Oceanologia No. 46 (3) / 04
Contents
Invited paper
Papers
-
Laser ablation studies of solid aerosols on the Baltic coast:
Robert Jaworski, Tomasz Wróblewski, Erwin Hoffmann
-
Preliminary results of lidar based studies of the aerosol vertical
distribution in the lower troposphere over urban coastal areas:
Marek Hałas, Zdzisław Błaszczak, Józef Grabowski,
Alexandros Papayannis, Tymon Zieliński
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A laboratory study of breaking waves:
Jarosław Tęgowski
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Attenuation of wave-induced groundwater pressure in shallow water. Part 1:
Stanisław R. Massel, Anna Przyborska, Michał Przyborski
-
AChE levels in mussels and fish collected off Lithuania
and Poland (southern Baltic):
Justyna Kopecka, Aleksandras Rybakowas, Janina Baršienė, Janusz Pempkowiak
Communications
Invited paper
The distribution and tapping tidal energy
Oceanologia 2004, 46(3), 291-331
Zygmunt Kowalik
Institute of Marine Science, University of Alaska,
Fairbanks, AK, 99775, USA;
e-mail: ffzk@ims.uaf.edu
Keywords: tides, extreme tides, energy conservation, tidal power plants
Manuscript received 17 June 2004, reviewed 30 July 2004,
accepted 19 August 2004.
Abstract
Tidal power along tidal shores has been used for centuries to run
small tidal mills. Generating electricity by tapping tidal power proved
to be very successful only in the last century through the tidal power
plant constructed in 1967 in La Rance, France. This used a large barrier
to generate the sea level head necessary for driving turbines.
Construction of such plants evolved very slowly because of prohibitive
costs and concerns about the environmental impact. Developments in the
construction of small, efficient and inexpensive underwater turbines
admit the possibility of small scale operations that will use local
tidal currents to bring electricity to remote locations.
Since the generation of such electricity is concerned with the tidal
energy in local water bodies, it is important to understand the
site-specific energy balance, i.e., the energy flowing in through open
boundaries, and the energy generated and dissipated within the local
domain. The question is how to tap the tidal energy while keeping
possible changes in the present tidal regimes to a minimum.
The older approach of constructing barrages may still be
quite useful in some locations. The basics of such tidal power plants
constructed in a small bay are analyzed in order to understand
the principal parameter for tidal plant evaluation, i.e., the power produced.
The new approach is to place turbines - devices similar to windmills
- in the pathway of tidal currents. Theoretically, the amount of
power available by such turbines for electricity generation is proportional
to the water density and velocity cubed of the tidal flow.
The naturally dissipated tidal power due to bottom friction
forces is also proportional to the cube of the velocity. Because of
this similarity, the exploitation of tidal energy can be directed to
reinvesting the naturally dissipated power into tidal power
for the generation of electricity. This approach to tidal power
exploitation is better tuned towards preservation of the natural
tidal regime. To answer the many questions related to tidal regime changes,
it is important to develop a new branch of tidal dynamics which will
help to better understand the interaction between a natural tidal
regime and future changes caused by tapping into tidal energy.
Papers
Laser ablation studies of solid aerosols on the Baltic coast
Oceanologia 2004, 46(3), 333-345
Robert Jaworski1, 2,*, Tomasz Wróblewski1, Erwin Hoffmann2
1Institute of Physics, Pomeranian Pedagogical Academy,
Arciszewskiego 22b, PL-76-200 Słupsk, Poland;
e-mail: robert@if.pap.edu.pl
2Institute of Spectrochemistry and Applied Spectroscopy,
Albert-Einstein-Strasse 9, D-12489 Berlin, Germany
*corresponding author
Keywords:
cascade impactor, particle size distribution, LA ICP-MS
Manuscript received 17 March 2004, reviewed 21 June 2004, accepted 5 July 2004.
