English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The Baltic Sea and Kattegat are connected via three straits: Storebælt, Lillebælt and Øresund (Fig. 1). Øresund is the shallowest with a threshold around 7 m deep and increasing water depths to the north (Fig. 2). In the early Holocene, global sea-level rise led to reflooding of Øresund. It started in northern Øresund which was transformed into a fjord. However, so far the timing of the transgression has not been well determined, but sediment cores collected north of the threshold, at water depths of 12 to 20 m, and a new series of radiocarbon ages help to constrain this. As the relative sea level continued to rise, the threshold in Øresund was also flooded, and Øresund became a strait. In mid-Holocene time, the relative sea level rose until it was 4–5 m higher than at present, and low-lying areas around Øresund became small fjords. During the late Holocene, the relative sea level fell again. Part of the data set discussed here was presented by Andreasen (2005). Active glacier ice disappeared from the region around 17 cal. ka BP (calibrated kilo-years before present; HoumarkNielsen & Kjær 2003). During deglaciation, the ice margin receded southwards and huge amounts of meltwater flowed northwards and formed deep holes and channels. Shortly after the deglaciation of the region, marine waters inundated Øresund and remains of Arctic species such as polar cod (Boreogadus saida ) and ringed seal (Phoca hispida) have been found and dated to around 16 and 17.6 cal. ka BP (Lagerlund & Houmark-Nielsen 1993). During this time, the relative sea level must have been high, reflecting the loading of the Fennoscandian Ice Sheet during the Last Glacial Maximum. Somewhat later Øresund played an important role in draining the Baltic Ice Lake, and a major delta formed north of Øresund. Radiocarbon dating of marine mollusc shells from the delta has given ages between 16.3 and 11.8 cal. ka BP. Following isostatic rebound the relative sea level fell, and major parts of Øresund became dry land with forests, lakes and peat bogs. Submarine lake and peat deposits from the Younger Dryas and the early Holocene have been reported (Jessen 1923). Several now submarine former settlements have been reported from Øresund (Fischer 1993), which can be referred to the Mesolithic based on artefacts and radiocarbon dating.

Early Holocene sea-level changes in Øresund, southern Scandinavia