En resa tillbaka i tiden för att förstå framtiden : En undersökning av organiskt material i eoliska lössjordssediment på västra Grönland, Kangerlussuaq.

Today's changing climate on Earth makes climate research more important than ever. By providing an understanding of the Earth's history and in particular places where large-scale climate change is taking place, for example Greenland, can one get an understanding about how the Earth will re...

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Bibliographic Details
Main Authors: Morin, Caroline, Sundman, Jessica
Format: Bachelor Thesis
Language:Swedish
Published: Uppsala universitet, Institutionen för geovetenskaper 2021
Subjects:
Online Access:http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-445877
Description
Summary:Today's changing climate on Earth makes climate research more important than ever. By providing an understanding of the Earth's history and in particular places where large-scale climate change is taking place, for example Greenland, can one get an understanding about how the Earth will react in the future. In this report has eolian loess deposits been analyzed from the permafrost region on Greenland, near the city Kangerlussuaq (Hällberg 2018). The eolian sediment can contain organic carbon that shows climate conditions during the time when the sedimentation occurred. In this report, the organic carbon has been measured using loss of ignition (LOI). The method is well-tried and measures the loss of weight in the samples, which answers to the loss of organic carbon (Dean 1974). The samples were heated to 100°C and thereafter burned at 550°C. The results from the LOI have been analyzed and compared to other data from the same location. This includes data from carbon-14 dating, X-ray fluorescence, grain size and magnetic susceptibility. The final data set has been mapped in the geographical information system. The maps gave an overview of the changes in the area. Results shows that there are connections between organic carbon and climate change in Greenland, which also is proved by correlation to other studies. Det rådande klimathotet och det föränderliga klimatet på jorden gör att klimatstudier är viktigare än någonsin. Genom att få en förståelse för jordens historia i synnerhet på platser där stora klimatförändringar sker, så som på Grönland, kan en uppfattning fås om hur vår jord kommer påverkas. I uppsatsen har eoliskt avsatt lössjord analyserats från permafrostområdet på Grönland, nära staden Kangerlussuaq (Hällberg 2018). Det eoliska sedimentet innehåller organiskt material som avspeglar klimatförhållanden på platsen för tiden då sedimentationen inträffade. I arbetet har innehållet av organiskt material undersökts genom metoden Loss of Ignition (LOI). Metoden är välbeprövad och går ut på att mäta förlust i ...