Need a help

Anything about geophysics and geoscience: jobs, events, technical or general discussions ...
Post Reply
MaxP00
Member
Member
Posts: 1
Joined: Thu Oct 17, 2019 2:35 pm

Need a help

Post by MaxP00 »

Hi!

I have a sample of data passive array, that has been taken as a circular array of microtremors, and I want to get the Dispersion curve of Love wave and invert it. Can you guide me on how to do this?

How can I do that with what code or software?

Thanks.

99thpercentile
Gold Member
Gold Member
Posts: 85
Joined: Tue Aug 24, 2010 6:31 pm
Website: http://www.nearsurfacegeophysics.net
Location: Evergreen, CO

Re: Need a help

Post by 99thpercentile »

Since you seem to have acquired data from somewhere without a plan on what to do with it, I am going to assume that you don’t have a budget for processing and analysis software. If this assumption is incorrect, then please correct me. If this assumption is correct, then you might want to try Geopsy. I think it will do what you want with the type of data that you have.

http://www.geopsy.org/
Ryan E. North, PhD, RPG, GISP
Principal Geophysicist
ISC Geoscience
ryan.e.north@iscgeoscience.com

jaswantbro19
Member
Member
Posts: 1
Joined: Wed May 27, 2020 5:12 pm

Re: Need a help

Post by jaswantbro19 »

To get Love dispersion curve from ambient vibrations, you must process 3-component recordings. Various alternatives are:
Three component SPAC (Köhler et al., Geophysical Journal International, 2007). It is implemented in Geopsy but undocumented. It will soon evolve.
WaveDec (Marano et al., Geophysical Journal International, 2012 and 2017). The code can be requested at http: //mercalli.ethz.ch/~marra/WaveDec
RTBF (Wathelet et al., Geophysical Journal International, 2018). Available in latest geopsy releases. A tutorial can be found at http ://www. geopsy.org/wiki/index.php/Geopsy-fk
Love and Rayleigh dispersion curves as well as the Rayleigh ellipticity can inverted in dinver. Higher modes are also considered.

Post Reply