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  • 151.
    Falemo, Stefan
    et al.
    Statens geotekniska institut.
    Andersson-Sköld, Yvonne
    Statens geotekniska institut.
    Tremblay, Marius
    Statens geotekniska institut.
    Landslide consequence analysis - valuing consequences and mapping expected losses in the Göta river valley2012Ingår i: Proceedings of the 16th Nordic Geotechnical Meeting, NGM 2012, 16, Copenhagen, 9-12 May, 2012, Copenhagen: Dansk Geoteknisk Forening, DGF , 2012, Vol. 2, s. 659-666Konferensbidrag (Refereegranskat)
    Abstract [en]

    Landslide risks are expected to increase with climate change in large parts of Sweden due to increased annual precipitation, more intense precipitation and increased flows combined with drier summers. In response to this, on commission of the Ministry of Environment, the Swedish Geotechnical Institute is at present performing a risk analysis of the most prominent landslide risk area in Sweden: the Göta river valley. Elements at risk include human life, transport (shipping, road and rail road) and other infrastructure, residential and other properties, commercial and industrial activities, contaminated land and intangibles such as biodiversity. The Göta river valley landslide risk analysis is performed as two parallel parts: stability / probability analysis and consequence analysis. Maps of geographically distributed landslide probabilities and consequences will be produced and merged into a risk map with three classes using a risk matrix. Focusing on the consequences of landslides this paper aims to describe the methodology developed for this regional consequence analysis and to visualize some results. Expected losses following a landslide are estimated based on the exposure, vulnerability and monetary value of each element at risk. GIS aids to the consequence analysis in a number of ways; in using existing spatial databases to quantify expected consequences, calculating expected monetary losses and visualizing results. The resulting risk map will be used in the surveillance of the landslide safety in the Göta river valley. Results can also provide municipal land use planners with a synoptic view of landslide risks in the valley. The consequence analysis methodology developed within this project can be applied from local to national level and for several types of natural hazards such as landslides, erosion and flooding.

  • 152. Fallsvik, Jan
    GIS - översiktlig kartering av stabilitetsförhållandena utmed Eskilstunaån - Demonstrationsprojekt2005Rapport (Övrigt vetenskapligt)
    Abstract [sv]

    (1) Översiktlig kartering av stabilitetsförhållandena; (2) GIS-baserad stabilietskartering utförd i Eskilstuna; (3) Översvämningars inverkan på stabilitetsförhållandena

  • 153. Fallsvik, Jan
    GIS vid geokalkyl i tidiga planskeden1993Rapport (Övrigt vetenskapligt)
    Abstract [sv]

    (1) Geokalkyl med GIS-stöd; (2) GIS-stödd geokalkyl i Söderköping; (3) Utfört arbete i ARC/INFO; (4) Demonstration av GIS-baserad förenklad schablonmetod

  • 154. Fallsvik, Jan
    LIDAR data for slope stability analyses - Deliverable 62007Rapport (Övrigt vetenskapligt)
    Abstract [en]

    (1) Swedish Guidelines for stability investigations; (2) The test site; (3) The geometry of Section 5; (4) Inventory of human activities and other information on the terrain; (5) Analysis of the input data; (6) Stability calculations; (7) Results of the stability calculcations; Appendices: (A) Brief description on the regional geological development and its (B) Definitions in line with the Swedish Guidelines; (C) Laboratory investigations; (D) Analysis of shear strength data; (E) Sections of the performed stability calculations

  • 155. Fallsvik, Jan
    Recommendations for planning, surveillance, inspection with LS DTM. Usefulness of LS DTM in landslide hazard mapping and slope management - Deliverable 82007Rapport (Övrigt vetenskapligt)
    Abstract [en]

    (1) Work carried out on topographical data in the LESSLOSS project; (2) Comparison with existing methodology; (3) Pros and cons with new and existing methods; (4) Using LS DTM – Recommendations; Appendix: (A) The TopEye MK II - LIDAR system with integrated digital camera

  • 156. Fallsvik, Jan
    Utveckling av beräkningshjälpmedel för geokalkyl. Etapp 11991Rapport (Övrigt vetenskapligt)
  • 157. Fallsvik, Jan
    Zonation and landslide hazard by means of LS DTM - Deliverable 72007Rapport (Övrigt vetenskapligt)
    Abstract [en]

    (1) Early stage landslide and erosion hazard assessment in slopes in clay and silt - an existing method for a national survey in Sweden; (2) Prototype for national digital map data base on landslide prerequisites in clay and silt areas in Sweden; (3) LASER based scanning of the topography; (4) GIS-algorithm for construction of stability zones; (5) The Eskilstuna River pre-study; (6) The Lilla Edet test site; (7) Evaluation of LS DTM with respect to landslide information; (8) Evaluation of LS DTM with respect to analysis of field check; (9) Advantages and possibilities of the studies methodology; Appendices: (A) Swedish overview landslide hazard mapping; (B) Bollebygd municipality - Example of manually performed stability; (C) Production of the SGU quaternary soil maps; (D) Bathymetrical survey of the Göta Älv River; (E) The further investigation stages 2 and 3 in the Swedish programme for stability investigations; (F) Description of the region around Lilla Edet and the test area

