Now showing items 66-85 of 436

    • Can high-resolution marine geophysical data be inverted for soil properties? 

      Vardy, Mark E.; Vanneste, Maarten; Henstock, Timothy J.; Morgan, Eugene C.; Pinson, Luke (Journal article, 2015)
    • Can polyethylene passive samplers predict polychlorinated biphenyls (PCBs) uptake by earthworms and turnips in a biochar amended soil? 

      Silvani, Ludovica; Hjartardottir, Sigurbjørg; Bielská, Lucie; Škulcová, Lucia; Cornelissen, Gerard; Nizzetto, Luca; Hale, Sarah (Peer reviewed; Journal article, 2019)
      A pot experiment was carried out in which aged polychlorinated biphenyls (PCBs) contaminated soil was amended with biochar, and three phases; earthworms, turnips and polyethylene (PE) passive samplers, were added simultaneously ...
    • Caprock characterization of Upper Jurassic organic-rich shales using acoustic properties, Norwegian Continental Shelf 

      Hansen, Jørgen André; Mondol, Nazmul Haque; Tsikalas, Filippos; Faleide, Jan Inge (Peer reviewed; Journal article, 2020)
      Our analysis of a comprehensive well log database and complementary mineralogical and geochemical information indicates that the risk for Upper Jurassic shales on the Norwegian Continental Shelf (NCS) to permit severe ...
    • Capturing the coupled hydro-mechanical processes occurring during CO2 injection – example from In Salah 

      Bjørnarå, Tore Ingvald; Mathias, Simon A.; Nordbotten, Jan Martin; Park, Joonsang; Bohloli, Bahman (Journal article, 2014)
      At In Salah, CO2 is removed from the production stream of several natural gas fields and re-injected into a deep and relatively thin saline formation, in three different locations. The observed deformation on the surface ...
    • Capturing the coupled hydro-mechanical processes occurring during CO2 injection – example from In Salah 

      Bjørnarå, Tore Ingvald; Mathias, Simon A.; Nordbotten, Jan Martin; Park, Joonsang; Bohloli, Bahman (Journal article, 2014)
      At In Salah, CO2 is removed from the production stream of several natural gas fields and re-injected into a deep and relatively thin saline formation, in three different locations. The observed deformation on the surface ...
    • Cation exchange capacity of biochar: An urgent method modification 

      Munera-Echeverri, Jose L; Martinsen, Vegard; Strand, Line Tau; Zivanovic, Valentina; Cornelissen, Gerard; Mulder, Jan (Peer reviewed; Journal article, 2018)
      Biochar, produced through pyrolysis of organic matter, is negatively charged, thus contributing to electrostatic adsorption of cations. However, due to its porous structure and contents of alkaline ashes, the determination ...
    • CCS Leakage Detection Technology - Industry Needs, Government Regulations, and Sensor Performance 

      Waarum, Ivar-Kristian; Blomberg, Ann Elisabeth Albright; Eek, Espen; Brown, Jock; Ulfsnes, Amund; Carpenter, Mike; Grimsrud, Torleiv S.; Park, Joonsang; Cornelissen, Gerard; Sparrevik, Per (Peer reviewed; Journal article, 2017)
      Reliable CCS monitoring is vital in order to confirm that injected CO2 stays in the reservoir as intended, and that any occurring leakage is promptly detected allowing corrective actions to be initiated. Motivations for ...
    • Cements for tunnel grouting – Rheology and flow properties tested at different temperatures 

      Bohloli, Bahman; Skjølsvold, Ola; Justnes, Harald; Olsson, Roger; Grøv, Eivind; Aarset, Arnstein (Peer reviewed; Journal article, 2019)
      This paper presents work being carried out in Work Package 3 of TIGHT (True Improvement in Grouting High pressure Technology for tunnelling) project. The objective is to investigate flow and mechanical properties of three ...
    • Challenges for the closure and natural rehabilitation of bauxite residue disposal sites 

      Torgersrud, Øyvind; Breedveld, Gijs D.; Okkenhaug, Gudny; Malme, B.; Cataldi, P. (Chapter, 2019)
      In the Bayer process, bauxite ore is digested with NaOH at high temperature and pressure, which results in the production of alumina and the recrystallisation of various residual minerals ending up in a bauxite residue. ...
    • Characterisation of sand-steel interface shearing behaviour for the interpretation of driven pile behaviour in sands 

      Tingfa, Liu; Chen, Haoruo; Quinteros, Santiago; Jardine, Richard (Peer reviewed; Journal article, 2019)
      The installation and loading of steel piles driven in sands modifies both the piles' surface topography and the characteristics of the granular materials present adjacent to the pile shaft. Large-displacement ring shear ...
    • Characterisation of the Halden silt 

