scholarly journals Formation factors of surface inflow to antarctic lakes of the Larsemann Hills oasis

2021 ◽  
Vol 67 (3) ◽  
pp. 293-309
Author(s):  
M. R. Kuznetsova ◽  
G. V. Priakhina ◽  
S. D. Grigoreva ◽  
E. R. Kiniabaeva
Keyword(s):  
Water Inflow ◽  
Anthropogenic Activity ◽  
Outburst Flood ◽  
Antarctic Lakes ◽  
Larsemann Hills ◽  
Antarctic Expedition ◽  
Russian Antarctic Expedition ◽  
Aerial Vehicle ◽  
Identify Formation ◽  
The Antarctic

The study aims to identify formation factors of water inflow to the Antarctic lakes of the Larsemann Hills oasis (East Antarctica). The objects of study are 11 lakes of the oasis. The analysis was performed based on the expeditionary data of the Russian Antarctic Expedition (RAE): 63rd season (23 December 2017 – 3 February 2018), 64th season (12 January 2019 – 27 February 2019), 65th season (2 November 2019 – 24 March 2020). Data of lakes water level observations, aerial photography of the unmanned aerial vehicle (UAV) and route surveys are given, the results of identifying the boundaries of the lakes catchments are presented. The factors that determine the formation of water inflow to the lakes in this region were identified based on the analysis of the materials. The most significant are the meteorological conditions, the presence of perennial snowfields and glacial areas in the catchments, and the presence of lakes that can cause outburst flood. The seasonally thawed layer also has an impact on the formation of the inflow to the lakes. The vegetation cover is not so important for inflow formation in this region due to the physical and geographical conditions. As for anthropogenic activity, it mainly affects the environmental situation of the catchments and water quality, while the anthropogenic influence on the formation of water inflow to the lakes in the oasis is limited to the territories of polar stations. The factors identified should be taken into account in the further study of hydrological processes, the creation of models that describe them, and the organization of field observations.

scholarly journals Hydrological characteristics of lakes in the eastern part of the Broknes Peninsula, Larsemann Hills, East Antarctica

2019 ◽  
Vol 59 (1) ◽  
pp. 39-48 ◽  
Author(s):  
A. S. Boronina ◽  
S. V. Popov ◽  
G. V. Pryakhina
Keyword(s):  
East Antarctica ◽  
Comprehensive Investigation ◽  
Sharp Drop ◽  
Larsemann Hills ◽  
Level Measurement ◽  
Close Proximity ◽  
Antarctic Expedition ◽  
Russian Antarctic Expedition ◽  
The Antarctic ◽  
Hydrographic Network

Broknes Peninsula (the area of the Progress station, Larsemann Hills, Princess Elisabeth Land, East Antarctica) is characterized by the presence of well developed hydrographic network consisting of reservoirs located not only in the bedrock, but also inside the glacier thickness and on its surface. As a rule, most of them are dammed by natural snowice weirs, which are often destroyed during the Antarctic summer. As a result of this process, glacial water outburst may occur. In the course of the summer season of the 63‑th Russian  Antarctic Expedition (RAE) intensive hydrological field observations were carried out for identification and comprehensive investigation of potentially outburstprone reservoirs located in close proximity to Russian and foreign stations and field bases (area of the  Progress station and the field base Law-Racovita). The works included: the organization of temporary pile and depth-stick water gauge stations, mapping positions of the shoreline of lakes (reservoirs), bathymetric surveys of them, as well as field hydro-chemical express analyses. Based on the results of the level measurement, it was found that most of the lakes of the oasis are characterized by a sharp drop in the height of the water surface level associated with the breakthroughs. In particular, the authors witnessed the breakthrough of the Discussion Lake, which occurred on January 22, 2018. This resulted in decrease of the water level by 0.95 m. Based on the data of the bathymetric surveys, the morphometric (hydrometric) characteristics of the lakes were calculated and detailed grids (regular net of rectangular matrices, in the nodes of which some effective values of the mapped values are located) were formed for the following numerical modeling of hypothetical and real breakthroughs of water bodies and construction of estimated hydrographs.