  • 158. Fallsvik, Jan
    et al.
    Haglund, Håkan
    Lindmark, Alf
    Jönsson, Roger
    Läggning av gasledning med plöjteknik vid Glostorp, Malmö - Uppföljning och rapportering1991Rapport (Övrigt vetenskapligt)
  • 159. Fallsvik, Jan
    et al.
    Hammarstedt, Jörgen
    Lindmark, Alf
    Rörplöjningsteknik för gasledningar. Förstudie1990Rapport (Övrigt vetenskapligt)
  • 160. Fallsvik, Jan
    et al.
    Hågeryd, Ann-Christine
    Lind, Bo
    Alexandersson, Hans
    Edsgård, Susanne
    Löfling, Per
    Nordlander, Håkan
    Thunholm, Bo
    Översiktlig bedömning av jordrörelser vid förändrat klimat. Klimatförändringens inverkan i Sverige2007Rapport (Övrigt vetenskapligt)
    Abstract [sv]

    (1) Klimatförändringen; (2) Jordrörelser vid dagens klimat - erosion, skred och ras; (3) Klimatförändringens inverkan på jordrörelser - erosion, skred och ras

  • 161. Fallsvik, Jan
    et al.
    Johansson, Thomas
    Lindmark, Alf
    Rörplöjningsteknik för VA-ledningar. En marknadsanalys1991Rapport (Övrigt vetenskapligt)
  • 162. Fallsvik, Jan
    et al.
    Olsson, Connie
    Tätortsgrundläggning - sättningsuppföljning av byggnader, omgivningspåverkan. Etapp 1 - förstudie1993Rapport (Övrigt vetenskapligt)
  • 163.
    Fallsvik, Jan
    et al.
    Statens geotekniska institut.
    Rydell, Bengt
    Statens geotekniska institut.
    Hågeryd, Ann-Christine
    Statens geotekniska institut.
    Blied, Linda
    Statens geotekniska institut.
    Falemo, Stefan
    Statens geotekniska institut.
    Natural disasters in a changed climate - methodology for planning and adaption to climate2012Ingår i: Proceedings of the 16th Nordic Geotechnical Meeting, NGM 2012, 16, Copenhagen, 9-12 May, 2012, Copenhagen: Dansk Geoteknisk Forening, DGF , 2012, Vol. 2, s. 667-674Konferensbidrag (Refereegranskat)
    Abstract [en]

    The Swedish Geotechnical Institute (SGI) has developed a model to be used as a basis for planning long-term sustainable solutions considering the risks for erosion, flooding, landslides and debris flows, regarding the climate of both toady and tomorrow. This planning and decision making model is based on an integrated assessment of both climatic conditions and technical, environmental and socio-economic conditions, including geotechnical risks. The model can be used as a basis for spatial planning, planning of adaptation measures for existing and new urban areas, coastal areas, and ski resort areas, as well as planning of infrastructure and land improvement measures. The model takes into account national, regional and local conditions. Thus the model can be used for the adaptation of the society to climate change and to manage the risks of natural disasters due to climate change for both the existing built-up areas and new development areas, including its associated infrastructure. Prerequisites for natural disasters, specifically erosion, landslides, debris flows and flooding, are inventoried by describing the natural topographical, geotechnical and hydrological conditions and the future climate change. Impact on humans, property and nature of potential natural hazards is identified and weighed together with the prerequisites of climate change. Optional measures are recognized and valued from an economic and environmental point of view. This provides a transparent basis for decisions in the planning or adaptation needs for existing development.

  • 164.
    Fallsvik, Jan
    et al.
    Statens geotekniska institut.
    Svahn, Victoria
    Statens geotekniska institut.
    Falemo, Stefan
    Statens geotekniska institut.
    Lundström, Karin
    Statens geotekniska institut.
    Cost benefit analysis of preventive measures against landslides due to climate change2011Ingår i: Geotechnics of Hard Soils - Weak Rocks: Proceedings of the 15th European Conference on Soil Mechanics and Geotechnical Engineering, Athens, 12-15 September, 2011 / [ed] Anagnostopoulos, A, Pachakis, M, Tsatsanifos, C, Athens: IOS Press, 2011, Vol. 3, s. 1337-1342Konferensbidrag (Refereegranskat)
    Abstract [en]

    With regard to the impacts of climate change, cost benefit analysis was conducted for the performance of preventive measures against landslides in three urbanized slopes adjacent to rivers in Sweden. A methodology is described, which can be applied for stability investigations, highlighting the factors of climate change as well as landslide probability and consequences. The consequences are weighted to the costs of performing preventive measures reducing the probability of landslides. In calculating landslide risks, both the probability and the consequences of the landslides were included.