      Blaker, Øyvind; Carroll, Roselyn; L'Heureux, Jean-Sébastien (Chapter, 2016)
      NGI recently established a research site on a natural silt deposit to accommodate some of the challenges related to intermediate soils. This study briefly summarises the geological history and the preliminary geotechnical ...
    • Characterization and Engineering properties of Natural Soils used for Geotesting 

      L Heureux, Jean-Sebastien; Lunne, Tom (Peer reviewed; Journal article, 2019)
      Benchmarking is of significant importance in geological and geotechnical engineering, for testing and verifying innovative soil investigation methods and foundation solutions. This Special Issue aims to present detailed ...
    • Characterization and engineering properties of the NGTS Onsøy soft clay site 

      Gundersen, Aleksander; Hansen, Ragnhild; Lunne, Tom; L Heureux, Jean-Sebastien; Strandvik, Stein Oddvar (Peer reviewed; Journal article, 2019)
      In the 1960s, NGI investigated numerous potential research sites and established the first Onsøy soft clay site in 1968. In 2016, the NGTS project established five research sites, one of which is the NGTS Onsøy soft clay ...
    • Characterization of method Uncertainty for Axial Pile Design 

      Liu, Zhongqiang; Nadim, Farrokh; Lacasse, Suzanne (Chapter, 2018)
      The paper describes two approaches for deriving the mean, standard deviation and probability density function of the method uncertainty for an axial pile capacity calculation method. The focus of this paper is on estimating ...
    • Characterization of two sites for geotechnical testing in permafrost: Longyearbyen, Svalbard 

      Gilbert, Graham; Instanes, Arne; Sinitsyn, Anatoly; Aalberg, Arne (NGI-Rapport;20160154-07-R, Report, 2019-12-04)
      The mean annual air temperature in Svalbard has increased between 3 °C and 5 °C during the last 40 to 50 years. The continuous warming trend observed in Svalbard during the last 30 years has raised concerns about the ...
    • Characterization of two sites for geotechnical testing in permafrost: Longyearbyen, Svalbard 

      Gilbert, Graham Lewis; Instanes, Arne; Sinitsyn, Anatoly; Aalberg, Arne (Peer reviewed; Journal article, 2019)
      The mean annual air temperature in Svalbard has increased between 3 ℃ and 5 ℃ during the last 40 to 50 years. The continuous warming trend observed in Svalbard during the last 30 years has raised concerns about the stability ...
    • Clasificación probabilistica de umbrales de lluvia para predecir deslizamientos de tierra 

      Medina-Cetina, Zenon; Cepeda, Rivera Jose Mauricio (Journal article, 2012)
      Este artículo presenta la formulación probabilista de un modelo empírico para la determinación de deslizamientos de tierra producidos por el efecto de lluvia. El modelo de umbral propuesto I contiene un vector de parámetros, ...
    • Climate in Svalbard 2100 

      Bilt, Willem van der; Bakke, Jostein; Smedsrud, Lars H.; Sund, Monica; Schuler, Thomas; Westermann, Sebastian; Wong, Wai Kwok; Sandven, Stein; Simpson, Matthew James Ross; Skogen, Morten D.; Pavlova, O.; Ravndal, Ole; Risebrobakken, Bjørg; Saloranta, Tuomo; Mezghani, Abdelkader; Nilsen, F.; Nilsen, Jan Even Øie; Nilsen, Irene Brox; Kierulf, Halfdan; Kohler, Jack; Li, H.; Lutz, J; Melvold, Kjetil; Gjelten, Herdis Motrøen; Gundersen, Jeanette; Isaksen, Kjetil; Jaedicke, Christian; Dobler, Andreas; Engeset, Rune; Frauenfelder, Regula; Gerland, Sebastian; Christiansen, Hanne H; Børsheim, Knut Yngve; Breivik, Øyvind; Breili, Kristian; Borstad, Christopher Paul; Bogen, J.; Benestad, Rasmus; Beldring, S.; Andresen, J; Adakudlu, Muralidhar (Norwegian Centre for Climate Services Reports, Research report, 2019)
    • Closed-form equation for subsidence due to fluid production from a cylindrical confined aquifer 

      Jayeoba, Ayodeji; Mathias, Simon A.; Nielsen, Stefan; Vilarrasa, Victor; Bjørnarå, Tore Ingvald (Journal article; Peer reviewed, 2019)
      Ground surface subsidence due to groundwater production is a significant problem. Many attempts have been made to develop analytical models to forecast subsidence rates as a consequence of groundwater production. Previous ...
    • CO2 Field Lab at Svelvik Ridge: Site Suitability 

      Bakk, Audun; Girard, Jean-Francois; Lindeberg, Erik Gøsta Brun; Aker, Eyvind; Wertz, Frederic; Buddensiek, Maike-Liselotte; Barrio, Maria; Jones, David (Journal article, 2012)
      A field laboratory for monitoring CO2 migration has been established in the Holocene deposit of the Svelvik ridge, located at the sill of the Drammensfjord 50 km south of Oslo. Initial characterization of the site shows ...