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Nowy Targ, Poland

Holm G.,Swedish Geotechnical Institute | Svedberg B.,Lulea University of Technology | Rogbeck Y.,Swedish Geotechnical Institute | Lundberg K.,Lulea University of Technology | And 3 more authors.
Geotechnical Engineering for Infrastructure and Development - Proceedings of the XVI European Conference on Soil Mechanics and Geotechnical Engineering, ECSMGE 2015 | Year: 2015

Sea transport is increasing due to its environmental and economic benefits. The related expansion of ports and the development towards longer, wider and more deep-draught ships cause a huge need for dredging of sediments in fairways and ports. A large volume of these sediments are contaminated with heavy metals and organic contaminants. Millions of m3 of these sediments have to be dredged and handled in the coming years according to studies performed by the SMOCS/PortInfra network. The SMOCS project (Sustainable Management of Contaminated Sediments) within the Baltic Sea Region Programme 2007-2013 has developed a guideline on management of contaminated sediments based on a sustainability approach. This paper deals with important considerations and key experiences in the different phases in a project from characterisation of sediments to be dredged, basic risk assessment, feasibility study and selection of handling options, planning and permitting, execution incl. detailed design considerations and field test and serviceability stage incl. monitoring. The stabilization/solidification technology has been applied implying the beneficial use of such treated dredged contaminated sediments in port constructions reducing the use of natural resources. © The authors and ICE Publishing: All rights reserved, 2015.

Dzierzbicka-Glowacka L.,Polish Academy of Sciences | Kalarus M.,University of Gdansk | Musialik-Koszarowska M.,University of Gdansk | Lemieszek A.,Maritime Institute | Zmijewska M.I.,University of Gdansk
Oceanologia | Year: 2015

This manuscript is a continuation of the results presented in the earlier work by Dzierzbicka-Głowacka et al. (2013). Major purpose of this study is to characterize population dynamics of three major Baltic calanoid copepod species (Acartia spp., Temora longicornis and Pseudocalanus sp.) in the Gulf of Gdańsk during the years 2006-2007. This paper focuses mostly on biomass estimation, production and mortality rates. All three species had the highest observed biomass in summer 2007 and it was 12.62, 9.16 and 0.80 mg C m-3 for Acartia spp., T. longicornis and Pseudocalanus sp., respectively, while highest daily production rates for those species were 28.22, 18.47, 1.34 mg C m-2, all recorded in summer 2007. Mortality rates were calculated for all copepodite stages of selected species, and in most cases highest values were observed during summer seasons. © 2014 Institute of Oceanology of the Polish Academy of Sciences. Production and hosting by Elsevier Urban and Partner Sp. z o.o. All rights reserved.

Saniewska D.,University of Gdansk | Beldowska M.,University of Gdansk | Beldowski J.,Polish Academy of Sciences | Saniewski M.,National Water Research Institute | And 5 more authors.
Environmental Monitoring and Assessment | Year: 2014

In Mediterranean seas and coastal zones, rivers can be the main source of mercury (Hg). Catchment management therefore affects the load of Hg reaching the sea with surface runoff. The major freshwater inflows to the Baltic Sea consist of large rivers. However, their systems are complex and identification of factors affecting the outflow of Hg from its catchments is difficult. For this reason, a study into the impact of watershed land use and season on mercury biogeochemistry and transport in rivers was performed along two small rivers which may be considered typical of the southern Baltic region. Neither of these rivers are currently impacted by industrial effluents, thus allowing assessment of the influence of catchment terrain and season on Hg geochemistry. The study was performed between June 2008 and May 2009 at 13 sampling points situated at different terrain types within the catchments (forest, wetland, agriculture and urban). Hg analyses were conducted by CVAFS. Arable land erosion was found to be an important source of Hg to the aquatic system, similar to urban areas. Furthermore, inflows of untreated storm water discharge resulted in a fivefold increase of Hg concentration in the rivers. The highest Hg concentration in the urban runoff was observed with the greatest amount of precipitation during summer. Moderate rainfalls enhance the inflow of bioavailable dissolved mercury into water bodies. Despite the lack of industrial effluents entering the rivers directly, the sub-catchments with anthropogenic land use were important sources of Hg in the rivers. This was caused by elution of metal, deposited in soils over the past decades, into the rivers. The obtained results are especially important in the light of recent environmental conscience regulations, enforcing the decrease of pollution by Baltic countries. © 2014, The Author(s).

Figiela M.,Polish Academy of Sciences | Musialik-Koszarowska M.,University of Gdansk | Nowicki A.,Polish Academy of Sciences | Lemieszek A.,Maritime Institute | And 2 more authors.
Oceanological and Hydrobiological Studies | Year: 2016

The study presents changes in the total development time of Copepoda species, i.e. Pseudocalanus sp., Temora longicornis and Acartia spp. occurring in large numbers in the Southern Baltic Sea. The following factors were taken into account: temperature, salinity and concentration of food. The presented research involved simulations with greenhouse gas emissions scenarios A1B and B1. The analysis was performed for naupliar and copepodid stages combined together, and the results present the total development time of organisms from the naupliar stage to the adult form. The calculations were carried out using numerical methods based on the experimental data available in the literature. © 2016 Faculty of Oceanography and Geography, University of Gdañsk, Poland. All rights reserved.

Florek W.,Pomeranian University | Rudowski S.,Maritime Institute | Szefler K.,Maritime Institute
Quaestiones Geographicae | Year: 2010

Basing on results of detailed hydroacoustic research, the geological structure of the bottom to 20-22 m b.s.l. has been studied. The palaeo-Slupia palaeo-valley, buried bya thin cover of marine sands, has been recognized and determined. Some stages of valley development may be distinguished. The deposits of the oldest valley are C14 dated at ca. 21 ka BP. But in the main stage, the valley was formed by action of the subglacial and thawing glacial waters during and after the so-called Gardno Phase. Most probably this valley was connected with the Pomeranian ice margin valley. The next stages ofthe valley's development were related with changes of the palaeo-Slupia under conditionsof the Litorina transgression. The youngest palaeo-Slupia valley is, in the authors' opinion, related with a shallow, long incision, weakly marked in the sea bottom in the central part of the studied area. Field investigations were carried out by the Department ofOperational Oceanography of the Maritime Institute in Gdalsk from the r/v Dr Lubecki. A DESO 15 echosounder, Subbottom Profilers model 3010 and the X Star system were used. Eight vibrocores (core length up to 3 m) were taken from the sea bottom and three borings (10-17 m depth) were executed on the shore. Accurate positioning was obtained using the DGPS and HYDRO and Track Point Systems. All data were digitally recorded and processed.

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