  • 165. Fallsvik, Jan
    et al.
    Svahn, Victoria
    Falemo, Stefan
    Lundström, Karin
    Kostnadsnyttoanalys för förebyggande åtgärder mot skred och ras till följd av förändrat klimat2010Rapport (Övrigt vetenskapligt)
    Abstract [sv]

    (1) Riskbegrepp; (2) Riskvärdering; (3) Fallstudier; (4) Högshallsområdet, Partille kommun; (5) Kvarteret Orren, Lidköpings kommun; (6) Kanders gata, Årby, Borlänge kommun; Bilagor: (1) Odränerad och dränerad skjuvhållfasthet; (2) Anvisningar för släntstabilitetsutredningar; (3) Genomgång lämpliga stabilitetsutredningar; (4) Högshallsvägen, Partille - Effekten av varierande nederbörd på portrycken; (5) Konsekvensberäkning i fallstudierna

  • 166. Fallsvik, Jan
    et al.
    Viberg, Leif
    GIS för översiktlig kartering av stabilitetsförhållanden1999Rapport (Övrigt vetenskapligt)
    Abstract [sv]

    (1) Metodik; (2) Tillämpnings- och praktikfall; (3) Uppbyggnad av databasen; (4) Erfarenheter och slutsatser; (5) Förslag till fortsatt utvecklingsarbete; Bilagor: (1) Stabilitetszoner; (2) GIS-baserad stabilitetskartering i Sollefteå och Lerums kommuner

  • 167. Fellenius, Bengt H
    Negative skin friction on long piles driven in clay1971Rapport (Övrigt vetenskapligt)
    Abstract [en]

    (I) Results of a full scale investigation on instrumented piles; (II) General views and design recommendation

  • 168. Fjelkner, Gunnar
    Stålpålars bärförmåga. Resultat av fältförsök med lätta slagdon1971Rapport (Övrigt vetenskapligt)
  • 169. Fjelkner, Gunnar
    et al.
    Broms, Bengt
    Damping of stress waves in piles during driving. Results from field tests1972Rapport (Övrigt vetenskapligt)
  • 170. Flodin, Nils
    Anvisningar för Geotekniska institutets fältundersökningar. Del 1: Undersökningarnas planläggning och omfattning. Sonderingsmetoder. Vingborrning. Provtagning. Uppgörande av borrningsritningar1961Rapport (Övrigt vetenskapligt)
    Abstract [sv]

    (1) Planläggning och omfattning av fältundersökningarna; (2) Grundundersökningsmetoder; (3) Upprättande av borrningsritningar

  • 171. Flyhammar, Peter
    Hantering av förorenade jord- och muddringsmassor. En förstudie2017Rapport (Övrigt vetenskapligt)
    Abstract [sv]

    Syftet med denna förstudie är att beskriva prövningsprocessen med tillhörande regelverk för hantering av förorenade jord- och muddringsmassor och att identifiera särskilda behov av förtydliganden och vägledning i denna process. Rapporten innehåller en översiktlig be-skrivning av hur ärenden som berör hantering och behandling av förorenade jord- och muddringsmassor vanligtvis handläggs. I förstudien återges även översiktligt dagens praxis, nationell och regional vägledning med tillhörande rekommendationer och råd. Svårigheter och problem vid hantering av förorenade massor utifrån länsstyrelsernas och svenska avfallsanläggningars synvinkel har dessutom belysts i två delstudier. Förstudien kan ligga till grund för framtagning av vägledning och rekommendationer för hur förorenade jord- och muddringsmassor kan hanteras på ett likvärdigt och miljömässigt hållbart sätt. Resultat från arbetet kan också användas som underlag för revideringar av gällande lagstiftning.

  • 172. Franzén, Gunilla
    et al.
    Bergdahl, Ulf
    Statens geotekniska institut.
    Hansbo, Sven
    Grävare, Carl-John
    Garin, Håkan
    Norden inför Eurokod 72009Ingår i: Bygg & Teknik, ISSN 0281-658X, Vol. 101, nr 1, s. 22-23Artikel i tidskrift (Övrigt vetenskapligt)
    Abstract [sv]

    (1) Nationella säkerhetsnivåer; (2) Dimensioneringssätt; (3) Plattor; (4) Stödkonstruktioner; (5) Slänter och bankar; (6) Är det rimligt med en skillnad?; (7) Hur ser det ut i framtiden?

  • 173. Frogner Kockum, P
    et al.
    Göransson, G
    Haeger-Eugensson, M
    Climate impact on contaminant dispersion in the river basin of Göta Älv, Sweden2016Rapport (Övrigt vetenskapligt)
    Abstract [en]

    This study is the result of the DiPol project (Impact of climate change on the quality of urban and coastal waters) that was conducted 2009-2012 as part of the EU Interreg IVB North Sea Program. The overall aim with DiPol was to gather knowledge regarding how climate changes affect water quality. Additionally, to communicate such knowledge and increase awareness about climate changes among decision makers to be able to counteract the effects of climate changes both on the local and regional levels as well as to involve the general public in this work. Four study sites were choosen in Sweden, Norway, Denmark and Germany. This report covers the results from the Swedish study site; the river basin of Göta Älv. Based on samples from wet and dry periods as well as spring flood events, this study presents a possible relation between a short term increase in precipitation and enhanced contaminant transport in urban water courses of the Göta Älv river basin in Sweden. Elevated metal and PAH concentrations (polycyclic aromatic hydrocarbons) in the studied river system was linked to increased surface runoffs and shallow groundwater flows from urban areas, rather than re-suspension of river sediments. Based on future prediction of precipitation, also the climate change impact on ground water levels and river discharge are shown together with other consequences such as contaminant transport in rivers of this region. This study demonstrates an enhanced contaminant transport from urban areas to the river system due to increased precipitation and ground water levels.

