Essays about: "geophysical survey"

Showing result 21 - 25 of 36 essays containing the words geophysical survey.

  1. 21. Modelling and interpretation of VTEM data from Soppero, Sweden

    University essay from Luleå tekniska universitet/Geovetenskap och miljöteknik

    Author : Linnéa Johansson; [2017]
    Keywords : Transient electromagnetic; geophysics; geophysical modelling; Soppero;

    Abstract : The geological and geophysical knowledge about the northernmost part of Sweden has recently increased due to the Barents project, which includes acquisition of modern geophysical and geological information on behalf of the Swedish Geological Survey (SGU). During August 2013, a helicopter-borne versatile time domain electromagnetic (VTEM) survey was performed by Geotech Ltd, in the Soppero area northeast of Kiruna. READ MORE

  3. 22. TEM investigation on Challapampa aquifer, Oruro Bolivia

    University essay from Lunds universitet/Geologiska institutionen

    Author : Måns Larsson; [2016]
    Keywords : kartering; survey geofysik; sedimentologi; geology; hydrogeology; geophysics; sedimentary; geologi; hydrogeologi; Earth and Environmental Sciences;

    Abstract : I denna studie utfördes en TEM (transient elektromagnetisk) undersökning på den Bolivianska altiplanon, norr om staden Oruro. I Oruro finns det ett underskott av dricksvatten och deras huvudsakliga vattenförsörjning kommer från aquiferen Challapampa. READ MORE

  4. 23. The influence of weakness zones on the tunnel stability based on investigations in Bodøtunnelen

    University essay from Luleå tekniska universitet/Geoteknologi

    Author : Viktor Renström; [2016]
    Keywords : Rock mechanics; Numerical modeling;

    Abstract : When planning for a tunnel, the ground conditions in which the tunnel is going to be excavated through will be investigated to different extent. Lack of relevant pre-investigation data or misinterpretations of the available data can cause both economical and/or unexpected stability problems. READ MORE

  5. 24. Reflections in the dark : Ground-penetrating radar surveys for the detection of Viking Age and early medieval harbor remains in Sigtuna, Sweden

    University essay from Stockholms universitet/Arkeologiska forskningslaboratoriet

    Author : Anne Homeister; [2015]
    Keywords : Geophysik; Georadar; Sigtuna; harbor; Viking Age; early medieval; Geofysik; Georadar; Sigtuna; Uppland; hamnar; Draken; Urmakaren; Koppardosan; Borgmästarängen; Vikingatiden; tidig medeltid;

    Abstract : In this thesis a ground-penetration radar survey was carried out in four areas, Borgmästarängen, Draken, Urmakaren and Koppardosan in Sigtuna. The aim of this paper is to detect remnants of the Viking Age harbor at those chosen sites. READ MORE

  6. 25. Spectral time domain induced polarization : factors affecting spectral data information content and applicability to geological characterization

    University essay from Lunds universitet/Geologiska institutionen

    Author : Azadeh Rezvani; [2015]
    Keywords : Liikavaar; geology; geophysics; resistivity; induced polarization; Aititk mine; AarhusInv; Earth and Environmental Sciences;

    Abstract : The geo-electrical survey (resistivity and induced polarization) with different settings, arrangements, time base, spreads and waveforms (50% and 100% duty cycle waveform) was carried out over the Liikavaara depo-sit, near the Aitik mine, in northern Sweden and all the measured data was inverted in two different softwares: Res2Dinv and AarhusInv. Surveys of induced polarization (IP) often contain data of low quality, due to the high sensitivity against noise sources and coupling effects. READ MORE