Sökning: "silt slope"

Visar resultat 1 - 5 av 12 uppsatser innehållade orden silt slope.

  1. 1. : Inverkan av släntnära portryck på släntstabilitet : En känslighetsanalys av siltslänter längs Ångermanälven

    Master-uppsats, KTH/Jord- och bergmekanik

    Författare :Katia Calming; Myrna Öttenius; [2022]
    Nyckelord :Silt; slope stability; pore water pressure; SLOPE W; Ångermanälven; sensitivity analysis;

    Sammanfattning : The stability of natural slopes is goverened by many factors, one of which is the porewater pressure. In this study, a sensitivity analysis has been conducted in GeostudioSLOPE/W to investigate the impact of near-surface pore water pressure on thefactor of safety i silt slopes. LÄS MER

  3. 2. Water quality and organic matter linkages in waters draining arable fields

    Master-uppsats, SLU/Dept. of Soil and Environment

    Författare :Adam Eriksson; [2021]
    Nyckelord :Natural organic matter NOM ; particular organic matter POM ; dissolved organic matter DOM ; allochthonous; autochthonous; Florescence index FIX ; Freshness index BIX ; Humification index HIX ; SUVA 254; E2:E3; Spectral Slope; Observation fields; microbial matter; humic matter; unfiltered samples UF ; filtered samples F45 ;

    Sammanfattning : This study investigated leaching of natural organic matter (NOM) in twelve Swedish arable fields with regards to the quality of dissolved organic matter (DOM) and particulate organic matter (POM), using Absorbance (UV-Vis) and fluorescence spectrometry (EEM). DOM is defined as organic matter (OM) 0.45 μm. LÄS MER

  4. 3. Effect of Environmental Factors on Pore Water Pressure in River Bank Sediments, Sollefteå, Sweden

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Hanna Fritzson; [2017]
    Nyckelord :negative pore water pressures; matrix suction; silt slope; slope stability; pore water pressure variations; negativa porvattentryck; siltslänt; släntstabilitet; porvattentrycksvariationer;

    Sammanfattning : Pore water pressure in a silt slope in Sollefteå, Sweden, was measured from 2009-2016. The results from2009-2012 were presented and evaluated in a publication by Westerberg et al. (2014) and this report is an extension of that project.In a silt slope the pore water pressures are generally negative, contributing to the stability of theslope. LÄS MER

  5. 4. Geochemistry of stream plants and its statistical relations to soil- and bedrock geology, slope directions and till geochemistry : a GIS-analysis of small catchments in northern Sweden

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Harry Eriksson; [2017]
    Nyckelord :Biogeochemistry; GIS; Physical Geography and Ecosystem analysis; Geographical Information Systems; Geochemistry; Catchments; Drainage areas; Earth and Environmental Sciences;

    Sammanfattning : Subaquatic mosses and stream plants have been recognized as suitable sample media for detection of geochemical variations in their surrounding environments. These plants were originally used in search for mineral deposits but later on also for detection of environmental pollution. LÄS MER

  7. 5. Släntstabilitetsanalys av 3D finita element modellering : En jämförelsestudie mellan 2D- och 3D-simuleringar

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Geoteknologi

    Författare :Robin Larsson; [2017]
    Nyckelord :Släntstabilitet; FEM; Finita element modellering;

    Sammanfattning : Tyréns ABs har utfört stabilitetsundersökningar för fastigheterna Plogen16samtVälten2 och 3 i Umeå kommun. Områdena är attraktiva vid Umeälv och fastighetsbolaget Cityfastigheter i Umeå AB har önskan att exploatera dem. De beaktade områdena innesluts av Tvärån och Umeälv som medför att området får ett komplext utseende. LÄS MER