Change search
ReferencesLink to record
Permanent link

Direct link
Past extreme events recorded in the internal architecture of coastal formations in the Baltic Sea Region
Show others and affiliations
Number of Authors: 12
2016 (English)In: Journal of Coastal Research, ISSN 0749-0208, E-ISSN 1551-5036, no SI 75, 775-779 p.Article in journal (Refereed) Published
Abstract [en]

The postglacial uplift and transgressive-regressive phases of the Baltic Sea have affected the formation and displacement of sandy accumulation forms in the region. The dune-ridge complexes preserve a geological record of past sea-level fluctuations, coastal evolution, and extreme events, and offer insights into major driving mechanisms. This study aims to improve methodologies for identifying different storm signatures in coastal deposits using examples from Estonia and Latvia. The paleo-beach ridges are typically covered by aeolian sand, and the inter-ridge swales are mostly filled with organic sediments. Ground-penetrating radar surveys corroborate distinct textural patterns in sand layers underneath the ridges and swales. In the ridges, sharp seaward-dipping reflections represent storm scarps. The ridge sequences without dipping reflections suggest either aeolian origin or longshore transport; smaller sandy ridges, which are buried under peat layers, reflect prolonged, calmer phases. Compound dunes with ridges in their cores indicate major coastal events or shifts in atmospheric conditions that would have exposed wide sand areas to wind and facilitated dune development. This study demonstrates that the aeolian processes and changes in storminess have played an important role in the genesis of ridge-swale complexes in the Baltic Sea Region.

Place, publisher, year, edition, pages
2016. no SI 75, 775-779 p.
Keyword [en]
Beach ridges, dunes, heavy minerals, geophysical survey, luminescence
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:su:diva-129617DOI: 10.2112/SI75-156.1ISI: 000373241300010OAI: oai:DiVA.org:su-129617DiVA: diva2:925573
Conference
14th International Coastal Symposium (ICS), Sydney, Australia, March 06-11, 2016
Available from: 2016-05-02 Created: 2016-04-26 Last updated: 2016-05-02

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Bjursäter, Stefan
By organisation
Department of Physical Geography
In the same journal
Journal of Coastal Research
Earth and Related Environmental Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 65 hits
ReferencesLink to record
Permanent link

Direct link