The Littorina transgression in southeastern Sweden and its relation to mid-Holocene climate variability
Lateglacial and Holocene shoreline displacement along the Baltic coast resulted from both the isostatic land uplift and the ice-volume-equivalent sea-level rise. Relative changes of these two components led to alternating contact/isolation of the Baltic Basin with the North Sea during the Holocene....
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Deaprtment of Geology
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ftulundlup:oai:lup.lub.lu.se:75d54b38-176a-4cff-be83-a14b39fe1426 2023-05-15T13:48:54+02:00 The Littorina transgression in southeastern Sweden and its relation to mid-Holocene climate variability Yu, Shiyong 2003 application/pdf https://lup.lub.lu.se/record/466416 https://portal.research.lu.se/files/4863150/1693171.pdf eng eng Deaprtment of Geology https://lup.lub.lu.se/record/466416 urn:isbn:91-86746-54-5 https://portal.research.lu.se/files/4863150/1693171.pdf scopus:1642422918 info:eu-repo/semantics/openAccess Lundqua thesis; (51) (2003) ISSN: 0281-3033 Geology marklära kartografi Fysisk geografi geomorfologi climatology cartography pedology geomorphology Physical geography tidal action solar forcing global meltwater pulse North Atlantic storminess climate changes shoreline displacements sea-level fluctuations Littorina transgression Baltic Sea klimatologi thesis/doccomp info:eu-repo/semantics/doctoralThesis text 2003 ftulundlup 2023-02-01T23:27:17Z Lateglacial and Holocene shoreline displacement along the Baltic coast resulted from both the isostatic land uplift and the ice-volume-equivalent sea-level rise. Relative changes of these two components led to alternating contact/isolation of the Baltic Basin with the North Sea during the Holocene. The Littorina transgression was a significant palaeoceanographic change that took place during the mid-Holocene in southern Sweden. However, the detailed pattern of the transgression has long been debated. As yet, the rate, magnitude and cause(s) of the transgression as well as the physical link with the North Atlantic climate are poorly known. In this study, shoreline displacement and coastal palaeoecology were reconstructed on the basis of multi-disciplinary studies of sediment sequences from four basins located at an elevation range between –1 and 8 m above present sea level in southeastern Sweden. Coastal basins with well defined thresholds may provide powerful constraints on relative sea-level changes. The timing of the Littorina transgression was determined by dating the lacustrine/brackish-marine transitions in sediment sequences recovered from these basins. Following a slight rise, the transgression culminated between 8000 and 7500 cal. BP, marked by a c. 8-m relative sea-level rise at an accelerated rate of ~15 mm yr-1. This relatively rapid rise can be ascribed to the partial collapse of the Antarctic Ice Sheet. From 6500 cal. BP, the relative level of the Baltic Sea fell as a result of the deceleration of global sea-level rise and continued isostatic rebound. Superimposed on this eustatic pattern are five minor transgressions identified during the middle Holocene: L1 8500–8200, L2 7800–6900, L3 6400–5600, L4 5300–4700, and L5 4500–4100 cal. BP. Evidence from the northwestern European coasts and Greenland ice cores suggests that these episodic sea-level rises may have been related to increased storminess in the North Atlantic realm, which overprinted global ice-volume changes at millennial time scales. ... Doctoral or Postdoctoral Thesis Antarc* Antarctic Greenland Greenland ice cores Ice Sheet North Atlantic Lund University Publications (LUP) Antarctic The Antarctic Greenland |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Geology marklära kartografi Fysisk geografi geomorfologi climatology cartography pedology geomorphology Physical geography tidal action solar forcing global meltwater pulse North Atlantic storminess climate changes shoreline displacements sea-level fluctuations Littorina transgression Baltic Sea klimatologi |
spellingShingle |
