Resistivity and Soil

Bekti:

Thank you mate,
If I have data of soil resistivity on ohm meter, can I estimate the litologiy / laminations of various ground soil and what of the parameters.
This is trial version software, can you give me the full software or patch? Where I must be download? in rapidshare?
Cheeeeeers

Alva:

You can estimate the litology of various ground soil by using only true resistivity data. There are three kinds of resistivity in electrical imaging (tomography) such as equipment resistivity (R), apparent resistivity (rho_a), and true resistivity (rho). If you just have rho_a data you need to convert it first to rho data by using inversion software to solve rho_a to rho inverse problem.

Before interpreting rho data you need to know about geologic condition, water table, climate, material resistivity characteristic, and organic matter contents. Geologic condition important in determining what kind of mineral that formed soil formation. Water table elevation is important to know because water can make a drastic change in soil resistivity especially when the surface soil is rich in acidic ion from organic matter decomposition. Material resistivity is used for converting resistivity data to lithology so resistivity data need to be correlated with nearest borehole.

I’m so sorry actually Geophysical Department of Moskva State University just share the shareware version, so I don’t have the full version because it’s so expensive. I think that for just on educational purpose, the shareware version is enough.

4 responses to “Resistivity and Soil

  1. kubra

    I’m a geophysics engineer in istanbul university in Turkey. i have a problem. i am preparing a final project and i have to use rock work. i try ordering my borehole logs. lithology model’s result isn’ t my borehole logs.it’s too different from real logs. for example in my logs on top is soil but soil in middle in model. i think this problem about g- value in lithology table. what do you think how i ordering g value ? what mean g-value in programme? can you help me please? so thanks..

  2. Alva

    Yes definitely your problem is in G-value..G value mean order of your lithology. Smallest G value on your lithology mean it’s laid on the top and the biggest G value mean it’s laid on the base..

    Try to change your G value of your lithology, put smallest G-value on your top layer then put biggest G-value on your base layer…

    if your problem still haven’t solved yet, be free to contact me via this site..

    Thanks, Regards

    Alva Kurniawan

  3. Iip Fajar Surya

    mas alva maw nanya
    sya iip
    sya mengolah data resistivitas dan mmbuat modelling 3D dengan mnggunakan rockwork tp hasil pnampang model yg sya buat tampilannya hitam semua
    itu kira2 knpa ya??
    mksh atas tanggapanny

  4. Alva Kurniawan

    Lip Fajar Surya..coba kirim data dan hasil pengolahannya ke email saya, akan saya periksa apa yang salah. Email saya alva_the_a@yahoo.co.id.

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