  • 174.
    Frogner Kockum, Paul
    et al.
    Statens geotekniska institut.
    Lindqvist, Jan-Erik
    Loorents, Karl-Johan
    Arm, Maria
    Statens geotekniska institut.
    Microstructure of aged MSWI bottom ash in road construction2012Ingår i: WASCON 2012 - Towards Effective, Durable and Sustainable Production and Use of Alternative Materials in Construction: Proceedings of the 8th International Conference on Sustainable Management of Waste and Recycled Materials in Construction, Gothenburg, Sweden, 30 May - June 1, 2012 / [ed] Arm, M, Vandecasteele, C, Heynen, J, Suer, P, Lind, B, Linköping: ISCOWA , 2012, s. 1-5Konferensbidrag (Refereegranskat)
    Abstract [en]

    Focuses on the chemical and structural long-term performance of aged MSWI bottom ash used as a reinforcement layer in a 60metre-long stretch of a test road. The bottom ash was stored in open air for some time before use. Sampling was performed eight years after construction. Epoxy-impregnated polished slabs from undisturbed samples representing cross-sections through the sub-base layer were used for a microtextural and chemical characterization by SEM/EDS and XRPD. No cracks that implied movement or rotation of particles in the road construction or disturbance due to the sampling process were found. This made it possible to study the chemical and structural processes on a micro-scale. The SEM/EDS analysis showed that most particles had reacted to some extent but were not disturbed by movements in the road construction or sampling. It is concluded that the microstructural stability of the studied MSWI bottom ash is high.

  • 175.
    Frogner-Kockum, Paul
    et al.
    Statens geotekniska institut.
    Göransson, Peter
    Åslund, Henrik
    Ländell, Märta
    Statens geotekniska institut.
    Stevens, Rodney
    Tengberg, Anders
    Göransson, Gunnel
    Statens geotekniska institut.
    Ohlsson, Yvonne
    Statens geotekniska institut.
    Metal contaminant fluxes across the sediment water interface2016Ingår i: Marine Pollution Bulletin, ISSN 0025-326X, E-ISSN 1879-3363, Vol. 111, nr 1-2, s. 321-329Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    To date, most estimates of contaminant fluxes across the sediment/water interface in risk assessments have been done using diffusive flux models. However, the reliability of these is limited as the overall flux from the sediment may have contributions caused by advection and bioturbation. We found through a comparison of modelled fluxes versus measured fluxes, that the methods Benthic Flux Chamber and surface leaching tests in a risk assessment context showed similar magnitude while calculated fluxes deviated at least by a factor of 100 from measured fluxes. This may be explained by the flux contribution in connection with bioturbation. The chamber- measured fluxes of copper were low compared to those of zinc and cobalt, but this is consistent with leaching tests that indicated copper to be more strongly bound. Risk assessments based on total concentrations may be misleading.

  • 176. Fällman, Ann-Marie
    Summary of different classification systems for wastes1992Rapport (Övrigt vetenskapligt)
    Abstract [en]

    (1) Existing or proposed classification systems; (2) Test methods for evaluating a material; (3) Restrictions on utilization as building material

  • 177. Fällman, Ann-Marie
    et al.
    Holby, Ola
    Lundberg, Karin
    Kolloiders betydelse för hållfasthet och föroreningstransport i jord2001Rapport (Övrigt vetenskapligt)
    Abstract [sv]

    Syftet med studien var att finna belägg för inverkan av porvattenkemin på hållfasthet i lera och för inverkan av kolloider på föroreningstransporten från restprodukter. Studien har omfattat dels en litteraturstudie, dels experimentella försök. Den experimentella delen av studien omfattade kemisk inverkan på flockulering i suspensioner av lera, inverkan av porvattenkemin på hållfasthet i lera, samt generering av kolloider vid laktester på slagg.

