sat Jan 16, 2021 11:15 am
Forum: Dinver usage
Topic: why different answers from same data using different Geopsy Dinver releases?
Replies: 11
Views: 1544

Re: why different answers from same data using different Geopsy Dinver releases?

Hi Marc, tried to repeat your inversion following your track. I resampled the two curves in the 0.1Hz-25Hz range with 50 samples. I adopted what I believe was your final model (6 layers with the last two before the half-space confined between 60m and 200m and 80m and 200m). I used Dinver 3.3.5 with ...
by luigiV
Wed Jan 13, 2021 4:35 pm
Forum: Dinver usage
Topic: why different answers from same data using different Geopsy Dinver releases?
Replies: 11
Views: 1544

Re: why different answers from same data using different Geopsy Dinver releases?

Hi Marc, first I would like to thank you for the excellent joint reversal demonstration, impossible for me to successfully complete with the help of only published technical documentation. At the site to which the data refer, 6 night-time single station measurements were carried out lasting 120 minu...
by luigiV
Mon Jan 11, 2021 2:42 pm
Forum: Geopsy usage
Topic: Export Microtremor Results in Frequency domain
Replies: 6
Views: 1069

Re: Export Microtremor Results in Frequency domain

Hi Marc Taking up the final part of your answer I ask you why if in the header of my Saf file I impose that the data units are m / s the ordinate of the PSD is always (counts) ^ 2 / Hz? SESAME ASCII data format (saf) v. 1 (this line must not be modified) SAMP_FREQ = 125 NDAT = 675000 START_TIME = 20...
by luigiV
Thu Jan 07, 2021 3:36 pm
Forum: Dinver usage
Topic: why different answers from same data using different Geopsy Dinver releases?
Replies: 11
Views: 1544

Re: why different answers from same data using different Geopsy Dinver releases?

Hi Marc, I did as suggested and I got the Marc.dinver file from the 3.3.4 release where you can see from the different runs how the misfit value is very variable and high. On the contrary, the marc2.dinver file obteined by the 2.9.0 release has not only lower misfit values, but also decidedly more s...
by luigiV
Wed Jan 06, 2021 9:51 am
Forum: Geopsy usage
Topic: gphistogram for plotting azimuth vs freq or slowness data from max file
Replies: 7
Views: 876

Re: gphistogram for plotting azimuth vs freq or slowness data from max file

Hi Marc, from your words I understand that you have successfully checked the .max file created with the 2.9.0 release with the new 3.5 branch although the parsing is different from what you get with the branches after 3.0. In these, in fact, the slowness is at column 4 and the azimuth at 5, while in...
by luigiV
Mon Jan 04, 2021 10:22 pm
Forum: Geopsy usage
Topic: gphistogram for plotting azimuth vs freq or slowness data from max file
Replies: 7
Views: 876

Re: gphistogram for plotting azimuth vs freq or slowness data from max file

Hi Marc,
Can you send me the original HRFK.max file?
I attach the file

Thanks
Luigi
by luigiV
Mon Jan 04, 2021 10:11 pm
Forum: Dinver usage
Topic: why different answers from same data using different Geopsy Dinver releases?
Replies: 11
Views: 1544

Re: why different answers from same data using different Geopsy Dinver releases?

Hi Marc,
sorry but what do you mean by .dinver file? the dinver ground profiles models or the dinver app 3.4, or the ellipt.txt and disper.txt, or ...

Thanks
by luigiV
Tue Dec 29, 2020 9:52 am
Forum: Geopsy usage
Topic: gphistogram for plotting azimuth vs freq or slowness data from max file
Replies: 7
Views: 876

Re: gphistogram for plotting azimuth vs freq or slowness data from max file

Hi Marc, thanks. In documentation I found awk 'substr($1,1,1)!="#" {print $4, $3}' my.max |\ gphistogram -x-min -0 -x-max 360 -x-count 72 -x-sampling linear \ -y-min 0 -y-max 8 -y-count 100 -y-sampling linear and the error message is: awk command not found (as you wrote). the command lines you indi...
by luigiV
Sun Dec 27, 2020 5:59 pm
Forum: Geopsy usage
Topic: gphistogram for plotting azimuth vs freq or slowness data from max file
Replies: 7
Views: 876

gphistogram for plotting azimuth vs freq or slowness data from max file

Hi Marc,
I want to ask you, please, how can I plot the azimuth vs frequency or vs slowness data of a max file using Geopsyland. The command line in the documentation isn't accepted, of course, so is there another command or an other way to represent that data?
Thanks
Luigi
by luigiV
Sun Dec 27, 2020 9:39 am
Forum: Dinver usage
Topic: why different answers from same data using different Geopsy Dinver releases?
Replies: 11
Views: 1544

why different answers from same data using different Geopsy Dinver releases?

Hi Marc, as already mentioned in my topic 402 (last post) I found different answers from the joint inversion using Dinver of the 2.9.0 release to that of the 3 series and I don't understand why. I am attaching the example of the same ellipticity curve (right flank of the peak) and of the same disper...
by luigiV
Sat Dec 26, 2020 4:14 pm
Forum: Geopsy usage
Topic: N/V or E/V it is possible to do?
Replies: 2
Views: 401

Re: N/V or E/V it is possible to do?

Thanks, Marc with my best wishes for a happy new year!