[CIG-SEISMO] MINEOS synthetic amplitudes

[Ana Ferreira (ENV)]

Januka,
As I just told you, mineos has been extensively benchmarked against other normal mode codes as well as against specfem3d, so it should be a fairly robust, reliable code. With German colleagues, we have used it to carry out surface wave amplitude ratios of translations versus rotations and got fairly stable measurements, particularly for fundamental mode-only synthetics (see e.g. my GRL paper, Kurrle et al., 2010). So, I don't think that there should be any obvious/strong "instabilities of amplitudes" in mineos... I think that our key priority should really be to focus on the measurement technique and to check carefully and trace back what's going on with some of the observed outliers, focusing on a smaller test set of synthetics. You have already improved the measurements since the last group meeting and I think that there is still scope for improvement from what you showed me today, if you follow the approach that we discussed.
Cheers,
Ana

________________________________
From: cig-seismo-bounces at geodynamics.org [cig-seismo-bounces at geodynamics.org] on behalf of Januka Attanayake [jattanayake at yahoo.com]
Sent: Thursday, February 20, 2014 11:22 AM
To: cig-seismo at geodynamics.org
Subject: [CIG-SEISMO] MINEOS synthetic amplitudes

Hello,
I would like to know if there are known instabilities of amplitudes over distance in synthetics generated by MINEOS? For example, could there be an instance where the amplitudes might oscillate between a maximum and a minimum for a given reference Earth model over a certain distance?

Many Thanks !

Januka.

--
Januka Attanayake
Postdoctoral Research Associate
Laboratório de Sismologia
Complexo Interdisciplinar
Departamento de Física
Instituto Superior Técnico
Av. Rovisco Pais, 1
1049-001 Lisboa, Portugal

Honorary Research Associate
University College London

University email: januka.attanayake at ist.utl.pt
Homepage: http://sites.google.com/site/janukaattanayake/
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