  • 178. Gabrielsson, Anna
    Försöksfält för värmelagring. Driftsrapport 4 1992-02-03--1996-12-311997Rapport (Övrigt vetenskapligt)
  • 179. Gabrielsson, Anna
    Förutsättningar för förbelastning av värmelager i lera2000Rapport (Övrigt vetenskapligt)
    Abstract [sv]

    (1) Syfte och genomförande; (2) Förutsättningar för sättningsberäkning; (3) Beräknad sättningsutveckling; (4) Stegvisa ödometerförsök; (5) Försök med förbelastning i fält; Bilagor: (1) Geotekniska undersökningsresultat; (2) Indata till sättningsberäkning med Embankco; (3) Uppskattning av kostnader för fältförsök

  • 180. Gabrielsson, Anna
    Mätning med termisk sond. Värmeledningsförmåga hos lera vid olika mätförhållanden och temperaturer1995Rapport (Övrigt vetenskapligt)
    Abstract [sv]

    (1) Teori bakom sondmetoden; (2) Mätutrustning; (3) Mät- och undersökningsprogram; (4) Resultat; (5) Diskussion och jämförelser; (6) Praktiska erfarenheter med förslag till förbättringar

  • 181. Gabrielsson, Anna
    Solvärmesystem med säsongslager. En simulerings- och kostnadsstudie1997Rapport (Övrigt vetenskapligt)
    Abstract [sv]

    (1) Genomförande av projektet; (2) Resultat av simuleringar; (3) Känslighetsanalys; (4) Resultat av känslighetsanalys; (5) Spillvärme och säsongsvärmelager i lera; Bilagor: (1) Indata vid simuleringar och utskrift av GHE-program; (2) Simuleringsresultat för de mest lönsamma systemlösningarna

  • 182. Gabrielsson, Anna
    et al.
    Bergdahl, Ulf
    Lehtmets, Marti
    Gropmagasin för värmelagring. En förstudie1993Rapport (Övrigt vetenskapligt)
    Abstract [sv]

    (1) Erfarenheter från byggda groplager; (2) Sammanfattning av vunna erfarenheter; (3) Alternativa groplagerkoncept; (4) Teknisk och ekonomisk jämförelse

  • 183. Gabrielsson, Anna
    et al.
    Bergdahl, Ulf
    Lehtmets, Marti
    Moritz, Lovisa
    Försöksfält för värmelagring. Driftsrapport 1 1992-02-03--1993-01-291993Rapport (Övrigt vetenskapligt)
    Abstract [sv]

    (1) Försöksfält sammanfattande beskrivning; (2) Driftsstrategier; (3) Mät- och undersökningsprogram; (4) Energitekniska resultat; (5) Geotekniska resultat; (6) Energiteknisk utvärdering; (7) Geoteknisk utvärdering; (8) Praktiska erfarenheter; (9) Kostnader; (10) Framtida verksamhet

  • 184. Gabrielsson, Anna
    et al.
    Bergdahl, Ulf
    Lehtmets, Marti
    Moritz, Lovisa
    Försöksfält för värmelagring. Driftsrapport 2 1992-02-03--1994-01-171995Rapport (Övrigt vetenskapligt)
    Abstract [sv]

    (1) Försöksfält kort beskrivning; (2) Driftsstrategier; (3) Mät- och undersökningsprogram; (4) Energitekniska resultat; (5) Geotekniska resultat; (6) Energiteknisk utvärdering; (7) Geoteknisk utvärdering; (8) Praktiska erfarenheter; (9) Kostnader; (10) Framtida verksamhet

  • 185. Gabrielsson, Anna
    et al.
    Bergdahl, Ulf
    Lehtmets, Marti
    Moritz, Lovisa
    Försöksfält för värmelagring. Driftsrapport 3 1992-02-03--1994-12-311995Rapport (Övrigt vetenskapligt)
  • 186. Gabrielsson, Anna
    et al.
    Bergdahl, Ulf
    Moritz, Lovisa
    Försöksfält för värmelagring i lera (max 90 C). Utvärdering av geotekniska och värmetekniska resultat från driften 1992-19992000Rapport (Övrigt vetenskapligt)
    Abstract [sv]

    (1) Syfte och bakgrund; (2) Försöksfältet kort beskrivning; (3) Driftsstrategier; (4) Tillförd energi; (5) Geotekniska resultat; (6) Värmetekniska resultat; (7) Utvärdering; (8) Praktiska erfarenheter från driften; (9) Slutsatser; (10) Rekommendationer; (11) Förslag till fortsatt FoU; Bilagor: (1) PEX produktblad; (2) Planritningar: Instrumentering av Fält 1 och Fält 2; (3) Korrosionsutredning; (4) Statuskontroll av värmeväxlare; (5) Rapport avseende felsökning i lagerkretsen hösten 1998

  • 187. Gabrielsson, Anna
    et al.
    Lehtmets, Marti
    Solvärmesystem i Finspång - simuleringsresultat1995Rapport (Övrigt vetenskapligt)
  • 188. Gabrielsson, Anna
    et al.
    Lehtmets, Marti
    Termisk sond. Utrustning för mätning av värmekonduktivitet1992Rapport (Övrigt vetenskapligt)
  • 189. Gabrielsson, Anna
    et al.
    Lehtmets, Marti
    Moritz, Lovisa
    Bergdahl, Ulf
    Heat storage in soft clay. Field tests with heating (70 C) and freezing of the soil1997Rapport (Övrigt vetenskapligt)
    Abstract [en]

    (1) Objectives and methods; Theoretical outline; (2) Design and construction of the test field; (3) Instrumentation and measuring methods; (4) Research results and evaluation; Operating results; (5) Conclusions, recommendations and future plans

