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Number of results: 78
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Abstract

During a Polish Antarctic Expedition to Dobrowolski Station the astronomic co-ordinates of a main geodetic point have been determined. The observations were performed by Kavrajski's method. In result 26 pairs of bright stars were observed. Longitude and latitude were defined with an estimated accuracy about ± 1".

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Authors and Affiliations

Jan Cisak
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Abstract

A surface gravimetric survey in Dobrowolski Station in Bunger Oasis was made. The maps of free-air anomaly, Bouguer anomaly and residual Bouguer anomaly were prepared as result of compiling the gravimetric data. An image of isoanomalies proved an occurence of gravitational disturbances in the studied area. The depth of Mohorovićić discontinuity was also defined on the ground of Woolard's theories.

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Andrzej Pachuta
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Abstract

The paper informs about a foundation of seismic observatory at Arctowski's Station in the beginning og 1978. Descriptions of the object and of registration seismic instruments are included. Conditions of registration and parameters of instruments are noted. Registration sequence of seismic tremors from March 1978 to October 1979 is described. A preliminary statistics of tremors is also announced.

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Authors and Affiliations

Tadeusz Jacek Kowalski
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Abstract

The paper presents a construction of magnetic observatory "Arctowski" on King George Island. The parameters of magnetic instruments and mean values of D, H, Z and F(T) of magnetic field are presented. Examples of registration of changes of the magnetic field are noted.

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Authors and Affiliations

Antoni Szymański
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Abstract

The paper deals with dynamics of present morphologic processes and cover deposits of nival and subnival stages in the area to the north of the Hornsund Fiord. Qualitative and quantitative parameters of the processes are described on the basis of direct measurements and radiocarbon datings. A particular attention was paid to the action of frost and gravitational processes in the specific morphoclimatic conditions of a nival landscape stage. The cover deposits are described from the point of view of their origin and physico-chemical properties. The age of the covers is defined on the ground of radiocarbon datings of fossil plants found at the nunataks for the first time in 1973. These datings enabled to distinguish the development phases of the morphogenetic processes during Late Holocene.

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Kazimierz Pękala
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Abstract

Hot point drills were carried through in the Hans Glacier (Spitsbergen). For that purpose a non-cored hot point drill of 700 wattage was constructed. It was used among others for installing the ablation-movement stakes, for hydrological observations and in the boreholes an ice temperature was controlled.

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Marek Grześ
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Abstract

A structure of recent morainic sediments, mainly of gravel — boulder fraction (15—60 mm) was studied in the extremely marginal part of the Werenskiold Glacier. The data were collected within three environments of glacial deposition i.e. supraglacial of dead glacial ice and layer of relegation ice adhering to the glacier bottom and subglacial ones. A distinct textural individuality is typical for supraglacial deposits. Arrangement and orientation of boulders coming from the basal part of a glacier as well as from the morainic subglacial sediment deposited under the active ice show many similarities. But in both latter zones as well as certain differentiation was found to be caused by morphology of the older bedrock, changes during a subglacial deposition and preliminary epigenetic changes that occur in the conditions of a subglacial regelation before a stabilization of a passive zone of subglacial permafrost.

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Authors and Affiliations

Antoni Olszewski
Jan Szupryczyński
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Abstract

Observations indicate a constantly decreasing mean age of shoal. In consecutive years of investigations a loss of older individuals was recorded. At present the catches consist of 3—14 years old fishes; 9—10 years old dominate. During the austral summer the fish most probably do not migrate. The shoal of the shelf maintains approximately constant frequency and dominance in classes of length.

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Authors and Affiliations

Krzysztof Edward Skóra
Keywords Antarctic krill
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Abstract

The method of target strength measurement adopted for the krill's target strength determination is proposed. The relation between the length of krill's individual and its target strength, obtained at the laboratory conditions, is presented.

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Authors and Affiliations

Janusz Kalinowski
Andrzej Dyka
Leszek Kilian
Keywords Antarctic fish
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Abstract

The shelf fishing grounds of Kerguelen Islands and of some neighbouring ocean shallows were studied in April 1975. The occurrence of 15 species representing 9 families was found in the catches. Detailed study of the following five species was performed: Champsocephalus gunnari, Channichthys rhinoceratus, Notothenia rossi rossi, N. squamifrons and Dissostichus eleginoides, all of potential commercial importance. The boundaries of regions with concentrations of Ch. gunnari and N. squamifrons were determined, the productive and suitable for trawling fishing grounds were localized.

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Authors and Affiliations

Wiesław Ślósarczyk
Antoni Wysokiński
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Abstract

The material obtained between 1977 and 1979 has allowed to compare body length, age and sex of South Georgia fish caught in the region of South Georgia Island. The growth rate of body length and weight of individuals have been determined. According to results the South Georgia icefish at the time of investigations did not form a homogenous, stable stock in the region of South Georgia Island.

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Authors and Affiliations

Mirosław Mucha

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