Relief and internal structure of the subaqueous sand dunes in the Vistula River mouth
Journal Title: Biuletyn Instytutu Morskiego - Year 2018, Vol 33, Issue 1
Abstract
This paper presents the results of bathymetric and seismoacoustic measurements carried out in the canal of the Vistula River mouth (pol. Przekop Wisły). The surveys were conducted with the use of a multibeam echosounder and a parametric sub-bottom profiler. It made it possible to obtain a high resolution bottom morphology measurement, and to identify and characterize an internal structure of subaqueous bedforms. Presence of multiple series of small to large dunes, with their length ranging from 5 up to 55 m and height from 0.1 up to 1.5 m, was established. They were composed mainly of poorly graded medium-grained sands. The nature of the sediment graining was relatively uniform. Significant diversity in terms of the formation sizes was observed, and itwas only loosely dependent on their depth and location within individual relief units. Collateral medium and small formations were found everywhere among the large formations. The bedforms consisted of well-developed steep cross-coset stratification structure. It has been ascertained that the cross-coset thickness of this formation was greater (or equal) than its height. The scope of this work is to identify the relief and structure of subaqueous dunes for the purpose of the assessment of flow properties and bottom conditions in both recent and palaeoenvironments. The obtained results are crucial for determining the state of the Przekop Wisły canal, indicating potential limitations to unconstrained flow of spate water and ice drifting as well as navigation conditions.<br/><br/>
Authors and Affiliations
Radosław Wróblewski, Janusz Dworniczak, Stanisław Rudowski, Aliaksandr Lisimenka, Weronika Ofierska
Keywords
Related Articles
- EP ID EP412035
- DOI 10.5604/01.3001.0012.7454
- Views 89
- Downloads 0
The Vistula Canal, the state after 120 years of activity
During the catastrophic flood caused by the ice dam in 1840, a new river mouth was created. Nevertheless some series of floods were observed in the next years. In order to facilitate of river waters run-off, the artifici...
POLISH SEAPORTS IN MARKET ECONOMY
Transformation of Polish economy and of its environment, especially in countries of Central and East Europe, has far reaching consequences for the national economy, foreign trade and connections with international hinter...
Local Ports as a Chance for Development of the Polish Coastal Areas. Transportation Conditions
With the exceptions of the cities of Gdańsk, Gdynia, Szczecin and Świnoujście, Polish coastal areas belong to poorly developed regions of the country. To change this situation should be an important goal of the Polish ec...
SOME CHARACTERISTICS OF FINE STRUCTURE AND MICROSTRUCTURE OF BALTIC SEA WATERS
It is generolly agreed that fine structure and micrrutructure are usual~v beyond the resolution of numerical models. Nevertheless, con-esponding processes have a consideroble irifluence on water dynamics and exchanges in...
BALTIC SEA EXPERIMENT (BALTEX)