  • 190. Granstrand, Nils
    et al.
    Blixt, Bo
    Holmgren, Lennart
    Lindmark, Alf
    Läggning av gasledning med direktläggningsteknik vid Lillhagen i Göteborg. Uppföljning och rapportering1991Rapport (Övrigt vetenskapligt)
  • 191. Gustafsson, Annika
    et al.
    Huldt, Kristina
    Grundvattenplanering. Styrning av grundvattennivåer i tätort. Delrapport 3: Grundvatten i lagstiftningen1991Rapport (Övrigt vetenskapligt)
    Abstract [sv]

    (I) Lagstiftning: Lag om hushållning med naturresurser mm (NRL), Planläggning, Tillstånd, Krav på byggnader och bygglovsprövningen enl PBL, Vattenlagen, Miljöskyddslagen och miljöskadelagen, Hälsoskyddslagen, Tillsyn och kontroll av byggnadsarbete, Sanktioner, Påföljder och ingripanden vid byggande i strid mot PBL samt enligt övrig lagstiftning. (II) Ansvar: Ansvar för skador med anknytning till grundvatten, Skadeståndsansvar vid myndighetsutövning.

  • 192. Gwizdala, Kazimierz
    Large diameter bored piles in non-cohesive soils. Determination of the bearing capacity and settlement from results of static penetration tests (CPT) and standard penetration test (SPT)1984Rapport (Övrigt vetenskapligt)
  • 193.
    Göransson, Gunnel
    et al.
    Statens geotekniska institut.
    Bendz, David
    Statens geotekniska institut.
    Larson, P Magnus
    Combining landslide and contaminant risk: a preliminary assessment2009Ingår i: Journal of Soils and Sediments, ISSN 1439-0108, E-ISSN 1614-7480, Vol. 9, nr 1, s. 33-45Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The aim of this paper is to highlight a not yet recognized hazard for mass failure (landslides) of contaminated soils into rivers and to provide an understanding of important interactions of such events. A first effort to investigate the problem is made focusing on the south eastern part of the Göta Älv river valley, in Sweden, by combining geographical information on potentially contaminated sites with slope stability levels on maps. The objectives of this study were to: (1) Review current Swedish risk assessment methodologies for contaminated areas and landslides, and analyze their capability to quantify the risk of contaminated areas being subject to landslides. (2) Investigate the presence of contaminated areas at landslide risk along the Göta Älv river valley. (3) Provide an overview of the national methods for landslide risk analysis and for environmental risk classification, followed by a comparison between the methods and the results from the superposition of the two methods for the study site. (4) Make a first attempt to conceptualize the release and transport mechanisms.

  • 194.
    Göransson, Gunnel
    et al.
    Statens geotekniska institut.
    Edebalk, Paul
    Statens geotekniska institut.
    Hedfors, Jim
    Statens geotekniska institut.
    Carling, Maria
    Statens geotekniska institut.
    Odén, Karin
    Statens geotekniska institut.
    Branzén, Helena
    Statens geotekniska institut.
    Stark, Mikael
    Statens geotekniska institut.
    Multi-hazard: Contaminated land vulnerable to natural hazards and effects of climate change2016Ingår i: Proceedings of the 17th Nordic Geotechnical Meeting, NGM 2016, Reykjavik, Iceland, 25-28 May, 2016, Reykjavik: Icelandic Geotechnical Society , 2016, s. 1127-1136Konferensbidrag (Refereegranskat)
    Abstract [en]

    Most landslides are triggered by precipitation, river erosion, or human impact, or both. Regions experiencing an increase in precipitation from climate change may be at elevated risk for increased landslide frequency. The Swedish Geotechnical Institute is developing a methodology for landslide risk analysis and mapping along Swedish rivers and with the consideration of climate change effects. River geometry is dynamic and is under constant change, however most slope stability analyses are made under the assumption that the condition is static. No consideration is taken to future changes in slope geometry from river erosion. But, is it even possible to assess how river cross sections will change in future along with the effect of increased river flows due to the climate change? There are yet no models that can combine soil mechanics with hydrodynamic processes. The Swedish Geotechnical Institute is developing a methodology to calculate possible future changes in river cross sections and with respect to climate change effects The approach is based on various measurements and analyses like bathymetric surveys, sediment characterization, hydrodynamic modelling of river flows, analysis of shoreline displacement with time by using aerial photos, and comparison between old and new cross sections. Erosive river flows are assessed and the duration of such flows in future (year 2100) is estimated based on existing climate analyses. Comprehensive calculation of river bed erosion is made in GIS, and is combined with bank erosion calculation in chosen cross sections. Calculation of slope stability and the probability of slope failure are then done for several cross sections, both for today's geometry and for an expected geometry by year 2100. The approach was first developed in the landslide risk analysis for Göta Älv river, Sweden, and further developed and simplified for Norsälven River, Sweden. Currently, a landslide risk analysis for Säveån river has just been started.

