Relief and internal structure of the subaqueous sand dunes in the Vistula River mouth

2018 ◽  
Vol 33 (1) ◽  
pp. 22-30
Author(s):  
Radosław Wróblewski ◽  
Janusz Dworniczak ◽  
Stanisław Rudowski ◽  
Aliaksandr Lisimenka ◽  
Weronika Ofierska
Keyword(s):  
Internal Structure ◽  
Sand Dunes ◽  
River Mouth ◽  
Flow Properties ◽  
Multiple Series ◽  
Multibeam Echosounder ◽  
Vistula River ◽  
Subaqueous Dunes ◽  
Seismoacoustic Measurements ◽  
Stratification Structure

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.

scholarly journals Environmental Risk Assessment Resulting from Sediment Contamination with Perfluoroalkyl Substances

Molecules ◽  
2020 ◽  
Vol 26 (1) ◽  
pp. 116
Author(s):  
Grażyna Gałęzowska ◽  
Justyna Rogowska ◽  
Ewa Olkowska ◽  
Wojciech Ratajczyk ◽  
Lidia Wolska
Keyword(s):  
Risk Assessment ◽  
Environmental Risk ◽  
Environmental Risk Assessment ◽  
Treatment Plant ◽  
River Mouth ◽  
Ultra Performance Liquid Chromatography ◽  
Perfluoroalkyl Substances ◽  
Toxicity Tests ◽  
Aquatic Life ◽  
Vistula River

Due to wide use of perfluoroalkyl substances (PFASs) (e.g., in metal-plating, in fire-fighting foam, lubricants) and their resistance to degradation, they occur widely in the environment. The aim of this study was to estimate the environmental risk resulting from the presence of PFASs in the Gulf of Gdansk. Therefore, 17 PFASs concentrations were determined using ultra performance liquid chromatography with tandem mass spectrometry detection (UPLC-MS/MS). Additionally, sediment ecotoxicity was investigated. The results of the chemical analysis were used to asses environmental risk of PFASs. In samples collected around discharge collectors from a wastewater treatment plant and the Vistula mouth, Σ17PFASs values were 0.00403 ÷ 40.6 and 0.509 ÷ 614 ng/g d.w., respectively. In samples collected around discharge collectors, PFHxA, PFPeA, PFHpA, and PFOA were dominating, while at the Vistula River mouth, PFHxS, PFDS, and PFBS were prevalent. For most sediments, no toxic effect was observed in the toxicity tests with Heterocypris inconguens and Aliivibrio ficsheri. There was no observed correlation between the PFASs level and their ecotoxicity. Generally, the results of environmental risk assessment indicate that the PFASs would not generate high impact on the aquatic life (five water samples have shown medium risk related to PFBS and PFDoA).

Mapping the internal structure of sand dunes with GPR: A case history from the Jafurah sand sea of eastern Saudi Arabia

2008 ◽  
Vol 27 (11) ◽  
pp. 1446-1452 ◽  
Author(s):  
Ademola Q. Adetunji ◽  
Abdullatif Al-Shuhail ◽  
Gabor Korvin
Keyword(s):  
Saudi Arabia ◽  
Internal Structure ◽  
Case History ◽  
Sand Dunes

Granulometria osadów dennych kanału Przekop Wisły

2017 ◽  
Vol 32 (1) ◽  
pp. 14-20
Author(s):  
Stanisław Rudowski ◽  
Justyna Edut ◽  
Janusz Dworniczak ◽  
Radosław Wróblewski ◽  
Aliaksandr Lisimenka ◽  
...  
Keyword(s):  
River Mouth ◽  
Storage Conditions ◽  
Bottom Relief ◽  
Natural Area ◽  
Flood Prevention ◽  
Vistula River ◽  
Negative Skewness ◽  
Scale Characteristics ◽  
Sieve Analyses ◽  
And Storage

