Re: mag 3d inversion suggestions?

Max,

In case you are interested, we are open to contributions to the 
"potential" supplement.

Joaquim

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> Dear Ashton,
>
> I have a 3D joint inversion code written in C++ that I could share. It
> currently has MT, refraction seismics and gravity and I recently added
> total field magnetics (without much testing so far though). It is
> quite flexible, so adding an existing surface wave inversion should
> not be a major problem.
>
> Walter is making an important point though. Potential field data alone
> add little information unless they are strongly constrained. Combining
> seismic velocities and susceptibilities in a joint inversion creates a
> bit of a dilemma. They are quite different properties so we don't want
> to couple the two methods two strongly, but then without strong
> guidance from the seismics the magnetic part of the inversion will
> very likely do funny things.
>
> I am happy to discuss this further if you are interested.
>
> Regards
>
> Max
>
> On 27/02/14 15:01, andrealphus wrote:
>> I was hoping to get peoples input on available open source 3d
>> magnetic inversion routines.
>>
>> I'm working on a surface wave inversion (ambient seismic noise)
>> problem, but am interested in incorporating an available magnetic
>> dataset - and doing a simaluteanous joint inversion (SJI).
>>
>> I'm familiar with MAG3D (UBC), and have heard of GRMAG3D (CEMI),
>> but don't know any beyond that. I'm looking for something freely
>> available to academia, and open source (so I can modify
>> optimization constraints - fortran/c/matlab).
>>
>> Any suggestions?
>>
>> (I'd like to know whats available before I decide to sit down and
>> write my own)
>>
>> -ashton
>>
>> To unsubscribe, send the message "signoff gmt-help" to
>> [email protected]
>>
>
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