Geology marklära kartografi Fysisk geografi geomorfologi climatology cartography pedology geomorphology Physical geography tidal action solar forcing global meltwater pulse North Atlantic storminess climate changes shoreline displacements sea-level fluctuations Littorina transgression Baltic Sea klimatologi Yu, Shiyong The Littorina transgression in southeastern Sweden and its relation to mid-Holocene climate variability |
topic_facet |
Geology marklära kartografi Fysisk geografi geomorfologi climatology cartography pedology geomorphology Physical geography tidal action solar forcing global meltwater pulse North Atlantic storminess climate changes shoreline displacements sea-level fluctuations Littorina transgression Baltic Sea klimatologi |
description |
Lateglacial and Holocene shoreline displacement along the Baltic coast resulted from both the isostatic land uplift and the ice-volume-equivalent sea-level rise. Relative changes of these two components led to alternating contact/isolation of the Baltic Basin with the North Sea during the Holocene. The Littorina transgression was a significant palaeoceanographic change that took place during the mid-Holocene in southern Sweden. However, the detailed pattern of the transgression has long been debated. As yet, the rate, magnitude and cause(s) of the transgression as well as the physical link with the North Atlantic climate are poorly known. In this study, shoreline displacement and coastal palaeoecology were reconstructed on the basis of multi-disciplinary studies of sediment sequences from four basins located at an elevation range between –1 and 8 m above present sea level in southeastern Sweden. Coastal basins with well defined thresholds may provide powerful constraints on relative sea-level changes. The timing of the Littorina transgression was determined by dating the lacustrine/brackish-marine transitions in sediment sequences recovered from these basins. Following a slight rise, the transgression culminated between 8000 and 7500 cal. BP, marked by a c. 8-m relative sea-level rise at an accelerated rate of ~15 mm yr-1. This relatively rapid rise can be ascribed to the partial collapse of the Antarctic Ice Sheet. From 6500 cal. BP, the relative level of the Baltic Sea fell as a result of the deceleration of global sea-level rise and continued isostatic rebound. Superimposed on this eustatic pattern are five minor transgressions identified during the middle Holocene: L1 8500–8200, L2 7800–6900, L3 6400–5600, L4 5300–4700, and L5 4500–4100 cal. BP. Evidence from the northwestern European coasts and Greenland ice cores suggests that these episodic sea-level rises may have been related to increased storminess in the North Atlantic realm, which overprinted global ice-volume changes at millennial time scales. ... |
format |
Doctoral or Postdoctoral Thesis |
author |
Yu, Shiyong |
author_facet |
Yu, Shiyong |
author_sort |
Yu, Shiyong |
title |
The Littorina transgression in southeastern Sweden and its relation to mid-Holocene climate variability |
title_short |
The Littorina transgression in southeastern Sweden and its relation to mid-Holocene climate variability |
title_full |
The Littorina transgression in southeastern Sweden and its relation to mid-Holocene climate variability |
title_fullStr |
The Littorina transgression in southeastern Sweden and its relation to mid-Holocene climate variability |
title_full_unstemmed |
The Littorina transgression in southeastern Sweden and its relation to mid-Holocene climate variability |
title_sort |
littorina transgression in southeastern sweden and its relation to mid-holocene climate variability |
publisher |
Deaprtment of Geology |
publishDate |
2003 |
url |
https://lup.lub.lu.se/record/466416 https://portal.research.lu.se/files/4863150/1693171.pdf |
geographic |
Antarctic The Antarctic Greenland |
geographic_facet |
Antarctic The Antarctic Greenland |
genre |
Antarc* Antarctic Greenland Greenland ice cores Ice Sheet North Atlantic |
genre_facet |
Antarc* Antarctic Greenland Greenland ice cores Ice Sheet North Atlantic |
op_source |
Lundqua thesis; (51) (2003) ISSN: 0281-3033 |
op_relation |
https://lup.lub.lu.se/record/466416 urn:isbn:91-86746-54-5 https://portal.research.lu.se/files/4863150/1693171.pdf scopus:1642422918 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766249938312757248 |