Sökning: "Maud Marin"

Hittade 2 uppsatser innehållade orden Maud Marin.

1. 1. Methane Sulphonic Acid in East Antarctic Coastal Firn and Ice Cores and Its Relationship with Chlorophyll-a and Sea Ice Extent in the Southern Ocean

   Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

   Författare :Emma Nilsson; [2022]
   Nyckelord :methane sulphonic acid; firn cores; sea ice proxy; marine primary productivity; Fimbul Ice Shelf; Dronning Maud Land; metansulfonsyra; firnkärnor; havsis-proxy; marin primärproduktion; Fimbulisen; Dronning Maud Land;

   Sammanfattning : The seasonal retreat of sea ice in the austral spring and summer around Antarctica has a significant effect on phytoplankton activity, mainly due to light availability, meltwater input of dissolved iron, and surface water stratification. Phytoplankton produce dimethylsulfoniopropionate, the precursor to the climate-cooling gas dimethyl sulphide, which is ventilated to the atmosphere and oxidised to methane sulphonic acid (MSA). LÄS MER

3. 2. Trace fossils from the Permian of western Dronning Maud Land, Antarctica

   Magister-uppsats, Lunds universitet/Geologiska institutionen

   Författare :Jenny Sälgeback; [1999]
   Nyckelord :trace fossils; Permian; Antarctica; non-marine; Scoyenia ichnofacies; Aulichnites; Cochlichnus; Helminthopsis; Lockeia; Palaeophycus; Skolithos; Earth and Environmental Sciences;

   Sammanfattning : Non-marine trace fossils from the Permian of Antarctica are systematically described and possible depositional environments are discussed. The studied material derives from sedimentary sequences consisting mainly of sandstone and shale at Vestfjella and Kirwanveggen, western Dronning Maud Land. LÄS MER