Origins of the Russian Antarctic expedition: 1819–1821

Polar Record ◽  
2012 ◽  
Vol 49 (2) ◽  
pp. 180-192 ◽  
Author(s):  
Erki Tammiksaar ◽  
Tarmo Kiik
Keyword(s):  
Russian Literature ◽  
Russian Empire ◽  
Russian Government ◽  
The Real ◽  
Antarctic Expedition ◽  
Russian Antarctic Expedition ◽  
Antarctic Continent ◽  
The Difference ◽  
The Russian Empire ◽  
The Antarctic

ABSTRACTIn 1819, the Russian government launched two expeditions: the first squadron of two ships departed to explore the southern polar areas, and the second set out for the northern polar areas. The expedition to the southern polar areas took place under the command of Fabian Gottlieb von Bellingshausen. Up to the present day, very little information is available, from the Russian literature, about the initiator and main goals of the expedition. At the same time, the travels and main results of the expedition have been widely popularised, but not necessarily accurately, in Russian as well as in English. On the basis of recently discovered documents, this article attempts to establish who the initiator of these Russian expeditions was, how the expeditions were prepared, and whether the main tasks of the expeditions were realised. The conclusion is that Jean-Baptiste Prevost de Sansac, Marquis de Traversay was the initiator of the Russian Antarctic expedition, not the Russian navigators Adam Johan von Krusenstern, Otto von Kotzebue, Gavrila A. Sarychev or Vasilii M. Golovnin as stated in Soviet publications. The real aim of the expedition was to discover the Antarctic continent which would have added glory to de Traversay as well as to Emperor Alexander I and, in a wider sense, also to the Russian empire. All dates are given according to the old style calendar. The difference with the new style calendar is 12 days.

scholarly journals MONITORING OF THE NELLA FJORD WATER-ICE ECOSYSTEM (PRUDS BAY, EAST ANTARCTIC): SEASON RAE-65

2020 ◽  
Vol 48 (2) ◽  
pp. 163-165
Author(s):  
I. A. Melnikov
Keyword(s):  
Southern Ocean ◽  
Sea Ice ◽  
East Antarctica ◽  
Water Ice ◽  
Project Assessment ◽  
Antarctic Sea Ice ◽  
Antarctic Expedition ◽  
Russian Antarctic Expedition ◽  
The Antarctic

During the seasonal work of the Russian Antarctic expedition (RAE-65), the monitoring of the water-ice ecological system was conducted in the Nella fjord (Prude Bay, East Antarctica). This monitoring is conducted annually since the IPY in 2007 in frames of the project “Assessment of the ecology of the Antarctic sea ice zone” (“Krial”) (Melnikov, 2020). The purpose of the monitoring is the assessment of the role of water-ice biota in global biosphere processes in the Southern Ocean.

Russian geographical names on the map of Аntarctica as a cultural heritage site. To the 200th anniversary of the discovery of Antarctica

2020 ◽  
Vol 957 (3) ◽  
pp. 54-64
Author(s):  
A.I. Elchaninov
Keyword(s):  
Cultural Heritage ◽  
200Th Anniversary ◽  
Heritage Site ◽  
Antarctic Expedition ◽  
Russian Antarctic Expedition ◽  
The Antarctic

The article is devoted to the discovery of the Antarctic by Russian navigators, the study, mapping and designation of its shores and adjacent islands. Russian names were given to many new found geographic features. The list of some Russian geographical names is shown on the map of Antarctica. The maps of the Bellingshausen–Lazarev sailing expedition in 1819–1821 are given; the Russian geographical names are highlighted on them. The article is also devoted to the first Russian Antarctic expedition of 1819–1821, the discovery of the Antarctic by Russian navigators F. F. Bellingshausen and M. P. Lazarev on the sloops "Vostok" and "Mirny", the study, mapping and marking of its shores and adjacent Islands. The expedition discovered 29 Islands. The discoverers assigned Russian names to many of new found geographic objects of Antarctica. These names are highlighted in the article. The following maps are presented

New insights into the origins of crustaceans of Antarctic lakes

2007 ◽  
Vol 19 (2) ◽  
pp. 157-164 ◽  
Author(s):  
John A.E. Gibson ◽  
Ian A.E. Bayly
Keyword(s):  
Direct Evidence ◽  
Calanoid Copepod ◽  
Antarctic Lakes ◽  
Larsemann Hills ◽  
Signy Island ◽  
Continental Source ◽  
The Antarctic ◽  
New Evidence ◽  
The Last Glacial Maximum ◽  
The Last Glacial

