Sökning: "aeolian transport"

Hittade 5 uppsatser innehållade orden aeolian transport.

  1. 1. Loess as an Environmental Proxy for Reconstruction of Palaeoclimate in the High Arctic

    Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Sara Rognås; [2023]
    Nyckelord :aeolian transport; loess; grain size analysis; loss on ignition; palaeoclimate; Svalbard; Holocene; vindtransporterat material; lössjord; kornstorlek; loss on ignition; paleoklimat; Svalbard; Holocen;

    Sammanfattning : We are currently speeding towards significant changes in the climate of the earth which, if ignored, will lead to severely altered climatic conditions with serious consequences for several species and ecosystems. The polar regions especially are very sensitive to climate changes, and the changes these regions undergo affect the climate on a global scale. LÄS MER

  3. 2. Investigating the Magnetic Susceptibility of Cornish Loess as a Tool for Understanding the Palaeoclimate of SW England

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Love Tingdal; [2020]
    Nyckelord :loess; palaeoclimate; Lizard Peninsula; Isles of Scilly; palaeoprecipitation; magnetic susceptibility; loess; paleoklimat; Lizard-halvön; Scillyöarna; historisk årsmedelnederbörd; magnetisk susceptibilitet;

    Sammanfattning : Loess is a silty material produced via glacial grinding and its deposition is usually associated with colder periods when there is a considerable increase in atmospheric dust transport. The magnetic susceptibility of loess-palaeosol sequences has been the subject of extensive research within palaeoclimatology as it has proven to be reliable climate proxy. LÄS MER

  4. 3. Aeolian and Pedogenic Processes of Loess in Southern England

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Ragna Orbe; [2019]
    Nyckelord :loess; Pegwell Bay; grain size distribution; magnetic susceptibility; past-climate reconstruction; lössavlagringar; Pegwell Bay; partikelstorleks distribution; magnetisk mottaglighet; historisk klimatrekonstruktion;

    Sammanfattning : Loess is an aeolian sediment that can be utilized as a detailed proxy of past climate, since it is one of few sediments that is deposited directly from the atmosphere on land. Investigation of loess deposits can give understanding of past regional and local wind circulation patterns and velocities, atmospheric dustiness, as well as paleo-precipitation and weathering conditions. LÄS MER

  5. 4. Influence of Sample Preparation on Portable XRF-analyses of Aeolian Sediments: a Case Study

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Markus L. Fiola; [2017]
    Nyckelord :portable XRF; loess; sediment; bärbar XRF; lössjord; sediment;

    Sammanfattning : The geochemical composition of aeolian sediments like windblown dust particles is of major importance for the exploration of dust origin and weathering conditions. This allows for the reconstruction of dust transport pathways and thus wind directions and palaeoclimate conditions. LÄS MER

  7. 5. Historiska ljudinstallationer och deras användning i modern tid

    Kandidat-uppsats, SLU/Dept. of Urban and Rural Development

    Författare :Linn Nilsson; [2013]
    Nyckelord :akustik; eolsharpa; kaskad; landskapsarkitektur; ljudinstallation; vattenorgel; vindspel;

    Sammanfattning : Att gestalta med ljud inom landskapsarkitektur kan ses som relativt ovanligt. Ljudets inverkan på människor och hur detta påverkar utemiljöers karaktär har det dock experimenterats med sedan antikens Grekland. Man använde sig av olika ljudinstallationer som producerade ljud med hjälp av naturens krafter – luft och vatten. LÄS MER