Abstract
A Berner cascade impactor was used for the separation of solid urban aerosols in two localities of the Baltic coastal macro-region - Słupsk and Hel - in different seasons and weathers. Ten ranges of aerodynamic diameters between 0.009 and 8.11 µm were used. The elementary composition for each diameter was obtained in a complex procedure consisting of laser ablation of deposits, then their successive ionization in an inductively coupled plasma generator, and finally, mass selection in a quadrupole spectrometer. Despite its complexity, the chemical element analysis method proved to be versatile, allowing the identification air pollution from natural and industrial sources, and road traffic.
Preliminary results of lidar based studies of the aerosol vertical
distribution in the lower troposphere over urban coastal areas
Oceanologia 2004, 46(3), 347-364
Marek Hałas1,
Zdzisław Błaszczak1,
Józef Grabowski2,
Alexandros Papayannis3,
Tymon Zieliński4
1Optics Division,
Faculty of Physics, A. Mickiewicz University,
Umultowska 85, PL-60-614 Poznań, Poland;
e-mail: halas@amu.edu.pl
2Institute of Physics, Technical University,
Nieszawska 13a, PL-60-965 Poznań, Poland
3Department of Physics, Technical University of Athens,
Athens, Greece
4Institute of Oceanology, Polish Academy of Sciences,
Powstańców Warszawy 55, PL-81-712 Sopot, Poland
Keywords:
aerosol, vertical profile, urban area, lidar
Manuscript received 29 July 2004, reviewed 10 August 2004, accepted 16 August 2004.
Abstract
The paper reports the results of lidar measurements performed in the lower troposphere during several measurement sessions
in Athens (Greece) in 2000. For the sake of comparison, results of a similar study performed in Kołobrzeg (Poland) in 2001 are also given. These data indicate that the exhaust gases produced by motor transportation in the cities resulted
in the formation of an inversion layer. The rate of convection of the inversion layer depends on the intensity of sunlight, the strength of winds and the morphology of the land. The inversion layer reaches the highest altitudes in the middle of summer, lower in early and late summer and the lowest in autumn. Over the sea the inversion layer altitude extends to several meters, but on moving inland it rises to a few hundred meters.
A laboratory study of breaking waves
Oceanologia 2004, 46(3), 365-382
Jarosław Tęgowski
Institute of Oceanology, Polish Academy of Sciences,
Powstańców Warszawy 55, PL-81-712 Sopot, Poland;
e-mail: tegowski@iopan.gda.pl
Keywords:
breaking waves, tank experiment
Manuscript received 23 March 2004, reviewed 2 August 2004, accepted 5 August 2004.
The experiment was funded by European Commission under the "Improving Human Potential Access Infrastructures" Programme
number HPRI-CT-1999-00060.
Abstract
This paper deals with some aspects of the wave-breaking phenomenon. The objectives were to study wave-breaking criteria,
and the probability of whitecap coverage under fully controlled wave conditions. An additional task was to in vestigate the
characteristic spectral features of the noise produced by breaking waves and the acoustic energy generated during wave breaking events. A controlled experiment was carried out in the Ocean Basin Laboratory at MARINTEK, Trondheim (Norway). Waves were generated by a computer-controlled multi-flap wave maker, which reproduced a realistic pattern of the sea surface for the prescribed spectra. Using wave staff recordings and photographic techniques, correlations between the breaking parameters and the radiated acoustic emissions were established.
Attenuation of wave-induced groundwater pressure in shallow water. Part 1
Oceanologia 2004, 46(3), 383-404
Stanisław R. Massel,
Anna Przyborska,
Michał Przyborski
Institute of Oceanology, Polish Academy of Sciences,
Powstańców Warszawy 55, PL-81-712 Sopot, Poland;
e-mail: smas@iopan.gda.pl
Keywords:
surface wave, pore water pressure, sandy beach, filtration
Manuscript received 31 May 2004, reviewed 28 June 2004, accepted 5 July 2004.