AbstractNew evidence regarding the origins of the Crustacea of Antarctic lakes is reviewed. Palaeolimnological data indicates that the cladoceran Daphniopsis studeri has been present in Lake Reid, Larsemann Hills, for over 120 000 yr. This is the first direct evidence of a continental lacustrine refugium during the last glacial maximum. There are strong indications that the calanoid copepod Boeckella poppei maintained populations over the same period in lakes of the Amery Oasis, and the rapid post-glacial colonization by this species of newly formed lakes on the Antarctic Peninsula and Signy Island argues for a local rather than an extra-continental source. Evidence for the entry of marine-derived species into the longer term fauna of the continent is also presented. It is concluded that many of the Crustacea in Antarctic lakes are likely to have had a long association with the continent.

Hydrological and hydrochemical studies in the Antarctic waters by the 57th Russian Antarctic expedition

Oceanology ◽  
2013 ◽  
Vol 53 (3) ◽  
pp. 377-380 ◽  
Author(s):  
N. N. Antipov ◽  
A. A. Artamonov ◽  
K. V. Artamonova ◽  
L. A. Dukhova ◽  
V. V. Maslennikov
Keyword(s):  
Antarctic Waters ◽  
Antarctic Expedition ◽  
Hydrochemical Studies ◽  
Russian Antarctic Expedition ◽  
The Antarctic

scholarly journals MONITORING OF THE WATER-ICE ECOSYSTEM IN THE ANTARCTIC COASTAL AREA ON MATERIALS OF THE RAE-64

2019 ◽  
Vol 47 (1) ◽  
pp. 223-224
Author(s):  
I.A. Melnikov
Keyword(s):  
Southern Ocean ◽  
Sea Ice ◽  
Coastal Area ◽  
International Polar Year ◽  
Water Ice ◽  
Antarctic Expedition ◽  
Russian Antarctic Expedition ◽  
International Polar ◽  
The Antarctic

During the seasonal work of the Russian Antarctic expedition (RAE-64) in the Nella fjord at the continental station “Progress” (Prydz Bay, Eastern Antarctica), the monitoring of the water-ice ecological system has been carried out here annually since the International polar year (2007). The purpose of monitoring is to show the role of sea ice biota in the global biosphere processes of the Southern ocean.

Terrestrial and aerophilic nonmotile green microalgae (Chlorophyta) from regions of investigation of Russian Antarctic expedition

2014 ◽  
Vol 48 ◽  
pp. 12-26
Author(s):  
V. M. Andreyeva ◽  
L. E. Kurbatova
Keyword(s):  
Species Number ◽  
Green Microalgae ◽  
The Pacific ◽  
Antarctic Expedition ◽  
Russian Antarctic Expedition ◽  
The Antarctic

The first summary of soil and nonmotile aerophilic green microalgae (Chlorophyta) from 7 regions of investigation of Russian Antarctic expedition is presented. 48 species of 33 genera were found. The areas of Bellingshausen Station (25 species) and Novolazarevskaya Station (21 species) are richest in the number and diversity of taxa. The smallest species number was observed in the Pacific sector of the Antarctic nunataks — areas of Leningradskaya Station (2 species) and Russkaya Station (4 species). Only Pseudococcomyxa simplex occurs in all the areas. Three species (Coccomyxa curvata, Muriellopsis sphaerica and Schizochlamydella minutissima) are known to 5 areas.

scholarly journals Glaciological and Geomorphological Reconnaissance in the Antarctic in 1956

1957 ◽  
Vol 3 (21) ◽  
pp. 54-61 ◽  
Author(s):  
P. A. Shumskiy
Keyword(s):  
Ice Sheet ◽  
Preliminary Account ◽  
Antarctic Expedition ◽  
Ice Regime ◽  
Academy Of Sciences ◽  
The Antarctic

Abstract This paper presents a preliminary account of the glaciological observations made by the Antarctic Expedition of the U.S.S.R. Academy of Sciences in Kaiser Wilhelm II Land, Queen Mary Land and Knox Coast in 1956. The topography of the edge of the ice sheet is described, and the ice regime is discussed, particularly in relation to the existence of ice-free areas such as “Bunger’s oasis”.

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