Rapid sea-level rise during the first phase of the Littorina transgression in the western Baltic Sea

Stattegger, Karl; Leszczyńska, Karolina

doi:10.1016/j.oceano.2022.05.001

Cited by 7 publications

(8 citation statements)

References 46 publications

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“…The land has a much slower response to reaching equilibrium than the ocean. The flooding peaked during the Littorina transgression, which occurred approximately 8000 years ago [20]. This event is responsible for the lower marine sand layer observed in drilling B2.…”

Section: Study Area and Geological Settingmentioning

confidence: 99%

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Short-Term Ocean Rise Effects on Shallow Groundwater in Coastal Areas: A Case Study in Juelsminde, Denmark

Forchhammer Mathiasen,

Padkær Haugan,

Raaschou Andersen

et al. 2023

Water

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Coastal areas situated at lower elevations are becoming more vulnerable to flooding as a result of the accelerating rise in the global sea level. As the sea level rises, so does the groundwater. Barriers designed to shield against marine flooding do not provide protection against flooding caused by rising groundwater. Despite the increasing threat of groundwater flooding, there is limited knowledge about the relationship between sea level rise and groundwater fluctuations. This hinders the ability to adequately consider sea level rise-induced groundwater flooding in adaptation initiatives. This study aims to investigate how local groundwater in Juelsminde, Denmark, responds to changes in sea level and to evaluate the predictability of these changes using a machine learning model. The influence of the sea on the shallow groundwater level was investigated using six groundwater loggers located between 45 and 210 m from the coast. An initial manual analysis of the data revealed a systematic delay in the rise of water levels from the coast to inland areas, with a delay of approximately 15–17 h per 50 m of distance. Subsequently, a support vector regression model was used to predict the groundwater level 24 h into the future. This study shows how the groundwater level in Juelsminde is affected by sea level fluctuations. The results suggest a need for increased emphasis on this topic.

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Section: Study Area and Geological Settingmentioning

confidence: 99%

“…They are located along coast-perpendicular profiles, with distances from the coastline between 45 and 210 m (Figure 3). Littorina transgression, which occurred approximately 8000 years ago [20]. This event is responsible for the lower marine sand layer observed in drilling B2.…”

Section: Datamentioning

confidence: 99%

Short-Term Ocean Rise Effects on Shallow Groundwater in Coastal Areas: A Case Study in Juelsminde, Denmark

Forchhammer Mathiasen,

Padkær Haugan,

Raaschou Andersen

et al. 2023

Water

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“…There is room for a lot of variability in the data from the Femern Belt/southern Lolland, but we do not see evidence of such a rapid sea‐level jump. The data used by Stattegger and Leszczyńska (2022) came from a large region with different glacio‐isostatic uplift histories. We believe it is important to construct shore‐level curves from small areas without differential glacio‐isostatic adjustment.…”

Section: Shore‐level Changesmentioning

confidence: 99%

“…The coarse-grained sandy layers or shell-rich layers in fine-grained gyttja most likely reflect storm events. Stattegger and Leszczyńska (2022) reported on a sea-level jump of 18 m between 8570 and 8000 cal a BP in the western Baltic Sea. There is room for a lot of variability in the data from the Femern Belt/southern Lolland, but we do not see evidence of such a rapid sea-level jump.…”

Section: Shore-level Changesmentioning

confidence: 99%

Holocene shore‐level changes, southern Lolland and the Femern Belt, Denmark

Bennike

Philippsen

Groß

et al. 2022

J Quaternary Science

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We propose a new shore‐level displacement curve for southern Lolland and the Femern Belt in south‐eastern Denmark based on 94 new and four published radiocarbon ages of organic material and shells of marine molluscs. Mires existed in the deeper parts of the Femern Belt during the Early Holocene, and a large lake formed as the water level gradually rose. The lake phase was followed first by a brackish‐water phase from c. 8500 cal a bp and by a marine phase after c. 7800 cal a bp when the relative sea level was ~8 m lower than at present. Over the past 6500 years the sea level has gradually risen by ~2 m and reached its highest level in recent times. There are no indications of a higher than present sea level in the area and no indications of 1–2 m sea‐level oscillations as reported from other parts of the region. The relative sea‐level curve for southern Lolland differs from relative sea‐level curves from northern parts of Denmark, which are more influenced by glacio‐isostatic uplift. Southern Lolland has been uplifted by 4–5 m over the last 8000 years, whereas the Limfjord region in northern Denmark has been uplifted by around 12 m during the same period.

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“…As a result, rapid sea-level fluctuations occurred along the present-day coast of the Baltic Sea ( 5 ). Stattegger and Leszczyńska ( 6 ) provide evidence that the sea level in the Western Baltic Sea rose from −28 to −10 m below the mean relative sea level during the Littorina transgression between 8.57 and 8.0 ka B.P. Schwarzer et al ( 7 ) report on a sea-level rise from −40 to −20 m between 13.3 and 12.7 ka B.P.…”

mentioning

confidence: 99%

A submerged Stone Age hunting architecture from the Western Baltic Sea

Geersen,

Bradtmöller,

Schneider von Deimling

et al. 2024

Proc. Natl. Acad. Sci. U.S.A.

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The Baltic Sea basins, some of which only submerged in the mid-Holocene, preserve Stone Age structures that did not survive on land. Yet, the discovery of these features is challenging and requires cross-disciplinary approaches between archeology and marine geosciences. Here, we combine shipborne and autonomousunderwater vehicle hydroacoustic data with up to a centimeter range resolution, sedimentological samples, and optical images to explore a Stone Age megastructure located in 21 m water depth in the Bay of Mecklenburg, Germany. The structure is made of 1,673 individual stones which are usually less than 1 m in height, placed side by side over a distance of 971 m in a way that argues against a natural origin by glacial transport or ice push ridges. Running adjacent to the sunken shoreline of a paleolake (or bog), whose youngest phase was dated to 9,143 ±36 ka B.P., the stonewall was likely used for hunting the Eurasian reindeer (Rangifer tarandus) during the Younger Dryas or early Pre-Boreal. It was built by hunter–gatherer groups that roamed the region after the retreat of the Weichselian Ice Sheet. Comparable Stone Age megastructures have become known worldwide in recent times but are almost unknown in Europe. The site represents one of the oldest documented man-made hunting structures on Earth, and ranges among the largest known Stone Age structure in Europe. It will become important for understanding subsistence strategies, mobility patterns, and inspire discussions concerning the territorial development in the Western Baltic Sea region.

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Rapid sea-level rise during the first phase of the Littorina transgression in the western Baltic Sea

Cited by 7 publications

References 46 publications

Short-Term Ocean Rise Effects on Shallow Groundwater in Coastal Areas: A Case Study in Juelsminde, Denmark

Short-Term Ocean Rise Effects on Shallow Groundwater in Coastal Areas: A Case Study in Juelsminde, Denmark

Holocene shore‐level changes, southern Lolland and the Femern Belt, Denmark

A submerged Stone Age hunting architecture from the Western Baltic Sea

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