Abstract
A coastal aquifer has a dynamic seaward boundary at the beach face where
physical and ecological processes are influenced by oceanic water
level fluctuations. Many basic groundwater concepts and the role of
the impact of groundwater seepage on beach ecosystems are still
poorly understood. Studies are needed to improve our understanding of
the relationships between surface and subsurface flow processes on beaches.
This is particularly helpful in clarifying the interaction of the
physical processes, biodiversity and productivity of sandy beaches,
sediment transport and coastal structure stability and modern beach
nourishment techniques. As the estimation of infiltration into beach
sand is very difficult to carry out under real sea conditions,
a control led large-scale laboratory experiment was carried out in
the Large Wave Channel in Hannover (Germany) as part of a project
supported by the European Community (contract HPRI-CT-2001-00157).
First part of the paper describes the technology applied in the
experiment and reports some preliminary results.
AChE levels in mussels and fish collected off Lithuania and Poland (southern Baltic)
Oceanologia 2004, 46(3), 405-418
Justyna Kopecka1,
Aleksandras Rybakowas2,
Janina Baršienė2,
Janusz Pempkowiak1
1Institute of Oceanology, Polish Academy of Sciences,
Powstańców Warszawy 55, PL-81-712 Sopot, Poland;
e-mail: kopecka@iopan.gda.pl
2Institute of Ecology, Vilnius University,
Akademijos 2, LT-08412 Vilnius, Lithuania
Keywords:
Blue mussels (Mytilus trossulus), flounder (Platichthys flesus), Acetylcholinesterase (AChE), Gulf of Gdańsk, Klajpėda
Manuscript received 6 May 2004, reviewed 2 August 2004, accepted 9 August 2004.
This work was financially supported by the EU FP5 Program, Biological Effects of Environmental Pollution - BEEP. Contract No EVK3-CT-2000-00025.
Abstract
AChE activities were measured in blue mussels gills and flounder muscles samples collected off Poland - the
Gulf of Gdańsk (4 sampling stations) and off Lithuania - the Klajpėda area (3 sampling stations), in 2001 (June and October) and 2002 (April and October). The AChE activities [nmol min-1 mg protein-1] were in the range: 15-38 (in blue mussels) and 94-315 (in flounder), and agreed well with those reported for flounder in other coastal Baltic areas, and other European seas. Sources of contaminants in the study area are rather localized in the Gulf of Gdansk, (mouth of the Vistula due to runoff, ports, sewage discharges), while an accidental oil spill occurred off Lithuania,
in the course of the study (November 2001). Geographical and temporal AChE levels changes followed the contamination pattern. AChE activities and gradients in the study area are well documented and confirmed in this study. The study confirms the potential use of AChE as biomarker of organic pollution.
Communications
Influence of humic substances on results of the spectrophotometric (TPTZ) analysis of monosaccharides
Oceanologia 2004, 46(3), 419-426
Waldemar Grzybowski*,
Magdalena Dudzińska
Institute of Oceanography, University of Gdańsk,
al. Marszałka Piłsudskiego 46, PL-81-378 Gdynia, Poland;
e-mail: grzyb@panda.bg.univ.gda.pl
*corresponding author
Keywords:
monosaccharide, analysis, TPTZ, humic substances
Manuscript received 16 June 2004, reviewed 9 August 2004, accepted 19 August 2004.
Abstract
A spectrophotometric method of monosaccharide analysis was assessed with regard to its non-selectivity towards humic
substances. Analysis of model solutions showed that it responds positively to both marine and terrestrial humics.
The systematic error in monosaccharide analysis (in glucose equivalents) was 0.18-0.20 mg per 1 mg of
Aldrich humic acid and 0.11-0.12 mg per 1 mg of humic substances isolated from Gulf of Gdańsk water.
Interlaboratory analytical performance studies; a way to estimate measurement uncertainty
Oceanologia 2004, 46(3), 427-438
Elżbieta Łysiak-Pastuszak
Institute of Meteorology and Water Management, Maritime Branch,
Waszyngtona 42, PL-81-342 Gdynia, Poland;
e-mail: Elzbieta.Lysiak-Pastuszak@imgw.pl
Keywords:
quality assurance, intercomparison exercises, nutrients in seawater, measurement uncertainty
Manuscript received 25 June 2004, reviewed 6 July 2004, accepted 16 July 2004.