The Przekop Wisły (or the Vistula Cross-cut) is a canal created 120 years ago in the Vistula River mouth to prevent floods. In 2013/2014, 82 samples of canal sediments were collected in the course of three sessions, which were next subjected to macroscopic descriptions and sieve analyses including calculation of granulation indices expressed in the phi scale. Characteristics of granulation are presented in relation to forms of bottom relief as well as varied transport and storage conditions of individual sessions. Sediments in the canal are relatively even-sized, with coarse and/or medium-grained sands, quite well-sorted, with moderately negative skewness and a leptokurtic distribution. It was demonstrated that deposition of sediments in the canal is progressing, especially in its estuarial section, which impacts significantly on its patency. Hence, it is necessary to monitor sediments in the canal in order to establish its condition and identify trends related to risks and flood prevention. The Przekop Wisły canal constitutes a natural area of a straight channel river, and studies of its sediments may be considered an important model of fluvial processes.

scholarly journals Partition of pentachlorophenol (PCP) into particulate and dissolved phases in the waters of the Vistula River mouth at the Gulf of Gdańsk

2016 ◽  
Vol 45 (2) ◽  
Author(s):  
Marta E. Kobusińska ◽  
Maria Witt ◽  
Krzysztof Lewandowski ◽  
Elżbieta Niemirycz
Keyword(s):  
Organic Contaminants ◽  
Temporal Trends ◽  
River Mouth ◽  
Gulf Of Gdańsk ◽  
Factors Affecting ◽  
Hydrological Characteristics ◽  
Vistula River ◽  
Gulf Of Gdansk ◽  
Relative Solubility ◽  
Spm Concentration

AbstractThe Vistula River plays an important role in the supply of autochthonous and allochthonous material to the Gulf of Gdansk. The suspended particulate matter (SPM) of fluvial origin is considered to constitute a specific sorbent for halogenated organic compounds due to their lipophilic characteristics and relative solubility. Because there are many factors affecting the input of SPM into the estuarine environment of the Gulf of Gdansk, e.g. hydrological characteristics of the Vistula River, it became necessary to verify whether the same processes may affect a discharge of organic contaminants. The study presents an approach to the assessment of temporal trends in SPM concentration in the Vistula River discharged into the Gulf of Gdansk as well as the analysis of pentachlorophenol (PCP), a commonly used agricultural biocide, a precursor of dioxins in either dissolved or particulate phases in the river (the Vistula River) and sea waters (the Gulf of Gdansk). The study revealed that the hydrological characteristics appear to influence a load of SPM. However, the discharge of PCP is additionally related to the environmental conditions, physicochemical properties of the compound and the sorbent, affecting the partitioning of PCP into dissolved and particulate phases.

Diet of the twaite shad Alosa fallax (Lacépède, 1803) (Clupeidae) in the Gulf of Gdansk, the Baltic Sea

2012 ◽  
Vol 41 (3) ◽  
Author(s):  
Michał Skóra ◽  
Mariusz Sapota ◽  
Krzysztof Skóra ◽  
Anna Pawelec
Keyword(s):  
River Mouth ◽  
Gulf Of Gdańsk ◽  
The Baltic Sea ◽  
Sprattus Sprattus ◽  
Vistula River ◽  
Mysis Mixta ◽  
Twaite Shad ◽  
Alosa Fallax ◽  
Gulf Of Gdansk ◽  
The Baltic

AbstractTwaite shad Alosa fallax (12–48 cm total length) from the Gulf of Gdansk feed on Mysids: Mysis mixta, Neomysis integer, and fish: Sprattus sprattus, Osmerus eperlanus, and Pomatoschistus sp.. In the stomachs of A. fallax there also occur Hydrobia sp., Diptera and small stones, particles of wood and plastic. The food of inshore twaite shad measured from 12 to 21 cm centered on M. mixta. Fish are the main prey for A. fallax from the class length 22–31 cm from the Vistula River mouth and for all shads longer than 32 cm.

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