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Development shifts on the emerging Järve coast (Estonia) in Late Holocene.

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Title: Development shifts on the emerging Järve coast (Estonia) in Late Holocene.
Authors: Luik, Katre1 (AUTHOR) katre.luik@tlu.ee, Tõnisson, Hannes1 (AUTHOR), Rivis, Reimo1 (AUTHOR), Vilumaa, Kadri1 (AUTHOR), Vaasma, Tiit1 (AUTHOR), Vandel, Egert1 (AUTHOR), Tamura, Toru2 (AUTHOR), Suursaar, Ülo1,3 (AUTHOR)
Source: Marine Geology. Mar2025, Vol. 481, pN.PAG-N.PAG. 1p.
Subjects: Optically stimulated luminescence dating, Glacial isostasy, Beach erosion, Sea ice, Little Ice Age, Beach ridges, Geomorphology, Storm surges
Abstract: This study identifies a sequence of accretional paleospits and beach ridges at the Järve coast, which developed over the past 4000 years (4 ka) mostly through coastal progradation and land emergence driven by glacial isostatic adjustment (GIA). Using optically stimulated luminescence dating, LiDAR elevation data, historical cartography, and recent instrumental metocean forcing data, we analyze the historical developments in relative sea level (RSL) and major shifts in the region's geomorphology from the Mid- to Late-Holocene. From 7.3 to 4 ka, the GIA induced uplift with local rate of about 2.2 mm/a facilitated land emergence and the formation of the Järve shoal which was exposed to storms from west, south and east; from 4 to 3 ka, the shoal evolved into a sandy island with spits; between 3 and 1.5 ka, the barrier island became connected with the Saaremaa mainland while the still emerging paleospits distanced from the sea. From 1.5 ka to 1850 CE, westerly forces were cut off; cooling climate during the Little Ice Age and tree logging facilitated formation of nearshore dune belt. In the mid-20th century, a reversal in RSL occurred, as the global sea level rise exceeded the local uplift. Concurrently to the Baltic Sea winter ice extent decrease, Järve ice days have reduced by 46 % from 1750 to 2023 CE. This reduction has exposed the coast to increased wave energy and storm surges from winter storms, resulting in an approximate 85-m shoreline recession at Järve and sediment accumulation near downdrift Nasva port. • The Järve paleospit system emerged from the sea ∼4000 years ago. • The coastline prograded due to beach ridge build-up and (2.2 mm/a) postglacial uplift. • Shifts in forcing directions and character occurred due to changes in land configuration. • Rise in relative sea level and winter ice shrinkage is facilitating coastal erosion. [ABSTRACT FROM AUTHOR]
Copyright of Marine Geology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Development shifts on the emerging Järve coast (Estonia) in Late Holocene.
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  Data: This study identifies a sequence of accretional paleospits and beach ridges at the Järve coast, which developed over the past 4000 years (4 ka) mostly through coastal progradation and land emergence driven by glacial isostatic adjustment (GIA). Using optically stimulated luminescence dating, LiDAR elevation data, historical cartography, and recent instrumental metocean forcing data, we analyze the historical developments in relative sea level (RSL) and major shifts in the region's geomorphology from the Mid- to Late-Holocene. From 7.3 to 4 ka, the GIA induced uplift with local rate of about 2.2 mm/a facilitated land emergence and the formation of the Järve shoal which was exposed to storms from west, south and east; from 4 to 3 ka, the shoal evolved into a sandy island with spits; between 3 and 1.5 ka, the barrier island became connected with the Saaremaa mainland while the still emerging paleospits distanced from the sea. From 1.5 ka to 1850 CE, westerly forces were cut off; cooling climate during the Little Ice Age and tree logging facilitated formation of nearshore dune belt. In the mid-20th century, a reversal in RSL occurred, as the global sea level rise exceeded the local uplift. Concurrently to the Baltic Sea winter ice extent decrease, Järve ice days have reduced by 46 % from 1750 to 2023 CE. This reduction has exposed the coast to increased wave energy and storm surges from winter storms, resulting in an approximate 85-m shoreline recession at Järve and sediment accumulation near downdrift Nasva port. • The Järve paleospit system emerged from the sea ∼4000 years ago. • The coastline prograded due to beach ridge build-up and (2.2 mm/a) postglacial uplift. • Shifts in forcing directions and character occurred due to changes in land configuration. • Rise in relative sea level and winter ice shrinkage is facilitating coastal erosion. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Marine Geology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1016/j.margeo.2025.107478
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Optically stimulated luminescence dating
        Type: general
      – SubjectFull: Glacial isostasy
        Type: general
      – SubjectFull: Beach erosion
        Type: general
      – SubjectFull: Sea ice
        Type: general
      – SubjectFull: Little Ice Age
        Type: general
      – SubjectFull: Beach ridges
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      – SubjectFull: Geomorphology
        Type: general
      – SubjectFull: Storm surges
        Type: general
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      – TitleFull: Development shifts on the emerging Järve coast (Estonia) in Late Holocene.
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              Text: Mar2025
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