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Acoustic and petrophysical properties of mechanically compacted overconsolidated sands: part 1 – experimental results
(Journal article; Peer reviewed, 2019)This paper part one is set out to lay primary observations of experimental compaction measurements to form the basis for rock physics modelling in paper part two. P‐ and S‐wave velocities and corresponding petrophysical ... -
Acoustic characterization of an artificial CO2 seep using split-beam echo sounders
(Peer reviewed; Journal article, 2019)Geological carbon storage (GCS) has emerged as a promising method for reducing greenhouse gas emissions and achieving international climate goals. Currently, sub-seafloor GCS sites sequester about 1.8 MtCO2/yr. Additional ... -
Acoustic sensor to measure snowdrift and wind velocity for avalanche forecasting
(NGI Publication;203, Chapter, 1998)A new mathematical model of slushflow dynamics is developed. A slushflow is treated as a two-layer flow. The lower layer consists of pure liquid phase (water) and the upper layer is a floating water saturated snow (slush). ... -
Advancing the Use of Passive Sampling in Risk Assessment and Management of Sediments Contaminated with Hydrophobic Organic Chemicals: Results of an International Ex Situ Passive Sampling Interlaboratory Comparison Michiel T. O. Jonker*† , Stephan A. van der He
(Peer reviewed; Journal article, 2018)This work presents the results of an international interlaboratory comparison on ex situ passive sampling in sediments. The main objectives were to map the state of the science in passively sampling sediments, identify ... -
Advantages and limitation of using 2-D FE modelling for assessment of effect of mitigation measures for railway vibrations
(Peer reviewed; Journal article, 2019)This paper addresses mitigation measures against railway vibrations in soft soils by use of FE calculations. In order for calculation models to be used as design tools, it is essential that they are relatively easy to set ... -
AEM in norway: A review of the coverage, applications and the state of technology
(Peer reviewed; Journal article, 2021) -
Algorithms for intelligent prediction of landslide displacements
(Peer reviewed; Journal article, 2020)Landslides represent major threats to life and property in many areas of the world, such as the landslides in the Three Gorges Dam area in mainland China. To better prepare for landslides in this area, we explored how ... -
All-weather avalanche activity monitoring from space?
(The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2014)Information on avalanche activity or on non-activity on local and regional scale is of great value for avalanche warning services, traffic authorities and experts responsible for safety in communities or ski resorts. In ... -
An analytical plane-strain solution for surface uplift due to pressurized reservoirs
(Peer reviewed; Journal article, 2018)In this paper, we present an analytical plane strain solution for surface uplift above pressurized reservoirs. The solution is based on a Fourier representation of the reservoir pressure. The plane strain model is developed ... -
An Analytical Solution for Pressure-Induced Deformation of Anisotropic Multilayered Subsurface
(Peer reviewed; Journal article, 2021) -
An anisotropic elastoplastic model for soft clays based on logarithmic contractancy
(Journal article, 2015)A new constitutive model for soft structured clays is developed based on an existing model called S-CLAY1S, which is a Cam clay type model that accounts for anisotropy and destructuration. The new model (E-SCLAY1S) uses ... -
An anisotropic shear strength model for cyclic accumulated plastic strain of overconsolidated clay
(Journal article, 2014)Many geotechnical problems involve calculation of the permanent deformation of overconsolidated clay under undrained cyclic loading. There are many existing methods in the literature which have been made for predicting ... -
An Evaluation of the Applicability of Current Ground-Motion Models to the South and Central American Subduction Zones
(Journal article; Peer reviewed, 2012)The applicability of existing ground‐motion prediction equations (GMPEs) for subduction‐zone earthquakes is an important issue to address in the assessment of the seismic hazard affecting the Peru–Chile and Central American ... -
Analysis of an artificially triggered avalanche at the nepheline syenite mine on Stjernøya, Alta, Northern Norway
(The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2014)Since 1961, a Nepheline Syenite mine is operated on the island of Stjernøya in the Altafjord, Northern Norway. The facilities are located in Lillebukt, on the southern side of the island. Above the facilities, the Nabbaren ... -
Analysis of avalanche measurements out of the runout area of NGI's full-scale test-site Ryggfonn
(Journal article, 2009)The paper summarizes measurements and observations of dry-snow avalanches at the Ryggfonn test-site with respect to their behavior in the runout area. Measurements of front velocities and retarding accelerations are presented ... -
Analysis of water ingress, grouting effort, and pore pressure reduction caused by hard rock tunnels in the Oslo region
(Peer reviewed; Journal article, 2022) -
Analytical solution for tunnelling-induced response of an overlying pipeline considering gap formation
(Peer reviewed; Journal article, 2023)Soil-pipeline separation due to tunnelling has been certainly substantiated in previous model tests. However, this phenomenon has seldom been considered in current analytical solutions. This study formulates a tensionless ...