Sökning: "aeolian sand"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden aeolian sand.

1. 1. Reconstructing Mid-Late Holocene Arctic Climate Using Loess Deposits From Kangerlussuaq, Greenland

   Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

   Författare :William Mörtsjö Zung; [2023]
   Nyckelord :;

   Sammanfattning : The current geological epoch, the Holocene, began 11,700 years ago. During this time, a thermal maximum in temperature was reached somewhere during the early-middle stage at 8-5 kyrs ago which was followed by a period of neoglacial cooling, culminating in the little ice age (LIA). LÄS MER

3. 2. Investigating Sand Dune Location, Orientation and Geomorphometry Through GEOBIA-Based Mapping: A Case Study in Northern Sweden

   Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

   Författare :Melanie Stammler; [2020]
   Nyckelord :sand dunes; geomorphological mapping; object-based image analysis; landscape development; sanddyner; geomorfologisk kartläggning; geografisk objektbaserad bildanalys; landskapsutveckling;

   Sammanfattning : Climate change has repeatedly been framed as the defining issue of the Anthropocene and with the Arctic changing at unpreceded speed need is high for a profound understanding of the Northern Swedish landscape. Northern Swedish aeolian sand dunes have been impacted by climatic changes throughout time. LÄS MER

4. 3. Eoliska avlagringar och vindriktningar under holocen i och kring Store Mosse, södra Sverige

   Kandidat-uppsats, Lunds universitet/Geologiska institutionen

   Författare :Tim Bjermo; [2019]
   Nyckelord :Store Mosse; optiskt stimulerad luminiscens OSL ; kvartsdatering; flygsand; eoliska dyner; holocen; fjärranalys; LiDAR; optically stimualted luminiscence OSL ; quartz dating; aeolian sand; aeolian dunes; Holocene; remote sensing.; Earth and Environmental Sciences;

   Sammanfattning : Eoliska sanddyner är en sällan undersökt resurs ur ett paleoklimatperspektiv. Genom att undersöka dynernas geomorfologi och strukturer kan de klassificeras som olika dyntyper. Eoliska sanddyner kräver speciella omständigheter och förutsättningar för att bildas och agerar värdefulla klimatarkiv för de tidperioder då de avsatts. LÄS MER

5. 4. Stratigraphy and dating of a lake sediment record from Lyngsjön, eastern Scania : human impact and aeolian sand deposition during the last millennium

   Master-uppsats, Lunds universitet/Geologiska institutionen

   Författare :Marijana Stevic; [2019]
   Nyckelord :aeolian activity; human impact; geochemistry; lake sediments; pollen; Earth and Environmental Sciences;

   Sammanfattning : A small lake in north-eastern Scania, southern Sweden, Lake Lyngsjön, reveals a long history of aeolian sand drift based on a 3 meter long sediment sequence covering the last approximately 1400 years. Human impact, primarily through intensified land use and decreased forest cover, has periodically led to increased aeolian sand drift both locally and regionally. LÄS MER

7. 5. 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