The article was prepared within the framework of grant 5.1 of the Polish Committee for Scientific Research.
Abstract
Comparability of data collected within collaborative programmes
became the key challenge of analytical chemistry in the 1990s,
including monitoring of the marine environment. To obtain relevant
and reliable data, the analytical process has to proceed under
a well-established Quality Assurance (QA) system with external
analytical proficiency tests as an inherent component. A programme
called Quality Assurance in Marine Monitoring in Europe (QUASIMEME)
was established in 1993 and evolved over the years as the
major provider of QA proficiency tests for nutrients, trace metals
and chlorinated organic compounds in marine environment studies.
The article presents an evaluation of results obtained in QUASIMEME
Laboratory Performance Studies by the monitoring laboratory of
the Institute of Meteorology and Water Management (Gdynia, Poland)
in exercises on nutrient determination in seawater. The measurement
uncertainty estimated from routine internal quality control measurements
and from results of analytical performance exercises is also
presented in the paper.
The size structure of the Mesodinium rubrum population in the Gdańsk Basin
Oceanologia 2004, 46(3), 439-444
Krzysztof Rychert
Sea Fisheries Institute, Kołłątaja 1, PL-81-332 Gdynia, Poland;
e-mail: krychert@mir.gdynia.pl
Keywords:
Mesodinium rubrum, size distribution
Manuscript received 7 July 2004, reviewed 4 August 2004, accepted 16 August 2004.
Abstract
The ciliate Mesodinium rubrum Lohmann 1908 (=Myrionecta rubra Jankowski 1976) is an important phototrophic organism in the Gdańsk Basin. In June 2002 the vertical distribution and size structure of the M. rubrum population were studied. Its presence was generally observed in the whole water column (one exception was the anoxic near-bottom zone in the Gdańsk Deep) at all stations studied. Maximum abundance (18300 cells dm-3) was recorded at 26 m depth at the station located in the inner Gulf of Gdańsk. Analysis of the size structure of the counted organisms demonstrated the co-existence of small and large cells of M. rubrum in the upper layer of the water column and a gradual increase with depth of the prevalence of large specimens. This shows that at least two forms of M. rubrum exist in the region studied. Deep migrations are probably undertaken only by relatively large organisms.
Development of a satellite method for Baltic ecosystem monitoring (DESAMBEM) - an ongoing project in Poland
Oceanologia 2004, 46(3), 445-455
Bogdan Woźniak1,
Adam Krężel2,
Jerzy Dera1
1Institute of Oceanology, Polish Academy of Sciences,
Powstańców Warszawy 55, PL-81-712 Sopot, Poland;
e-mail: wozniak@iopan.gda.pl
2Institute of Oceanography, University of Gdańsk,
al. Marszałka Piłsudskiego 46, PL-81-378 Gdynia, Poland
Keywords:
Baltic ecosystem, modelling primary production, remote sensing, monitoring, radiation, pigments
Manuscript received 25 June 2004, reviewed 20 July 2004, accepted 1 August 2004.
This paper was funded by the Polish State Committee for Scientific Research as part of grant No PZB-KBN 056/P04/2001.
It was presented at the US - Baltic International Symposium: "Advances in Marine Environmental Research, Monitoring & Technologies", Klaipeda, June 15-17, 2004.
Abstract
A large national project:
Development of a satellite method for Baltic ecosystem monitoring
(DESAMBEM) for creating mathematical models and a complex algorithm
for the remote sensing of the Baltic ecosystem and its primary production
is described. The final aim of the project is the development of a routine
remote sensing methodology for determining characteristics of
the Baltic ecosystem such as distribution maps of surface
temperature, water transparency, upwelling currents, phytoplankton
blooms, radiation balance, pigment concentrations and primary
production. The progress of the study and examples of results
are presented.