Nauki Ścisłe i Nauki o Ziemi

Polish Polar Research

Zawartość

Polish Polar Research | 2017 | vol. 38 | No 1 |

Abstrakt

Eighteen sediment samples from a 36 cm long sediment core retrieved from a proglacial lake (namely P 11) situated in the Schirmacher Oasis, East Antarctica, were analysed for the study of quartz grain morphology and microtexture, along with sand percentage, to reconstruct the paleoenvironmental changes in the lake during the Holocene. The age of the core ranges from 3.3 ka BP to 13.9 ka BP. The quartz grain morphology and microtexture reveal significant evidences of glacial transport along with some eolian and aqueous activities. On the basis of predominance of these signatures and the zonation from CONISS Cluster Analysis on the percentages of characteristic grain morphology and microtextures, the entire core has been subdivided into three major zones. From the paleoenvironmental perspective, it can be concluded that there is an onset of interglacial period at the advent of Holocene (12.3 ka BP), which reigned until 5.3 ka BP and thereafter, again a glacial environment prevailed until 3.3 ka BP with some variations in-between. The results indicate probable alternative colder and less colder phases in the study area, which are also well supported by the respective sand percentages in the sediments. © 2017 Polish Academy of Sciences 2017.
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Abstrakt

This paper presents a unique case study and methodology for measurements of the bedload transport in the two, newly created troughs at the forefield of the Baranowski Glacier: Fosa and Siodło creeks. The weather conditions and the granulometric analysis are presented and discussed briefly. Rating curves for the Fosa and Siodło creeks are presented for the first time for this region. Changes of the bedload transport as well as water discharge and water velocity at both creeks are investigated. The hysteresis for the relationships between rate of bedload transport and water discharges were identified showing that for both creeks for the higher water levels a figure of eight loop may be easily recognized. Moreover, a new method for the calculation of bedload transport rate, based on the weighted arithmetic mean instead of the arithmetic mean, is proposed.
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Abstrakt

A two-year-long data set of air temperature from four different altitudes above Petuniabukta, central Spitsbergen, was analysed in order to assess the near-surface temperature lapse rates and the relative frequency of air temperature inversion occurrence. From August 2013 to July 2015, air temperatures at adjacent altitudes in Petuniabukta were strongly correlated. The near-surface lapse rates in all three layers differed significantly both from the average lapse rate in the international standard atmosphere (0.65°C 100 m-1) and the lapse rate calculated by linear regression. A pronounced annual cycle was detected in the lowermost air layer (from 23 to 136 m a.s.l.) with a variable near-surface lapse rate in the winter months, while an annual cycle was not apparent in the air layers above 136 m a.s.l. The lowermost layer was also characterized by a notable daily cycle in near-surface lapse rate in spring and autumn. Air temperature inversions occurred in up to 80% of the study period in the air layer below 136 m a.s.l., with the relative frequency being much lower in the other two air layers. The air temperature inversions lasted as long as 139 hours. A case study revealed that one of the strongest air temperature inversions was connected to an area of lower pressure gradients at the 850-hPa pressure level.
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Abstrakt

This article presents the results of observations of selected fluxes of the radiation balance in north-western Spitsbergen in the years from 2010 to 2014. Measurements were taken in Ny-Ålesund and in the area of Kaffiøyra, on different surface types occurring in the Polar zone: moraine, tundra, snow and ice. Substantial differences in the radiation balance among the various types of surface were observed. The observations carried out in the summer seasons of 2010-2014 in the area of Kaffiøyra demonstrated that the considerable reflection of solar radiation on the Waldemar Glacier (albedo 55%) resulted in a smaller solar energy net income. During the polar day, a diurnal course of the components of the radiation balance was apparently related to the solar elevation angle. When the sun was low over the horizon, the radiation balance became negative, especially on the glacier. Diurnal, annual and multi-annual variations in the radiation balance have a significant influence on the functioning of the environment in polar conditions.
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Abstrakt

