Sökning: "P.-I. Olsson"

Hittade 2 avhandlingar innehållade orden P.-I. Olsson.

  1. 1. Optimization of time domain induced polarization data acquisition and spectral information content

    Författare :P.-I. Olsson; Teknisk geologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; induced polarization 1P ; DCIP; spectral information; Data quality; Signal Processing;

    Sammanfattning : The need for detailed subsurface information is increasing due to city expansion and infill projects as well as subsurface construction projects. One common method for acquiring this geo-information is the direct current resistivity and time domain induced polarization method (DCIP) that measures the electrical resistivity and chargeability of the subsurface. LÄS MER

  3. 2. Advances in time–domain induced polarisation tomography : Data acquisition, processing and modelling

    Författare :Per-Ivar Olsson; Teknisk geologi; []
    Nyckelord :Tomography; Signal–to–noise ratio; Waveform; Duty–Cycle; induced polarisation; Electrical properties;

    Sammanfattning : What would you find below your feet – how do you find out? Perhaps you could look at a geological map, drill, or dig? That could work, but sometimes the maps are not detailed enough, and digging everywhere to find out is impractical. Imagine if you could develop a method that allows you to see straight through the ground, as x–rays through the body! To some extent, such methods already exist; you can for example send electric current into the ground that tells you what lies beneath when it returns. LÄS MER