Avancerad sökning

Visar resultat 1 - 5 av 8 uppsatser som matchar ovanstående sökkriterier.

  1. 1. Åsars bildning och modellering av isälvar under äldre och yngre Dryas i Svealand

    Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Emilie Åström; [2020]
    Nyckelord :esker; channel ice stream; Weichsel; Dryas; flow accumulation; Svealand; åsar; isälvar; Weichsel; Dryas; flödesackumulation; Svealand;

    Sammanfattning : Sveriges geomorfologi har till största del bildats under den senaste glaciationens erosion och depositions processer. Vid denna glaciations avsmältning rann smältvattnet bort från glaciären i isälvarna genom tunnlar under inlandsisen. LÄS MER

  3. 2. Geomorphic and particle attributes influence on entrainment and sediment transport in semi-alluvial streams

    Master-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Joe Sundin; [2020]
    Nyckelord :Stream geomorphology; Sediment transport; Entrainment; Grain attributes; Bankfull shear stress; Dimensionless critical shear stress; Slope; Boulders; Constrainment;

    Sammanfattning : Streams around the world are shaped by physical processes between water and sediment transport which generates unique geomorphic structures for each stream. This study aimed to evaluated how geomorphic structures and grain attributes would influence entrainment frequency and transport distance of traced clasts. LÄS MER

  4. 3. 2D Effects of Geomorphology and Discharge on Hyporheic Exchange—a HEC-RAS Modelling Study

    Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

    Författare :Olivia Preston; [2020]
    Nyckelord :average hyporheic exchange velocity; water surface elevation; water surface concavity; hydrostatic head;

    Sammanfattning : Hyporheic exchange is an ecologically and biogeochemically essential function of rivers and streams. One important driver of hydrostatic (hyporheic) exchange is gra- dients in the hydrostatic hydraulic head at the streambed. LÄS MER

  5. 4. Where does the stream begin? Stream initiation under variable wetness conditions in a boreal landscape

    Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Evelina Gallon; Sanna Lindberg; [2014]
    Nyckelord :;

    Sammanfattning : The understanding of where the streams begin is an important factor in both hydrology and geomorphology, as well as for land use activities. Despite this, only a few research projects have been done in a snowmelt-dominated boreal landscape. LÄS MER

  7. 5. Late Weichselian glacial and geomorphological reconstruction of South-Western Scania, Sweden

    Master-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Kilian Barth; [2011]
    Nyckelord :Trelleborg; Vellinge; ice stream; Scania; ice lobe; late Weichselian; Malmö; Skåne; Weichsel; Söderslätt; Backlandskapet; isström ; Earth and Environmental Sciences;

    Sammanfattning : This study was carried out to deliver new insight into the late Weichselian landscape development of South Western Scania and to make regional scale glaciation models of South-Western Scandinavia more accurate. The goal of this study is to find out how the latest ice advances affected the study area. LÄS MER