The embryology of three polar flowering plants of the family Caryophyllaceae was studied using the methods and techniques of the light, normal and fluorescence microscopes, and the electron microscopes, scanning and transmission. The analyzed species were Colobanthus quitensis of West Antarctic (King George Island, South Shetlands Islands) as well as Cerastium alpinum and Silene involucrata of the Arctic (Spitsbergen, Svalbard). In all evaluated species, flowering responses were adapted to the short Arctic and Australian summer, and adaptations to autogamy and anemogamy were also observed. The microsporangia of the analyzed plants produced small numbers of microspore mother cells that were differentiated into a dozen or dozens of trinucleate pollen grains. The majority of mature pollen grains remained inside microsporangia and germinated in the thecae. The monosporous Polygonum type (the most common type in angiosperms) of embryo sac development was observed in the studied species. The egg apparatus had an egg cell and two synergids with typical polarization. A well-developed filiform apparatus was differentiated in the micropylar end of the synergids. In mature diaspores of the analyzed plants of the family Caryophyllaceae, a large and peripherally located embryo was, in most part, adjacent to perisperm cells filled with reserve substances, whereas the radicle was surrounded by micropylar endosperm composed of a single layer of cells with thick, intensely stained cytoplasm, organelles and reserve substances. The testae of the analyzed plants were characterized by species-specific primary and secondary sculpture, and they contained large amounts of osmophilic material with varied density. Seeds of C. quitensis, C. alpinum and S. involucrata are very small, light and compact shaped.
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Redakcja

Editors-in-Chief

Magdalena BŁAŻEWICZ (Life Sciences), University of Łódź, Poland
e-mail: magdalena.blazewicz@biol.uni.lodz.pl
Wojciech MAJEWSKI (Geosciences), Institute of Paleobiology PAS, Poland
e-mail: wmaj@twarda.pan.pl

Associate Editors
Krzysztof HRYNIEWICZ (Warszawa),
e-mail:krzyszth@twarda.pan.pl
Piotr JADWISZCZAK (Białystok),
e-mail: piotrj@uwb.edu.pl
Piotr Pabis (Łódź),
e-mail: cataclysta@wp.pl
Krzysztof Jażdżewski (Łódź),
e-mail: krzysztof.jazdzewski@biol.uni.lodz.pl

Editorial Advisory Board


Krzysztof BIRKENMAJER (Kraków),

Angelika BRANDT (Hamburg),

Claude DE BROYER (Bruxelles),

Peter CONVEY (Cambridge, UK),

J. Alistair CRAME (Cambridge, UK),

Rodney M. FELDMANN (Kent, OH),

Jane E. FRANCIS (Cambridge, UK),

Andrzej GAŹDZICKI (Warszawa)

Marek GRAD (Warszawa),

Aleksander GUTERCH (Warszawa),

Jacek JANIA (Sosnowiec),

Jiří KOMÁREK (Třeboň),

Wiesława KRAWCZYK (Sosnowiec),

German L. LEITCHENKOV (Sankt Petersburg),

Jerónimo LÓPEZ-MARTINEZ (Madrid),

Sergio A. MARENSSI (Buenos Aires),

Jerzy NAWROCKI (Warszawa),

Ryszard OCHYRA (Kraków),

Maria OLECH (Kraków) - President,

Sandra PASSCHIER (Montclair, NJ),

Jan PAWŁOWSKI (Genève),

Gerhard SCHMIEDL (Hamburg),

Jacek SICIŃSKI (Łódź),

Michael STODDART (Hobart),

Witold SZCZUCIŃSKI (Poznań),

Andrzej TATUR (Warszawa),

Wim VADER (Tromsø),

Tony R. WALKER (Halifax, Nova Scotia),

Jan Marcin WĘSŁAWSKI (Sopot)

Technical Editors
Dom Wydawniczy ELIPSA, ul. Inflancka 15/198, 00-189 Warszawa, tel./fax 22 635 03 01, 22 635 17 85

 

Kontakt

Geosciences
Wojciech MAJEWSKI
e-mail: wmaj@twarda.pan.pl
phone: (48 22) 697 88 53

Instytut Paleobiologii
Polska Akademia Nauk
ul. Twarda 51/55
00-818 Warszawa, POLAND

Life Sciences
Magdalena BŁAŻEWICZ
e-mail: magdalena.blazewicz@biol.uni.lodz.pl
phone: (48 22) 635 42 97

Zakład Biologii Polarnej i Oceanobiologii Uniwersytet Łódzki
ul. S. Banacha 12/16
90-237 Łódź, POLAND

Instrukcje dla autorów

Instructions for authors

The quarterly Polish Polar Research invites original scientific papers, dealing with all aspects of polar research. The journal aims to provide a forum for publication of high quality research papers, which are of international interest.

