Sökning: "peat accumulation"

Visar resultat 1 - 5 av 10 uppsatser innehållade orden peat accumulation.

1. 1. Variations in depositional environments of the Paleogene Firkanten Formation across Adventdalen, from Operafjellet to Breinosa

   Master-uppsats, Göteborgs universitet/Institutionen för geovetenskaper

   Författare :Anna Stella Guðmundsdóttir; [2021-03-18]
   Nyckelord :;

   Sammanfattning : The lowermost Paleogene clastic infill of the Central Spitsbergen Tertiary Basin, the coal bearing Firkanten Formation, has been the subject of study for researchers in the past but little focus has been on the northeast edge of the basin until now. Due to the economic potential of the coal seams in the formation, the Norwegian mining company, Store Norske Spitsbergen Grubekompani (SNSG), has for several years conducted core drilling in key locations in basin, and for decades, they have given an access to their core material to researchers. LÄS MER

3. 2. Stratigraphic and palaeoenvironmental observations in the deposits of a postglacial kettle hole, in the county of Västernorrland

   Master-uppsats, Umeå universitet/Institutionen för idé- och samhällsstudier

   Författare :Genofeva Eva Kourela; [2020]
   Nyckelord :Multiproxy analysis; palaeoenvironment; minerals; peat accumulation; kettle hole; Coleoptera; environmental archaeology;

   Sammanfattning : The increased human impact on the environment and climate after the retreat of the Last Glacial has strengthened its importance in the region of Västernorrland where Mesolithic sites are evident. This study focuses on a multiproxy analysis, where archaeological and natural science methods are combined to test several techniques in a peat sample. LÄS MER

4. 3. CO2 emissions from drained calcareous organic soil profiles from the Mästermyr area

   Uppsats för yrkesexamina på avancerad nivå, SLU/Dept. of Soil and Environment

   Författare :Erik Siggelin; [2017]
   Nyckelord :peatlands; peat; marl; Gotland;

   Sammanfattning : Peatlands in their natural state are in general considered as net sinks of greenhouse gases over time, with the accumulation of dead organic matter as peat. Drained organic soils have been of importance for Swedish agriculture for more than a century. LÄS MER

5. 4. Historical land use in Scandinavia and its influence on carbon storage in soil and peat in the boreal landscape

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

   Författare :Sandra Hahnwald; [2015]
   Nyckelord :active pipe concept; hay production; medieval crisis; shieling; slash-and-burn cultivation;

   Sammanfattning : The history of land utilization in Scandinavia is characterized by two major periods of open landscape. The first one temporal ranged from cal. AD 0-500 and the second one ranged from cal. AD 1200-1900 including the medieval crisis in Scandinavia. LÄS MER

7. 5. Influence of depositional mobility (downwashing) on the accumulation of atmospherically supplied elements in peat cores: an experimental approach

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

   Författare :Keyao Chen; [2014]
   Nyckelord :;

   Sammanfattning : The potential influence of downwashing on atmospherically deposited elements is of rare focus compared with other geochemical processes related to peat. Downwashing may cause a rapid downward movement of atmospherically supplied elements before they bond to the peat organic substrate and thus reduce the reliability of age-depth models that rely on atmospherically supplied radioisotopes (e. LÄS MER