Best software for seismic refraction tomography

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Preston09
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Re: Best software for seismic refraction tomography

Post by Preston09 » Sun Dec 02, 2012 12:00 pm

My problem with this Geometrics software SeisImager2D is that it's not stable - I guess it has some bugs, maybe with some memory allocation problems or something. Otherwise it should at least be an OK program for me.

The other thing is that it's not easy to convert the tomography result directly into a layered model - it's hard to get a meaning result. I am still working on it and try to get familiar with this function.

kaminae
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Re: Best software for seismic refraction tomography

Post by kaminae » Sun Dec 02, 2012 2:20 pm

I guess that diffrer between softwares is
stability of inversion's results
Interface options
Simpleness of using
Working with import/export
Using of apriori information

In formal way softwares gives similar results

ncoord
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Re: Best software for seismic refraction tomography

Post by ncoord » Sun Dec 02, 2012 5:52 pm

Good points. Another thing to consider is of course the price :)

resour
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Re: Best software for seismic refraction tomography

Post by resour » Sat Aug 17, 2013 6:19 am

For optimized interpretation of SAGEEP 11 blind refraction session see

http://rayfract.com/tutorials/SAGEEP11_13.pdf

with final tomogram as attached :
Attachments
SAGEEP11_13.png
Smooth inversion after 7 runs 100 WET iterations each, with decreasing wavepath width. Max. WET velocity 3,500 m/s
SAGEEP11_coverage.png
WET wavepath coverage for above tomogram
Last edited by resour on Sat Aug 17, 2013 2:56 pm, edited 4 times in total.

resour
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Re: Best software for seismic refraction tomography

Post by resour » Sat Aug 17, 2013 6:30 am

My interpretation with Rayfract(R) 3.25 and pseudo-2D DeltatV starting model :
Attachments
ZondData_par.txt
Complete list of inversion parameters. Renamed from VELOIT100.PAR .
(5.25 KiB) Downloaded 395 times
3layers_par.txt
Complete list of inversion parameters. Renamed from VELOIT100.PAR .
(5.25 KiB) Downloaded 407 times
ZondData100Iter.png
data.txt input, max. WET velocity 2,500 m/s, CMP intercept time refraction layers overlaid, runtime 3 minutes
ZondData100Cvr.png
WET wavepath coverage for above tomogram
3Layers100Iters.png
seismic3layers_fault.txt input, max. WET velocity 4,000 m/s, XTV inversion for starting model, CMP refraction refractors overlaid, runtime 3 minutes
3Layers100Cvr.png
WET wavepath coverage for above tomogram
data.csv
Rename data.csv to data.asc for Rayfract(R) import. Specify separator "," in File|ASCII column format...
(12.59 KiB) Downloaded 405 times
3layers.csv
Rename 3layers.csv to 3layers.asc for Rayfract(R) import. Specify separator "," in File|ASCII column format...
(3.31 KiB) Downloaded 407 times
Last edited by resour on Tue Aug 20, 2013 3:48 am, edited 4 times in total.

Preston09
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Re: Best software for seismic refraction tomography

Post by Preston09 » Sat Aug 17, 2013 1:58 pm

So Rayfract can also work "blindly" on data, good to know. The results look similar to the results of other programs.

ncoord
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Re: Best software for seismic refraction tomography

Post by ncoord » Sat Aug 17, 2013 5:58 pm

It's nice to have another software to compare :lol:

kaminae
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Re: Best software for seismic refraction tomography

Post by kaminae » Sun Aug 18, 2013 7:08 am

Hi guys! Nice to see that this topic is not frozen.
I have some new ideas about non-linear inversion for refraction tomography based on Madden-Mackie approach.
I suppose it can gives better results in comparision with standart inversion.
Alex
But still with opinion that the best way - including of a priori information in inversion.

resour
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Re: Best software for seismic refraction tomography

Post by resour » Mon Aug 19, 2013 7:29 am

My interpretation of P-waves.txt, with 1D-gradient starting model and 100 WET iterations :
Attachments
PWaves_par.txt
Complete list of inversion parameters. Renamed from VELOIT100.PAR .
(5.26 KiB) Downloaded 419 times
coords.csv
Rename to COORDS.COR for Rayfract(R) File|Update header data|Update Station Coordinates...
(406 Bytes) Downloaded 386 times
p-waves.csv
P-waves.txt formatted as Rayfract(R) .ASC . Rename .CSV to .ASC before import, specify column separator "," in File|ASCII column format...
(3.66 KiB) Downloaded 399 times
PWaves100Iters.png
P-waves.txt input, 1D-gradient starting model, Wavefront method refractor overlaid. Runtime 2 minutes.
PWaves100Cvr.png
WET wavepath coverage for above tomogram
Last edited by resour on Tue Aug 20, 2013 3:51 am, edited 1 time in total.

resour
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Re: Best software for seismic refraction tomography