  • 195.
    Göransson, Gunnel
    et al.
    Statens geotekniska institut.
    Folkesson, Malin
    Skred i förorenade områden - i dagens förändrade klimat2010Ingår i: Recycling & Miljöteknik, ISSN 2000-6284, nr 10, s. 27-27Artikel i tidskrift (Övrigt vetenskapligt)
    Abstract [sv]

    Erosion, underminering och skred i förorenade massor kan sprida skadliga ämnen till vattendrag och sjöar. Kunskapen om de bakomliggande aktiva processerna till varför det sker är bristfällig, men redan nästa år vet vi förhoppningsvis mer. Då avslutas ett doktorandprojekt inom ämnesområdet.

  • 196. Göransson, Gunnel
    et al.
    Hedfors, Jim
    Ndayikengurukiye, Godefroid
    Blied, Linda
    Odén, Karin
    Skredrisker i ett förändrat klimat - Norsälven. Framtida erosion i Norsälven med hänsyn till klimatförändring. Del 3: Fördjupningsbilaga2015Rapport (Övrigt vetenskapligt)
    Abstract [sv]

    Denna rapport beskriver metodik och resultat av erosionsberäkningar i Norsälven, sträckan Fryken-Vänern, med hänsyn till möjliga effekter av klimatförändring fram till år 2100. Metodiken är en modifiering av den metodik som togs fram inom Göta älvutredningen. Arbetet har utförts som ett deluppdrag inom uppdraget "Skredrisker i ett förändrat klimat - Norsälven". Syftet med erosionsuppdraget har varit att beräkna framtida erosion i Norsälven med hänsyn till klimatförändring och att leverera underlag till det deluppdrag som ansvarar för att beräkna skredssannolikhet med hänsyn till klimatförändring. Beräkningsunderlaget har baserats på geologisk beskrivning av området, flödesdata, bottenundersökningar, hydrodynamisk modellering, tidigare lodade sektioner, analys av strandförskjutning samt klimatanalys för Värmland.

  • 197.
    Göransson, Gunnel
    et al.
    Statens geotekniska institut.
    Hedfors, Jim
    Statens geotekniska institut.
    Ndayikengurukiye, Godefroid
    Statens geotekniska institut.
    Odén, Karin
    Statens geotekniska institut.
    Climate change induced river erosion as a trigger for landslide2016Ingår i: Proceedings of the 17th Nordic Geotechnical Meeting, NGM 2016, Reykjavik, Iceland, 25-28 May, 2016, Reykjavik: Icelandic Geotechnical Society , 2016, s. 1183-1192Konferensbidrag (Refereegranskat)
    Abstract [en]

    Most landslides are triggered by precipitation, river erosion, or human impact, or both. Regions experiencing an increase in precipitation from climate change may be at elevated risk for increased landslide frequency. The Swedish Geotechnical Institute is developing a methodology for landslide risk analysis and mapping along Swedish rivers and with the consideration of climate change effects. River geometry is dynamic and is under constant change, however most slope stability analyses are made under the assumption that the condition is static. No consideration is taken to future changes in slope geometry from river erosion. But, is it even possible to assess how river cross sections will change in future along with the effect of increased river flows due to the climate change? There are yet no models that can combine soil mechanics with hydrodynamic processes. The Swedish Geotechnical Institute is developing a methodology to calculate possible future changes in river cross sections and with respect to climate change effects The approach is based on various measurements and analyses like bathymetric surveys, sediment characterization, hydrodynamic modelling of river flows, analysis of shoreline displacement with time by using aerial photos, and comparison between old and new cross sections. Erosive river flows are assessed and the duration of such flows in future (year 2100) is estimated based on existing climate analyses. Comprehensive calculation of river bed erosion is made in GIS, and is combined with bank erosion calculation in chosen cross sections. Calculation of slope stability and the probability of slope failure are then done for several cross sections, both for today´s geometry and for an expected geometry by year 2100. The approach was first developed in the landslide risk analysis for Göta Älv river, Sweden, and further developed and simplified for Norsälven River, Sweden. Currently, a landslide risk analysis for Säveån river has just been started.

  • 198.
    Göransson, Gunnel
    et al.
    Statens geotekniska institut.
    Larson, Magnus
    Althage, Jonas
    Ship-generated waves and induced turbidity in the Göta Älv River in Sweden2014Ingår i: Journal of waterway, port, coastal, and ocean engineering, ISSN 0733-950X, E-ISSN 1943-5460, Vol. 140, nr 3, artikel-id 04014004Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Ship-generated waves were investigated in the Göta Älv river, which is a major waterway on the Swedish west coast between the sea and Lake Vänern. Ships with a typical size of 85x15x5 m (lengthxwidthxdraft) travel at speeds between 5 and 10 knots, generating waves that cause sediment transport and erosion along the river bed and banks. Field measurements of the wave properties and turbidity were carried out during 17 ship passages, and comparisons were made with the most commonly used formulas for predicting ship waves. The formula proposed by the Permanent International Association of Navigation Congresses yielded the overall best agreement for the divergent (secondary) waves, whereas the drawdown (primary wave) could best be estimated from the vessel sinkage. The maximum recorded turbidity was mainly a function of the drawdown, and it could be well predicted from the parameterized bed shear stress. In conclusion, ship waves often induce bed and bank erosion in restricted waterways and, although simplistic formulas involve significant uncertainties, they are still useful tools for predictions. However, more studies are needed to determine the influence of a limited river cross section on the wave generation and the relationship between ship waves and sediment transport.

