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Relation between sediment flux variation and land use patterns along the Swedish Baltic Sea coast

Khan, Mansoor LU (2013) In Dissertations at Geology at Lund University GEOR02 20131
Department of Geology
Abstract
The Baltic Sea is one of the most studied seas in the world and has been in the spotlight due to its wide range of environmental problems. Human impact and climate influence on the Baltic Sea is of major concerns. This study aims to reconstruct the environment of the south east coast of the Baltic Sea and also analyze the human impact and climate influence in changing the landscape and its impact on sedimentation pattern of the marine coastal sediments over time through high resolution particle size analysis using the Sedigraph method. Two stations were selected from the southeastern coast of the Baltic Sea: Gåsfjärden, Västervik and Yttre Redden, Karlskrona. Five cores were collected from Gåsfjärden, one 5.58 m core and four shorter... (More)
The Baltic Sea is one of the most studied seas in the world and has been in the spotlight due to its wide range of environmental problems. Human impact and climate influence on the Baltic Sea is of major concerns. This study aims to reconstruct the environment of the south east coast of the Baltic Sea and also analyze the human impact and climate influence in changing the landscape and its impact on sedimentation pattern of the marine coastal sediments over time through high resolution particle size analysis using the Sedigraph method. Two stations were selected from the southeastern coast of the Baltic Sea: Gåsfjärden, Västervik and Yttre Redden, Karlskrona. Five cores were collected from Gåsfjärden, one 5.58 m core and four shorter Gemini cores (~0.5m) and similarly five cores were collected from Karlskrona, one 5.20 m and 4 shorter Gemini cores (~0.4m). The age model for both of the cores are based on AMS 14C dates. The Gåsfjärden core shows the last 6000 years and Karlskrona extends to the last 7000 years. The Gåsfjärden core has laminations in the whole core, which imply continuous low oxygen conditions in the area. The up-core decrease in the finer fraction is observed more or less throughout the Gåsfjärden core data which is attributed to deforestation, expansion of agriculture, erosion, and also the hydrographic conditions of the Baltic Sea. In the Karlskrona core there are large variations observed in the lower part of the core with little variability at the upper part. The large variability at the lower part is possibly linked to Littorina transgression and the small variability at upper part could be due to agricultural activities and climate changes. Natural drainage of the wetlands and ditching of fields are observed in the Gemini cores of both of the stations. (Less)
Please use this url to cite or link to this publication:
author
Khan, Mansoor LU
supervisor
organization
course
GEOR02 20131
year
type
H2 - Master's Degree (Two Years)
subject
keywords
Baltic Sea, landscape, coastal sediments, sedigraph, Gåsfjärden, Karlskrona, gemini cores
publication/series
Dissertations at Geology at Lund University
report number
331
language
English
id
3625668
date added to LUP
2013-03-26 13:46:32
date last changed
2013-03-26 13:46:32
@misc{3625668,
  abstract     = {The Baltic Sea is one of the most studied seas in the world and has been in the spotlight due to its wide range of environmental problems. Human impact and climate influence on the Baltic Sea is of major concerns. This study aims to reconstruct the environment of the south east coast of the Baltic Sea and also analyze the human impact and climate influence in changing the landscape and its impact on sedimentation pattern of the marine coastal sediments over time through high resolution particle size analysis using the Sedigraph method. Two stations were selected from the southeastern coast of the Baltic Sea: Gåsfjärden, Västervik and Yttre Redden, Karlskrona. Five cores were collected from Gåsfjärden, one 5.58 m core and four shorter Gemini cores (~0.5m) and similarly five cores were collected from Karlskrona, one 5.20 m and 4 shorter Gemini cores (~0.4m). The age model for both of the cores are based on AMS 14C dates. The Gåsfjärden core shows the last 6000 years and Karlskrona extends to the last 7000 years. The Gåsfjärden core has laminations in the whole core, which imply continuous low oxygen conditions in the area. The up-core decrease in the finer fraction is observed more or less throughout the Gåsfjärden core data which is attributed to deforestation, expansion of agriculture, erosion, and also the hydrographic conditions of the Baltic Sea. In the Karlskrona core there are large variations observed in the lower part of the core with little variability at the upper part. The large variability at the lower part is possibly linked to Littorina transgression and the small variability at upper part could be due to agricultural activities and climate changes. Natural drainage of the wetlands and ditching of fields are observed in the Gemini cores of both of the stations.},
  author       = {Khan, Mansoor},
  keyword      = {Baltic Sea,landscape,coastal sediments,sedigraph,Gåsfjärden,Karlskrona,gemini cores},
  language     = {eng},
  note         = {Student Paper},
  series       = {Dissertations at Geology at Lund University},
  title        = {Relation between sediment flux variation and land use patterns along the Swedish Baltic Sea coast},
  year         = {2013},
}