Essays about: "CSAMT"

Found 4 essays containing the word CSAMT.

  1. 1. Processing of Noisy Controlled Source Audio Magnetotelluric (CSAMT) Data

    University essay from Uppsala universitet/Geofysik

    Author : Julia Fridlund; [2019]
    Keywords : CSAMT; noise; magnetotelluric transfer functions; robust processing; transients; bias; CSAMT; brus; magnetotelluriska överföringsfunktioner; robust processering; transienter; bias;

    Abstract : Controlled Source Audio Magnetotellurics (CSAMT) is a geophysical method for characterizing the resistivity of the subsurface with the help of electromagnetic waves. The method is used for various purposes, such as geothermal- and hydrocarbon exploration, mineral prospecting and for investigation of groundwater resources. READ MORE

  3. 2. Data processing of Controlled Source Audio Magnetotelluric (CSAMT) Data

    University essay from Uppsala universitet/Geofysik

    Author : Oskar Rydman; [2019]
    Keywords : CSAMT; detrending; coherency; transients; time series; processing; CSAMT; detrending; koherens; transienter; tidserier; processering;

    Abstract : During this project three distinct methods to improve the data processing of Controlled Source Audio Magnetotellurics (CSAMT) data are implemented and their advantages and disadvantages are discussed. The methods in question are: Detrending the time series in the time domain, instead of detrending in the frequencydomain. READ MORE

  4. 3. 1D and 2D Modelling of AMT and CSAMT Measurements from Swedish Lapland - A Case Study

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Lisa Dossow; [2018]
    Keywords : audiomagnetotellurics; controlled source audiomagnetotellurics; Gällivare; Kiruna; time series processing; 1D and 2D inversion;

    Abstract : Audiomagnetotelluric measurements with (CSAMT) and without (AMT) a controlled source were performed near Gällivare and Kiruna in Swedish Lapland in order to retrieve representative conductivity models of the subsurfaces. Magnetotelluric transfer functions were gained from processed time series’ and subsequently inverted to generate the sought models successfully. READ MORE

  5. 4. A note on electromagnetic field theory and 1D modeling of synthetic CSAMT data

    University essay from Geofysik

    Author : Hannes Hellsborn; [2009]
    Keywords : ;

    Abstract : Controlled source audio magnetotellurics, or CSAMT, is one of the principal methods for electromagnetic measurements. A 1D model is a simple representation but a quite easy way to find the main features of the Earth's subsurface. The 1D inversion of CSAMT data that has been used in this report was presented by H.M. READ MORE