  • 199.
    Göransson, Gunnel
    et al.
    Statens geotekniska institut.
    Larson, Magnus
    Bendz, David
    Statens geotekniska institut.
    Variation in turbidity with precipitation and flow in a regulated river system - river Göta Älv, SW Sweden2013Ingår i: Hydrology and Earth System Sciences, ISSN 1027-5606, E-ISSN 1607-7938, Vol. 17, nr 7, s. 2529-2542Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The turbidity variation in time and space is investigated in the downstream stretch of the river Göta Älv in Sweden. The river is heavily regulated and carries the discharge from the largest fresh water lake in Sweden, Lake Vänern, to the outflow point in Göteborg Harbour on the Swedish west coast. The river is an important waterway and serves as a fresh-water supply for 700000 users. Turbidity is utilised as a water quality indicator to ensure sufficient quality of the intake water to the treatment plant. The overall objective of the study was to investigate the influence of rainfall, surface runoff, and river water flow on the temporal and spatial variability of the turbidity in the regulated river system by employing statistical analysis of an extensive data set. A six year long time series of daily mean values on precipitation, discharge, and turbidity from six stations along the river were examined primarily through linear correlation and regression analysis, combined with nonparametric tests and analysis of variance. The analyses were performed on annual, monthly, and daily bases, establishing temporal patterns and dependences, including; seasonal changes, impacts from extreme events, influences from tributaries, and the spatial variation along the river. The results showed that there is no simple relationship between discharge, precipitation, and turbidity, mainly due to the complexity of the runoff process, the regulation of the river, and the effects of Lake Vänern and its large catchment area. For the river Göta Älv, significant, positive correlations between turbidity, discharge, and precipitation could only be found during periods with high flow combined with heavy rainfall. Local precipitation does not seem to have any significant impact on the discharge in the main river, which is primarily governed by precipitation at catchment scale. The discharge from Lake Vänern determines the base level for the turbidity in the river, whereas local surface runoff and tributary discharge induced by rainfall govern the temporal variability in turbidity. Autocorrelation analysis indicates a temporal persistence in turbidity of about 10 days. The results also show that erosion along the main river, from the river bed and banks, is not a dominant contributor to the suspended sediment transport in the river under normal conditions. Further studies on the correlation between turbidity and suspended sediment transport and its relation to erosion processes are suggested.

  • 200.
    Göransson, Gunnel
    et al.
    Statens geotekniska institut.
    Larson, Magnus
    Bendz, David
    Statens geotekniska institut.
    Åkesson, Maria
    Mass transport of contaminated soil released into surface water by landslides (Göta River, SW Sweden)2012Ingår i: Hydrology and Earth System Sciences, ISSN 1027-5606, E-ISSN 1607-7938, Vol. 16, s. 1879-1893Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Landslides of contaminated soil into surface water represent an overlooked exposure pathway that has not been addressed properly in existing risk analysis for landslide hazard, contaminated land, or river basin management. A landslide of contaminated soil into surface water implies an instantaneous exposure of the water to the soil, dramatically changing the prerequisites for the mobilisation and transport of pollutants. In this study, an analytical approach is taken to simulate the transport of suspended matter released in connection with landslides into rivers. Different analytical solutions to the advection-dispersion equation (ADE) were tested against the measured data from the shallow rotational, retrogressive landslide in clayey sediments that took place in 1993 on the Göta River, SW Sweden. The landslide encompassed three distinct events, namely an initial submerged slide, followed by a main slide, and a retrogressive slide. These slides generated three distinct and non-Gaussian peaks in the online turbidity recordings at the freshwater intake downstream the slide area. To our knowledge, this registration of the impact on a river of the sediment release from a landslide is one of few of its kind in the world and unique for Sweden. Considering the low frequency of such events, the data from this landslide are highly useful for evaluating how appropriate the ADE is to describe the effects of landslides into surface water. The results yielded realistic predictions of the measured variation in suspended particle matter (SPM) concentration, after proper calibration. For the three individual slides it was estimated that a total of about 0.6 % of the total landslide mass went into suspension and was transported downstream. This release corresponds to about 1 to 2 % of the annual suspended sediment transport for that river stretch. The studied landslide partly involved an industrial area, and by applying the analytical solution to estimate the transport of metals in the sediments, it was found that landslides may release a significant amount of pollutants if large contaminated areas are involved. However, further studies are needed to develop more detailed descriptions of the transport processes. There is also a need to increase the knowledge on possible environmental consequences in the near and far field, in a short- and long-time perspective. In summary, the release of pollutants should not be neglected in landslide risk assessments.

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