SPECFEM / specfem2d

SPECFEM2D simulates forward and adjoint seismic wave propagation in two-dimensional acoustic, (an)elastic, poroelastic or coupled acoustic-(an)elastic-poroelastic media, with Convolution PML absorbing conditions.
https://specfem.org
GNU General Public License v3.0
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Need help regarding Amplification factor #1196

Open vikasrajisro opened 11 months ago

vikasrajisro commented 11 months ago

Dear all I am using CMT solution as source in source file Mxx = 1.3437361320914318 X 10^16 #N-m Mzz = -4.177076427989025 X 10^16 #N-m Mxz = 8.771237000918445 X 1o^15 # N-m

I am bit confused how to used Amplification factor ( in what amout). if i used A = 1.0 d10 get the very large ampitude. Screenshot from 2023-11-30 17-06-08

It will be great if someone suggest how to tackle the issue. Thanks

homnath commented 11 months ago

If you use the actual values for Mxx, Mzz, and Mxz, you should use an amplification factor of 1.0.


Hom Nath Gharti, PhD Assistant Professor | Digital Earth Scientist https://www.digitalearthscience.com/ Department of Geological Sciences and Geological Engineering Miller Hall 314, 36 Union St Queen’s University Kingston, ON K7L 3N6, Canada

Queen’s University is situated on traditional Anishinaabe and Haudenosaunee Territory.https://www.queensu.ca/encyclopedia/t/traditional-territories


From: vikasrajisro @.> Sent: Thursday, November 30, 2023 6:49 AM To: SPECFEM/specfem2d @.> Cc: Subscribed @.***> Subject: [SPECFEM/specfem2d] Need help regarding Amplification factor (Issue #1196)

Dear all I am using CMT solution as source in source file Mxx = 1.3437361320914318 X 10^16 #N-m Mzz = -4.177076427989025 X 10^16 #N-m Mxz = 8.771237000918445 X 1o^15 # N-m

I am bit confused how to used Amplification factor ( in what amout). if i used A = 1.0 d10 get the very large ampitude. Screenshot.from.2023-11-30.17-06-08.png (view on web)https://github.com/SPECFEM/specfem2d/assets/116071999/6b01a92b-8357-40ea-8e7a-1c2d83fb18cb

It will be great if someone suggest how to tackle the issue. Thanks

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vikasrajisro commented 11 months ago

Thanku for quick consideration of my issue. I go through as you suggested that is (the value used for Mxx Mzz Mxz used is actual ) and amplification factor 1.0 but still amplitude is not realistic Screenshot from 2023-12-01 01-40-12 , plz suggest