Institute of Oceanology PAS,
Oceanologia No. 37 (1) / 95
Contents
Papers
Reviews
Dissertations
Papers
Sergey V. Semowski, Bogdan Wozniak
Model of the annual phytoplankton cycle in the marine ecosystem-
assimilation of monthly satelite chrolophyll data for the North
Atlantic and Baltic
Manuscript received November 23, 1994, in final form January 25, 1995
Abstract
An annual-cycle model for the phytoplankton-zooplankton-nutrients ecosystem is
presented for the North Atlantic and Baltic Sea. Satellite-derived surface
chlorophyll data assimilation in the ecosystem model are discussed, and a number
of methods of fitting model dynamics to the data are proposed. Statistical
analysis of simulation results yields the main types of annual chlorophyll and
primary production variability.
Jolanta Kusmierczyk-Michulec
A semi-empirical expression for the solar spectral diffuse irradiance
at the sea surface
Manuscript received November 7, 1994, in final form January 12, 1995
Abstract
A simple, semi-empirical expression, valid in the visible spectrum for
calculations of the solar diffuse irradiance, is presented. This relation
is based on experimental data collected on cloudless days in 1993 and 1994
over the southern Baltic Sea. In order to illustrate the accuracy of the
proposed formula, the aerosol optical thickness is calculated. The
semi-empirical diffuse irradiance and the aerosol optical thickness.
Jan Piechura, Waldemar Walczowski
The Arctic Front: structure and dynamics
Manuscript received January 4, 1995, in final form February 2, 1995
Abstract
During summer expeditions of r/v "Oceania" to the Arctic Seas, the Arctic
Front has been crossed and investigated each time since 1987. The 1993 cruise
initiated more detailed investigations of this phenomenon. In the area
delimited by longitudes 2o41'W and 2o05'E and
lattitudes 70o54'N and 72o32'N, five CTD transects were
done with the CTD cast every 5 or 2 nm on each transect.
The location and direction of the front have been defined. The geostrophic component of the general circulation shows good agreement with the earlier
data: a strong current (up to 40 cm s-1) on the Atlantic side of
the front, about zero velocity in the middle and weak a current (5-10 cm
s-1) on the Arctic side of the front. The steepest horizontal
gradients were ca 0.5oC km-1 (temperature) and
ca 0.04 psu km-1 (salinity). The data reveal the complicated
structure of the front with its intrusions, meanders and gyres.
Maciej Matciak, Jacek Nowacki
The Vistula river discharge front-surface observations
Grazyna Kowalewska
Metalloporphyrins in recent sediments of the Baltic Sea
Amany Mohamed Haroon, Anna Szaniawska, Waldemar Surosz
Changes in heavy metal accumulation in Enteromorpha spp. from
the Gulf of Gdansk
Aldona Dobrzycka, Anna Szaniawska
The effect of salinity on osmoregulation in Corophium volutator (Pallas)
and Saduria entomon (Linnaeus) from the Gulf of Gdansk
Marcin Plinski
Phytoplankton of the Gulf of Gdansk in 1992 and 1993
Reviews
Andrzej Icha
The theory of turbulence in stratified media (review by Czeslaw Druet)
Dissertations
Slawomir Kwasniewski
Mesozooplankton distribution in the epipelagial of the Norwegian-Barents
Seas boundary in summer (review by Jan Marcin Weslawski)
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Marcin Wichorowski <wichor@iopan.gda.pl.pl>, 26.09.1995