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Two Boat Lake as an Historical Archive for Future Studies by GRASP: Greenland Analogue Surface Project
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
2014 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

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.

Abstract [sv]

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 sedimentmäktighet i de norra delarna

av Two Boat Lake. Som en slutsats jämfördes de studerade metoderna med den

maximala tjockleken och områdesbeskrivningen för att föreslå tillvägagångssätt vid

analys av framtida borrkärnor.

Place, publisher, year, edition, pages
2014. , 20 p.
Examensarbete vid Institutionen för geovetenskaper, ISSN 1650-6553 ; 96
National Category
Other Earth and Related Environmental Sciences
URN: urn:nbn:se:uu:diva-228622OAI: oai:DiVA.org:uu-228622DiVA: diva2:734536
Educational program
Bachelor Programme in Earth Science
2014-06-03, Hambergsalen, Geocentrum, Uppsala, 10:31 (Swedish)
Available from: 2014-08-15 Created: 2014-07-18 Last updated: 2014-08-15Bibliographically approved

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