Articles must be written in English. Authors are requested to have their manuscript read by a person fluent in English before submission. They should be not longer than 30 typescript pages, including tables, figures and references. All papers are peer-reviewed. With the submitted manuscript authors should provide the names, addresses and e-mail addresses of three suggested reviewers.

Submission of an article implies that the work described has not been published previously nor is under consideration by another journal.

The contribution should be submitted as Word file. It should be prepared in single- column double-spaced format and 25 mm margins. Consult a recent issue of the journal for layout and conventions (journals.pan.pl/ppr). Prepare figures and tables as separate files. For computer-generated graphics, editor Corel Draw is preferred. Line art images should be scanned and saved as bitmap (black and white) images at a resolution of 600–1200 dpi and tightly cropped. Computer versions of the photographs should be saved in TIFF format of at least 400 dpi (non-interpolated). Maximal publication size of illustrations is 126 × 196 mm. Limited number of color reproductions in print is fee of charge. Color artwork in PDF is free of charge.

Title should be concise and informative, no longer than 15 words. Abstract should have no more than 250 words. The authors are requested to supply up to 5 keywords. The references should be arranged alphabetically and chronologically. Journal names should not be abbreviated. Please, ensure that every reference cited in the text is also present in the reference list and vice versa. Responsibility for the accuracy of bibliographic citations lies entirely with the authors. References in the text to papers should consist of the surname of the author(s) followed by the year of publication. More than two authors should be cited with the first author’s surname, followed by et al. (Dingle et al. 1998) but in full in the References.

 

Examples:
ANDERSON J.B. 1999. Antarctic Marine Geology. Cambridge University Press, Cambridge: 289 pp.
BIRKENMAJER K. 1991. Tertiary glaciation in the South Shetland Islands, West Antarctica: evaluation of data. In: M.R.A. Thomson, J.A. Crame and J.W. Thomson (eds) Geological Evolution of Antarctica. Cambridge University Press, Cambridge: 629–632.
DINGLE S.A., MARENSSI S.A. and LAVELLE M. 1998. High latitude Eocene climate deterioration: evidence from the northern Antarctic Peninsula. Journal of South American Earth Sciences 11: 571–579.
SEDOV R.V. 1997. Glaciers of the Chukotka. Materialy Glyatsiologicheskikh Issledovaniy 82: 213–217 (in Russian).
SOBOTA I. and GRZEŚ M. 2006. Characteristic of snow cover on Kaffi oyra’s glaciers, NW Spitsbergen in 2005. Problemy Klimatologii Polarnej 16: 147–159 (in Polish).

The journal does not have article processing charges (APCs) nor article submission charges.

Twenty-five reprints of each article published are supplied free of charge. Additional charged reprints can be ordered.

 

Please submit your manuscripts to Polish Polar Research via email to Editors-in-Chief:

Magdalena BŁAŻEWICZ (Life Sciences) magdalena.blazewicz@biol.uni.lodz.pl

Wojciech MAJEWSKI (Geosciences) wmaj@twarda.pan.pl

 

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Technical Editors

Dom Wydawniczy ELIPSA, ul. Inflancka 15/198, 00-189 Warszawa, tel./fax 22 635 03 01, 22 635 17 85

 

Contact:

 

Geosciences

Wojciech MAJEWSKI

e-mail: wmaj@twarda.pan.pl

phone: (48 22) 697 88 53

Instytut Paleobiologii

Polska Akademia Nauk

ul. Twarda 51/55

00-818 Warszawa, POLAND

 

Life Sciences

Magdalena BŁAŻEWICZ

e-mail: magdalena.blazewicz@biol.uni.lodz.pl

phone: (48 22) 635 42 97

Zakład Biologii Polarnej i Oceanobiologii Uniwersytet Łódzki

ul. S. Banacha 12/16

90-237 Łódź, POLAND

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