Two Boat Lake as an Historical Archive for Future Studies by GRASP : Greenland Analogue Surface Project

Two Boat Lake is a non-glacial lake situated within the largest ice free area on Greenland. This literary study has investigated whether it could potentially become a good environmental archive in future studies. As a periglacial lake with permafrost and a talik at its bottom, Two Boat Lake is inter...

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Bibliographic Details
Main Author: Dahlgren, Sara
Format: Bachelor Thesis
Language:English
Published: Uppsala universitet, Institutionen för geovetenskaper 2014
Subjects:
Ice
Online Access:http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-228622
Description
Summary:Two Boat Lake is a non-glacial lake situated within the largest ice free area on Greenland. This literary study has investigated whether it could potentially become a good environmental archive in future studies. As a periglacial lake with permafrost and a talik at its bottom, Two Boat Lake is interesting for the Greenland Analogue Surface Project (GRASP) from the Swedish Nuclear and Waste Management (SKB) when investigating the ecology and hydrology of a landscape that will be similar to a future glaciated repository in Sweden. The purpose of this report is to analyse data of the sediment thickness in the lake, gathered with ground penetrating radar, to see where the best place would be to drill a sediment core in future studies. Different articles were studied to compare advantages and disadvantages of methods focusing on geomorphology, organic content, fossils and isotopes or chemical analyses. The result shows a maximum sediment thickness in the northern part of Two Boat Lake. As a conclusion, the studied methods, the maximum sediment thickness and the regional setting was compared to propose an approach when analysing future sediment cores. Two Boat Lake är en icke-glacial sjö som ligger inom det största isfria området på Grönland. Denna litteraturstudie har undersökt om sjön potentiellt skulle kunna bli ett bra historiskt arkiv i framtida studier. Som en periglacial sjö med en talik på botten i ett klimat med permafrost är Two Boat Lake intressant för Greenland Analogue Surface Project (GRASP) från Svensk Kärnbränslehantering (SKB) då de undersöker ekologi och hydrologi i ett landskap som liknar ett framtida kärnbränsleförvar i Sverige. Syftet med den här rapporten är att analysera rådata insamlad med ground penetrating radar för att se var den bästa platsen vore att borra i framtida studier. Olika artiklar studerades för att jämföra för- och nackdelar hos metoder som fokuserar på geomorfologi, organiskt innehåll, fossil och isotoper eller kemiska analyser. Radarbilderna visar på en maximal ...