search

chenyk1990 / passive_imaging

This is an open-source package for passive seismic imaging. The methodology is detailed in Chen, Y., O.M. Saad, M. Bai, X. Liu, and S. Fomel, 2021, A compact program for 3D passive seismic source-location imaging, Seismological Research Letters. A PROOF version of the paper can be found at https://drive.google.com/file/d/1jAkbbAsGbpBqjzzjVogDcN7vnmmrgfqk/view?usp=sharing
4 stars 0 forks source link

does this package related to rtm #2

Open vira12x opened 2 years ago

vira12x commented 2 years ago

Does this code based on reverse time migration or time reversal imaging.How to call it while using in publication.

chenyk1990 commented 2 years ago

It should better be grouped time-reversal imaging method. RTM is more an active-source terminology. The grouped TRI method of this code is based on the same idea as RTM. Hope that is helpful.

-Y

vira12x @.***> 于2022年6月23日周四 12:48写道：

Does this code based on reverse time migration or time reversal imaging.How to call it while using in publication.

— Reply to this email directly, view it on GitHub https://github.com/chenyk1990/passive_imaging/issues/2, or unsubscribe https://github.com/notifications/unsubscribe-auth/ADHCWETQONQW73BS6GVAJSTVQSPPHANCNFSM5ZVFRC5A . You are receiving this because you are subscribed to this thread.Message ID: @.***>

vira12x commented 2 years ago

Dear Chen thank you so much for your response. I am using this package to locate the earthquake source with high resolution.It would be really helpful if you could clarify what values should be set for padding parameters beg1,beg2,beg3 etc. for earthquake source (not microseismic) so that source location would be more accurate.Please let me know

chenyk1990 commented 2 years ago

First of all, I have revised the code today to make it easier to use (regarding the padding and boundary conditions). So, please make sure you update the repository https://github.com/chenyk1990/passive_imaging.

Secondly, regarding your concern about the padding parameter. It is chosen based on the following line. nb=30 #size of ABC layers (Here we use 30 grids on each side, e.g., top/bottom,left/right, front/back)

Thirdly, the nb size depends on your actual model size, I recommend you use one-third of your model size. It is a tradeoff between performance (ABC) and computational cost.

Hope that helps. YC

vira12x @.***> 于2022年6月27日周一 13:55写道：

Dear Chen thank you so much for your response. I am using this package to locate the earthquake source with high resolution.It would be really helpful if you could clarify what values should be set for padding parameters beg1,beg2,beg3 etc. for earthquake source (not microseismic) so that source location would be more accurate.Please let me know

— Reply to this email directly, view it on GitHub https://github.com/chenyk1990/passive_imaging/issues/2#issuecomment-1167756396, or unsubscribe https://github.com/notifications/unsubscribe-auth/ADHCWEXSYG3X7E7QPG5XVLLVRH2L3ANCNFSM5ZVFRC5A . You are receiving this because you commented.Message ID: @.***>

vira12x commented 2 years ago

Good morning. Thank you so much Chenyk1990 for your valuable suggestions.Following your suggestions i made some changes to the large mod3d.c code in order to locate earthquake sources.During modification I encounter a lot of challenges and errors and now I think that 1d/2d version of the same code may be helpful for my case. It would be appreciated if you could suggest the open sourced 1d/2d version of the same location program(if available).

Best Viraj

chenyk1990 commented 2 years ago

Thanks for your feedback. I'll include it in my to-do list. It just takes some time, but I will. Please keep an eye on it.

Good luck! Yangkang Chen

vira12x @.***> 于2022年6月28日周二 13:09写道：

Good morning. Thank you so much Chenyk1990 for your valuable suggestions.Following your suggestions i made some changes to the large mod3d.c code in order to locate earthquake sources.During modification I encounter a lot of challenges and errors and now I think that 1d/2d version of the same code may be helpful for my case. It would be appreciated if you could suggest the open sourced 1d/2d version of the same location program(if available).

Best Viraj

— Reply to this email directly, view it on GitHub https://github.com/chenyk1990/passive_imaging/issues/2#issuecomment-1169059099, or unsubscribe https://github.com/notifications/unsubscribe-auth/ADHCWESWAPC6XEWJI6QOCMDVRM5XDANCNFSM5ZVFRC5A . You are receiving this because you commented.Message ID: @.***>