Post by resour » Tue Aug 20, 2013 12:47 am

And here my S-waves.txt interpretation, also with 1D-gradient starting model and 100 WET iterations, wavepath width 20% :
Attachments
SWaves_par.txt
Complete list of inversion parameters. Renamed from VELOIT100.PAR .
(5.26 KiB) Downloaded 409 times
s-waves.csv
Rename .CSV to .ASC for Rayfract(R) import. Specify colum separator "," in File|ASCII column format...
(3.41 KiB) Downloaded 384 times
Swaves20%It100.png
S-waves.txt input, 1D-gradient starting model, CMP intercept-time refractors overlaid, WET runtime 3 minutes.
SWaves20%Cvr100.png
WET wavepath coverage for above tomogram

Preston09
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Re: Best software for seismic refraction tomography

Post by Preston09 » Tue Aug 20, 2013 11:17 am

It's impressive to have such good results on ground surfaces with highly topographic change!

resour
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Re: Best software for seismic refraction tomography

Post by resour » Wed Sep 04, 2013 9:58 pm

For updated .pdf showing 1D-gradient starting model obtained with 1.5D DeltatV inversion and horizontal averaging and 2D Conjugate Gradient Fresnel volume tomography see

http://rayfract.com/tutorials/ZONDDATA.pdf
Last edited by resour on Tue Jun 24, 2014 7:17 pm, edited 1 time in total.

kaminae
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Re: Best software for seismic refraction tomography

Post by kaminae » Thu Sep 05, 2013 4:36 am

One more synthetic example. Very interesting.
Attachments
ZondData2.txt
SRT file
(40.17 KiB) Downloaded 403 times

resour
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Re: Best software for seismic refraction tomography

Post by resour » Sat Oct 05, 2013 2:20 pm

For a comparison of our Smooth inversion/WET tomography with other algorithms, based on SAGEEP 2011 blind refraction data see

Blind Test of Methods for Obtaining 2-D Near-Surface Seismic Velocity Models from First-Arrival Traveltimes (Colin Zelt et al., JEEG Sep 2013)

http://dx.doi.org/10.2113/JEEG18.3.183

kaminae
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Re: Best software for seismic refraction tomography

Post by kaminae » Sat Oct 05, 2013 2:47 pm

Any results on zonddata2? A small trick in this model.

muroinho007
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Re: Best software for seismic refraction tomography

Post by muroinho007 » Wed Oct 16, 2013 2:00 pm

best is your codes if u can write use matlab for this

http://geophysicscience.blogspot.com/20 ... ysics.html

and an example for 3d masw codes on matlab writed by myself. good luck.


http://geophysicscience.blogspot.com/2013/03/masw.html

resour
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Re: Best software for seismic refraction tomography

Post by resour » Tue Apr 22, 2014 7:16 am

For our SAGEEP14 expanded abstract see

http://rayfract.com/pub/sageep14.pdf

resour
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Re: Best software for seismic refraction tomography

Post by resour » Sun Jun 22, 2014 5:45 am

For optimized interpretation with our Conjugate Gradient Fresnel volume tomography see updated

http://rayfract.com/tutorials/ZONDDATA.pdf

. See below for the final tomogram. We used a square cell sized 0.57m by 0.57m, resulting in a grid size of 41 rows vs. 183 columns and 7,503 nodes.

WET inversion time was 20 seconds on a MacBook Air running Windows 7 in Parallels Desktop 8 using 4 CPU cores in parallel, for inversion of 421 synthetic traveltimes.
Attachments
ConjugateGradient_142WETIters.png

peterkunbo
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Re: Best software for seismic refraction tomography

Post by peterkunbo » Sat Mar 14, 2015 6:08 pm

Hi. I would like to use Kaminae synthetic data for my research. I will appreciate it if you can provide me with your full name or a link to your homepage if you have one so that I can do proper acknowledgement in publication.

kaminae
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Re: Best software for seismic refraction tomography

Post by kaminae » Sun Mar 15, 2015 7:12 am

Hi Peter!
Details of mine:
Alex Kaminsky. Zond software ltd.
www.zond-geo.ru/english
zondgeo@gmail.com

peterkunbo
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Re: Best software for seismic refraction tomography

Post by peterkunbo » Sun Mar 15, 2015 7:00 pm

Thank you Alex (Kaminae).

lecxis
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Re: Best software for seismic refraction tomography

Post by lecxis » Fri Apr 10, 2015 10:41 am

Hello guys, Please I have the Zone software for seismic and electrical resistivity. The problem is I don't know how to use it. the manual that came with it is in Russian( I guess). Can anyone help with a tutorial link or a manual written in English. thanks

kaminae
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Re: Best software for seismic refraction tomography

Post by kaminae » Sat Apr 11, 2015 4:31 am

Hi
Did You checked software's folder for zondres2d_eng.pdf and zondst2d_eng.pdf?

lecxis
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Re: Best software for seismic refraction tomography

Post by lecxis » Sat Apr 11, 2015 9:32 am

The manual I saw in both types were written in Russian. I would appreciate it if you can help me with the English version.

kaminae
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Re: Best software for seismic refraction tomography

Post by kaminae » Sat Apr 11, 2015 9:51 am

zondres2d_eng.pdf inside next archive:
http://zond-geo.ru/zfiles/Zondres2d.zip

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