Essays about: "Geophysical Measurements"

Showing result 21 - 25 of 42 essays containing the words Geophysical Measurements.

1. 21. Application of ERT and IP for localisation of chlorinated hydrocarbons at a former dry-cleaning facility

   University essay from Lunds universitet/Teknisk geologi; Lunds universitet/Väg- och vattenbyggnad (CI)

   Author : Hedda Jönsson; Anna Wiberg; [2017]
   Keywords : Chlorinated hydrocarbons; PCE; Hagforstvätten; Geophysics; Resistivity; Chargeability; Geological features; Man-made structures; Technology and Engineering; Earth and Environmental Sciences;

   Abstract : At Hagforstvätten a dry-cleaning facility operated 1970 – 1993 and leached huge amounts of tetrachloroethene (PCE) to soil and groundwater. This study was conducted at the contaminated site and focused on applying the geophysical methods Electrical Resistivity Tomography (ERT) and Induced Polarization (IP) to investigate if it was possible to locate source zone, degradation zones and groundwater plumes of PCE. READ MORE

3. 22. Downhole Physical Property Logging of the Blötberget Iron Deposit, Bergslagen, Sweden

   University essay from Uppsala universitet/Institutionen för geovetenskaper

   Author : Philip Johansson; [2017]
   Keywords : Borehole logging; resistivity logging; magnetic susceptibility; magnetite; Bergslagen; Borrhålsloggning; geofysik; apatitjärnmalm; Bergslagen;

   Abstract : Geophysical methods are frequently applied in conjunction with exploration efforts to increase the understanding of the surveyed area. Their purpose is to determine the nature of the geophysical response of the subsurface, which can reveal the lithological and structural character. READ MORE

4. 23. 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

5. 24. 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

6. 25. Water Well Investigations in the Nampula Province, Mozambique - A Minor Field Study

   University essay from Lunds universitet/Teknisk geologi; Lunds universitet/Ekosystemteknik (CI)

   Author : Elin Olsson; [2016]
   Keywords : Geophysical borehole logging; resistivity; natural gamma radiation; Nampula; Mozambique; Technology and Engineering;

   Abstract : Access to clean water for drinking and sanitation is a human right. Today water scarcity is a large problem and inequality in access to safe water is a striking truth. READ MORE