Essays about: "östersjön"

Showing result 16 - 20 of 127 essays containing the word östersjön.

1. 16. Phosphorus accumulation in a free water surface wetland discharging into the Baltic Sea

   University essay from SLU/Dept. of Aquatic Sciences and Assessment

   Author : Manuela Watschka; [2021]
   Keywords : free water surface wetland; phosphorus accumulation; internal loading; sediment accumulation;

   Abstract : Eutrophication has been an issue of the Baltic Sea for a long time, causing de-creased water clarity due to enhanced growth of algae and oxygen depletion dur-ing the decomposition of algae. The study investigated the free water surface wetland Vilhelmsberg that treats agricultural runoff before the water reaches the Baltic Sea. READ MORE

3. 17. Development of northern pike (Esox lucius) populations in the Baltic Sea, and potential effects of grey seal (Halichoerus grypus) predation

   University essay from SLU/Dept. Of Aquatic Resources

   Author : Rebecka Svensson; [2021]
   Keywords : diet analysis; ; marine mammals; predator-prey; socio-economic; sport fishing; recreational fisheries;

   Abstract : Worldwide, marine mammal populations are increasing after considerable efforts to turn the downward trends caused by hunting, accidental mortality and pollution. The ecosystem effects from the increases of these top predators may be pronounced, but are in most cases poorly known. READ MORE

4. 18. Characterisation of Low-Level Jets and their Influence on Low-Level Clouds over the Baltic Sea; Östergarnsholm Observatory, Sweden

   University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Förbränningsfysik

   Author : Johan Lundberg; [2021]
   Keywords : Low-level jets; Low-level clouds; LLJs; LLCs; Boundary layer; ABL; CBH; Lidar; Ceilometer; Turbulent intensity; Physics and Astronomy;

   Abstract : In this study, about two years of data from Östergarnsholm in the Baltic Sea are used to analyse offshore low-level clouds (LLCs) influenced by low-level jets (LLJs) in the marine atmospheric boundary layer. The LLJs are passages of strong horizontal winds near the surface and are measured using a Doppler LiDAR, which provides information about the wind speed and wind direction up to 300 meters. READ MORE

5. 19. The Eemian Baltic Sea hydrography and paleoenvironment based on foraminiferal geochemistry

   University essay from Lunds universitet/Geologiska institutionen

   Author : Julia Chonewicz; [2020]
   Keywords : trace elements; benthic foraminifera; last interglacial; temperature reconstruction; geochemistry; Earth and Environmental Sciences;

   Abstract : I den här masteruppsatsen undersöktes geokemin i kalkskalen av bottenlevande foraminiferer från Anholt (Kattegat), Ristinge (Bälthavet) och Obrzynowo (Egentliga Östersjön), för att rekonstruera de hydrografiska förhållanden i Östersjön och paleomiljön under den senaste interglacialen (130 - 115 ka BP). De variabler som analyserades innefattade Mg/Ca, Ba/Ca och Mn/Ca samt stabila syre- och kolisotoper (δ18O och δ13C) i kombination med data från tidigare studier och modern hydrografi. READ MORE

6. 20. Self-levelling Platform Concept for a Winch-based, Single Point Absorbing, Wave Energy Converter

   University essay from KTH/Maskinkonstruktion (Avd.)

   Author : Anton Bergman; Robin Eriksson; Lars-Fredrik Grahn; [2020]
   Keywords : Point absorbing; Self-levelling; Wave power; Winch-based; Nivellerande; Punktabsorberande; Vågkraft; Vinschbaserat;

   Abstract : This report covers a bachelor thesis project to design a concept for a levelling system to a point absorbing wave energy converter that uses a winch with a chain, which has restricted capabilities to bending and thus requires a system which compensates for this. First of all, a literature study was made to see if there were any technologies that could be used, and also a wide search for information about the wave conditions in the Baltic sea were performed to find what requirements would be necessary for the concept to be able to withstand the conditions faced there. READ MORE